;; tinmop: a multiprotocol client
;; Copyright © cage

;; 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 3 of the License, 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, see [[http://www.gnu.org/licenses/][http://www.gnu.org/licenses/]].

(in-package :chats-list-window)

(defclass chats-list-window (focus-marked-window
                             simple-line-navigation-window
                             title-window
                             border-window)
  ())

(defmethod refresh-config :after ((object chats-list-window))
  (open-attach-window:refresh-view-links-window-config object
                                                       swconf:+key-chats-list-window+)
  (refresh-config-sizes object swconf:+key-thread-window+)
  (win-move object
            (- (win-width *main-window*)
               (win-width object))
            0)
  (win-move object
            (- (win-width *main-window*)
               (win-width object))
            0)
  object)

(defun chat->list-item (chat-db-row)
  (format nil
          (_ "~a ~a unread: ~a")
          (db:row-label chat-db-row)
          (db:user-id->username (db:row-account-id chat-db-row))
          (db:count-unread-chat-messages (db:row-id chat-db-row))))

(defun chat->text (chat-db-row &key (skip-ignored-user t))
  (with-output-to-string (stream)
    (let ((all-messages (db:all-chat-messages (db:row-id chat-db-row))))
      (dolist (message all-messages)
        (when (and skip-ignored-user
                   (not (db:user-ignored-p (db:row-account-id message))))
          (let* ((date-fmt               (or (swconf:date-fmt swconf:+key-chat-window+)
                                             (swconf:date-fmt swconf:+key-thread-window+)))
                 (created-date           (db:row-created-at message))
                 (encoded-created-date   (db-utils:encode-datetime-string created-date))
                 (formatted-created-date (format-time encoded-created-date date-fmt))
                 (attachment             (db:attachment-to-chat-message (db:row-id message)))
                 (attachment-type        (if attachment
                                             (format nil "~a attachment" (db:row-type attachment))
                                             ""))
                 (content                (or (db:row-message-content message)
                                             ""))
                 (username               (db:user-id->username (db:row-account-id message))))
            (format stream
                    (_ "~a ~a wrote:~%~a ~a~2%")
                    formatted-created-date
                    username
                    (html-utils:html->text content
                                           :quote-prefix (swconf:message-window-quote-prefix)
                                           :list-item-prefix (swconf:message-window-bullet-prefix))
                    attachment-type)))))))

(defmethod resync-rows-db ((object chats-list-window)
                           &key
                             (redraw t)
                             (suggested-message-index nil))
  (with-accessors ((rows             rows)
                   (selected-line-bg selected-line-bg)
                   (selected-line-fg selected-line-fg)) object
    (flet ((make-rows (chats bg fg)
             (mapcar (lambda (chat)
                       (make-instance 'line
                                      :normal-text   (chat->list-item chat)
                                      :selected-text (chat->list-item chat)
                                      :fields        chat
                                      :normal-bg     fg
                                      :normal-fg     bg
                                      :selected-bg   bg
                                      :selected-fg   fg))
                     chats)))
      (with-croatoan-window (croatoan-window object)
        (line-oriented-window:update-all-rows object
                                              (make-rows (db:all-chats)
                                                         selected-line-bg
                                                         selected-line-fg))
        (when suggested-message-index
          (select-row object suggested-message-index))
        (when redraw
          (draw object))))))

(defun open-chats-list-window ()
  (let* ((low-level-window (make-croatoan-window :enable-function-keys t)))
    (setf *chats-list-window*
          (make-instance 'chats-list-window
                         :top-row-padding   0
                         :title             (_ "Current chats")
                         :single-row-height 1
                         :uses-border-p     t
                         :keybindings       keybindings:*chats-list-keymap*
                         :croatoan-window   low-level-window))
    (refresh-config  *chats-list-window*)
    (resync-rows-db  *chats-list-window* :redraw nil)
    (when (not (line-oriented-window:rows-empty-p  *chats-list-window*))
      (select-row  *chats-list-window* 0))
    (draw  *chats-list-window*)
     *chats-list-window*))