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;;; jao-mpc.el --- Using mpc client -*- lexical-binding: t; -*-
;; Copyright (C) 2021 jao
;; Author: jao <mail@jao.io>
;; Keywords: convenience
;; Version: 0.1
;; Package-requires: ((emacs "27.1"))
;; URL: https://codeberg.org/jao/lib/media
;; 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 <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Simple mpd interaction using elmpd and mpc.
;;; Code:
(require 'jao-lyrics)
(require 'jao-random-album)
(defconst jao-mpc--albums "*MPC Albums*")
(defconst jao-mpc--playlist "*MPC Playlist*")
(defvar jao-mpc-port 6600)
(defvar-local jao-mpc--local-port nil)
(defun jao-mpc--cmd (cmd)
(shell-command-to-string (format "mpc -p %s %s"
(or jao-mpc--local-port jao-mpc-port)
cmd)))
(defconst jao-mpc--fields
'(artist album composer originaldate genre title track position time name))
(defconst jao-mpc--stfmt
(mapconcat (lambda (f) (format "%s:::%%%s%%" f f)) jao-mpc--fields "\n"))
(defun jao-mpc--current ()
(let ((s (jao-mpc--cmd (format "-f '%s' current" jao-mpc--stfmt)))
(res))
(dolist (s (split-string s "\n" t " ") res)
(when (string-match "\\(.+\\):::\\(.+\\)" s)
(push (cons (intern (match-string 1 s)) (match-string 2 s)) res)))))
(defun jao-mpc--current-str (&optional current len)
(let* ((current (or current (jao-mpc--current)))
(len (or len (jao-mpc--queue-len)))
(title (alist-get 'title current (alist-get 'name current "")))
(album (alist-get 'album current))
(artist (alist-get 'artist current))
(composer (alist-get 'composer current))
(no (string-to-number (alist-get 'track current "0")))
(time (alist-get 'time current "")))
(format " %s%s %s%s%s%s"
(jao--put-face (if (zerop no) "" (format "%02d/%s " no len))
'jao-themes-f02)
(jao--put-face title 'jao-themes-f00)
(jao--put-face artist 'jao-themes-f01)
(jao--put-face (if composer (format " [%s]" composer) "")
'jao-themes-f01)
(jao--put-face (if album (format " (%s)" album) "") 'jao-themes-f11)
(if (string-blank-p time)
""
(jao--put-face (format " [%s]" time) 'jao-themes-dimm)))))
(defvar jao-mpc-minibuffer-str "")
(defun jao-mpc--playing-p ()
(not (string-blank-p (jao-mpc--cmd "status|grep '\\[playing\\]'"))))
(defun jao-mpc--queue-len ()
(string-to-number (jao-mpc--cmd "playlist|wc -l")))
(defun jao-mpc--set-current-str (&optional _proc _str)
(setq jao-mpc-minibuffer-str
(if (jao-mpc--playing-p)
(jao-mpc--current-str)
(when (and jao-random-album-p (not (jao-mpc--current)))
(jao-random-album-next))
"")))
(defvar jao-mpc--idle-proc nil)
(defun jao-mpc--idle-loop ()
(when jao-mpc--idle-proc (kill-process jao-mpc--idle-proc))
(setq jao-mpc--idle-proc
(make-process :name "jao-mpc-idleloop"
:buffer "*jao-mpc-idleloop*"
:command '("mpc" "idleloop" "player")
:filter #'jao-mpc--set-current-str)))
(define-derived-mode jao-mpc-albums-mode fundamental-mode "MPC Albums"
"Mode to display the list of albums known by mpd."
(read-only-mode -1)
(delete-region (point-min) (point-max))
(insert (shell-command-to-string "mpc list album"))
(goto-char (point-min))
(read-only-mode 1))
(define-key jao-mpc-albums-mode-map (kbd "n") #'next-line)
(define-key jao-mpc-albums-mode-map (kbd "p") #'previous-line)
(define-key jao-mpc-albums-mode-map (kbd "RET") #'jao-mpc-add-and-play)
(define-key jao-mpc-albums-mode-map (kbd "q") #'bury-buffer)
(defun jao-mpc--album-buffer ()
(if-let (b (get-buffer jao-mpc--albums))
b
(with-current-buffer (get-buffer-create jao-mpc--albums)
(jao-mpc-albums-mode)
(current-buffer))))
(defun jao-mpc--add-and-play (&optional album)
(interactive)
(let ((album (or album (string-trim (thing-at-point 'line)))))
(jao-mpc--cmd "clear")
(jao-mpc--cmd (format "findadd album \"%s\"" album))
(jao-mpc--cmd "play")))
(define-derived-mode jao-mpc-playlist-mode fundamental-mode "MPC Playlist"
"Mode to display the list of playlist known by mpd."
(read-only-mode -1)
(delete-region (point-min) (point-max))
(setq-local jao-mpc--local-port jao-mpc-port)
(insert (jao-mpc--cmd "playlist"))
(goto-char (point-min))
(display-line-numbers-mode)
(read-only-mode 1))
(defun jao-mpc--playlist-goto-current ()
(interactive)
(let ((c (string-trim (or (jao-mpc--cmd "current") ""))))
(unless (string-blank-p c)
(goto-char (point-min))
(when (re-search-forward (regexp-quote c) nil t)
(beginning-of-line)))))
(defun jao-mpc--playlist-play ()
(interactive)
(jao-mpc--cmd (format "play %s" (line-number-at-pos))))
(define-key jao-mpc-playlist-mode-map (kbd "n") #'next-line)
(define-key jao-mpc-playlist-mode-map (kbd "p") #'previous-line)
(define-key jao-mpc-playlist-mode-map (kbd "q") #'bury-buffer)
(define-key jao-mpc-playlist-mode-map (kbd ".") #'jao-mpc--playlist-goto-current)
(define-key jao-mpc-playlist-mode-map (kbd "RET") #'jao-mpc--playlist-play)
(define-key jao-mpc-playlist-mode-map (kbd "C") #'jao-mpc-clear)
(defun jao-mpc--playlist-buffer ()
(with-current-buffer (get-buffer-create jao-mpc--playlist)
(jao-mpc-playlist-mode)
(current-buffer)))
;;;###autoload
(defun jao-mpc-stop ()
(interactive)
(jao-mpc--cmd "stop"))
;;;###autoload
(defun jao-mpc-toggle ()
(interactive)
(jao-mpc--cmd "toggle"))
;;;###autoload
(defun jao-mpc-play ()
(interactive)
(jao-mpc--cmd "play"))
;;;###autoload
(defun jao-mpc-next ()
(interactive)
(jao-mpc--cmd "next"))
;;;###autoload
(defun jao-mpc-previous ()
(interactive)
(jao-mpc--cmd "previous"))
;;;###autoload
(defun jao-mpc-seek (delta)
(interactive "nDelta: ")
(jao-mpc--cmd (format "seek %s%s" (if (> delta 0) "+" "") delta)))
;;;###autoload
(defun jao-mpc-clear ()
(interactive)
(jao-mpc--cmd "clear"))
;;;###autoload
(defun jao-mpc-echo-current ()
(interactive)
(jao-notify (jao-mpc--current-str)))
;;;###autoload
(defun jao-mpc-add-url (url)
(interactive "sURL: ")
(jao-mpc--cmd (format "add %s" url)))
;;;###autoload
(defun jao-mpc-show-albums ()
"Show album list."
(interactive)
(pop-to-buffer (jao-mpc--album-buffer)))
;;;###autoload
(defun jao-mpc-show-playlist ()
"Show current playlist."
(interactive)
(pop-to-buffer (jao-mpc--playlist-buffer))
(jao-mpc--playlist-goto-current))
;;;###autoload
(defun jao-mpc-lyrics-track-data ()
(let ((c (string-trim (jao-mpc--cmd "current"))))
(unless (string-blank-p c)
(when (string-match "\\(.\\) - \\(.+\\)" c)
(cons (match-string 2 c) (match-string 1 c))))))
;;;###autoload
(defun jao-mpc-setup ()
(setq jao-lyrics-info-function #'jao-mpc-lyrics-track-data)
(jao-random-album-setup #'jao-mpc--album-buffer
#'jao-mpc--add-and-play
#'jao-mpc-stop)
(jao-mpc--idle-loop)
(jao-minibuffer-add-msg-variable 'jao-mpc-minibuffer-str 1))
(provide 'jao-mpc)
;;; jao-mpc.el ends here
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