;; mixi.el --- API libraries for accessing to mixi -*- coding: euc-jp -*-

;; Copyright (C) 2005,2006 OHASHI Akira

;; Author: OHASHI Akira <bg66@koka-in.org>
;; Keywords: hypermedia

;; This file is *NOT* a part of Emacs.

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program; if not, you can either send email to this
;; program's maintainer or write to: The Free Software Foundation,
;; Inc.; 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

;;; Commentary:

;; APIs for getting contents:
;;
;;  * mixi-get-friends
;;  * mixi-get-favorites
;;  * mixi-get-logs
;;  * mixi-get-diaries
;;  * mixi-get-new-diaries
;;  * mixi-search-diaries
;;  * mixi-get-communities
;;  * mixi-search-communities
;;  * mixi-get-bbses
;;  * mixi-get-new-bbses
;;  * mixi-search-bbses
;;  * mixi-get-comments
;;  * mixi-get-new-comments
;;  * mixi-get-messages
;;  * mixi-get-introductions
;;  * mixi-get-news
;;
;; APIs for posting:
;;
;;  * mixi-post-diary
;;  * mixi-post-topic
;;  * mixi-post-comment
;;  * mixi-post-message
;; 
;; Utilities:
;;
;;  * mixi-remove-markup

;; Examples:
;;
;; Display newest 3 diaries like a mail format.
;;
;; (let ((range 3)
;;       (buffer (get-buffer-create "*temp*"))
;;       (format "%Y/%m/%d %H:%M"))
;;   (pop-to-buffer buffer)
;;   (let ((diaries (mixi-get-new-diaries range)))
;;     (while diaries
;;       (let* ((diary (car diaries))
;; 	     (subject (mixi-diary-title diary))
;; 	     (from (mixi-friend-nick (mixi-diary-owner diary)))
;; 	     (date (format-time-string format (mixi-diary-time diary)))
;; 	     (body (mixi-remove-markup (mixi-diary-content diary))))
;; 	(insert "From: " from "\n"
;; 		"Subject: " subject "\n"
;; 		"Date: " date "\n\n"
;; 		body "\n\n"))
;;       (setq diaries (cdr diaries))))
;;   (set-buffer-modified-p nil)
;;   (setq buffer-read-only t)
;;   (goto-char (point-min)))
;;
;; Display newest 3 diaries including newest 3 comments like a mail format.
;; Comments are displayed like a reply mail.
;;
;; (let ((range 3)
;;       (buffer (get-buffer-create "*temp*"))
;;       (format "%Y/%m/%d %H:%M"))
;;   (pop-to-buffer buffer)
;;   (let ((diaries (mixi-get-new-diaries range)))
;;     (while diaries
;;       (let* ((diary (car diaries))
;; 	     (subject (mixi-diary-title diary))
;; 	     (from (mixi-friend-nick (mixi-diary-owner diary)))
;; 	     (date (format-time-string format (mixi-diary-time diary)))
;; 	     (body (mixi-remove-markup (mixi-diary-content diary))))
;; 	(insert "From: " from "\n"
;; 		"Subject: " subject "\n"
;; 		"Date: " date "\n\n"
;; 		body "\n\n")
;; 	(let ((comments (mixi-get-comments diary range)))
;; 	  (while comments
;; 	    (let* ((comment (car comments))
;; 		   (from (mixi-friend-nick (mixi-comment-owner comment)))
;; 		   (subject (concat "Re: " subject))
;; 		   (date (format-time-string format
;; 					     (mixi-comment-time comment)))
;; 		   (body (mixi-remove-markup (mixi-comment-content comment))))
;; 	      (insert "From: " from "\n"
;; 		      "Subject: " subject "\n"
;; 		      "Date: " date "\n\n"
;; 		      body "\n\n"))
;; 	    (setq comments (cdr comments)))))
;;       (setq diaries (cdr diaries))))
;;   (set-buffer-modified-p nil)
;;   (setq buffer-read-only t)
;;   (goto-char (point-min)))

;; Bug reports:
;;
;; If you have bug reports and/or suggestions for improvement, please
;; send them via <URL:http://mixi.jp/view_community.pl?id=1596390>.

;;; Code:

(eval-when-compile (require 'cl))

;; Functions and variables which should be defined in the other module
;; at run-time.
(eval-when-compile
  (defvar w3m-use-cookies)
  (defvar url-request-method)
  (defvar url-request-data)
  (defvar url-request-extra-headers)
  (defvar url-show-status)
  (autoload 'w3m-decode-buffer "w3m")
  (autoload 'w3m-retrieve "w3m")
  (autoload 'url-retrieve-synchronously "url"))

(defgroup mixi nil
  "API library for accessing to mixi."
  :group 'hypermedia)

(defcustom mixi-url "http://mixi.jp"
  "*The URL of mixi."
  :type 'string
  :group 'mixi)

(defcustom mixi-directory (expand-file-name "~/.mixi")
  "*Where to look for mixi files."
  :type 'directory
  :group 'mixi)

(defcustom mixi-coding-system 'euc-jp
  "*Coding system for mixi."
  :type 'coding-system
  :group 'mixi)

(defcustom mixi-curl-program "curl"
  "*The program name of `curl'."
  :type 'file
  :group 'mixi)

(defcustom mixi-curl-cookie-file (expand-file-name "cookies.txt"
						   mixi-directory)
  "*The location of cookie file created by `curl'."
  :type 'file
  :group 'mixi)

(defcustom mixi-backend
  (or (condition-case nil
	  (progn
	    (require 'w3m)
	    'w3m)
	(error))
      (condition-case nil
	  (progn
	    (require 'url)
	    (if (fboundp 'url-retrieve-synchronously)
		'url))
	(error))
      (if (and (fboundp 'executable-find)
	       (executable-find mixi-curl-program))
	  'curl)
      (error "Cannot set `mixi-backend'."))
  "*The backend for accessing to mixi."
  :type '(radio (const :tag "Use emacs-w3m" w3m)
		(const :tag "Use url.el" url)
		(const :tag "Use curl" curl)
		(symbol :tag "The other backend"))
  :group 'mixi)

(defcustom mixi-login-use-ssl nil
  "*If non-ni, login using SSL."
  :type 'boolean
  :group 'mixi)

(defcustom mixi-default-email nil
  "*Default E-mail address that is used to login automatically."
  :type '(radio (string :tag "E-mail address")
		(const :tag "Asked when it is necessary" nil))
  :group 'mixi)

(defcustom mixi-default-password nil
  "*Default password that is used to login automatically."
  :type '(radio (string :tag "Password")
		(const :tag "Asked when it is necessary" nil))
  :group 'mixi)

(defcustom mixi-accept-adult-contents t
  "*If non-nil, accept to access to the adult contents."
  :type 'boolean
  :group 'mixi)

(defcustom mixi-continuously-access-interval 4.0
  "*Time interval between each mixi access.
Increase this value when unexpected error frequently occurs."
  :type 'number
  :group 'mixi)

(defcustom mixi-cache-expires nil
  "*Seconds for expiration of a cached object."
  :type '(radio (integer :tag "Expired seconds")
		(const :tag "Don't expire" nil)
		(const :tag "Don't cache" t))
  :group 'mixi)

;; FIXME: Not implemented.
(defcustom mixi-cache-use-file t
  "*If non-nil, caches are saved to files."
  :type 'boolean
  :group 'mixi)

(defvar mixi-temp-buffer-name " *mixi temp*")
(defvar mixi-me nil)

;; Utilities.
(defmacro mixi-message (&rest strings)
  `(concat "[mixi] " ,@strings))

(put 'mixi-realization-error
     'error-message (mixi-message "Cannot realize object"))
(put 'mixi-realization-error
     'error-conditions '(mixi-realization-error error))

(put 'mixi-post-error
     'error-message (mixi-message "Cannot post"))
(put 'mixi-post-error
     'error-conditions '(mixi-post-error error))

(defmacro mixi-realization-error (type object)
  `(let ((data (if debug-on-error
		   (list ,type ,object (buffer-string))
		 (list ,type ,object))))
     (signal 'mixi-realization-error data)))

(defmacro mixi-post-error (type &optional object)
  `(let ((data (when debug-on-error (list (buffer-string)))))
     (if ,object
	 (setq data (cons ,type (cons ,object data)))
       (setq data (cons ,type data)))
     (signal 'mixi-post-error data)))

(defconst mixi-message-adult-contents
  "このページから先はアダルト（成人向け）コンテンツが含まれています。<br>
閲覧に同意された方のみ、先へお進みください。")
(defconst mixi-message-continuously-accessing
  "安定してサイトの運営をおこなう為、間隔を空けない連続的なページの遷移・更<br>
新は制限させていただいております。ご迷惑をおかけいたしますが、しばらくお<br>
待ちいただいてから操作をおこなってください。")
(defconst mixi-warning-continuously-accessing
  "間隔を空けない連続的なページの遷移・更新を頻繁におこなわれていることが見<br>
受けられましたので、一時的に操作を停止させていただきます。申し訳ございま<br>
せんが、しばらくの間お待ちください。")

(defmacro mixi-retrieve (url &optional post-data)
  `(funcall (intern (concat "mixi-" (symbol-name mixi-backend) "-retrieve"))
	    ,url ,post-data))

(defmacro mixi-post-form (url fields)
  `(funcall (intern (concat "mixi-" (symbol-name mixi-backend) "-post-form"))
	    ,url ,fields))

(defun mixi-parse-buffer (url buffer &optional post-data)
  (when (string-match mixi-message-adult-contents buffer)
    (if mixi-accept-adult-contents
	(setq buffer (mixi-retrieve url "submit=agree"))
      (setq buffer (mixi-retrieve (concat url "?")))))
  (when (string-match mixi-warning-continuously-accessing buffer)
    (error (mixi-message "Access denied.  Please wait a while and increase "
			 "the value of `mixi-continuously-access-interval'.")))
  (if (not (string-match mixi-message-continuously-accessing buffer))
      buffer
    (message (mixi-message "Waiting for continuously accessing..."))
    (sleep-for mixi-continuously-access-interval)
    (mixi-retrieve url post-data)))

(defmacro mixi-expand-url (url)
  `(if (string-match "^http" ,url)
       ,url
     (concat mixi-url ,url)))

;; FIXME: Support files.
(defun mixi-make-form-data (fields)
  "Make form data and return (CONTENT-TYPE . FORM-DATA)."
  (let* ((boundary (apply 'format "--_%d_%d_%d" (current-time)))
	 (content-type (concat "multipart/form-data; boundary=" boundary))
	 (form-data
	  (mapconcat
	   (lambda (field)
	     (concat "--" boundary "\r\n"
		     "Content-Disposition: form-data; name=\""
		     (car field) "\"\r\n"
		     "\r\n"
		     (encode-coding-string (cdr field) mixi-coding-system)))
	   fields "\r\n")))
    (cons content-type (concat form-data "\r\n--" boundary "--"))))

(defun mixi-url-retrieve (url &optional post-data extra-headers)
  "Retrieve the URL and return gotten strings."
  (let* ((url-request-method (if post-data "POST" "GET"))
	 (url-request-data post-data)
	 (url-request-extra-headers extra-headers)
	 (url (mixi-expand-url url))
	 url-show-status
	 (buffer (url-retrieve-synchronously url))
	 ret)
    (unless (bufferp buffer)
      (error (mixi-message "Cannot retrieve")))
    (with-current-buffer buffer
      (goto-char (point-min))
      (while (looking-at "HTTP/[0-9]+\\.[0-9]+ [13][0-9][0-9]")
	(delete-region (point) (re-search-forward "\r?\n\r?\n")))
      (unless (looking-at "HTTP/[0-9]+\\.[0-9]+ 200")
	(error (mixi-message "Cannot retrieve")))
      (delete-region (point) (re-search-forward "\r?\n\r?\n"))
      (setq ret (decode-coding-string (buffer-string) mixi-coding-system))
      (kill-buffer buffer)
      (mixi-parse-buffer url ret post-data))))

(defun mixi-url-post-form (url fields)
  (let* ((form-data (mixi-make-form-data fields))
	 (extra-headers `(("Content-Type" . ,(car form-data)))))
    (mixi-url-retrieve url (cdr form-data) extra-headers)))

(defun mixi-w3m-retrieve (url &optional post-data)
  "Retrieve the URL and return gotten strings."
  (let ((url (mixi-expand-url url)))
    (with-temp-buffer
      (if (not (string= (w3m-retrieve url nil nil post-data) "text/html"))
	  (error (mixi-message "Cannot retrieve"))
	(w3m-decode-buffer url)
	(let ((ret (buffer-substring-no-properties (point-min) (point-max))))
	  (mixi-parse-buffer url ret post-data))))))

(defun mixi-w3m-post-form (url fields)
  (let ((form-data (mixi-make-form-data fields)))
    (mixi-w3m-retrieve url form-data)))

(defun mixi-curl-retrieve (url &optional post-data form-data)
  "Retrieve the URL and return gotten strings."
  (with-temp-buffer
    (if (fboundp 'set-buffer-multibyte)
	(set-buffer-multibyte nil))
    (let ((orig-mode (default-file-modes))
	  (coding-system-for-read 'binary)
	  (coding-system-for-write 'binary)
	  process ret)
      (unwind-protect
	  (progn
	    (set-default-file-modes 448)
	    (setq process
		  (apply #'start-process "curl" (current-buffer)
			 mixi-curl-program
			 (append (if post-data '("-d" "@-"))
				 form-data
				 (list "-i" "-L" "-s"
				       "-b" mixi-curl-cookie-file
				       "-c" mixi-curl-cookie-file
				       (mixi-expand-url url)))))
	    (set-process-sentinel process #'ignore))
	(set-default-file-modes orig-mode))
      (when post-data
	(process-send-string process (concat post-data "\n"))
	(process-send-eof process))
      (while (eq (process-status process) 'run)
	(accept-process-output process 1))
      (goto-char (point-min))
      (while (looking-at "HTTP/[0-9]+\\.[0-9]+ [13][0-9][0-9]")
	(delete-region (point) (re-search-forward "\r?\n\r?\n")))
      (unless (looking-at "HTTP/[0-9]+\\.[0-9]+ 200")
	(error (mixi-message "Cannot retrieve")))
      (delete-region (point) (re-search-forward "\r?\n\r?\n"))
      (setq ret (decode-coding-string (buffer-string) mixi-coding-system))
      (mixi-parse-buffer url ret post-data))))

(defun mixi-curl-post-form (url fields)
  (let (form-data)
    (mapcar (lambda (field)
	      (push "-F" form-data)
	      (push (concat (car field) "="
			    (encode-coding-string (cdr field)
						  mixi-coding-system))
		    form-data))
	    fields)
    (mixi-curl-retrieve url nil (reverse form-data))))

(defconst mixi-my-id-regexp
  "<a href=\"show_profile\\.pl\\?id=\\([0-9]+\\)")

(defun mixi-login (&optional email password)
  "Login to mixi."
  (when (and (eq mixi-backend 'w3m) (not w3m-use-cookies))
    (error (mixi-message "Require to accept cookies.  Please set "
			 "`w3m-use-cookies' to t.")))
  (let ((email (or email mixi-default-email
		   (read-from-minibuffer (mixi-message "Login Email: "))))
	(password (or password mixi-default-password
		      (read-passwd (mixi-message "Login Password: ")))))
    (let ((url (mixi-expand-url "/login.pl")))
      (when (and mixi-login-use-ssl (string-match "^http:" url))
	(setq url (replace-match "https:" nil nil url)))
      (let ((buffer (mixi-retrieve url
				   (concat "email=" email
					   "&password=" password
					   "&next_url=/home.pl"
					   "&sticky=on"))))
	(unless (string-match "url=/check\\.pl\\?n=" buffer)
	  (error (mixi-message "Cannot login")))
	(setq buffer (mixi-retrieve "/check.pl?n=home.pl"))
	(if (string-match mixi-my-id-regexp buffer)
	    (setq mixi-me (mixi-make-friend (match-string 1 buffer)))
	  (error (mixi-message "Cannot login")))))))

(defun mixi-logout ()
  (mixi-retrieve "/logout.pl"))

(defconst mixi-login-form "<form action=\"/login.pl\" method=\"post\">")

(defmacro with-mixi-retrieve (url &rest body)
  `(with-current-buffer (get-buffer-create mixi-temp-buffer-name)
     (when ,url
       (erase-buffer)
       (insert (mixi-retrieve ,url))
       (goto-char (point-min))
       (when (search-forward mixi-login-form nil t)
	 (mixi-login)
	 (erase-buffer)
	 (insert (mixi-retrieve ,url))))
     (goto-char (point-min))
     ,@body))
(put 'with-mixi-retrieve 'lisp-indent-function 'defun)
(put 'with-mixi-retrieve 'edebug-form-spec '(body))

(defmacro with-mixi-post-form (url fields &rest body)
  `(with-current-buffer (get-buffer-create mixi-temp-buffer-name)
     (when ,url
       (erase-buffer)
       (insert (mixi-post-form ,url ,fields))
       (goto-char (point-min))
       (when (search-forward mixi-login-form nil t)
	 (mixi-login)
	 (erase-buffer)
	 (insert (mixi-post-form ,url ,fields))))
     (goto-char (point-min))
     ,@body))
(put 'with-mixi-post-form 'lisp-indent-function 'defun)
(put 'with-mixi-post-form 'edebug-form-spec '(body))

(defun mixi-get-matched-items (url regexp &optional range reverse)
  "Get matched items to REGEXP in URL."
  (let ((page 1)
	ids)
    (catch 'end
      (while (or (null range) (< (length ids) range))
	(with-mixi-retrieve (when url (format url page))
	  (let ((func (if reverse (progn
				    (goto-char (point-max))
				    're-search-backward)
			're-search-forward))
		found)
	    (while (and (funcall func regexp nil t)
			(or (null range) (< (length ids) range)))
	      (let ((num 1)
		    list)
		(while (match-string num)
		  (setq list (cons (match-string num) list))
		  (incf num))
		(when (not (member (reverse list) ids))
		  (setq found t)
		  (setq ids (cons (reverse list) ids)))))
	    (when (not found)
	      (throw 'end ids))))
	(incf page)))
    (reverse ids)))

;; stolen (and modified) from shimbun.el
(defun mixi-remove-markup (string)
  "Remove markups from STRING."
  (with-temp-buffer
    (insert (or string ""))
    (save-excursion
      (goto-char (point-min))
      (while (search-forward "<!--" nil t)
	(delete-region (match-beginning 0)
		       (or (search-forward "-->" nil t)
			   (point-max))))
      (goto-char (point-min))
      (while (re-search-forward "<[^>]+>" nil t)
	(replace-match "" t t))
      (goto-char (point-min))
      (while (re-search-forward "
" nil t)
	(replace-match "\n" t t)))
    ;; FIXME: Decode entities.
    (buffer-string)))

;; stolen (and modified) from w3m.el
(defconst mixi-entity-alist '(("gt" . ">")
			      ("lt" . "<")
			      ("amp" . "&"))
  "Alist of html character entities and values.")

;; stolen (and modified) from w3m.el
(defun mixi-encode-specials-string (str)
  "Encode special characters in the string STR."
  (let ((pos 0)
	(buf))
    (while (string-match "[<>&]" str pos)
      (setq buf
	    (cons ";"
		  (cons (car (rassoc (match-string 0 str) mixi-entity-alist))
			(cons "&"
			      (cons (substring str pos (match-beginning 0))
				    buf))))
	    pos (match-end 0)))
    (if buf
	(apply 'concat (nreverse (cons (substring str pos) buf)))
      str)))

;; stolen (and modified) from w3m.el
(defun mixi-url-encode-string (string)
  (apply (function concat)
	 (mapcar
	  (lambda (char)
	    (cond
	     ((eq char ?\n)		; newline
	      "%0D%0A")
	     ((string-match "[-a-zA-Z0-9_:/.]" (char-to-string char)) ; xxx?
	      (char-to-string char))	; printable
	     ((char-equal char ?\x20)	; space
	      "+")
	     (t
	      (format "%%%02x" char))))	; escape
	  ;; Coerce a string into a list of chars.
	  (append (encode-coding-string (or string "") mixi-coding-system)
		  nil))))

(defun mixi-url-encode-and-quote-percent-string (string)
  (let ((string (mixi-url-encode-string string))
	(pos 0))
    (while (string-match "%" string pos)
      (setq string (replace-match "%%" nil nil string))
      (setq pos (+ (match-end 0) 1)))
    string))

;; Object.
(defconst mixi-object-prefix "mixi-")

(defmacro mixi-object-class (object)
  `(car-safe ,object))

(defmacro mixi-object-p (object)
  `(let ((class (mixi-object-class ,object)))
     (when (symbolp class)
       (eq (string-match (concat "^" mixi-object-prefix)
			 (symbol-name class)) 0))))

(defun mixi-object-name (object)
  "Return the name of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (let ((class (mixi-object-class object)))
    (substring (symbol-name class) (length mixi-object-prefix))))

(defun mixi-read-object (exp)
  "Read one Lisp expression as mixi object."
  (if (mixi-object-p exp)
      (let ((func (intern (concat mixi-object-prefix "make-"
				  (mixi-object-name exp))))
	    (args (mapcar (lambda (arg)
			    (mixi-read-object arg))
			  (cdr exp))))
	(let ((object (apply func (cdr args))))
	  (when (car args)
	    (mixi-object-set-timestamp object (car args)))
	  object))
    exp))

(defun mixi-object-timestamp (object)
  "Return the timestamp of OJBECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (aref (cdr object) 0))
(defalias 'mixi-object-realized-p 'mixi-object-timestamp)

(defun mixi-object-owner (object)
  "Return the owner of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name object) "-owner"))))
    (funcall func object)))

(defun mixi-object-id (object)
  "Return the id of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name object) "-id"))))
    (funcall func object)))

(defun mixi-object-time (object)
  "Return the time of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name object) "-time"))))
    (funcall func object)))

(defun mixi-object-title (object)
  "Return the title of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name object) "-title"))))
    (funcall func object)))

(defun mixi-object-content (object)
  "Return the content of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name object) "-content"))))
    (funcall func object)))

(defun mixi-object-set-timestamp (object timestamp)
  "Set the timestamp of OBJECT."
  (unless (mixi-object-p object)
    (signal 'wrong-type-argument (list 'mixi-object-p object)))
  (aset (cdr object) 0 timestamp))

(defmacro mixi-object-touch (object)
  `(mixi-object-set-timestamp ,object (current-time)))

(defconst mixi-object-url-regexp
  "/\\(show\\|view\\)_\\([a-z]+\\)\\.pl")

(defun mixi-make-object-from-url (url)
  "Return a mixi object from URL."
  (if (string-match mixi-object-url-regexp url)
      (let ((name (match-string 2 url)))
	(cond ((string= name "bbs")
	       (setq name "topic"))
	      ((string= name "profile")
	       (setq name "friend")))
	(let ((func (intern (concat mixi-object-prefix "make-" name
				    "-from-url"))))
	  (funcall func url)))
    (when (string-match "/home\\.pl" url)
      (mixi-make-friend-from-url url))))

;; Cache.
;; stolen from time-date.el
(defun mixi-time-less-p (t1 t2)
  "Say whether time value T1 is less than time value T2."
  (unless (numberp (cdr t1))
    (setq t1 (cons (car t1) (car (cdr t1)))))
  (unless (numberp (cdr t2))
    (setq t2 (cons (car t2) (car (cdr t2)))))
  (or (< (car t1) (car t2))
      (and (= (car t1) (car t2))
	   (< (cdr t1) (cdr t2)))))

(defun mixi-time-add (t1 t2)
  "Add two time values.  One should represent a time difference."
  (unless (numberp (cdr t1))
    (setq t1 (cons (car t1) (car (cdr t1)))))
  (unless (numberp (cdr t2))
    (setq t2 (cons (car t2) (car (cdr t2)))))
  (let ((low (+ (cdr t1) (cdr t2))))
    (cons (+ (car t1) (car t2) (lsh low -16)) low)))

;; stolen from time-date.el
(defun mixi-seconds-to-time (seconds)
  "Convert SECONDS (a floating point number) to a time value."
  (cons (floor seconds 65536)
	(floor (mod seconds 65536))))

(defun mixi-cache-expired-p (object)
  "Whether a cache of OBJECT is expired."
  (let ((timestamp (mixi-object-timestamp object)))
    (unless (or (null mixi-cache-expires)
		 (null timestamp))
      (if (numberp mixi-cache-expires)
	  (mixi-time-less-p
	   (mixi-time-add timestamp (mixi-seconds-to-time mixi-cache-expires))
	   (current-time))
	t))))

(defun mixi-make-cache (key value table)
  "Make a cache object and return it."
  (let ((cache (gethash key table)))
    (if (and cache (not (mixi-cache-expired-p cache)))
	cache
      (puthash key value table))))

(defconst mixi-cache-file-regexp "[a-z]+-cache$")
(defconst mixi-cache-regexp (concat mixi-object-prefix
				    mixi-cache-file-regexp))

(defun mixi-save-cache ()
  (let ((cache-directory (expand-file-name "cache" mixi-directory)))
    (unless (file-directory-p cache-directory)
      (make-directory cache-directory t))
    (let ((caches (apropos-internal mixi-cache-regexp 'boundp)))
      (while caches
	(with-temp-file (expand-file-name
			 (substring (symbol-name (car caches))
				    (length mixi-object-prefix))
			 cache-directory)
	  (let ((coding-system-for-write mixi-coding-system)
		(cache (symbol-value (car caches))))
	    (insert "#s(hash-table size "
		    (number-to-string (hash-table-count cache))
		    " test equal data (\n")
	    (maphash
	     (lambda (key value)
	       (let (print-level print-length)
		 (insert (prin1-to-string key) " "
			 (prin1-to-string value) "\n")))
	     cache))
	  (insert "))"))
	(setq caches (cdr caches))))))

;; stolen (and modified) from lsdb.el
(defun mixi-read-cache (&optional marker)
  "Read one Lisp expression as text from MARKER, return as Lisp object."
  (save-excursion
    (goto-char marker)
    (if (looking-at "^#s(")
	(let ((end-marker
	       (progn
		 (forward-char 2);skip "#s"
		 (forward-sexp);move to the left paren
		 (point-marker))))
	  (with-temp-buffer
	    (buffer-disable-undo)
	    (insert-buffer-substring (marker-buffer marker)
				     marker end-marker)
	    (goto-char (point-min))
	    (delete-char 2)
	    (let ((object (read (current-buffer)))
		  data)
	      (if (eq 'hash-table (car object))
		  (progn
		    (setq data (plist-get (cdr object) 'data))
		    (while data
		      (pop data);throw it away
		      (mixi-read-object (pop data))))
		object))))
      (read marker))))

(defun mixi-load-cache ()
  (let ((cache-directory (expand-file-name "cache" mixi-directory)))
    (when (file-directory-p cache-directory)
      ;; FIXME: Load friend and community first.
      (let ((files (directory-files cache-directory t
				    mixi-cache-file-regexp)))
	(while files
	  (let ((buffer (find-file-noselect (car files))))
	    (unwind-protect
		(save-excursion
		  (set-buffer buffer)
		  (goto-char (point-min))
		  (re-search-forward "^#s(")
		  (goto-char (match-beginning 0))
		  (mixi-read-cache (point-marker)))
	      (kill-buffer buffer)))
	  (setq files (cdr files)))))))

;; Friend object.
(defvar mixi-friend-cache (make-hash-table :test 'equal))
(defun mixi-make-friend (id &optional nick name sex address age birthday
			    blood-type birthplace hobby job organization
			    profile)
  "Return a friend object."
  (mixi-make-cache id (cons 'mixi-friend (vector nil id nick name sex address
						 age birthday blood-type
						 birthplace hobby job
						 organization profile))
		   mixi-friend-cache))

(defun mixi-make-me ()
  "Return a my object."
  (unless mixi-me
    (with-mixi-retrieve "/home.pl"
      (if (re-search-forward mixi-my-id-regexp nil t)
	  (setq mixi-me (mixi-make-friend (match-string 1)))
	(signal 'error (list 'who-am-i)))))
  mixi-me)

(defconst mixi-friend-url-regexp
  "/show_\\(friend\\|profile\\)\\.pl\\?id=\\([0-9]+\\)")

(defun mixi-make-friend-from-url (url)
  "Return a friend object from URL."
  (if (string-match mixi-friend-url-regexp url)
      (let ((id (match-string 2 url)))
	(mixi-make-friend id))
    (when (string-match "/home\\.pl" url)
      (mixi-make-me))))

(defmacro mixi-friend-p (friend)
  `(eq (mixi-object-class ,friend) 'mixi-friend))

(defmacro mixi-friend-page (friend)
  `(concat "/show_profile.pl?id=" (mixi-friend-id ,friend)))

(defconst mixi-friend-nick-regexp
  "<img \\(alt=\"\\*\" \\)?src=\"?http://img\\.mixi\\.jp/img/dot0\\.gif\"? width=\"?1\"? height=\"?5\"?\\( /\\)?><br\\( /\\)?>
?
\\(.*\\)さん([0-9]+)")
(defconst mixi-friend-name-regexp
  "名\\(&nbsp;\\| \\)前</font></td>

?<td width=\"?345\"?>\\(.+?\\)\\(</td>\\| <img\\)")
(defconst mixi-friend-sex-regexp
  "性\\(&nbsp;\\| \\)別</font></td>

?<td width=\"?345\"?>\\([男女]\\)性\\(</td>\\| <img\\)")
(defconst mixi-friend-address-regexp
  "現住所</font></td>
<td>\\(.+?\\)\\(</td>\\| <img\\)")
(defconst mixi-friend-age-regexp
  "年\\(&nbsp;\\| \\)齢</font></td>\n<td>\\([0-9]+\\)歳\\(</td>\\| <img\\)")
(defconst mixi-friend-birthday-regexp
  "誕生日</font></td>\n<td>\\([0-9]+\\)月\\([0-9]+\\)日\\(</td>\\| <img\\)")
(defconst mixi-friend-blood-type-regexp
  "血液型</font></td>\n<td>\\([ABO]B?\\)型\\(</td>\\| <img\\)")
(defconst mixi-friend-birthplace-regexp
  "出身地</font>\n?</td>\n<td>\\(.+?\\)\\(</td>\\| <img\\)")
(defconst mixi-friend-hobby-regexp
  "趣\\(&nbsp;\\| \\)味</font></td>\n<td>\\(.+?\\)\\(</td>\\| <img\\)")
(defconst mixi-friend-job-regexp
  "職\\(&nbsp;\\| \\)業</font></td>\n<td>\\(.+?\\)\\(</td>\\| <img\\)")
(defconst mixi-friend-organization-regexp
  "所\\(&nbsp;\\| \\)属</font></td>\n<td[^>]*>\\(.+?\\)\\(</td>\\| <img\\)")
(defconst mixi-friend-profile-regexp
  "自己紹介</font></td>
<td class=\"?h120\"?>\\(.+\\)</td></tr>")

(defun mixi-realize-friend (friend)
  "Realize a FRIEND."
  ;; FIXME: Check a expiration of cache?
  (unless (mixi-object-realized-p friend)
    (with-mixi-retrieve (mixi-friend-page friend)
      (let ((case-fold-search t))
	(if (re-search-forward mixi-friend-nick-regexp nil t)
	    (mixi-friend-set-nick friend (match-string 4))
	  (mixi-realization-error 'cannot-find-nick friend))
	(when (re-search-forward mixi-friend-name-regexp nil t)
	  (mixi-friend-set-name friend (match-string 2)))
	(when (re-search-forward mixi-friend-sex-regexp nil t)
	  (mixi-friend-set-sex friend (if (string= (match-string 2) "男")
					  'male 'female)))
	(when (re-search-forward mixi-friend-address-regexp nil t)
	  (mixi-friend-set-address friend (match-string 1)))
	(when (re-search-forward mixi-friend-age-regexp nil t)
	  (mixi-friend-set-age friend (string-to-number (match-string 2))))
	(when (re-search-forward mixi-friend-birthday-regexp nil t)
	  (mixi-friend-set-birthday
	   friend (list (string-to-number (match-string 1))
			(string-to-number (match-string 2)))))
	(when (re-search-forward mixi-friend-blood-type-regexp nil t)
	  (mixi-friend-set-blood-type friend (intern (match-string 1))))
	(when (re-search-forward mixi-friend-birthplace-regexp nil t)
	  (mixi-friend-set-birthplace friend (match-string 1)))
	(when (re-search-forward mixi-friend-hobby-regexp nil t)
	  (mixi-friend-set-hobby friend (split-string (match-string 2) ", ")))
	(when (re-search-forward mixi-friend-job-regexp nil t)
	  (mixi-friend-set-job friend (match-string 2)))
	(when (re-search-forward mixi-friend-organization-regexp nil t)
	  (mixi-friend-set-organization friend (match-string 2)))
	(when (re-search-forward mixi-friend-profile-regexp nil t)
	  (mixi-friend-set-profile friend (match-string 1)))))
    (mixi-object-touch friend)))

(defun mixi-friend-id (friend)
  "Return the id of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aref (cdr friend) 1))

(defun mixi-friend-nick (friend)
  "Return the nick of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (unless (aref (cdr friend) 2)
    (mixi-realize-friend friend))
  (aref (cdr friend) 2))

(defun mixi-friend-name (friend)
  "Return the name of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 3))

(defun mixi-friend-sex (friend)
  "Return the sex of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 4))

(defun mixi-friend-address (friend)
  "Return the address of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 5))

(defun mixi-friend-age (friend)
  "Return the age of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 6))

(defun mixi-friend-birthday (friend)
  "Return the birthday of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 7))

(defun mixi-friend-blood-type (friend)
  "Return the blood type of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 8))

(defun mixi-friend-birthplace (friend)
  "Return the birthplace of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 9))

(defun mixi-friend-hobby (friend)
  "Return the hobby of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 10))

(defun mixi-friend-job (friend)
  "Return the job of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 11))

(defun mixi-friend-organization (friend)
  "Return the organization of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 12))

(defun mixi-friend-profile (friend)
  "Return the profile of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (mixi-realize-friend friend)
  (aref (cdr friend) 13))

(defun mixi-friend-set-nick (friend nick)
  "Set the nick of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 2 nick))

(defun mixi-friend-set-name (friend name)
  "Set the name of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 3 name))

(defun mixi-friend-set-sex (friend sex)
  "Set the sex of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 4 sex))

(defun mixi-friend-set-address (friend address)
  "Set the address of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 5 address))

(defun mixi-friend-set-age (friend age)
  "Set the age of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 6 age))

(defun mixi-friend-set-birthday (friend birthday)
  "Set the birthday of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 7 birthday))

(defun mixi-friend-set-blood-type (friend blood-type)
  "Set the blood type of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 8 blood-type))

(defun mixi-friend-set-birthplace (friend birthplace)
  "Set the birthplace of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 9 birthplace))

(defun mixi-friend-set-hobby (friend hobby)
  "Set the hobby of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 10 hobby))

(defun mixi-friend-set-job (friend job)
  "Set the job of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 11 job))

(defun mixi-friend-set-organization (friend organization)
  "Set the organization of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 12 organization))

(defun mixi-friend-set-profile (friend profile)
  "Set the profile of FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (aset (cdr friend) 13 profile))

(defmacro mixi-friend-list-page (&optional friend)
  `(concat "/list_friend.pl?page=%d"
	   (when ,friend (concat "&id=" (mixi-friend-id ,friend)))))

(defconst mixi-friend-list-id-regexp
  "<a href=\"?show_friend\\.pl\\?id=\\([0-9]+\\)\"?")
(defconst mixi-friend-list-nick-regexp
  "<td valign=\"?top\"?>\\(.+\\)さん([0-9]+)")

;;;###autoload
(defun mixi-get-friends (&rest friend-or-range)
  "Get friends of FRIEND."
  (when (> (length friend-or-range) 2)
    (signal 'wrong-number-of-arguments (list 'mixi-get-friends
					     (length friend-or-range))))
  (let ((friend (nth 0 friend-or-range))
	(range (nth 1 friend-or-range)))
    (when (or (not (mixi-friend-p friend)) (mixi-friend-p range))
      (setq friend (nth 1 friend-or-range))
      (setq range (nth 0 friend-or-range)))
    (unless (or (null friend) (mixi-friend-p friend))
      (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
    (let ((ids (mixi-get-matched-items (mixi-friend-list-page friend)
				       mixi-friend-list-id-regexp
				       range))
	  (nicks (mixi-get-matched-items (mixi-friend-list-page friend)
					 mixi-friend-list-nick-regexp
					 range)))
      (let ((index 0)
	    ret)
	(while (< index (length ids))
	  (setq ret (cons (mixi-make-friend (nth 0 (nth index ids))
					    (nth 0 (nth index nicks))) ret))
	  (incf index))
	(reverse ret)))))

;; Favorite.
(defmacro mixi-favorite-list-page ()
  `(concat "/list_bookmark.pl?page=%d"))

(defconst mixi-favorite-list-regexp
  "<td bgcolor=\"#FDF9F2\"><font color=\"#996600\">名前</font></td>
<td colspan=\"2\" bgcolor=\"#FFFFFF\"><a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*\\)</a></td>")

;;;###autoload
(defun mixi-get-favorites (&optional range)
  "Get favorites."
  (let ((items (mixi-get-matched-items (mixi-favorite-list-page)
				       mixi-favorite-list-regexp
				       range)))
    (mapcar (lambda (item)
	      (mixi-make-friend (nth 0 item) (nth 1 item)))
	    items)))

;; Log object.
(defun mixi-make-log (friend time)
  "Return a log object."
  (cons 'mixi-log (vector friend time)))

(defmacro mixi-log-p (log)
  `(eq (mixi-object-class ,log) 'mixi-log))

(defun mixi-log-friend (log)
  "Return the friend of LOG."
  (unless (mixi-log-p log)
    (signal 'wrong-type-argument (list 'mixi-log-p log)))
  (aref (cdr log) 0))

(defun mixi-log-time (log)
  "Return the time of LOG."
  (unless (mixi-log-p log)
    (signal 'wrong-type-argument (list 'mixi-log-p log)))
  (aref (cdr log) 1))

(defmacro mixi-log-list-page ()
  `(concat "/show_log.pl"))

(defconst mixi-log-list-regexp
  "\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日 \\([0-9]+\\):\\([0-9]+\\) <a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*?\\)</a>")

;;;###autoload
(defun mixi-get-logs (&optional range)
  "Get logs."
  (let ((items (mixi-get-matched-items (mixi-log-list-page)
				       mixi-log-list-regexp
				       range)))
    (mapcar (lambda (item)
	      (mixi-make-log (mixi-make-friend (nth 5 item) (nth 6 item))
			     (encode-time 0
					  (string-to-number (nth 4 item))
					  (string-to-number (nth 3 item))
					  (string-to-number (nth 2 item))
					  (string-to-number (nth 1 item))
					  (string-to-number (nth 0 item)))))
	    items)))

;; Diary object.
(defvar mixi-diary-cache (make-hash-table :test 'equal))
(defun mixi-make-diary (owner id &optional comment-count time title content)
  "Return a diary object."
  (let ((owner (or owner (mixi-make-me))))
    (mixi-make-cache (list (mixi-friend-id owner) id)
		     (cons 'mixi-diary (vector nil owner id comment-count time
					       title content))
		     mixi-diary-cache)))

(defconst mixi-diary-url-regexp
  "/view_diary\\.pl\\?id=\\([0-9]+\\)&owner_id=\\([0-9]+\\)\\(&comment_count=\\([0-9]+\\)\\)?")

(defun mixi-make-diary-from-url (url)
  "Return a diary object from URL."
  (when (string-match mixi-diary-url-regexp url)
    (let ((id (match-string 1 url))
	  (owner-id (match-string 2 url))
	  (comment-count (match-string 4 url)))
      (mixi-make-diary (mixi-make-friend owner-id) id comment-count))))

(defmacro mixi-diary-p (diary)
  `(eq (mixi-object-class ,diary) 'mixi-diary))

(defmacro mixi-diary-page (diary)
  `(concat "/view_diary.pl?id=" (mixi-diary-id ,diary)
	   "&owner_id=" (mixi-friend-id (mixi-diary-owner ,diary))))

(defconst mixi-diary-closed-regexp
  "<td>友人\\(の友人\\)?まで公開のため読むことが出来ません。</td>")
(defconst mixi-diary-owner-nick-regexp
  "<td width=\"?490\"? background=\"?http://img\\.mixi\\.jp/img/bg_w\\.gif\"?><b><font color=\"?#605048\"?>\\(.+?\\)\\(さん\\)?の日記</font></b></td>")
(defconst mixi-diary-time-regexp
  "<td align=\"?center\"? rowspan=\"?[23]\"? nowrap\\(=\"?nowrap\"?\\)? width=\"?95\"? bgcolor=\"?#FFD8B0\"?>\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日<br\\( /\\)?>\\([0-9]+\\):\\([0-9]+\\)</td>")
(defconst mixi-diary-title-regexp
  "<td bgcolor=\"?#FFF4E0\"? width=\"?430\"?>&nbsp;\\([^<]+\\)</td>")
(defconst mixi-diary-content-regexp
  "<td class=\"?h12\"? width=\"?410\"?>\\(\\(.\\|\r?\n\\)*?\\)</td>")

(defun mixi-realize-diary (diary &optional page)
  "Realize a DIARY."
  ;; FIXME: Check a expiration of cache?
  (unless (mixi-object-realized-p diary)
    (with-mixi-retrieve (or page (mixi-diary-page diary))
      (let ((case-fold-search t))
	(unless (re-search-forward mixi-diary-closed-regexp nil t)
	  (if (re-search-forward mixi-diary-owner-nick-regexp nil t)
	      (mixi-friend-set-nick (mixi-diary-owner diary)
				    (match-string 1))
	    (mixi-realization-error 'cannot-find-owner-nick diary))
	  (if (re-search-forward mixi-diary-time-regexp nil t)
	      (mixi-diary-set-time
	       diary (encode-time 0 (string-to-number (match-string 7))
				  (string-to-number (match-string 6))
				  (string-to-number (match-string 4))
				  (string-to-number (match-string 3))
				  (string-to-number (match-string 2))))
	    (mixi-realization-error 'cannot-find-time diary))
	  (if (re-search-forward mixi-diary-title-regexp nil t)
	      (mixi-diary-set-title diary (match-string 1))
	    (mixi-realization-error 'cannot-find-title diary))
	  (if (re-search-forward mixi-diary-content-regexp nil t)
	      (mixi-diary-set-content diary (match-string 1))
	    (mixi-realization-error 'cannot-find-content diary)))))
    (mixi-object-touch diary)))

(defun mixi-diary-owner (diary)
  "Return the owner of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aref (cdr diary) 1))

(defun mixi-diary-id (diary)
  "Return the id of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aref (cdr diary) 2))

(defun mixi-diary-comment-count (diary)
  "Return the comment-count of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aref (cdr diary) 3))

(defun mixi-diary-time (diary)
  "Return the time of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (unless (aref (cdr diary) 3)
    (mixi-realize-diary diary))
  (aref (cdr diary) 4))

(defun mixi-diary-title (diary)
  "Return the title of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (unless (aref (cdr diary) 4)
    (mixi-realize-diary diary))
  (aref (cdr diary) 5))

(defun mixi-diary-content (diary)
  "Return the content of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (mixi-realize-diary diary)
  (aref (cdr diary) 6))

(defun mixi-diary-set-comment-count (diary comment-count)
  "Set the comment-count of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aset (cdr diary) 3 comment-count))

(defun mixi-diary-set-time (diary time)
  "Set the time of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aset (cdr diary) 4 time))

(defun mixi-diary-set-title (diary title)
  "Set the title of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aset (cdr diary) 5 title))

(defun mixi-diary-set-content (diary content)
  "Set the content of DIARY."
  (unless (mixi-diary-p diary)
    (signal 'wrong-type-argument (list 'mixi-diary-p diary)))
  (aset (cdr diary) 6 content))

(defmacro mixi-diary-list-page (&optional friend)
  `(concat "/list_diary.pl?page=%d"
	   (when ,friend (concat "&id=" (mixi-friend-id ,friend)))))

(defconst mixi-diary-list-regexp
  "<tr VALIGN=top>
<td ALIGN=center ROWSPAN=3 NOWRAP bgcolor=#F2DDB7><font COLOR=#996600>\\([0-9]+\\)年<br />\\([0-9]+\\)月\\([0-9]+\\)日<br>\\([0-9]+\\):\\([0-9]+\\)</font>\\(<br><input type=\"checkbox\" name=\"diary_id\" value=\"[0-9]+\">\\|\\)</td>
<td bgcolor=\"#FFF4E0\">&nbsp;<a href=\"view_diary\\.pl\\?id=\\([0-9]+\\)&owner_id=[0-9]+\">\\(.*\\)</a></td>")

;;;###autoload
(defun mixi-get-diaries (&rest friend-or-range)
  "Get diaries of FRIEND."
  (when (> (length friend-or-range) 2)
    (signal 'wrong-number-of-arguments
	    (list 'mixi-get-diaries (length friend-or-range))))
  (let ((friend (nth 0 friend-or-range))
	(range (nth 1 friend-or-range)))
    (when (or (not (mixi-friend-p friend)) (mixi-friend-p range))
      (setq friend (nth 1 friend-or-range))
      (setq range (nth 0 friend-or-range)))
    (unless (or (null friend) (mixi-friend-p friend))
      (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
    (let ((items (mixi-get-matched-items (mixi-diary-list-page friend)
					 mixi-diary-list-regexp
					 range)))
      (mapcar (lambda (item)
		(mixi-make-diary friend (nth 6 item) nil
				 (encode-time
				  0 (string-to-number (nth 4 item))
				  (string-to-number (nth 3 item))
				  (string-to-number (nth 2 item))
				  (string-to-number (nth 1 item))
				  (string-to-number (nth 0 item)))
				  (nth 7 item)))
	      items))))

(defmacro mixi-new-diary-list-page ()
  `(concat "/new_friend_diary.pl?page=%d"))

(defconst mixi-new-diary-list-regexp
  "<td WIDTH=180><img src=http://img\\.mixi\\.jp/img/pen\\.gif ALIGN=left WIDTH=14 HEIGHT=16>\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日 \\([0-9]+\\):\\([0-9]+\\)</td>
<td WIDTH=450><a class=\"new_link\" href=view_diary\\.pl\\?id=\\([0-9]+\\)&owner_id=\\([0-9]+\\)>\\(.+\\)</a> (\\(.*\\)) ")

;;;###autoload
(defun mixi-get-new-diaries (&optional range)
  "Get new diaries."
  (let ((items (mixi-get-matched-items (mixi-new-diary-list-page)
				       mixi-new-diary-list-regexp
				       range)))
    (mapcar (lambda (item)
	      (mixi-make-diary (mixi-make-friend (nth 6 item) (nth 8 item))
			       (nth 5 item)
			       nil
			       (encode-time
				0 (string-to-number (nth 4 item))
				(string-to-number (nth 3 item))
				(string-to-number (nth 2 item))
				(string-to-number (nth 1 item))
				(string-to-number (nth 0 item)))
			       (nth 7 item)))
	    items)))

(defmacro mixi-search-diary-list-page (keyword)
  `(concat "/search_diary.pl?page=%d&submit=search&keyword="
	     (mixi-url-encode-and-quote-percent-string ,keyword)))

(defconst mixi-search-diary-list-regexp
  "<td BGCOLOR=#FDF9F2><font COLOR=#996600>名&nbsp;&nbsp;前</font></td>
<td COLSPAN=2 BGCOLOR=#FFFFFF>\\(.*\\)

</td></tr>

<tr>
<td BGCOLOR=#FDF9F2><font COLOR=#996600>タイトル</font></td>
<td COLSPAN=2 BGCOLOR=#FFFFFF>\\(.+\\)</td></tr>

<tr>
<td BGCOLOR=#FDF9F2><font COLOR=#996600>本&nbsp;&nbsp;文</font></td>
<td COLSPAN=2 BGCOLOR=#FFFFFF width=\"380\">\\(.*\\)</td></tr>


<tr>
<td NOWRAP BGCOLOR=#FDF9F2 WIDTH=80><font COLOR=#996600>作成日時</font></td>
<td BGCOLOR=#FFFFFF WIDTH=220>\\([0-9]+\\)月\\([0-9]+\\)日 \\([0-9]+\\):\\([0-9]+\\)</td>
<td ALIGN=center BGCOLOR=#FDF9F2 width=250><a href=\"view_diary\\.pl\\?id=\\([0-9]+\\)&owner_id=\\([0-9]+\\)\"><img src=http://img\\.mixi\\.jp/img/shbtn\\.gif ALT=詳細を見る BORDER=0 WIDTH=104 HEIGHT=19></a></td></tr>
</table>
</td></tr></table>")

;;;###autoload
(defun mixi-search-diaries (keyword &optional range)
  (let ((items (mixi-get-matched-items (mixi-search-diary-list-page keyword)
				       mixi-search-diary-list-regexp
				       range))
	(year (nth 5 (decode-time (current-time))))
	(month (nth 4 (decode-time (current-time)))))
    (mapcar (lambda (item)
		(let ((month-of-item (string-to-number (nth 3 item))))
		  (when (> month-of-item month)
		    (decf year))
		  (setq month month-of-item)
		  (mixi-make-diary (mixi-make-friend (nth 8 item) (nth 0 item))
				   (nth 7 item)
				   nil
				   (encode-time
				    0 (string-to-number (nth 6 item))
				    (string-to-number (nth 5 item))
				    (string-to-number (nth 4 item))
				    month year)
				   (nth 1 item)
				   (nth 2 item))))
	    items)))

(defmacro mixi-post-diary-page ()
  `(concat "/add_diary.pl"))

(defconst mixi-post-key-regexp
  "<input type=\"?hidden\"? name=\"?post_key\"? +value=\"\\([a-z0-9]+\\)\"")
(defconst mixi-post-succeed-regexp
  "<b>\\(作成\\|書き込み\\)が完了しました。反映に時間がかかることがありますので、表示されていない場合は少々お待ちください。</b>")

;; FIXME: Support photos.
;;;###autoload
(defun mixi-post-diary (title content)
  "Post a diary."
  (unless (stringp title)
    (signal 'wrong-type-argument (list 'stringp title)))
  (unless (stringp content)
    (signal 'wrong-type-argument (list 'stringp content)))
  (let ((fields `(("id" . ,(mixi-friend-id (mixi-make-me)))
		  ("diary_title" . ,title)
		  ("diary_body" . ,content)
		  ("submit" . "main")))
	post-key)
    (with-mixi-post-form (mixi-post-diary-page) fields
      (if (re-search-forward mixi-post-key-regexp nil t)
	  (setq post-key (match-string 1))
	(mixi-post-error 'cannot-find-key)))
    (setq fields `(("post_key" . ,post-key)
		   ("id" . ,(mixi-friend-id (mixi-make-me)))
		   ("diary_title" . ,title)
		   ("diary_body" . ,content)
		   ("submit" . "confirm")))
    (with-mixi-post-form (mixi-post-diary-page) fields
      (unless (re-search-forward mixi-post-succeed-regexp nil t)
	(mixi-post-error 'cannot-find-succeed)))))

;; Community object.
(defvar mixi-community-cache (make-hash-table :test 'equal))
(defun mixi-make-community (id &optional name birthday owner category members
			       open-level authority description)
  "Return a community object."
  (mixi-make-cache id (cons 'mixi-community (vector nil id name birthday owner
						    category members
						    open-level authority
						    description))
		   mixi-community-cache))

(defconst mixi-community-url-regexp
  "/view_community\\.pl\\?id=\\([0-9]+\\)")

(defun mixi-make-community-from-url (url)
  "Return a community object from URL."
  (when (string-match mixi-community-url-regexp url)
    (let ((id (match-string 1 url)))
      (mixi-make-community id))))

(defmacro mixi-community-p (community)
  `(eq (mixi-object-class ,community) 'mixi-community))

(defmacro mixi-community-page (community)
  `(concat "/view_community.pl?id=" (mixi-community-id ,community)))

;; FIXME: Not community specific.
(defconst mixi-community-nodata-regexp
  "^データがありません")
(defconst mixi-community-name-regexp
  "<td width=\"?345\"?>\\(.*\\)</td></tr>")
(defconst mixi-community-birthday-regexp
  "<td bgcolor=\"?#F2DDB7\"? width=\"?80\"?><font color=\"?#996600\"?>開設日</font></td>
<td width=\"?345\"?>\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日")
;; FIXME: Care when the owner has seceded.
(defconst mixi-community-owner-regexp
  "<td bgcolor=\"?#F2DDB7\"? width=\"?80\"?><font color=\"?#996600\"?>管理人</font></td>
<td width=\"?345\"?>
<table style=\"width: 100%;\"><tr><td>
<a href=\"\\(home\\.pl\\|show_friend\\.pl\\?id=\\([0-9]+\\)\\)\">\\(.*\\)</a>")
(defconst mixi-community-category-regexp
  "<td bgcolor=\"?#F2DDB7\"? width=\"?80\"?><font color=\"?#996600\"?>カテゴリ</font></td>
<td width=\"?345\"?>
\\(.+\\)
</td>")
(defconst mixi-community-members-regexp
  "<td bgcolor=\"?#F2DDB7\"? width=\"?80\"?><font color=\"?#996600\"?>メンバー数</font></td>
<td width=\"?345\"?>
\\([0-9]+\\)人
</td>")
(defconst mixi-community-open-level-regexp
  "<td bgcolor=\"?#F2DDB7\"? width=\"?80\"?><font color=\"?#996600\"?>参加条件と<br />公開レベル</font></td>
<td width=\"?345\"?>
\\(.+\\)
</td>")
(defconst mixi-community-authority-regexp
  "<td bgcolor=\"?#F2DDB7\"? width=\"?80\"?><font color=\"?#996600\"?>トピック作成の権限</font></td>
<td width=\"?345\"?>
\\(.+\\)


</td>")
(defconst mixi-community-description-regexp
  "<td class=\"?h120\"? width=\"?345\"?>\\(.+\\)</td>")

(defun mixi-realize-community (community)
  "Realize a COMMUNITY."
  ;; FIXME: Check a expiration of cache?
  (unless (mixi-object-realized-p community)
    (with-mixi-retrieve (mixi-community-page community)
      (let ((case-fold-search t))
	(if (re-search-forward mixi-community-nodata-regexp nil t)
	    ;; FIXME: Set all members?
	    (mixi-community-set-name community "データがありません")
	  (if (re-search-forward mixi-community-name-regexp nil t)
	      (mixi-community-set-name community (match-string 1))
	    (mixi-realization-error 'cannot-find-name community))
	  (if (re-search-forward mixi-community-birthday-regexp nil t)
	      (mixi-community-set-birthday
	       community (encode-time 0 0 0
				      (string-to-number (match-string 3))
				      (string-to-number (match-string 2))
				      (string-to-number (match-string 1))))
	    (mixi-realization-error 'cannot-find-birthday community))
	  (if (re-search-forward mixi-community-owner-regexp nil t)
	      (if (string= (match-string 1) "home.pl")
		  (mixi-community-set-owner community (mixi-make-me))
		(mixi-community-set-owner community (mixi-make-friend
						     (match-string 2)
						     (match-string 3))))
	    (mixi-realization-error 'cannot-find-owner community))
	  (if (re-search-forward mixi-community-category-regexp nil t)
	      (mixi-community-set-category community (match-string 1))
	    (mixi-realization-error 'cannot-find-category community))
	  (if (re-search-forward mixi-community-members-regexp nil t)
	      (mixi-community-set-members community
					  (string-to-number (match-string 1)))
	    (mixi-realization-error 'cannot-find-members community))
	  (if (re-search-forward mixi-community-open-level-regexp nil t)
	      (mixi-community-set-open-level community (match-string 1))
	    (mixi-realization-error 'cannot-find-open-level community))
	  (if (re-search-forward mixi-community-authority-regexp nil t)
	      (mixi-community-set-authority community (match-string 1))
	    (mixi-realization-error 'cannot-find-authority community))
	  (if (re-search-forward mixi-community-description-regexp nil t)
	      (mixi-community-set-description community (match-string 1))
	    (mixi-realization-error 'cannot-find-description community)))))
    (mixi-object-touch community)))

(defun mixi-community-id (community)
  "Return the id of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aref (cdr community) 1))

(defun mixi-community-name (community)
  "Return the name of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (unless (aref (cdr community) 2)
    (mixi-realize-community community))
  (aref (cdr community) 2))

(defun mixi-community-birthday (community)
  "Return the birthday of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 3))

(defun mixi-community-owner (community)
  "Return the owner of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 4))

(defun mixi-community-category (community)
  "Return the category of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 5))

(defun mixi-community-members (community)
  "Return the members of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 6))

(defun mixi-community-open-level (community)
  "Return the open-level of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 7))

(defun mixi-community-authority (community)
  "Return the authority of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 8))

(defun mixi-community-description (community)
  "Return the description of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (mixi-realize-community community)
  (aref (cdr community) 9))

(defun mixi-community-set-name (community name)
  "Set the name of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 2 name))

(defun mixi-community-set-birthday (community birthday)
  "Set the birthday of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 3 birthday))

(defun mixi-community-set-owner (community owner)
  "Set the owner of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (unless (mixi-friend-p owner)
    (signal 'wrong-type-argument (list 'mixi-friend-p owner)))
  (aset (cdr community) 4 owner))

(defun mixi-community-set-category (community category)
  "Set the category of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 5 category))

(defun mixi-community-set-members (community members)
  "Set the name of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 6 members))

(defun mixi-community-set-open-level (community open-level)
  "Set the name of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 7 open-level))

(defun mixi-community-set-authority (community authority)
  "Set the name of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 8 authority))

(defun mixi-community-set-description (community description)
  "Set the name of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (aset (cdr community) 9 description))

(defmacro mixi-community-list-page (&optional friend)
  `(concat "/list_community.pl?page=%d"
	   (when ,friend (concat "&id=" (mixi-friend-id ,friend)))))

(defconst mixi-community-list-id-regexp
  "<a href=\"?view_community\\.pl\\?id=\\([0-9]+\\)\"?")
(defconst mixi-community-list-name-regexp
  "<td valign=\"?top\"?>\\(.+\\)([0-9]+)")

;;;###autoload
(defun mixi-get-communities (&rest friend-or-range)
  "Get communities of FRIEND."
  (when (> (length friend-or-range) 2)
    (signal 'wrong-number-of-arguments
	    (list 'mixi-get-communities (length friend-or-range))))
  (let ((friend (nth 0 friend-or-range))
	(range (nth 1 friend-or-range)))
    (when (or (not (mixi-friend-p friend)) (mixi-friend-p range))
      (setq friend (nth 1 friend-or-range))
      (setq range (nth 0 friend-or-range)))
    (unless (or (null friend) (mixi-friend-p friend))
      (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
    (let ((ids (mixi-get-matched-items (mixi-community-list-page friend)
				       mixi-community-list-id-regexp
				       range))
	  (names (mixi-get-matched-items (mixi-community-list-page friend)
					 mixi-community-list-name-regexp
					 range)))
      (let ((index 0)
	    ret)
	(while (< index (length ids))
	  (setq ret (cons (mixi-make-community (nth 0 (nth index ids))
					       (nth 0 (nth index names))) ret))
	  (incf index))
	(reverse ret)))))

(defmacro mixi-search-community-list-page (keyword)
  `(concat "/search_community.pl?page=%d&&sort=date&type=com&submit=main"
	   "&keyword=" (mixi-url-encode-and-quote-percent-string ,keyword)
	   "&category_id=0"))

(defconst mixi-search-community-list-regexp
  "<td WIDTH=90 VALIGN=top ROWSPAN=4 ALIGN=center background=http://img\\.mixi\\.jp/img/bg_line\\.gif><a href=\"view_community\\.pl\\?id=\\([0-9]+\\)\"><img SRC=\"http://img-c[0-9]+\\.mixi\\.jp/photo/comm/[^.]+\\.jpg\" VSPACE=3 border=0></a></td>
<td NOWRAP WIDTH=90 BGCOLOR=#FDF9F2><font COLOR=#996600>コミュニティ名</font></td>
<td COLSPAN=2 WIDTH=370 BGCOLOR=#FFFFFF>\\([^<]+\\)</td></tr>")

;; FIXME: Support category.
;;;###autoload
(defun mixi-search-communities (keyword &optional range)
  (let ((items (mixi-get-matched-items (mixi-search-community-list-page
					keyword)
				       mixi-search-community-list-regexp
				       range)))
    (mapcar (lambda (item)
	      (mixi-make-community (nth 0 item) (nth 1 item)))
	    items)))

;; Topic object.
(defvar mixi-topic-cache (make-hash-table :test 'equal))
(defun mixi-make-topic (community id &optional comment-count time title owner
				  content)
  "Return a topic object."
  (mixi-make-cache (list (mixi-community-id community) id)
		   (cons 'mixi-topic (vector nil community id comment-count
					     time title owner content))
		   mixi-topic-cache))

(defconst mixi-topic-url-regexp
  "/view_bbs\\.pl\\?id=\\([0-9]+\\)\\(&comment_count=\\([0-9]+\\)\\)?&comm_id=\\([0-9]+\\)")

(defun mixi-make-topic-from-url (url)
  "Return a topic object from URL."
  (when (string-match mixi-topic-url-regexp url)
    (let ((id (match-string 1 url))
	  (comment-count (match-string 3 url))
	  (community-id (match-string 4 url)))
      (mixi-make-topic (mixi-make-community community-id) id comment-count))))

(defmacro mixi-topic-p (topic)
  `(eq (mixi-object-class ,topic) 'mixi-topic))

(defmacro mixi-topic-page (topic)
  `(concat "/view_bbs.pl?id=" (mixi-topic-id ,topic)
	   "&comm_id=" (mixi-community-id (mixi-topic-community ,topic))))

(defconst mixi-topic-community-regexp
  "<td width=\"595\" background=\"http://img\\.mixi\\.jp/img/bg_w\\.gif\"><b>\\[\\(.+\\)\\] トピック</b></td>")
(defconst mixi-topic-time-regexp
  "<td rowspan=\"3\" width=\"110\" bgcolor=\"#ffd8b0\" align=\"center\" valign=\"top\" nowrap>\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日<br>\\([0-9]+\\):\\([0-9]+\\)</td>")
(defconst mixi-topic-title-regexp
  "<td bgcolor=\"#fff4e0\">&nbsp;\\([^<]+\\)</td>")
(defconst mixi-topic-owner-regexp
  "<td bgcolor=\"#fdf9f2\">&nbsp;<font color=\"#dfb479\"></font>&nbsp;<a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*?\\)\\(さん\\)?</a>")
(defconst mixi-topic-content-regexp
  "<table width=\"500\" border=\"0\" cellspacing=\"0\" cellpadding=\"5\"><tr><td class=\"h120\" width=\"500\"><table><tr>\\(<td width=\"130\" height=\"140\" align=\"center\" valign=\"middle\"><a href=\"javascript:void(0)\" onClick=\"MM_openBrWindow('show_bbs_picture\\.pl\\?id=[0-9]+&comm_id=[0-9]+&number=[0-9]+','pict','width=680,height=660,toolbar=no,scrollbars=yes,left=5,top=5')\"><img src=\"http://ic[0-9]+\\.mixi\\.jp/[^.]+\\.jpg\" border=\"0\"></a></td>\n\\)*</tr></table>\\(.+\\)</td></tr></table>")

(defun mixi-realize-topic (topic &optional page)
  "Realize a TOPIC."
  ;; FIXME: Check a expiration of cache?
  (unless (mixi-object-realized-p topic)
    (with-mixi-retrieve (or page (mixi-topic-page topic))
      (if (re-search-forward mixi-topic-community-regexp nil t)
	  (mixi-community-set-name (mixi-topic-community topic)
				   (match-string 1))
	(mixi-realization-error 'cannot-find-community topic))
      (if (re-search-forward mixi-topic-time-regexp nil t)
	  (mixi-topic-set-time
	   topic (encode-time 0 (string-to-number (match-string 5))
			      (string-to-number (match-string 4))
			      (string-to-number (match-string 3))
			      (string-to-number (match-string 2))
			      (string-to-number (match-string 1))))
	(mixi-realization-error 'cannot-find-time topic))
      (if (re-search-forward mixi-topic-title-regexp nil t)
	  (mixi-topic-set-title topic (match-string 1))
	(mixi-realization-error 'cannot-find-title topic))
      (if (re-search-forward mixi-topic-owner-regexp nil t)
	  (mixi-topic-set-owner topic (mixi-make-friend (match-string 1)
							(match-string 2)))
	(mixi-realization-error 'cannot-find-owner topic))
      (if (re-search-forward mixi-topic-content-regexp nil t)
	  (mixi-topic-set-content topic (match-string 2))
	(mixi-realization-error 'cannot-find-content topic)))
    (mixi-object-touch topic)))

(defun mixi-topic-community (topic)
  "Return the community of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aref (cdr topic) 1))

(defun mixi-topic-id (topic)
  "Return the id of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aref (cdr topic) 2))

(defun mixi-topic-comment-count (topic)
  "Return the comment-count of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aref (cdr topic) 3))

(defun mixi-topic-time (topic)
  "Return the time of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (mixi-realize-topic topic)
  (aref (cdr topic) 4))

(defun mixi-topic-title (topic)
  "Return the title of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (mixi-realize-topic topic)
  (aref (cdr topic) 5))

(defun mixi-topic-owner (topic)
  "Return the owner of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (mixi-realize-topic topic)
  (aref (cdr topic) 6))

(defun mixi-topic-content (topic)
  "Return the content of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (mixi-realize-topic topic)
  (aref (cdr topic) 7))

(defun mixi-topic-set-comment-count (topic comment-count)
  "Set the comment-count of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aset (cdr topic) 3 comment-count))

(defun mixi-topic-set-time (topic time)
  "Set the time of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aset (cdr topic) 4 time))

(defun mixi-topic-set-title (topic title)
  "Set the title of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aset (cdr topic) 5 title))

(defun mixi-topic-set-owner (topic owner)
  "Set the owner of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (unless (mixi-friend-p owner)
    (signal 'wrong-type-argument (list 'mixi-friend-p owner)))
  (aset (cdr topic) 6 owner))

(defun mixi-topic-set-content (topic content)
  "Set the content of TOPIC."
  (unless (mixi-topic-p topic)
    (signal 'wrong-type-argument (list 'mixi-topic-p topic)))
  (aset (cdr topic) 7 content))

(defmacro mixi-post-topic-page (community)
  `(concat "/add_bbs.pl?id=" (mixi-community-id community)))

;; FIXME: Support photos.
;;;###autoload
(defun mixi-post-topic (community title content)
  "Post a topic to COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (unless (stringp title)
    (signal 'wrong-type-argument (list 'stringp title)))
  (unless (stringp content)
    (signal 'wrong-type-argument (list 'stringp content)))
  (let ((fields `(("bbs_title" . ,title)
		  ("bbs_body" . ,content)
		  ("submit" . "main")))
	post-key)
    (with-mixi-post-form (mixi-post-topic-page community) fields
      (if (re-search-forward mixi-post-key-regexp nil t)
	  (setq post-key (match-string 1))
	(mixi-post-error 'cannot-find-key community)))
    (setq fields `(("post_key" . ,post-key)
		   ("bbs_title" . ,title)
		   ("bbs_body" . ,content)
		   ("submit" . "confirm")))
    (with-mixi-post-form (mixi-post-topic-page community) fields
      (unless (re-search-forward mixi-post-succeed-regexp nil t)
	(mixi-post-error 'cannot-find-succeed community)))))

;; Event object.
(defvar mixi-event-cache (make-hash-table :test 'equal))
(defun mixi-make-event (community id &optional comment-count time title owner
				  date place detail limit members)
  "Return a event object."
  (mixi-make-cache (list (mixi-community-id community) id)
		   (cons 'mixi-event (vector nil community id comment-count
					     time title owner date place
					     detail limit members))
		   mixi-event-cache))

(defconst mixi-event-url-regexp
  "/view_event\\.pl\\?id=\\([0-9]+\\)\\(&comment_count=\\([0-9]+\\)\\)?&comm_id=\\([0-9]+\\)")

(defun mixi-make-event-from-url (url)
  "Return a event object from URL."
  (when (string-match mixi-event-url-regexp url)
    (let ((id (match-string 1 url))
	  (comment-count (match-string 3 url))
	  (community-id (match-string 4 url)))
      (mixi-make-event (mixi-make-community community-id) id comment-count))))

(defmacro mixi-event-p (event)
  `(eq (mixi-object-class ,event) 'mixi-event))

(defmacro mixi-event-page (event)
  `(concat "/view_event.pl?id=" (mixi-event-id ,event)
	   "&comm_id=" (mixi-community-id (mixi-event-community ,event))))

(defconst mixi-event-community-regexp
  "<td width=\"?595\"? background=\"?http://img\\.mixi\\.jp/img/bg_w\\.gif\"?><b>\\[\\(.+\\)\\] イベント</b></td>")
(defconst mixi-event-time-regexp
  "<td rowspan=\"?11\"? bgcolor=\"?#FFD8B0\"? align=\"?center\"? valign=\"?top\"? width=\"?110\"?>
?\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日<br>
?\\([0-9]+\\):\\([0-9]+\\)
</td>")
(defconst mixi-event-title-regexp
  "<td bgcolor=\"?#FFF4E0\"?\\( width=\"?410\"?\\)?>&nbsp;\\([^<]+\\)</td>")
(defconst mixi-event-owner-regexp
  "<td bgcolor=\"?#FDF9F2\"?>&nbsp;<a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*\\)</a>")
(defconst mixi-event-owner-seceded-regexp
  "<td bgcolor=\"?#FDF9F2\"?>&nbsp;\\((mixi 退会済)\\)")
(defconst mixi-event-date-regexp
  "<td bgcolor=\"?#FFFFFF\"? align=\"?center\"? nowrap>開催日時</td>
<td bgcolor=\"?#FFFFFF\"?>
&nbsp;\\(.+\\)
</td>")
(defconst mixi-event-place-regexp
  "<td bgcolor=\"?#FFFFFF\"? align=\"?center\"? nowrap>開催場所</td>
<td bgcolor=\"?#FFFFFF\"?>
&nbsp;\\(.+\\)
</td>")
(defconst mixi-event-detail-regexp
  "<td bgcolor=\"?#FFFFFF\"? align=\"?center\"? nowrap>詳細</td>
<td bgcolor=\"?#FFFFFF\"? class=\"?h120\"? width=\"?410\"?>
<div style=\"?padding:5px\"?>\\(.+\\)</div>")
(defconst mixi-event-limit-regexp
  "<td bgcolor=\"?#FFFFFF\"? align=\"?center\"? nowrap>募集期限</td>
?<td bgcolor=\"?#FFFFFF\"?>&nbsp;\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日</td>")
(defconst mixi-event-members-regexp
  "<td bgcolor=\"?#FFFFFF\"? align=\"?center\"? nowrap>参加者</td>
<td bgcolor=\"?#FFFFFF\"?>

?
?<table border=\"?0\"? cellspacing=\"?0\"? cellpadding=\"?0\"? width=\"?100%\"?>
<tr>

?<td>&nbsp;\\(.+\\)</td>")

(defun mixi-realize-event (event &optional page)
  "Realize a EVENT."
  ;; FIXME: Check a expiration of cache?
  (unless (mixi-object-realized-p event)
    (with-mixi-retrieve (or page (mixi-event-page event))
      (let ((case-fold-search t))
	(if (re-search-forward mixi-event-community-regexp nil t)
	    (mixi-community-set-name (mixi-event-community event)
				     (match-string 1))
	  (mixi-realization-error 'cannot-find-community event))
	(if (re-search-forward mixi-event-time-regexp nil t)
	    (mixi-event-set-time
	     event (encode-time 0 (string-to-number (match-string 5))
				(string-to-number (match-string 4))
				(string-to-number (match-string 3))
				(string-to-number (match-string 2))
				(string-to-number (match-string 1))))
	  (mixi-realization-error 'cannot-find-time event))
	(if (re-search-forward mixi-event-title-regexp nil t)
	    (mixi-event-set-title event (match-string 2))
	  (mixi-realization-error 'cannot-find-title event))
	(if (re-search-forward mixi-event-owner-regexp nil t)
	    (mixi-event-set-owner event (mixi-make-friend (match-string 1)
							  (match-string 2)))
	  (if (re-search-forward mixi-event-owner-seceded-regexp nil t)
	      (mixi-event-set-owner event
				    (mixi-make-friend nil (match-string 1)))
	    (mixi-realization-error 'cannot-find-owner event)))
	(if (re-search-forward mixi-event-date-regexp nil t)
	    (mixi-event-set-date event (match-string 1))
	  (mixi-realization-error 'cannot-find-date event))
	(if (re-search-forward mixi-event-place-regexp nil t)
	    (mixi-event-set-place event (match-string 1))
	  (mixi-realization-error 'cannot-find-place event))
	(if (re-search-forward mixi-event-detail-regexp nil t)
	    (mixi-event-set-detail event (match-string 1))
	  (mixi-realization-error 'cannot-find-detail event))
	(when (re-search-forward mixi-event-limit-regexp nil t)
	  (mixi-event-set-limit
	   event (encode-time 0 0 0 (string-to-number (match-string 3))
			      (string-to-number (match-string 2))
			      (string-to-number (match-string 1)))))
	(if (re-search-forward mixi-event-members-regexp nil t)
	    (mixi-event-set-members event (match-string 1))
	  (mixi-realization-error 'cannot-find-members event))))
    (mixi-object-touch event)))

(defun mixi-event-community (event)
  "Return the community of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aref (cdr event) 1))

(defun mixi-event-id (event)
  "Return the id of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aref (cdr event) 2))

(defun mixi-event-comment-count (event)
  "Return the comment-count of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aref (cdr event) 3))

(defun mixi-event-time (event)
  "Return the time of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 4))

(defun mixi-event-title (event)
  "Return the title of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 5))

(defun mixi-event-owner (event)
  "Return the owner of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 6))

(defun mixi-event-date (event)
  "Return the date of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 7))

(defun mixi-event-place (event)
  "Return the place of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 8))

(defun mixi-event-detail (event)
  "Return the detail of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 9))

(defun mixi-event-limit (event)
  "Return the limit of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 10))

(defun mixi-event-members (event)
  "Return the members of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (mixi-realize-event event)
  (aref (cdr event) 11))

(defun mixi-event-set-comment-count (event comment-count)
  "Set the comment-count of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 3 comment-count))

(defun mixi-event-set-time (event time)
  "Set the time of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 4 time))

(defun mixi-event-set-title (event title)
  "Set the title of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 5 title))

(defun mixi-event-set-owner (event owner)
  "Set the owner of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (unless (mixi-friend-p owner)
    (signal 'wrong-type-argument (list 'mixi-friend-p owner)))
  (aset (cdr event) 6 owner))

(defun mixi-event-set-date (event date)
  "Set the date of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 7 date))

(defun mixi-event-set-place (event place)
  "Set the place of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 8 place))

(defun mixi-event-set-detail (event detail)
  "Set the detail of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 9 detail))

(defun mixi-event-set-limit (event limit)
  "Set the limit of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 10 limit))

(defun mixi-event-set-members (event members)
  "Set the members of EVENT."
  (unless (mixi-event-p event)
    (signal 'wrong-type-argument (list 'mixi-event-p event)))
  (aset (cdr event) 11 members))

;; BBS object.
(defconst mixi-bbs-list '(mixi-topic mixi-event))

(defmacro mixi-bbs-p (bbs)
  `(memq (mixi-object-class ,bbs) mixi-bbs-list))

(defun mixi-bbs-community (bbs)
  "Return the community of BBS."
  (unless (mixi-bbs-p bbs)
    (signal 'wrong-type-argument (list 'mixi-bbs-p bbs)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name bbs) "-community"))))
    (funcall func bbs)))

(defun mixi-bbs-comment-count (bbs)
  "Return the comment-count of BBS."
  (unless (mixi-bbs-p bbs)
    (signal 'wrong-type-argument (list 'mixi-bbs-p bbs)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name bbs) "-comment-count"))))
    (funcall func bbs)))

(defun mixi-bbs-set-comment-count (bbs count)
  "Set the comment-count of BBS."
  (unless (mixi-bbs-p bbs)
    (signal 'wrong-type-argument (list 'mixi-bbs-p bbs)))
  (let ((func (intern (concat mixi-object-prefix
			      (mixi-object-name bbs) "-set-comment-count"))))
    (funcall func bbs count)))

(defalias 'mixi-bbs-id 'mixi-object-id)
(defalias 'mixi-bbs-time 'mixi-object-time)
(defalias 'mixi-bbs-title 'mixi-object-title)
(defalias 'mixi-bbs-owner 'mixi-object-owner)
(defalias 'mixi-bbs-content 'mixi-object-content)

(defmacro mixi-bbs-list-page (community)
  `(concat "/list_bbs.pl?page=%d"
	   "&id=" (mixi-community-id ,community)))

(defconst mixi-bbs-list-regexp
  "<a href=view_\\(bbs\\|event\\)\\.pl\\?id=\\([0-9]+\\)")

;;;###autoload
(defun mixi-get-bbses (community &optional range)
  "Get bbese of COMMUNITY."
  (unless (mixi-community-p community)
    (signal 'wrong-type-argument (list 'mixi-community-p community)))
  (let ((items (mixi-get-matched-items (mixi-bbs-list-page community)
				       mixi-bbs-list-regexp
				       range)))
    (mapcar (lambda (item)
	      (let ((name (nth 0 item)))
		(when (string= name "bbs")
		  (setq name "topic"))
		(let ((func (intern (concat "mixi-make-" name))))
		  (funcall func community (nth 1 item)))))
	    items)))

(defmacro mixi-new-bbs-list-page ()
  `(concat "/new_bbs.pl?page=%d"))

(defconst mixi-new-bbs-list-regexp
  "<a href=\"view_\\(bbs\\|event\\)\\.pl\\?id=\\([0-9]+\\)&comment_count=\\([0-9]+\\)&comm_id=\\([0-9]+\\)\" class=\"new_link\">")

;;;###autoload
(defun mixi-get-new-bbses (&optional range)
  "Get new topics."
  (let ((items (mixi-get-matched-items (mixi-new-bbs-list-page)
				       mixi-new-bbs-list-regexp
				       range)))
    (delq nil
	  (mapcar (lambda (item)
		    (let ((name (nth 0 item)))
		      (when (string= name "bbs")
			(setq name "topic"))
		      (let* ((func (intern (concat "mixi-make-" name)))
			     (bbs (funcall func
					   (mixi-make-community (nth 3 item))
					   (nth 1 item)))
			     (comment-count (mixi-bbs-comment-count bbs))
			     (count (string-to-number (nth 2 item))))
			(when (or (null comment-count)
				  (< comment-count count))
			  (mixi-bbs-set-comment-count bbs count)
			  bbs))))
		  items))))
 
(defmacro mixi-search-bbs-list-page (keyword)
  `(concat "/search_topic.pl?page=%d&type=top&submit=search"
	   "&keyword=" (mixi-url-encode-and-quote-percent-string ,keyword)
	   "&community_id=0&category_id=0"))

(defconst mixi-search-bbs-list-regexp
  "<a href=\"view_\\(bbs\\|event\\)\\.pl\\?id=\\([0-9]+\\)&comm_id=\\([0-9]+\\)\"><img src=http://img\\.mixi\\.jp/img/shbtn\\.gif ALT=詳細を見る BORDER=0 WIDTH=104 HEIGHT=19></a>")

;; FIXME: Support community and category.
;;;###autoload
(defun mixi-search-bbses (keyword &optional range)
  (let ((items (mixi-get-matched-items (mixi-search-bbs-list-page keyword)
				       mixi-search-bbs-list-regexp
				       range)))
    (mapcar (lambda (item)
	      (let ((name (nth 0 item)))
		(when (string= name "bbs")
		  (setq name "topic"))
		(let ((func (intern (concat "mixi-make-" name))))
		  (funcall func (mixi-make-community (nth 2 item))
			   (nth 1 item)))))
	    items)))

;; Parent object.
(defmacro mixi-parent-p (object)
  `(or (eq (mixi-object-class ,object) 'mixi-diary)
       (mixi-bbs-p ,object)))

(defun mixi-realize-parent (parent &optional page)
  "Realize a PARENT."
  (unless (mixi-parent-p parent)
    (signal 'wrong-type-argument (list 'mixi-parent-p parent)))
  (let ((func (intern (concat mixi-object-prefix "realize-"
			      (mixi-object-name parent)))))
    (funcall func parent page)))

;; Comment object.
(defun mixi-make-comment (parent owner time content)
  "Return a comment object."
  (cons 'mixi-comment (vector parent owner time content)))

(defmacro mixi-comment-p (comment)
  `(eq (mixi-object-class ,comment) 'mixi-comment))

(defun mixi-comment-parent (comment)
  "Return the parent of COMMENT."
  (unless (mixi-comment-p comment)
    (signal 'wrong-type-argument (list 'mixi-comment-p comment)))
  (aref (cdr comment) 0))

(defun mixi-comment-owner (comment)
  "Return the owner of COMMENT."
  (unless (mixi-comment-p comment)
    (signal 'wrong-type-argument (list 'mixi-comment-p comment)))
  (aref (cdr comment) 1))

(defun mixi-comment-time (comment)
  "Return the time of COMMENT."
  (unless (mixi-comment-p comment)
    (signal 'wrong-type-argument (list 'mixi-comment-p comment)))
  (aref (cdr comment) 2))

(defun mixi-comment-content (comment)
  "Return the content of COMMENT."
  (unless (mixi-comment-p comment)
    (signal 'wrong-type-argument (list 'mixi-comment-p comment)))
  (aref (cdr comment) 3))

(defun mixi-diary-comment-list-page (diary)
  (concat "/view_diary.pl?full=1"
	  "&id=" (mixi-diary-id diary)
	  "&owner_id=" (mixi-friend-id (mixi-diary-owner diary))))

;; FIXME: Split regexp to time, owner(id and nick) and contents.
(defconst mixi-diary-comment-list-regexp
  "<td rowspan=\"2\" align=\"center\" width=\"95\" bgcolor=\"#f2ddb7\" nowrap>
\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日<br>\\([0-9]+\\):\\([0-9]+\\)\\(<br>
<input type=checkbox name=comment_id value=\".+\">
\\|\\)
</td>
<td ALIGN=center BGCOLOR=#FDF9F2 WIDTH=430>
<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"410\">
<tr>
\\(<td>\\)
<a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*\\)</a>

\\(<font color=\"#f2ddb7\">|</font> <a href=[^>]+>削除</a>

\\|\\)</td>
</tr>
</table>
</td>
</tr>
<!-- [^ ]+ : start -->
<tr>
<td bgcolor=\"#ffffff\">
<table BORDER=0 CELLSPACING=0 CELLPADDING=[35] WIDTH=410>
<tr>
<td CLASS=h12 width=\"410\">
\\(.+\\)
</td></tr></table>")

(defun mixi-topic-comment-list-page (topic)
  (concat "/view_bbs.pl?page=all"
	  "&id=" (mixi-topic-id topic)
	  "&comm_id=" (mixi-community-id (mixi-topic-community topic))))

;; FIXME: Split regexp to time, owner(id and nick) and contents.
(defconst mixi-topic-comment-list-regexp
  "<tr valign=\"top\">
<td rowspan=\"2\" width=\"110\" bgcolor=\"#f2ddb7\" align=\"center\" nowrap>
\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日<br>
\\([0-9]+\\):\\([0-9]+\\)<br>
\\(<input type=\"checkbox\" name=\"comment_id\" value=\".+\">
\\|\\)</td>
<td bgcolor=\"#fdf9f2\">&nbsp;<font color=\"#f8a448\">
<b>[^<]+</b>:</font>&nbsp;
\\(
\\|\\) *<a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*\\)</a>

?\\(

\\|<font color=\"#f2ddb7\">|&nbsp;</font><a href=\"delete_bbs_comment\\.pl\\?id=[0-9]+&comm_id=[0-9]+&comment_id=[0-9]+\">削除</a>
\\|\\)</td>
</tr>
<tr>
<td bgcolor=\"#ffffff\" align=\"center\">
<table border=\"0\" cellspacing=\"0\" cellpadding=\"5\" width=\"500\">
<tr>
<td class=\"h120\" width=\"500\">
\\(\\(.\\|\r?\n\\)*?\\)
</td>
</tr>
</table>
</td>
</tr>")

(defun mixi-event-comment-list-page (event)
  (concat "/view_event.pl?page=all"
	  "&id=" (mixi-event-id event)
	  "&comm_id=" (mixi-community-id (mixi-event-community event))))

;; FIXME: Split regexp to time, owner(id and nick) and contents.
(defconst mixi-event-comment-list-regexp
  "<tr>
<td ROWSPAN=2 ALIGN=center BGCOLOR=#F2DDB7 WIDTH=110>
\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日<br>
\\([0-9]+\\):\\([0-9]+\\)<br>
\\(</td>\\)
\\(<td BGCOLOR=#FDF9F2>\\)
<font COLOR=#F8A448><b>[^<]+</b> :</font>
<a HREF=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*\\)</a>

\\(<font COLOR=#F2DDB7>|</font>
<a href=\"delete_bbs_comment\\.pl\\?id=[0-9]+&comm_id=[0-9]+&comment_id=[0-9]+&type=event\">削除</a>

\\|\\)</td>
</tr>
<tr>
<td ALIGN=center BGCOLOR=#FFFFFF>
<table BORDER=0 CELLSPACING=0 CELLPADDING=5 WIDTH=500>
<tr>
<td CLASS=h120 width=\"500\">

\\(.+\\)
</td>
</tr>
</table>
</td>
</tr>")

;;;###autoload
(defun mixi-get-comments (parent &optional range)
  "Get comments of PARENT."
  (unless (mixi-parent-p parent)
    (signal 'wrong-type-argument (list 'mixi-parent-p parent)))
  (let* ((name (mixi-object-name parent))
	 (list-page (intern (concat mixi-object-prefix name
				    "-comment-list-page")))
	 (regexp (eval (intern (concat mixi-object-prefix name
				       "-comment-list-regexp"))))
	 (page (funcall list-page parent)))
    (unless (mixi-object-realized-p parent)
      (mixi-realize-parent parent page)
      (setq page nil))
    (let ((items (mixi-get-matched-items page regexp range t)))
      (mapcar (lambda (item)
		(mixi-make-comment parent (mixi-make-friend
					   (nth 7 item) (nth 8 item))
				   (encode-time
				    0
				    (string-to-number (nth 4 item))
				    (string-to-number (nth 3 item))
				    (string-to-number (nth 2 item))
				    (string-to-number (nth 1 item))
				    (string-to-number (nth 0 item)))
				   (nth 10 item)))
	      items))))

(defmacro mixi-new-comment-list-page ()
  `(concat "/new_comment.pl?page=%d"))

(defconst mixi-new-comment-list-regexp
  "<a href=\"view_diary\\.pl\\?id=\\([0-9]+\\)&owner_id=\\([0-9]+\\)&comment_count=\\([0-9]+\\)\" class=\"new_link\">")

;;;###autoload
(defun mixi-get-new-comments (&optional range)
  "Get new comments."
  (let ((items (mixi-get-matched-items (mixi-new-comment-list-page)
				       mixi-new-comment-list-regexp
				       range)))
    (delq nil
	  (mapcar (lambda (item)
		    (let* ((diary (mixi-make-diary
				   (mixi-make-friend (nth 1 item))
				   (nth 0 item)))
			   (comment-count (mixi-diary-comment-count diary))
			   (count (string-to-number (nth 2 item))))
		      (when (or (null comment-count)
				(< comment-count count))
			(mixi-diary-set-comment-count diary count)
			diary)))
		  items))))

(defun mixi-post-diary-comment-page (diary)
  (concat "/add_comment.pl?&diary_id=" (mixi-diary-id diary)))

(defun mixi-post-topic-comment-page (topic)
  (concat "/add_bbs_comment.pl?id=" (mixi-topic-id topic)
	  "&comm_id=" (mixi-community-id (mixi-topic-community topic))))

(defun mixi-post-event-comment-page (event)
  (concat "/add_event_comment.pl?id=" (mixi-event-id event)
	  "&comm_id=" (mixi-community-id (mixi-event-community event))))

;; FIXME: Support photos.
;;;###autoload
(defun mixi-post-comment (parent content)
  "Post a comment to PARENT."
  (unless (mixi-object-p parent)
    (signal 'wrong-type-argument (list 'mixi-object-p parent)))
  (unless (stringp content)
    (signal 'wrong-type-argument (list 'stringp content)))
  (let* ((name (mixi-object-name parent))
	 (page (intern (concat mixi-object-prefix "post-" name
			       "-comment-page")))
	 fields post-key)
    (if (mixi-diary-p parent)
	(setq fields
	      `(("owner_id" . ,(mixi-friend-id (mixi-diary-owner parent)))
		("comment_body" . ,content)))
      (setq fields `(("comment" . ,content))))
    (with-mixi-post-form (funcall page parent) fields
      (if (re-search-forward mixi-post-key-regexp nil t)
	  (setq post-key (match-string 1))
	(mixi-post-error 'cannot-find-key parent)))
    (if (mixi-diary-p parent)
	(setq fields
	      `(("post_key" . ,post-key)
		("owner_id" . ,(mixi-friend-id (mixi-diary-owner parent)))
		("comment_body" . ,content)
		("submit" . "confirm")))
      (setq fields `(("post_key" . ,post-key)
		     ("comment" . ,content)
		     ("submit" . "confirm"))))
    (with-mixi-post-form (funcall page parent) fields
      (unless (re-search-forward mixi-post-succeed-regexp nil t)
	(mixi-post-error 'cannot-find-succeed parent)))))

;; Message object.
(defconst mixi-message-box-list '(inbox outbox savebox thrash)) ; thrash?

(defmacro mixi-message-box-p (box)
  `(memq ,box mixi-message-box-list))

(defun mixi-message-box-name (box)
  "Return the name of BOX."
  (unless (mixi-message-box-p box)
    (signal 'wrong-type-argument (list 'mixi-message-box-p box)))
  (symbol-name box))

(defvar mixi-message-cache (make-hash-table :test 'equal))
(defun mixi-make-message (id box &optional owner title time content)
  "Return a message object."
  (mixi-make-cache (list id box)
		   (cons 'mixi-message (vector nil id box owner title time
					       content))
		   mixi-message-cache))

(defconst mixi-message-url-regexp
  "/view_message\\.pl\\?id=\\([a-z0-9]+\\)&box=\\([a-z]+\\)")

(defun mixi-make-message-from-url (url)
  "Return a message object from URL."
  (when (string-match mixi-message-url-regexp url)
    (let ((id (match-string 1 url))
	  (box (match-string 2 url)))
      (mixi-make-message id box))))

(defmacro mixi-message-p (message)
  `(eq (mixi-object-class ,message) 'mixi-message))

(defmacro mixi-message-page (message)
  `(concat "/view_message.pl?id=" (mixi-message-id ,message)
	   "&box=" (mixi-message-box ,message)))

(defconst mixi-message-owner-regexp
  "<font COLOR=#996600>\\(差出人\\|宛&nbsp;先\\)</font>&nbsp;:&nbsp;<a HREF=\"show_friend\\.pl\\?id=\\([0-9]+\\)\">\\(.*\\)\\(</a>\\|</td>\\)")
(defconst mixi-message-time-regexp
"<font COLOR=#996600>日\\(　\\|&nbsp;\\)付</font>&nbsp;:&nbsp;\\([0-9]+\\)年\\([0-9]+\\)月\\([0-9]+\\)日 \\([0-9]+\\)時\\([0-9]+\\)分&nbsp;&nbsp;")
(defconst mixi-message-title-regexp
"<font COLOR=#996600>件\\(　\\|&nbsp;\\)名</font>&nbsp;:&nbsp;\\(.*\\)\n?</td>")
(defconst mixi-message-content-regexp
  "<tr><td CLASS=h120 width=\"500\">\\(.*\\)</td></tr>")

(defun mixi-realize-message (message)
  "Realize a MESSAGE."
  (unless (mixi-object-realized-p message)
    (with-mixi-retrieve (mixi-message-page message)
      (if (re-search-forward mixi-message-owner-regexp nil t)
	  (mixi-message-set-owner message
				  (mixi-make-friend (match-string 2)
						    (match-string 3)))
	(mixi-realization-error 'cannot-find-owner message))
      (if (re-search-forward mixi-message-time-regexp nil t)
	  (mixi-message-set-time
	   message (encode-time 0 (string-to-number (match-string 6))
				(string-to-number (match-string 5))
				(string-to-number (match-string 4))
				(string-to-number (match-string 3))
				(string-to-number (match-string 2))))
	(mixi-realization-error 'cannot-find-time message))
      (if (re-search-forward mixi-message-title-regexp nil t)
	  (mixi-message-set-title message (match-string 2))
	(mixi-realization-error 'cannot-find-title message))
      (if (re-search-forward mixi-message-content-regexp nil t)
	  (mixi-message-set-content message (match-string 1))
	(mixi-realization-error 'cannot-find-content message)))
    (mixi-object-touch message)))

(defun mixi-message-id (message)
  "Return the id of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (aref (cdr message) 1))

(defun mixi-message-box (message)
  "Return the box of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (aref (cdr message) 2))

(defun mixi-message-owner (message)
  "Return the owner of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (mixi-realize-message message)
  (aref (cdr message) 3))

(defun mixi-message-title (message)
  "Return the title of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (mixi-realize-message message)
  (aref (cdr message) 4))

(defun mixi-message-time (message)
  "Return the date of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (mixi-realize-message message)
  (aref (cdr message) 5))

(defun mixi-message-content (message)
  "Return the content of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (mixi-realize-message message)
  (aref (cdr message) 6))

(defun mixi-message-set-owner (message owner)
  "Set the owner of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (aset (cdr message) 3 owner))

(defun mixi-message-set-title (message title)
  "Set the title of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (aset (cdr message) 4 title))

(defun mixi-message-set-time (message time)
  "Set the date of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (aset (cdr message) 5 time))

(defun mixi-message-set-content (message content)
  "Set the content of MESSAGE."
  (unless (mixi-message-p message)
    (signal 'wrong-type-argument (list 'mixi-message-p message)))
  (aset (cdr message) 6 content))

(defmacro mixi-message-list-page (&optional box)
  `(concat "/list_message.pl?page=%d"
	   (when ,box (concat "&box=" ,box))))

(defconst mixi-message-list-regexp
  "<td><a HREF=\"view_message\\.pl\\?id=\\(.+\\)&box=\\(.+\\)\">")

;;;###autoload
(defun mixi-get-messages (&rest box-or-range)
  "Get messages of BOX."
  (when (> (length box-or-range) 2)
    (signal 'wrong-number-of-arguments
	    (list 'mixi-get-messages (length box-or-range))))
  (let ((box (nth 0 box-or-range))
	(range (nth 1 box-or-range)))
    (when (or (not (mixi-message-box-p box))
	      (mixi-message-box-p range))
      (setq box (nth 1 box-or-range))
      (setq range (nth 0 box-or-range)))
    (let ((items (mixi-get-matched-items
		  (mixi-message-list-page
		   (when box (mixi-message-box-name box)))
		  mixi-message-list-regexp
		  range)))
      (mapcar (lambda (item)
		(mixi-make-message (nth 0 item) (nth 1 item)))
	      items))))

(defmacro mixi-post-message-page (friend)
  `(concat "/send_message.pl?id=" (mixi-friend-id friend)))

(defconst mixi-post-message-key-regexp
  "<input name=post_key type=hidden value=\\([a-z0-9]+\\)>")

(defconst mixi-post-message-succeed-regexp
  "<b>送信完了</b>しました。")

;;;###autoload
(defun mixi-post-message (friend title content)
  "Post a message to FRIEND."
  (unless (mixi-friend-p friend)
    (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
  (unless (stringp title)
    (signal 'wrong-type-argument (list 'stringp title)))
  (unless (stringp content)
    (signal 'wrong-type-argument (list 'stringp content)))
  (let ((fields `(("subject" . ,title)
		  ("body" . ,content)
		  ("submit" . "main")))
	post-key)
    (with-mixi-post-form (mixi-post-message-page friend) fields
      (if (re-search-forward mixi-post-message-key-regexp nil t)
	  (setq post-key (match-string 1))
	(mixi-post-error 'cannot-find-key friend)))
    (setq fields `(("post_key" . ,post-key)
		   ("subject" . ,title)
		   ("body" . ,content)
		   ("yes" . "　送　信　")
		   ("submit" . "confirm")))
    (with-mixi-post-form (mixi-post-message-page friend) fields
      (unless (re-search-forward mixi-post-message-succeed-regexp nil t)
	(mixi-post-error 'cannot-find-succeed friend)))))

;; Introduction object.
(defun mixi-make-introduction (parent owner content)
  "Return a introduction object."
  (cons 'mixi-introduction (vector parent owner content)))

(defmacro mixi-introduction-p (introduction)
  `(eq (mixi-object-class ,introduction) 'mixi-introduction))

(defun mixi-introduction-parent (introduction)
  "Return the parent of INTRODUCTION."
  (unless (mixi-introduction-p introduction)
    (signal 'wrong-type-argument (list 'mixi-introduction-p introduction)))
  (aref (cdr introduction) 0))

(defun mixi-introduction-owner (introduction)
  "Return the owner of INTRODUCTION."
  (unless (mixi-introduction-p introduction)
    (signal 'wrong-type-argument (list 'mixi-introduction-p introduction)))
  (aref (cdr introduction) 1))

(defun mixi-introduction-content (introduction)
  "Return the content of INTRODUCTION."
  (unless (mixi-introduction-p introduction)
    (signal 'wrong-type-argument (list 'mixi-introduction-p introduction)))
  (aref (cdr introduction) 3))

(defmacro mixi-introduction-list-page (&optional friend)
  `(concat "/show_intro.pl?page=%d"
	   (when ,friend (concat "&id=" (mixi-friend-id ,friend)))))

(defconst mixi-introduction-list-regexp
  "<tr bgcolor=#FFFFFF>
<td WIDTH=150 background=http://img\\.mixi\\.jp/img/bg_line\\.gif align=\"center\"><a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\"><img src=\".+\" border=0><br>
\\(.*\\)</td></a>

<td WIDTH=480>
\\(関係：.+<br>


\\(\\(.\\|\n<br>\\)+\\)\\|
\\(\\(.\\|\n<br>\\)+\\)\\)




</td>
</tr>")
(defconst mixi-my-introduction-list-regexp
  "<tr bgcolor=#FFFFFF>
<td WIDTH=150 background=http://img\\.mixi\\.jp/img/bg_line\\.gif align=\"center\"><a href=\"show_friend\\.pl\\?id=\\([0-9]+\\)\"><img src=\".+\" border=0><br>
\\(.*\\)</td></a>


<td WIDTH=480>
\\(関係：.+<br>


\\(\\(.\\|\n<br>\\)+\\)\\|
\\(\\(.\\|\n<br>\\)+\\)\\)


<br>
<a href=\"edit_intro\\.pl\\?id=\\1&type=edit\">この友人を紹介する</a>


<BR>
<a href=\"delete_intro\\.pl\\?id=\\1\">削除</a>

</td>
</tr>")

;;;###autoload
(defun mixi-get-introductions (&rest friend-or-range)
  "Get introductions of FRIEND."
  (when (> (length friend-or-range) 2)
    (signal 'wrong-number-of-arguments
	    (list 'mixi-get-introduction (length friend-or-range))))
  (let ((friend (nth 0 friend-or-range))
	(range (nth 1 friend-or-range)))
    (when (or (not (mixi-friend-p friend)) (mixi-friend-p range))
      (setq friend (nth 1 friend-or-range))
      (setq range (nth 0 friend-or-range)))
    (unless (or (null friend) (mixi-friend-p friend))
      (signal 'wrong-type-argument (list 'mixi-friend-p friend)))
    (let* ((regexp (if friend mixi-introduction-list-regexp
		     mixi-my-introduction-list-regexp))
	   (items (mixi-get-matched-items (mixi-introduction-list-page friend)
					  regexp
					  range)))
      (mapcar (lambda (item)
		(mixi-make-introduction (or friend (mixi-make-me))
					(mixi-make-friend (nth 0 item)
							  (nth 1 item))
					(nth 2 item)))
	      items))))

;; News object.
(defvar mixi-news-cache (make-hash-table :test 'equal))
(defun mixi-make-news (media-id id &optional media time title content)
  "Return a news object."
  (mixi-make-cache (list media-id id)
		   (cons 'mixi-news (vector nil media-id id media time title
					    content))
		   mixi-news-cache))

(defconst mixi-news-url-regexp
  "/view_news\\.pl\\?id=\\([0-9]+\\)&media_id=\\([0-9]+\\)")

(defun mixi-make-news-from-url (url)
  "Return a news object from URL."
  (when (string-match mixi-news-url-regexp url)
    (let ((id (match-string 1 url))
	  (media-id (match-string 2 url)))
      (mixi-make-news media-id id))))

(defmacro mixi-news-p (news)
  `(eq (mixi-object-class ,news) 'mixi-news))

(defmacro mixi-news-page (news)
  `(concat "http://news.mixi.jp/view_news.pl?id=" (mixi-news-id ,news)
	   "&media_id=" (mixi-news-media-id ,news)))


(defconst mixi-news-finished-regexp
  "申し訳ございませんが、このニュースは掲載が終了したか、URLが間違っていいるためご覧いただけません。</td>")
(defconst mixi-news-title-regexp
  "<td HEIGHT=\"46\" STYLE=\"font-weight: bold;font-size: 14px;\" CLASS=\"h130\">\\(.+\\)\\(
\\)?</td>")
(defconst mixi-news-media-time-regexp
  "<td COLSPAN=\"2\" ALIGN=\"right\">(\\(.+\\)&nbsp;-&nbsp;\\([0-9]+\\)月\\([0-9]+\\)日 \\([0-9]+\\):\\([0-9]+\\))</td></tr>")
(defconst mixi-news-content-regexp
  "<td CLASS=\"h150\">

\\(.+\\)
<br>
\\(.*
\\)?

\\(</td>\\|<br>\\)")

(defun mixi-realize-news (news)
  "Realize a NEWS."
  ;; FIXME: Check a expiration of cache?
  (unless (mixi-object-realized-p news)
    (with-mixi-retrieve (mixi-news-page news)
      (if (re-search-forward mixi-news-finished-regexp nil t)
	  (mixi-news-set-content news (match-string 0))
	(if (re-search-forward mixi-news-title-regexp nil t)
	    (mixi-news-set-title news (match-string 1))
	  (mixi-realization-error 'cannot-find-title news))
	(if (re-search-forward mixi-news-media-time-regexp nil t)
	    (progn
	      (mixi-news-set-media news (match-string 1))
	      (let ((year (nth 5 (decode-time (current-time))))
		    (month (nth 4 (decode-time (current-time))))
		    (month-of-item (string-to-number (match-string 2))))
		(when (> month-of-item month)
		  (decf year))
		(mixi-news-set-time
		 news (encode-time 0 (string-to-number (match-string 5))
				   (string-to-number (match-string 4))
				   (string-to-number (match-string 3))
				   month year))))
	  (mixi-realization-error 'cannot-find-media-time news))
	(if (re-search-forward mixi-news-content-regexp nil t)
	    (mixi-news-set-content news (match-string 1))
	  (mixi-realization-error 'cannot-find-content news))))
    (mixi-object-touch news)))

(defun mixi-news-media-id (news)
  "Return the media-id of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (aref (cdr news) 1))

(defun mixi-news-id (news)
  "Return the id of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (aref (cdr news) 2))

(defun mixi-news-media (news)
  "Return the media of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (unless (aref (cdr news) 3)
    (mixi-realize-news news))
  (aref (cdr news) 3))

(defun mixi-news-time (news)
  "Return the time of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (unless (aref (cdr news) 4)
    (mixi-realize-news news))
  (aref (cdr news) 4))

(defun mixi-news-title (news)
  "Return the title of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (unless (aref (cdr news) 5)
    (mixi-realize-news news))
  (aref (cdr news) 5))

(defun mixi-news-content (news)
  "Return the content of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (mixi-realize-news news)
  (aref (cdr news) 6))

(defun mixi-news-set-media (news media)
  "Set the media of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (aset (cdr news) 3 media))

(defun mixi-news-set-time (news time)
  "Set the time of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (aset (cdr news) 4 time))

(defun mixi-news-set-title (news title)
  "Set the title of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (aset (cdr news) 5 title))

(defun mixi-news-set-content (news content)
  "Set the content of NEWS."
  (unless (mixi-news-p news)
    (signal 'wrong-type-argument (list 'mixi-news-p news)))
  (aset (cdr news) 6 content))

(defconst mixi-news-category-list '(domestic politics economy area abroad
					     sports entertainment IT))

(defmacro mixi-news-category-p (category)
  `(memq ,category mixi-news-category-list))

(defun mixi-news-category-id (category)
  "Return the id of CATEGORY."
  (unless (mixi-news-category-p category)
    (signal 'wrong-type-argument (list 'mixi-news-category-p category)))
  (number-to-string
   (1+ (- (length mixi-news-category-list)
	  (length (memq category mixi-news-category-list))))))

(defconst mixi-news-sort-list '(newest pickup))

(defmacro mixi-news-sort-p (sort)
  `(memq ,sort mixi-news-sort-list))

(defun mixi-news-sort-id (sort)
  "Return the id of SORT."
  (unless (mixi-news-sort-p sort)
    (signal 'wrong-type-argument (list 'mixi-news-sort-p sort)))
  (number-to-string
   (- (length mixi-news-sort-list)
      (length (memq sort mixi-news-sort-list)))))

(defmacro mixi-news-list-page (category sort)
  `(concat "http://news.mixi.jp/list_news_category.pl?page=%d"
	   "&sort=" (mixi-news-sort-id ,sort)
	   "&id=" (mixi-news-category-id ,category)
	   "&type=bn"))

(defconst mixi-news-list-regexp
  "<tr bgcolor=\"\\(#FCF5EB\\|#FFFFFF\\)\">
<td WIDTH=\"1%\" valign=top CLASS=\"h120\">・</td>
<td WIDTH=\"97%\" CLASS=\"h120\"><A HREF=\"view_news\\.pl\\?id=\\([0-9]+\\)&media_id=\\([0-9]+\\)\"class=\"new_link\">\\(.+\\)</A>
\\(<IMG SRC=\"http://img\\.mixi\\.jp/img/news_camera3\\.gif\" WIDTH=\"11\" HEIGHT=\"12\">\\|\\)

</td>
<td WIDTH=\"1%\" nowrap CLASS=\"f08\"><A HREF=\"list_news_media\\.pl\\?id=[0-9]+\">\\(.+\\)</A></td>
<td WIDTH=\"1%\" nowrap CLASS=\"f08\">\\([0-9]+\\)月\\([0-9]+\\)日 \\([0-9]+\\):\\([0-9]+\\)</td></tr>")

;;;###autoload
(defun mixi-get-news (category sort &optional range)
  "Get news of CATEGORY and SORT."
  (unless (mixi-news-category-p category)
    (signal 'wrong-type-argument (list 'mixi-news-category-p category)))
  (unless (mixi-news-sort-p sort)
    (signal 'wrong-type-argument (list 'mixi-news-sort-p sort)))
  (let ((items (mixi-get-matched-items (mixi-news-list-page category sort)
				       mixi-news-list-regexp
				       range))
	(year (nth 5 (decode-time (current-time))))
	(month (nth 4 (decode-time (current-time)))))
    (mapcar (lambda (item)
	      (let ((month-of-item (string-to-number (nth 6 item))))
		(when (> month-of-item month)
		  (decf year))
		(setq month month-of-item)
		(mixi-make-news (nth 2 item) (nth 1 item) (nth 5 item)
				(encode-time
				 0 (string-to-number (nth 9 item))
				 (string-to-number (nth 8 item))
				 (string-to-number (nth 7 item))
				 month year)
				(nth 3 item))))
	    items)))

(provide 'mixi)

;;; mixi.el ends here