feat: basic playback functionality

src/sh/api.sh

@@ -4,6 +4,79 @@ USER_AGENT="$APP_NAME/$APP_VERSION ($APP_WEBSITE)"
 SLEEP_ON_ERROR=1
 export MB_BROWSE_STEPS
 
+__mpv_command() {
+  echo "mpv_command: $*" >>/tmp/foo
+  printf "{ \"command\": [\"%s\"] }\n" "$1" | $SOCAT - "$MPV_SOCKET"
+}
+
+__mpv_command_with_arg() {
+  echo "mpv_command_1: $*" >>/tmp/foo
+  printf "{ \"command\": [\"%s\", \"%s\"] }\n" "$1" "$2" | $SOCAT - "$MPV_SOCKET"
+}
+
+__mpv_command_with_args2() {
+  echo "mpv_command_2: $*" >>/tmp/foo
+  printf "{ \"command\": [\"%s\", \"%s\", \"%s\"] }\n" "$1" "$2" "$3" | $SOCAT - "$MPV_SOCKET"
+}
+
+__mpv_get() {
+  __mpv_command_with_arg "expand-text" "$2" | $JQ -r '.data'
+}
+
+mpv_playlist_count() {
+  __mpv_get '${playlist/count}'
+}
+
+mpv_playlist_position() {
+  __mpv_get '${playlist-pos}'
+}
+
+mpv_quit() {
+  __mpv_command "quit"
+}
+
+mpv_start() {
+  MPV_SOCKET="$(mktemp --suffix=.sock)"
+  trap 'mpv_quit; rm -f "$MPV_SOCKET"' EXIT INT
+  $MPV --no-config --no-terminal --input-ipc-server="$MPV_SOCKET" --idle --no-osc --no-input-default-bindings &
+}
+
+mpv_play_file() {
+  __mpv_command_with_arg "loadfile" "$1"
+}
+
+mpv_queue_file() {
+  __mpv_command_with_args2 "loadfile" "$1" "append-play"
+}
+
+mpv_play_list() {
+  __mpv_command_with_arg "loadlist" "$1"
+}
+
+mpv_queue_list() {
+  __mpv_command_with_arg "loadlist" "$1" "append-play"
+}
+
+mpv_next() {
+  __mpv_command "playlist-next"
+}
+
+mpv_prev() {
+  __mpv_command "playlist-prev"
+}
+
+mpv_seek_forward() {
+  __mpv_command_with_arg "seek" "10"
+}
+
+mpv_seek_backward() {
+  __mpv_command_with_arg "seek" "-10"
+}
+
+mpv_toggle_pause() {
+  __mpv_command_with_arg "cycle" "pause"
+}
+
 __api_mb() {
   tmpout=$(mktemp)
   for _ in $(seq "$MB_MAX_RETRIES"); do

src/sh/tools.sh

@@ -21,3 +21,19 @@ else
   exit 1
 fi
 export JQ
+
+if command -v "mpv" >/dev/null; then
+  MPV="mpv"
+else
+  err "Did not find mpv."
+  exit 1
+fi
+export MPV
+
+if command -v "socat" >/dev/null; then
+  SOCAT="socat"
+else
+  err "Did not find socat."
+  exit 1
+fi
+export SOCAT