lqml/examples/meshtastic/lisp/messages.lisp
2024-06-08 18:26:08 +02:00

177 lines
6.1 KiB
Common Lisp

(in-package :msg)
(defvar *states* '(:not-received :sending :received))
(defvar *message-id* 0)
(defun ini ()
(q> |fontSize| ui:*message-view*
(or (app:setting :message-font-size) 18)))
(defun new-message-id ()
(mod (incf *message-id*) #.(expt 2 32)))
(let (message-ids)
;; associate (temporary) mesh message id to (unique) DB 'mid'
(defun add-message-id (ids)
(push ids message-ids))
(defun db-mid (id)
(cdr (assoc id message-ids))))
(defun show-message-p (message)
(let ((user (app:setting :latest-receiver)))
(and (not app:*background-mode*)
user
(or (string= user (getf message :receiver))
(string= user (getf message :sender))))))
(defun add-message (message &optional loading)
"Adds passed MESSAGE (a PLIST) to the QML item model and saves it to the DB.
The model keys are:
:receiver :sender :sender-name :timestamp :hour :text :mid :ack-state :me
:hidden"
(x:when-it (getf message (if (getf message :me) :receiver :sender))
(unless (or loading (getf message :me))
(let ((name (app:setting (getf message :sender) :custom-name)))
(when (and name (string/= "~" name))
(setf (getf message :sender-name) name))))
(unless loading
(let ((id (getf message :mid)))
(remf message :mid)
(let ((db-mid (db:save-message x:it (prin1-to-string message))))
(add-message-id (cons id db-mid))
(setf (getf message :mid) db-mid))))
(if (or loading (show-message-p message))
(qjs |addMessage| ui:*messages* message)
(let* ((sender (getf message :sender))
(unread (1+ (or (app:setting sender :unread-messages) 0))))
(unless (x:starts-with "<b>:e" (getf message :text)) ; 'echo' message
(app:change-setting sender unread :sub-key :unread-messages)
(group:set-unread sender unread))))
(unless loading
(q! |positionViewAtEnd| ui:*message-view*))))
(defun change-state (state id)
(let* ((i-state (position state *states*))
(db-mid (db-mid id))
(message (db:load-message db-mid)))
(when message
(setf message (read-from-string message))
(setf (getf message :ack-state) i-state)
(db:update-message db-mid (prin1-to-string message))
(qjs |changeState| ui:*messages*
i-state db-mid))))
(defun show-messages ()
(x:when-it (app:setting :latest-receiver)
(q! |clear| ui:*messages*)
(dolist (row (db:load-messages x:it))
(destructuring-bind (mid message) row
(setf message (read-from-string message)
(getf message :mid) mid)
(add-message message t)))
(dotimes (n 2) ; Qt bug
(q! |positionViewAtEnd| ui:*message-view*))))
(defun receiver-changed ()
(qsleep 0.1)
(q> |currentIndex| ui:*main-view* 1) ; 'Messages'
(show-messages))
(defun check-utf8-length (&optional (text (q< |text| ui:*edit*))) ; see QML
"Checks the actual number of bytes to send (e.g. a typical emoji is 4 utf8
bytes), because we can't exceed 234 bytes."
(let ((len (length (qto-utf8 text)))
(too-long (q< |tooLong| ui:*edit*)))
(cond ((and (not too-long)
(> len 234))
(q> |tooLong| ui:*edit* t))
((and too-long
(<= len 234))
(q> |tooLong| ui:*edit* nil))))
(values))
(defun message-press-and-hold (text) ; see QML
(set-clipboard-text text)
(app:toast (tr "message copied") 2)
(values))
(defun show-date (timestamp) ; see QML
(multiple-value-bind (sec min hour day month year)
(decode-universal-time timestamp)
(app:toast (format nil "~D-~2,'0D-~2,'0D ~2,'0D:~2,'0D:~2,'0D"
year month day hour min sec))))
(defun find-clicked ()
(let ((show (not (q< |visible| ui:*find-text*))))
(q> |visible| ui:*find-text* show)
(if show
(q! |forceActiveFocus| ui:*find-text*)
(progn
(q! |clear| ui:*find-text*)
(clear-find)))))
(defun find-text (text)
(unless (x:empty-string text)
(qjs |clearFind| ui:*messages*)
(qjs |find| ui:*messages* text)))
(defun clear-find ()
(qjs |clearFind| ui:*messages*)
(qlater (lambda () (qjs |positionViewAtEnd| ui:*message-view*))))
(defun highlight-term (text term) ; see QML
"Highlights TERM in red, returns NIL if TERM is not found."
(let ((len (length term))
found)
(with-output-to-string (s)
(do ((e (search term text :test 'string-equal)
(search term text :test 'string-equal :start2 (+ e len)))
(b 0 (+ e len)))
((not e) (if found
(write-string (subseq text b) s)
(return-from highlight-term)))
(setf found t)
(write-string (subseq text b e) s)
(format s "<font color='red'>~A</font>"
(subseq text e (+ e len)))))))
(defun echo-message (text from snr rssi)
"Meant for radio signal testing: one static node (with GPS module), while
another mobile node is moving to different places (using GPS of phone),
sending an ':e ...' text message, which will be echoed with info about signal
strength, position and distance."
(let ((from-pos (loc:position* from))
(my-pos #+mobile (nbutlast (loc:latest-gps-position) 1)
#-mobile nil))
(x:cc (format nil "~A~%~%snr: <b>~F</b> rssi: <b>~D</b>"
text snr rssi)
(if my-pos
(format nil "~%lat: ~,5F lon: ~,5F"
(first my-pos)
(second my-pos))
"")
(if (and my-pos from-pos)
(format nil "~%distance: <b>~:D m</b>"
(loc:distance my-pos from-pos))
""))))
(defun swipe-to-left () ; see QML
(q> |currentIndex| ui:*main-view* 0)
(values))
(defun font-size-dialog ()
(app:input-dialog
(tr "Message font size:") 'font-size-changed
:from 10.0
:to 48.0
:value (float (or (app:setting :message-font-size)
18.0))))
(defun font-size-changed (ok) ; see QML
(when ok
(let ((size (q< |value| ui:*dialog-spin-box*)))
(setf size (min 48 (max 10 size)))
(q> |fontSize| ui:*message-view* size)
(app:change-setting :message-font-size size)))
(values))