#!/usr/bin/env bash
# Controls the player currently visible in eww widgets
# To control the correct player we need to find its instance name.
# We cannot just use the player name reported by `playerctl --follow` because
# there can be for example multiple mpv players, all reporting "mpv" as the
# player name, while their instance name could be something like
# "mpv.instance12345".
# Thus, instead:
# We can retrieve all player instance names with `playerctl --list-all` and
# filter by player name.
# Then we can use the media title shown in eww and compare it with the title of
# all matching players to find the correct player name instance.

eww_media_json="$(eww get media-json)"
current_name="$(jq -r .player_name <<< "$eww_media_json")"
all_matching="$(playerctl --list-all | grep "^${current_name}")"

# When comparing strings, remove all whitespace and ellipsis that was used to
# truncate the title in eww
current_title="$(jq -r .title <<< "$eww_media_json" | tr -d "[:space:]" | sed 's/\.\.\.$//')"
player_name=''
for match in $all_matching ; do
  actual_player_title="$(playerctl --player="$match" --format='{{title}}' metadata | tr -d "[:space:]")"
  if [[ "$actual_player_title" == *"$current_title"* ]]; then
    player_name="$match"
    break;
  fi
done

if [[ "$player_name" == '' ]]; then
  # If we could not find it, let playerctl handle it
  playerctl "$@"
else
  playerctl --player="$player_name" "$@"
fi