impr: playlist readout

fuzique

@@ -29,9 +29,22 @@ if [ "${1:-}" = "--prompt" ]; then
 fi
 
 if [ "${1:-}" = "--preview" ]; then
-  echo "call to --preview" >>/tmp/foo
   shift
   file="$1"
+  [ ! -f "$file" ] && exit 0
+  rel=${file#"$ROOT/"}
+  artist=$(echo "$rel" | cut -d "/" -f 1)
+  release=$(echo "$rel" | cut -d "/" -f 2)
+  track=$(echo "$rel" | cut -d "/" -f 3)
+  if [ "$track" ]; then
+    echo "Tracka info..."
+    echo "$track"
+  elif [ "$release" ]; then
+    echo "Release info..."
+    echo "$release"
+  elif [ "$artist" ]; then
+    echo "Artist info..."
+  fi
   tags=$(ffprobe -v quiet -show_entries format -of json "$file" | jq)
   {
     echo "## Lyrics"
@@ -41,25 +54,49 @@ if [ "${1:-}" = "--preview" ]; then
   exit 0
 fi
 
+mpv_text() {
+  echo "{ \"command\": [\"expand-text\",\"$1\"] }" | socat - "$MPV_SOCKET" | jq -r '.data'
+}
+
+tags_from_file() {
+  ffprobe \
+    -v quiet \
+    -show_entries format \
+    -of json \
+    "$1" |
+    jq -r '.format.tags | [ [.artist, .ARTIST], [.album, .ALBUM], [.title, .TITLE] ] | map(map(select(. != null))) | map(.[0]) | join("|")'
+}
+
 if [ "${1:-}" = "--show-playlist" ]; then
-  [ ! -S "${MPV_SOCKET:-}" ] && exit 1
-  count=$(echo "{ \"command\": [\"expand-text\",\"\${playlist/count}\"] }" | socat - "$MPV_SOCKET" | jq -r '.data')
+  count=$(mpv_text '${playlist/count}')
   if [ "$count" -eq 0 ]; then
     printf "(empty playlist)\t\t%s\n" "$MODE_PLAYLIST"
     exit 0
   fi
+  pos=$(mpv_text '${playlist-pos}')
+  cmd=""
   for i in $(seq 0 $((count - 1))); do
-    file=$(echo "{ \"command\": [\"expand-text\",\"\${playlist/$i/filename}\"] }" | socat - "$MPV_SOCKET" | jq -r '.data')
-    curr=$(echo "{ \"command\": [\"expand-text\",\"\${playlist/$i/current}\"] }" | socat - "$MPV_SOCKET" | jq -r '.data')
-    pnt="  "
-    [ "$curr" = "yes" ] && pnt="$PLAYLIST_POINTER"
-    artist=$(echo "$file" | rev | cut -d "/" -f 3 | rev)
-    release=$(echo "$file" | rev | cut -d "/" -f 2 | rev)
-    title=$(echo "$file" | rev | cut -d "/" -f 1 | rev | sed 's/\..*$//')
+    cmd="$cmd\${playlist/$i/filename}|"
+  done
+  fn=$(mpv_text "$cmd")
+  for i in $(seq 0 $((count - 1))); do
+    f=$(echo "$fn" | cut -d "|" -f "$((i + 1))")
+    [ ! "$f" ] && continue
+    if [ -f "$f" ]; then
+      tags=$(tags_from_file "$f")
+      artist=$(echo "$tags" | cut -d "|" -f 1)
+      release=$(echo "$tags" | cut -d "|" -f 2)
+      track=$(echo "$tags" | cut -d "|" -f 3)
+    fi
+    rel=${f#"$ROOT/"}
+    [ "${artist:-}" ] || artist=$(echo "$rel" | cut -d "/" -f 1)
+    [ "${release:-}" ] || release=$(echo "$rel" | cut -d "/" -f 2)
+    [ "${track:-}" ] || track=$(echo "$rel" | cut -d "/" -f 3 | sed 's/\..*$//')
     artist=$(printf "$AFMT" "$artist")
     release=$(printf "$RFMT" "$release")
-    title=$(printf "$TFMT" "$title")
-    printf "%s|%s|%s|%s\t%s\t%s\n" "$pnt" "$title" "$release" "$artist" "$file" "$MODE_PLAYLIST"
+    track=$(printf "$TFMT" "$track")
+    [ "$i" -eq "$pos" ] && pnt="$PLAYLIST_POINTER" || pnt="  "
+    printf "%s|%s|%s|%s\t%s\t%s\n" "$pnt" "$track" "$release" "$artist" "$f" "$MODE_PLAYLIST"
   done |
     grep '.' |
     column -t -s '|'
@@ -79,7 +116,7 @@ CAT=${CAT:+$CAT --color=always --style=plain --language=md}
 CAT=${CAT:-cat}
 export CAT
 
-if [ "${1:-}" = "--help" ]; then
+if [ ! "${1:-}" ] || [ "${1:-}" = "--help" ]; then
   $CAT <<EOF
 Usage: \`$0 [ --help | [ MUSIC_DIRECTORY [ --reset-cache ] ] ]\`
 
@@ -117,7 +154,7 @@ EOF
 fi
 
 # Load configuration
-[ "${1:-}" ] && ROOT="$(realpath "$1")" && shift
+[ "${1:?"You did not specify the music directory. Run $0 --help."}" ] && ROOT="$(realpath "$1")" && shift
 ROOT=${ROOT%%/}
 [ ! -d "${ROOT:-}" ] && echo "Faild to recognize music directory. Run $0 --help." && exit 1
 DEPTH=$(echo "$ROOT" | awk -F'/' '{ print NF }')
@@ -216,13 +253,9 @@ $FZF \
   --bind="alt-3:reload:column -t -s '|' -E 0 \"$tracks_file_search\"" \
   --bind="ctrl-p:reload:$0 --show-playlist" \
   --bind="load:transform:
-    echo \"l2:{}\" >> /tmp/foo
     [ {3} = \"$MODE_SEARCH\" ] && printf \"+hide-preview\" || printf \"+show-preview\"
     [ {3} = \"$MODE_PLAYLIST\" ] && printf \"+hide-input\" || printf \"+show-input\"
-    echo \"l3:{}\" >> /tmp/foo
     printf \"+transform-prompt:$0 --prompt {2} {3}\"
-    echo \"l4:{}\" >> /tmp/foo
-    echo \"load ended..\" >> /tmp/foo
     " \
   --bind="ctrl-l:transform:
     printf \"clear-query+pos(1)\"