extends SceneTree

var checks: int = 0
var failures: int = 0


func _initialize() -> void:
    call_deferred("run")


func check(condition: bool, message: String) -> void:
    checks += 1
    if not condition:
        failures += 1
        push_error(message)


func run() -> void:
    var player := OwniverseMusicPlayer.new()
    root.add_child(player)
    await process_frame

    check(player.last_track == "", "Music player starts with silence")
    check(player._pause_timer.time_left >= player.MIN_PAUSE_SECONDS and player._pause_timer.time_left <= player.MAX_PAUSE_SECONDS, "Initial pause is between two and five minutes")
    player._pause_timer.stop()
    player._play_next()
    check(player.last_track != "", "Music player selects an initial track")
    check(player.last_track != player.EXCLUDED_TRACK, "Normal playlist excludes apocalypse")
    var previous: String = player.last_track
    player._play_next()
    check(player.last_track != previous, "Consecutive tracks do not repeat")
    check(player.last_track != player.EXCLUDED_TRACK, "Subsequent tracks exclude apocalypse")

    var last_normal_track: String = player.last_track
    player.play_apocalypse()
    check(player.stream == player._music[player.EXCLUDED_TRACK] and player.playing, "Apocalypse music starts immediately")
    check(player.last_track == last_normal_track, "Apocalypse does not replace the last normal track")

    player._schedule_pause()
    check(player._pause_timer.time_left >= player.MIN_PAUSE_SECONDS and player._pause_timer.time_left <= player.MAX_PAUSE_SECONDS, "Pause is between two and five minutes")
    player.set_enabled(false)
    check(player.stream_paused and player._pause_timer.paused, "Disabling music pauses playback and scheduling")
    var disabled_stream: AudioStream = player.stream
    player.play_apocalypse()
    check(player.stream == disabled_stream, "Apocalypse does not start while music is disabled")
    player.set_enabled(true)
    check(not player.stream_paused and not player._pause_timer.paused, "Enabling music resumes playback and scheduling")

    player.stop()
    player.stream = null
    player.free()
    await process_frame
    print("Music player: %d checks, %d failures" % [checks, failures])
    quit(0 if failures == 0 else 1)