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telega-core.el
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;;; telega-core.el --- Core functionality for telega -*- lexical-binding:t -*-
;; Copyright (C) 2018-2019 by Zajcev Evgeny.
;; Author: Zajcev Evgeny <zevlg@yandex.ru>
;; Created: Mon Apr 23 18:09:01 2018
;; Keywords:
;; telega 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.
;; telega 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 telega. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Variables, macroses, defsubst and runtime goodies for telega
;;; Code:
(require 'cl-lib)
(require 'subr-x)
(require 'ring)
(require 'cursor-sensor)
(require 'telega-customize)
(declare-function telega-chat--info "telega-chat" (chat))
(declare-function telega-window-recenter "telega-util" (win &optional nlines from-point))
(declare-function telega-emoji-create-svg "telega-util" (emoji &optional c-height))
(declare-function telega-chats-compare "telega-sort" (criteria chat1 chat2))
(defvar telega--lib-directory nil
"The directory from where this library was first loaded.")
(defconst telega-chat-types
'(private secret basicgroup supergroup bot channel)
"All types of chats supported by telega.")
(defconst telega-msg-id-step 1048576 ; 2^20
"Message id difference between two consequent messages.")
(defconst telega-mute-for-ever 500000000)
(defconst telega-mute-for-intervals
;; 1h 4h 1d 7d forever
`(3600 14400 86400 604800 ,telega-mute-for-ever))
(defconst telega--slow-mode-delays '(0 10 30 60 300 900 3600)
"List of allowed slow mode delays.")
(defconst telega-chat--chat-permisions
'((:can_send_messages . "lng_rights_chat_send_text")
(:can_send_media_messages . "lng_rights_chat_send_media")
(:can_send_polls . "lng_rights_chat_send_polls")
(:can_send_other_messages . "lng_rights_chat_send_stickers")
(:can_add_web_page_previews . "lng_rights_chat_send_links")
(:can_change_info . "lng_rights_group_info")
(:can_invite_users . "lng_rights_chat_add_members")
(:can_pin_messages . "lng_rights_group_pin")))
(defconst telega-chat--admin-permissions
'((:can_be_edited . "lng_rights_edit_admin")
(:can_manage_chat . nil) ;TODO
(:can_change_info . "lng_rights_group_info")
(:can_post_messages . "lng_rights_channel_post")
(:can_edit_messages . "lng_rights_channel_edit")
(:can_delete_messages . "lng_rights_group_delete")
(:can_invite_users . "lng_rights_group_invite_link")
(:can_restrict_members . "telega_rights_restrict_members")
(:can_pin_messages . "lng_rights_group_pin")
(:can_promote_members . "telega_rights_promote_members")
(:can_manage_video_chats . "lng_rights_group_manage_calls")
(:is_anonymous . "lng_rights_group_anonymous")))
(defconst telega-notification-scope-types
'((private . "notificationSettingsScopePrivateChats")
(group . "notificationSettingsScopeGroupChats")
(channel . "notificationSettingsScopeChannelChats"))
"Map of lisp name of the scope to TDLib scope type name.")
(defconst telega-currency-symbols-alist
'(("EUR" . "€")
("USD" . "$")
("RUB" . "₽"))
"Alist of currency symbols.")
(defconst telega-emoji-animated-fullscreen-list
'("🎆" "🎉" "🎈" "👍" "💩" "❤" "👻" "👎" "🤮" "😂" "💸" "🎃" "🍆")
"List of animated emojis with fullscreen support.")
;;; Runtime variables
(defvar telega--current-buffer nil
"Buffer currently inserting into.
Bind this to make `telega-chars-xxx' family functions to work correctly.
Becase `telega-ins--as-string' uses temporary buffer.")
(defvar telega-msg-contains-unread-mention nil
"Bind this variable when displaying message containing unread mention.")
(defvar telega--chat nil
"Telega chat for the current buffer.
Used in some buffers to refer chat.")
(make-variable-buffer-local 'telega--chat)
(defvar telega--help-win-param nil
"Parameter for the `telega--help-win-redisplay-func'.
Used in help buffers to store some additional data.")
(make-variable-buffer-local 'telega--help-win-param)
(defvar telega--help-win-inserter nil
"Inserter function for the help win.
This function accepts exactly one argument - `telega--help-win-param'.")
(make-variable-buffer-local 'telega--help-win-inserter)
(defvar telega--help-win-dirty-p nil
"Non-nil if help win need redisplay.
Used for optimisations.")
(make-variable-buffer-local 'telega--help-win-dirty-p)
(defvar telega--me-id nil "User id of myself.")
(defvar telega--replies-id nil "Id of the \"Replies\" chat.")
(defvar telega--options nil "Options updated from telega-server.")
(defvar telega--auth-state nil
"Current Authorization state.")
(defvar telega--conn-state nil
"Current connection state.")
(defvar telega--status "Not Started" "Status of the connection to telegram.")
(defvar telega--status-aux
"Aux status used for long requests, such as fetching chats/searching/etc")
(defvar telega--chats nil "Hash table (id -> chat) for all chats.")
(defvar telega--cached-messages nil
"Hash table ((chat-id . msg-id) -> msg) of cached messages.
Such as pinned, replies, etc.")
(defvar telega--actions nil "Hash table (chat-id -> alist-of-user-actions).")
(defvar telega--ordered-chats nil "Ordered list of all chats.")
(defvar telega--filtered-chats nil
"Chats filtered by currently active filters.
Used to calculate numbers displayed in custom filter buttons.")
(defvar telega-deleted-chats nil
"List of recently deleted chats.
Used for \"Recently Deleted Chats\" rootview.")
(defvar telega--blocked-user-ids (list 0)
"List of IDs for blocked users.
Used to avoid fetching user's full-info to find out that user is blocked.
CAR of the list is current offset for `telega--getBlockedMessageSenders'.")
(defvar telega--dirty-chats nil
"List of chats that need to be updated with `telega-chat--update'.
Dirtiness types are stored in the `:telega-dirtiness' chat's property.")
(defvar telega--filters nil "List of active filters.")
(defvar telega--undo-filters nil "List of undo entries.")
(defvar telega--sort-criteria nil "Active sorting criteria list.")
(defvar telega--sort-inverted nil "Non-nil if sorting is inverted.")
(defvar telega--sort-reorder-dirtiness nil
"List of event types affecting chat order for Active sorting criteria.")
(defvar telega--info nil "Alist of (TYPE . INFO-TABLE).")
(defvar telega--full-info nil "Alist of (TYPE . FULL-INFO-TABLE).")
(defvar telega--top-chats nil
"Alist of (CATEGORY LAST-UPDATE-TIME ..)
CATEGORY is one of `Users', `Bots', `Groups', `Channels',
`InlineBots', `Calls'")
(defvar telega--last-buffer nil
"Used to track buffers switching.
So we can run the code when switching from chat buffer.")
(defvar telega--stickersets nil
"Alist of seen sticker sets.
ID -> sticker set.
Take into account that ID is the string.")
(defvar telega--stickersets-installed-ids nil
"List of ids for installed sticker sets.
Used by `telega-stickerset-installed-p'.")
(defvar telega--stickersets-installed nil
"List of `stickerSetInfo' for installed sticker sets.")
(defvar telega--stickersets-trending nil
"List of trending sticker sets info.")
(defvar telega--stickersets-trending-premium nil
"List of trending Premium sticker sets info.")
(defvar telega--stickersets-system nil
"List of system sticker sets, such as animated dices, animated emojis.")
(defvar telega--stickers-favorite nil
"List of favorite stickers.")
(defvar telega--stickers-recent nil
"List of recently used stickers.")
(defvar telega--stickers-recent-attached nil
"List of recently attached stickers.")
(defvar telega--animated-emojis nil
"List of all supported animated emojis.")
(defvar telega--animated-emojis-stickerset-id nil
"Id for sticker set with animated emojis.")
(defvar telega--animations-saved nil
"List of saved animations.")
(defvar telega--chat-themes nil
"List of chat themes.")
(defvar telega--dice-emojis nil
"List of supported emojis for random dice messages.")
(defvar telega--suggested-actions nil
"List of suggested actions to be taken.")
(defvar telega--group-calls nil "Hash table (id -> group-call).")
;; Searching
(defvar telega-search-history nil
"List of recent search queries.")
(defvar telega--search-chats nil
"Result of last `telega--searchChats' or `telega--searchChatsOnServer'.")
(defvar telega--nearby-chats nil
"List of nearby chats returned from `telega--searchChatsNearby'.")
(defvar telega--unread-message-count nil
"Plist with counts for unread/unmuted messages.
Props are `:unread_count' and `:unread_unmuted_count'")
(defvar telega--unread-chat-count nil
"Plist with counts for unread/unmuted chats.
Props are `:unread_count', `:unread_unmuted_count', `:marked_as_unread_count'
and `:marked_as_unread_unmuted_count'")
(defvar telega--chat-buffers-alist nil
"Alist of chats and corresponding chatbuf.")
(defun telega-chat-buffers ()
"Return list of all chatbufs."
(mapcar #'cdr telega--chat-buffers-alist))
(defvar telega--files nil
"Files hash FILE-ID -> (list FILE UPDATE-CALBACKS..).")
(defvar telega--files-updates nil
"Hash of FILE-ID -> (list-of (UPDATE-CB CB-ARGS))
UPDATE-CB is callback to call when file updates.
UPDATE-CB is called with FILE and CB-ARGS as arguments.
UPDATE-CB should return non-nil to be removed after its being called.")
(defvar telega--proxy-pings nil
"Alist for the proxy pings.
In form (PROXY-ID . TIMESTAMP SECONDS)")
(defvar telega-voip--alist nil
"Alist of all calls currently in processing.
In form (ID . CALL)")
(defvar telega-voip--active-call nil
"Currently active call.
Active call is either outgoing call or accepted incoming call.
Only one call can be currently active.")
(defvar telega--scope-notification-alist (cons nil nil)
"Default notification settings for chats.
alist where key is one of:
\"notificationSettingsScopePrivateChats\",
\"notificationSettingsScopeGroupChats\",
\"notificationSettingsScopeChannelChats\".")
(defvar telega-tdlib--chat-filters nil
"List of chat filters received from TDLib.")
(defvar telega-tdlib--chat-list nil
"Active tdlib chat list used for ordering.")
(defvar telega-tdlib--unix-time nil
"Plist holding remote/local unix times.
Used for adjustments for timing info received from Telegram.")
;; Minibuffer stuff used by chatbuf and stickers
(defvar telega-minibuffer--choices nil
"Bind to list of choices.
Each element in form: (NAME SSET-ID)")
(defvar telega-minibuffer--chat nil
"Bind to chat currently active.")
(defvar telega-minibuffer--string nil
"Bind to Saved string entered to minibuffer.")
(defvar telega--ignored-messages-ring (make-ring 0)
"Ring of ignored messages.
Use \\[execute-extended-command] telega-ignored-messages RET to
display the list.")
(defvar telega-docker--container-id nil
"Docker image id currently running.")
;; See https://github.com/tdlib/td/issues/1645
(defvar telega--relogin-with-phone-number nil
"This var is used to relogin with phone number when skipping QR auth")
(defvar telega--recent-inline-bots nil
"List of usernames for recently used inline bots.")
;;; Shared chat buffer local variables
(defvar telega-chatbuf--chat nil
"Telega chat for the current chat buffer.")
(make-variable-buffer-local 'telega-chatbuf--chat)
(defun telega-chatbuf--chat (buffer)
"Return chat corresponding chat BUFFER."
(buffer-local-value 'telega-chatbuf--chat buffer))
(defvar telega-chatbuf--marked-messages nil
"List of marked messages.")
(make-variable-buffer-local 'telega-chatbuf--marked-messages)
(defvar telega-chatbuf--marked-messages-1 nil
"List of previously marked messages.")
(make-variable-buffer-local 'telega-chatbuf--marked-messages-1)
(defvar telega-chatbuf--inline-query nil
"Non-nil if some inline bot has been requested.
Actual value is `:@extra` value of the call to inline bot.")
(make-variable-buffer-local 'telega-chatbuf--inline-query)
(defvar telega-chatbuf--input-marker nil)
(make-variable-buffer-local 'telega-chatbuf--input-marker)
(defvar telega-chatbuf--administrators nil
"List of administrators in chatbuf chat.
Asynchronously loaded when chatbuf is created.")
(make-variable-buffer-local 'telega-chatbuf--administrators)
(defvar telega-chatbuf--video-chat-hidden nil
"Non-nil if non-empty video chat is displayed in modeline instead of footer.")
(make-variable-buffer-local 'telega-chatbuf--video-chat-hidden)
(defvar telega-chatbuf--group-call-users nil
"List of group call participants.")
(make-variable-buffer-local 'telega-chatbuf--group-call-users)
(defvar telega-chatbuf--fetch-alist nil
"Alist of async requests (fetches) to the telega-server.
Could be used for fetching `admins', `pinned-messages', `reply-markup', etc.")
(make-variable-buffer-local 'telega-chatbuf--fetch-alist)
(defvar telega-chatbuf--bot-start-parameter nil
"Parameter to pass to `telega--sendBotStartMessage' when START is pressed.")
(make-variable-buffer-local 'telega-chatbuf--bot-start-parameter)
(defun telega--init-vars ()
"Initialize runtime variables.
Done when telega server is ready to receive queries."
(setq telega--auth-state nil)
(setq telega--conn-state nil)
(setq telega--status "Disconnected")
(setq telega--status-aux "")
(setq telega--me-id -1)
(setq telega--replies-id nil)
(setq telega--options
;; default limits
(list :message_caption_length_max 1024
:message_text_length_max 4096))
(setq telega--chats (make-hash-table :test #'eq))
(setq telega--cached-messages (make-hash-table :test #'equal))
(setq telega--top-chats nil)
(setq telega--search-chats nil)
(setq telega--nearby-chats nil)
(setq telega-deleted-chats nil)
(setq telega--blocked-user-ids (list 0))
(setq telega--ordered-chats nil)
(setq telega--filtered-chats nil)
(setq telega--dirty-chats nil)
(setq telega--actions (make-hash-table :test 'eq))
(setq telega--filters nil)
(setq telega--undo-filters nil)
(setq telega--sort-criteria nil)
(setq telega--sort-inverted nil)
(setq telega--sort-reorder-dirtiness nil)
(setq telega--info
(list (cons 'user (make-hash-table :test 'eq))
(cons 'secretChat (make-hash-table :test 'eq))
(cons 'basicGroup (make-hash-table :test 'eq))
(cons 'supergroup (make-hash-table :test 'eq))))
(setq telega--full-info
(list (cons 'user (make-hash-table :test 'eq))
(cons 'basicGroup (make-hash-table :test 'eq))
(cons 'supergroup (make-hash-table :test 'eq))))
(setq telega--ignored-messages-ring
(make-ring telega-ignored-messages-ring-size))
(setq telega--unread-message-count nil)
(setq telega--unread-chat-count nil)
(setq telega--files (make-hash-table :test 'eq))
(setq telega--files-updates (make-hash-table :test 'eq))
(setq telega-voip--alist nil)
(setq telega-voip--active-call nil)
(setq telega--proxy-pings nil)
(setq telega--scope-notification-alist nil)
(setq telega--stickersets nil)
(setq telega--stickersets-installed-ids nil)
(setq telega--stickersets-installed nil)
(setq telega--stickersets-trending nil)
(setq telega--stickersets-trending-premium nil)
(setq telega--stickersets-system nil)
(setq telega--stickers-favorite nil)
(setq telega--stickers-recent nil)
(setq telega--stickers-recent-attached nil)
(setq telega--animated-emojis nil)
(setq telega--animated-emojis-stickerset-id nil)
(setq telega--animations-saved nil)
(setq telega--chat-themes nil)
(setq telega--dice-emojis nil)
(setq telega-tdlib--chat-filters nil)
(setq telega-tdlib--chat-list nil)
(setq telega-tdlib--unix-time nil)
(setq telega--group-calls (make-hash-table :test 'eq))
(setq telega-docker--container-id nil)
(setq telega--recent-inline-bots nil)
)
(defun telega-test-env (&optional quiet-p)
"Test Emacs environment.
If QUIET-P is non-nil, then show success message in echo area.
Return non-nil if all tests are passed."
(interactive "P")
;; 62bits for numbers is required
;; i.e. ./configure --with-wide-int
(cl-assert (= most-positive-fixnum 2305843009213693951) nil
"Emacs with wide ints (--with-wide-int) is required")
(cl-assert (= (string-to-number "542353335") 542353335) nil
(concat "Emacs with `(string-to-number \"542353335\") ==> 542353335'"
" is required"))
;; at least 25.1 emacs is required
;; see https://t.me/emacs_telega/1592
(cl-assert (fboundp 'cursor-intangible-mode) nil
"Emacs with `cursor-intangible-mode' is required")
;; For now stick with at least 26.1 Emacs
(cl-assert (string-version-lessp "26.0" emacs-version) nil
(format "At least Emacs 26.0 is required, but you have %s"
emacs-version))
;; imagemagick for images NOT required, we have now fallback in case
;; native image transforms available (newer Emacs)
(cl-assert (or (image-type-available-p 'imagemagick)
(if (telega-x-frame)
(and (fboundp 'image-transforms-p)
(funcall 'image-transforms-p))
;; For TTY-only emacs, images are not required
t))
nil
(concat "Emacs with `imagemagick' support is required."
" (libmagickcore, libmagickwand, --with-imagemagick)"))
;; SVG is no longer required if avatars are disabled (in TTY for example)
(cl-assert (or (image-type-available-p 'svg)
(and (not telega-root-show-avatars)
(not telega-user-show-avatars)
(not telega-chat-show-avatars)))
nil
(concat "Emacs with `svg' support is needed to show avatars. "
"Disable `telega-XXX-show-avatars' or recompile Emacs with svg support"))
(unless quiet-p
(message "Your Emacs is suitable to run telega.el"))
t)
(defmacro telega-save-window-start (start end &rest body)
"Execute BODY saving window start and point.
Window start is saved only if window start is inbetween START and
END."
(declare (indent 2))
(let ((buf-win-sym (gensym))
(win-start (gensym "winstart"))
(win-start-line (gensym)))
`(let* ((,buf-win-sym (get-buffer-window))
(,win-start (when ,buf-win-sym
(window-start ,buf-win-sym)))
(,win-start-line (when (and ,buf-win-sym
(>= ,win-start ,start)
(<= ,win-start ,end))
(1+ (count-lines 1 ,win-start)))))
(unwind-protect
(progn ,@body)
(when (and ,buf-win-sym ,win-start-line)
(save-excursion
(goto-char (point-min))
(forward-line (1- ,win-start-line))
(set-window-start ,buf-win-sym (point) 'noforce)))))))
(defmacro telega-save-excursion (&rest body)
"Execute BODY saving current point as moving marker."
(declare (indent 0))
(let ((pnt-sym (gensym)))
`(let* ((,pnt-sym (copy-marker (point) t)))
(unwind-protect
(progn ,@body)
(goto-char ,pnt-sym)))))
(defmacro telega-save-cursor (&rest body)
"Execute BODY saving cursor's line and column position."
(declare (indent 0))
(let ((line-sym (gensym "line"))
(col-sym (gensym "col")))
`(let ((,line-sym (+ (if (bolp) 1 0) (count-lines 1 (point))))
(,col-sym (current-column)))
(unwind-protect
(progn ,@body)
(goto-char (point-min))
(cl-assert (> ,line-sym 0))
(forward-line (1- ,line-sym))
(move-to-column ,col-sym)))))
(defmacro with-telega-debug-buffer (&rest body)
"Execute BODY only if `telega-debug' is non-nil, making debug buffer current."
`(when telega-debug
(with-current-buffer (get-buffer-create "*telega-debug*")
(telega-save-excursion
,@body))))
(defmacro with-telega-root-buffer (&rest body)
"Execute BODY setting current buffer to root buffer.
Inhibits read-only flag."
(declare (indent 0))
`(when (buffer-live-p (telega-root--buffer))
(with-current-buffer telega-root-buffer-name
(let ((inhibit-read-only t))
(unwind-protect
(progn ,@body)
(set-buffer-modified-p nil))))))
(defmacro with-telega-chatbuf (chat &rest body)
"Execute BODY setting current buffer to chat buffer of CHAT.
Executes BODY only if chat buffer already exists.
If there is no corresponding buffer, then do nothing.
Inhibits read-only flag."
(declare (indent 1))
(let ((bufsym (cl-gensym "buf"))
(chatsym (cl-gensym "chat")))
`(let* ((,chatsym ,chat)
(,bufsym (if (and telega-chatbuf--chat
(eq telega-chatbuf--chat ,chatsym))
(current-buffer)
(cdr (assq ,chatsym telega--chat-buffers-alist)))))
(when (buffer-live-p ,bufsym)
(with-current-buffer ,bufsym
(let ((inhibit-read-only t)
(buffer-undo-list t))
,@body))))))
(defmacro with-telega-help-win (buffer-or-name &rest body)
"Execute BODY in help BUFFER-OR-NAME."
(declare (indent 1))
`(progn
(with-help-window ,buffer-or-name)
(redisplay)
(with-help-window ,buffer-or-name
(set-buffer standard-output)
(setq-local nobreak-char-display nil)
(cursor-sensor-mode 1)
,@body)))
(defun telega-help-win--maybe-redisplay (buffer-or-name for-param)
"Possible redisplay help win with BUFFER-OR-NAME.
If BUFFER-OR-NAME exists and visible then redisplay it."
(when-let ((help-buf (get-buffer buffer-or-name)))
(with-current-buffer help-buf
(when (and (eq for-param telega--help-win-param)
telega--help-win-inserter)
(if (get-buffer-window help-buf)
;; Buffer is visible in some HELP-WIN
(telega-save-window-start (point-min) (point-max)
(telega-save-cursor
(let ((inhibit-read-only t))
(setq telega--help-win-dirty-p nil)
(erase-buffer)
(funcall telega--help-win-inserter
telega--help-win-param))))
;; Buffer is not visible, mark it as dirty, so it will be
;; redisplayed when switched in
(setq telega--help-win-dirty-p t))))))
(defmacro telega-help-message (help-name fmt &rest fmt-args)
"Show once help message formatted with FMT and FMT-ARGS.
Show message only if `telega-help-messages' is non-nil."
(declare (indent 2))
`(when (and telega-help-messages
(not (get 'telega-help-messages ,help-name)))
(put 'telega-help-messages ,help-name t)
(message (concat "Telega: " ,fmt) ,@fmt-args)))
(defsubst telega-debug (fmt &rest args)
"Insert formatted string into debug buffer.
FMT and ARGS are passed directly to `format'."
(with-telega-debug-buffer
(goto-char (point-max))
(insert (apply 'format (cons (concat "%d: " fmt "\n")
(cons (telega-time-seconds) args))))))
(defmacro telega--tl-type (tl-obj)
`(intern (plist-get ,tl-obj :@type)))
(defmacro telega--tl-error-p (tl-obj)
"Return non-nil if TL-OBJ is error object."
`(eq (telega--tl-type ,tl-obj) 'error))
(defmacro telega--tl-get (obj prop1 &rest props)
"`plist-get' which works with multiple arguments.
For example:
`(telega--tl-get obj :prop1 :prop2)' is equivalent to
`(plist-get (plist-get obj :prop1) :prop2)`"
(let ((ret `(plist-get ,obj ,prop1)))
(dolist (prop props)
(setq ret (list 'plist-get ret prop)))
ret))
(defmacro telega--tl-prop (prop1 &rest props)
"Generate function to get property by PROP1 and PROPS.
Uses `telega--tl-get' to obtain the property."
(let ((tl-obj-sym (cl-gensym "tl-obj")))
`(lambda (,tl-obj-sym)
(telega--tl-get ,tl-obj-sym ,prop1 ,@props))))
(defmacro telega--tl-dolist (bind &rest body)
"Execute BODY by traversing plist.
BIND is in form ((PROP VAL) PLIST)."
(declare (indent 1))
`(cl-loop for ,(car bind) on ,(cadr bind)
by #'cddr
do (progn ,@body)))
(defsubst telega-file--size (file)
"Return FILE size."
;; NOTE: fsize is 0 if unknown, in this case esize is approximate
;; size
(let ((fsize (plist-get file :size))
(esize (plist-get file :expected_size)))
(if (zerop fsize) esize fsize)))
(defsubst telega-file--downloaded-p (file)
"Return non-nil if FILE has been downloaded."
(and (telega--tl-get file :local :is_downloading_completed)
(file-exists-p (telega--tl-get file :local :path))))
(defsubst telega-file--downloading-p (file)
"Return non-nil if FILE is downloading right now."
(telega--tl-get file :local :is_downloading_active))
(defsubst telega-file--can-download-p (file)
"Return non-nil if FILE can be downloaded.
May return nil even when `telega-file--downloaded-p' returns non-nil."
(telega--tl-get file :local :can_be_downloaded))
(defsubst telega-file--need-download-p (file)
(and (telega-file--can-download-p file)
(not (telega-file--downloaded-p file))))
(defsubst telega-file--downloaded-size (file)
(telega--tl-get file :local :downloaded_size))
(defsubst telega-file--downloading-progress (file)
"Return progress of FILE downloading as float from 0 to 1."
(let ((fsize (telega-file--size file)))
(if (zerop fsize)
0
(color-clamp (/ (float (telega-file--downloaded-size file)) fsize)))))
(defun telega-file--partially-downloaded-p (file)
"Return non-nil if FILE is partially downloaded."
(and (not (telega-file--downloading-p file))
(< 0 (telega-file--downloading-progress file) 1)))
(defsubst telega-file--uploaded-p (file)
"Return non-nil if FILE has been uploaded."
(telega--tl-get file :remote :is_uploading_completed))
(defsubst telega-file--uploading-p (file)
"Return non-nil if FILE is uploading right now."
(telega--tl-get file :remote :is_uploading_active))
(defsubst telega-file--uploading-progress (file)
"Return progress of FILE uploading as float from 0 to 1."
(color-clamp (/ (float (telega--tl-get file :remote :uploaded_size))
(telega-file--size file))))
(defun telega-file--partially-uploaded-p (file)
"Return non-nil if FILE is partially uploaded."
(and (not (telega-file--uploading-p file))
(< 0 (telega-file--uploading-progress file) 1)))
(defsubst telega--desurrogate-apply-part (part &optional keep-properties)
"Apply PART's `telega-display'"
(let ((part-display (get-text-property 0 'telega-display part)))
(cond (part-display
(if keep-properties
;; keep all properties except for `telega-display'
;; Apply `telega-emoji-p' property as well
(let* ((part-props0 (telega-plist-del
(text-properties-at 0 part) 'telega-display))
(emoji-p (plist-get part-props0 'telega-emoji-p))
(part-props1 (telega-plist-del part-props0 'telega-emoji-p))
;; NOTE: we always create new cell for 'display
;; property as in `image-insert', see comment
;; about this in `image-insert' sources
(addon-props (when (and emoji-p
telega-use-images
telega-emoji-use-images)
(list 'rear-nonsticky '(display)
'display (cons 'image (cdr (telega-emoji-create-svg part-display)))))))
(apply 'propertize part-display (nconc part-props1 addon-props)))
part-display))
(keep-properties part)
(t (substring-no-properties part)))))
(defsubst telega--desurrogate-apply-part-keep-properties (part)
(telega--desurrogate-apply-part part 'keep-props))
(defsubst telega--desurrogate-apply (str &optional no-properties)
"Apply `telega-display' properties to STR.
Resulting in new string with no surrogate pairs.
If NO-PROPERTIES is specified, then do not keep text properties."
(mapconcat (if no-properties
#'telega--desurrogate-apply-part
#'telega--desurrogate-apply-part-keep-properties)
(telega--split-by-text-prop str 'telega-display) ""))
(defsubst telega--tl-unpack (obj)
"Unpack TL object OBJ."
obj)
(defsubst telega--tl-pack (obj)
"Pack object OBJ."
;; Remove text props from strings, etc
(cond ((stringp obj) (substring-no-properties obj))
((vectorp obj) (cl-map 'vector #'telega--tl-pack obj))
((listp obj) (mapcar #'telega--tl-pack obj))
(t obj)))
(defun telega-tl-str (obj prop &optional no-properties)
"Get property PROP from OBJ, desurrogating resulting string.
NO-PROPERTIES is passed directly to `telega--desurrogate-apply'.
Return nil for empty strings.
Also supports \"formattedText\" a value of the OBJ's PROP."
(let* ((prop-val (plist-get obj prop))
(text (if (and (listp prop-val)
(equal (plist-get prop-val :@type) "formattedText"))
(telega--fmt-text-faces prop-val)
prop-val))
(ret (telega--desurrogate-apply text no-properties)))
(unless (string-empty-p ret)
ret)))
(defun telega--tl-json-object (tl-obj)
"Extract json object from from TL-OBJ object."
(cl-ecase (telega--tl-type tl-obj)
(jsonValueObject
;; json object as alist
(mapcar (lambda (obj)
(cl-assert (telega--tl-type obj) 'jsonObjectMember)
(cons (telega-tl-str obj :key)
(telega--tl-json-object (plist-get obj :value))))
(plist-get tl-obj :members)))
(jsonValueArray
(mapcar #'telega--tl-json-object (plist-get tl-obj :values)))
(jsonValueNumber
(plist-get tl-obj :value))
(jsonValueString
(telega-tl-str tl-obj :value))
(jsonValueBoolean
(plist-get tl-obj :value))
(jsonValueNull
nil)
))
(defsubst telega-zerop (value)
"Return non-nil if VALUE is nil or `zerop'."
(or (null value) (zerop value)))
(defsubst telega-replies-p (chat)
"Return non-nil if CHAT is Replies chat."
(eq telega--replies-id (plist-get chat :id)))
(defsubst telega-me-p (msg-sender)
"Return non-nil if MSG-SENDER is me.
MSG-SENDER could be a user or a chat."
(eq telega--me-id (plist-get msg-sender :id)))
(defsubst telega-chat-p (msg-sender)
"Return non-nil if CHAT is Telegram chat."
(and msg-sender (eq 'chat (telega--tl-type msg-sender))))
(defsubst telega-user-p (msg-sender)
"Return non-nil if USER is Telegram user."
(and msg-sender (eq 'user (telega--tl-type msg-sender))))
;; Matching
(defvar telega-temex-match-prefix nil)
(declare-function telega-match-p "telega-match" (object temex))
(defun telega-chat-match-p (chat temex)
"Return non-nil if CHAT matches TEMEX."
(declare (indent 1))
(let ((telega-temex-match-prefix "chat-"))
(telega-match-p chat temex)))
(defun telega-chatbuf-match-p (chat-temex)
"Return non-nil if chatbuf matches CHAT-TEMEX."
(cl-assert telega-chatbuf--chat)
(telega-chat-match-p telega-chatbuf--chat chat-temex))
(defun telega-user-match-p (user temex)
"Return non-nil if USER matches TEMEX."
(declare (indent 1))
(let ((telega-temex-match-prefix "user-"))
(telega-match-p user temex)))
(defun telega-msg-match-p (msg temex)
"Return non-nil if message MSG matches TEMEX."
(declare (indent 1))
(let ((telega-temex-match-prefix "msg-"))
(telega-match-p msg temex)))
(defun telega-sender-match-p (sender temex)
"Return non-nil if message SENDER matches TEMEX."
(declare (indent 1))
(let ((telega-temex-match-prefix "sender-"))
(telega-match-p sender temex)))
(defun telega-match-gen-predicate (prefix temex)
"Return predicate function to match TDLib object against TEMEX.
PREFIX is one of: \"msg-\", \"chat-\", \"user-\" or \"sender-\"."
(declare (indent 1))
(lambda (obj)
(let ((telega-temex-match-prefix prefix))
(telega-match-p obj temex))))
;;; Formatting
(defun telega-fmt-eval-fill (estr attrs)
"Fill ESTR to `:fill-column' value from ATTRS.
Keeps newlines in ESTR.
Return list of strings."
(let ((fill-column (- (or (plist-get attrs :fill-column) fill-column)
(length (plist-get attrs :fill-prefix)))))
(apply #'nconc
(mapcar (if (plist-get attrs :fill)
(lambda (str)
(split-string
(with-temp-buffer
(insert str)
(fill-region (point-min) (point-max)
(plist-get attrs :fill) t)
(buffer-substring (point-min) (point-max)))
"\n"))
#'list)
(split-string estr "\n")))))
(defun telega-fmt-eval-truncate (estr attrs)
"Apply `:max', `:elide-string' and `:elide-trail' properties from ATTRS to ESTR."
(let* ((max (plist-get attrs :max))
;; NOTE: always apply elide
; (elide (plist-get attrs :elide))
(elide-str (or (plist-get attrs :elide-string) telega-symbol-eliding))
(elide-trail (or (plist-get attrs :elide-trail) 0))
(estr-trail (if (> elide-trail 0) (substring estr (- elide-trail)) ""))
(estr-lead (truncate-string-to-width
estr (- max (string-width elide-str) elide-trail))))
(concat estr-lead elide-str estr-trail)))
;; result)
;; ;; Correct truncstr in case of multibyte chars
;; (while (and (not (string-empty-p estr-lead))
;; (< max (string-width
;; (setq result (concat estr-lead elide-str estr-trail)))))
;; (setq estr-lead (substring estr-lead 0 -1)))
;; result))
(defun telega-fmt-eval-align (estr attrs)
"Apply `:min', `:align' and `:align-symbol' properties from ATTRS to ESTR.
`:align-symbol' might be a symbol, in this case `telega-symbol' is
used to get a string for alignment."
(let* ((min (plist-get attrs :min))
(width (- min (string-width estr)))
(align (plist-get attrs :align))
(align-symbol (or (plist-get attrs :align-symbol) " "))
(left "")
(right ""))
;; Grow `left' and `right' until they have required width
(while (< (string-width left) (/ width 2))
(setq left (concat left (if (symbolp align-symbol)
(telega-symbol align-symbol)
align-symbol))))
(while (< (string-width right) (- width (/ width 2)))
(setq right (concat right (if (symbolp align-symbol)
(telega-symbol align-symbol)
align-symbol))))
(cl-ecase align
(left (concat estr left right))
(right (concat left right estr))
((center centre) (concat left estr right)))))
(defun telega-fmt-eval-min-max (estr attrs)
"Apply `:min' and `:max' properties from ATTRS to ESTR."
(let ((max (plist-get attrs :max))
(min (plist-get attrs :min))
(estr-width (string-width estr)))
(cond ((and max (> estr-width max))
(telega-fmt-eval-truncate estr attrs))
((and min (< estr-width min))
(telega-fmt-eval-align estr attrs))
(t estr))))
(defun telega-fmt-eval-face (estr attrs)
"Apply `:face' attribute from ATTRS to ESTR."
(let ((face (plist-get attrs :face)))
(when face
(add-face-text-property 0 (length estr) face t estr))
estr))
(defun telega-fmt-eval-attrs (estr attrs)
"Apply all attributes ATTRS to ESTR."
;; Blackmagic for fast execution, but
;; NOTE:
;; - Do not prefix first line
;; - Do not prefix empty lines with blank prefix
;; - If last string is empty, do not prefix it
(let* ((fpx (plist-get attrs :fill-prefix))
(fpx-blank-p (or (not fpx) (string-blank-p fpx)))
(filled-estrs (telega-fmt-eval-fill estr attrs))
(formatted-estrs (list (telega-fmt-eval-min-max
(pop filled-estrs) attrs)))
(festr-tail formatted-estrs))
(while filled-estrs
(let* ((estr (car filled-estrs))
(estr-last-p (not (cdr filled-estrs)))
(festr-elem
(list (telega-fmt-eval-min-max
(concat (unless (and (string-empty-p estr)
(or estr-last-p fpx-blank-p))
fpx)
estr)
attrs))))
(setcdr festr-tail festr-elem)
(setq festr-tail festr-elem)
(setq filled-estrs (cdr filled-estrs))))
(telega-fmt-eval-face
(mapconcat #'identity formatted-estrs "\n")
attrs)))
(defsubst telega-fmt-atom (atom)
"Convert ATOM to string.
NIL yields empty string for the convenience."
(cond ((stringp atom) atom)
((null atom) "")
(t (with-output-to-string
(princ atom)))))
(defun telega-fmt-eval-elem (elem value)
"Format single element ELEM with VALUE."
(let (attrs)
(when (and (not (functionp elem)) (listp elem))
(setq attrs (cdr elem)
elem (car elem)))
(telega-fmt-eval-attrs
(cond ((functionp elem)
(telega-fmt-atom (funcall elem value)))
((symbolp elem)
(telega-fmt-atom (symbol-value elem)))
((listp elem)
(telega-fmt-eval elem value))
(t (telega-fmt-atom elem)))
attrs)))
(defun telega-fmt-eval (fmt-spec value)
"Evaluate simple format FMT-SPEC, applying it to VALUE."
(when (functionp fmt-spec)
(setq fmt-spec (funcall fmt-spec value)))
(let ((fmt-result (if (stringp fmt-spec) fmt-spec "")))
(while (consp fmt-spec)
(when (car fmt-spec)
(setq fmt-result
(concat fmt-result
(telega-fmt-eval-elem (car fmt-spec) value))))
(setq fmt-spec (cdr fmt-spec)))
fmt-result))
(defsubst telega--time-at00 (timestamp &optional decoded-ts)
"Return time at 00:00:001 at TIMESTAMP's day.
Optional DECODED-TS is the result of already applied `decode-time'."
(let ((dt (or decoded-ts (decode-time timestamp))))
(1+ (- (floor timestamp) (* 3600 (nth 2 dt)) (* 60 (nth 1 dt)) (nth 0 dt)))))
;;; Buttons for telega
(defun telega-button--ins-error (_val)
"Default inserter for the `telega' button."
(error "Button `:inserter' is unset"))
;; Make 'telega-button be separate (from 'button) type
(put 'telega-button 'type 'telega)
(put 'telega-button 'keymap button-map)