# test_bgm_jukebox_parity.gd —— 40250 客户端 BGM 点唱机与地图音乐配置回归测试
extends SceneTree

const SystemClass = preload("res://bgm_jukebox_system.gd")

var _passed: int = 0
var _failed: int = 0

func _assert(cond: bool, msg: String) -> void:
	if cond:
		_passed += 1
		print("  [PASS] %s" % msg)
	else:
		_failed += 1
		printerr("  [FAIL] %s" % msg)

func _init() -> void:
	print("\n=== Running test_bgm_jukebox_parity (Batch 28 Direction 4) ===")
	_test_playback_controls()
	_test_volume_clamping()
	_test_map_default_transitions()
	_test_custom_jukebox_overrides()

	print("\n=== Result: %d Passed, %d Failed ===" % [_passed, _failed])
	if _failed == 0:
		print("ALL TESTS PASSED!\n")
	else:
		printerr("SOME TESTS FAILED!\n")
	quit(0 if _failed == 0 else 1)

func _test_playback_controls() -> void:
	print("\n--- Test 1: BGM Playback Controls & Track Registry ---")
	var juke = SystemClass.new()

	# 1. Play canonical track
	var p_ok = juke.play_bgm("open_the_gate.mp3", true)
	_assert(p_ok == true, "Play canonical track open_the_gate.mp3")
	_assert(juke.is_playing == true, "Player is playing")
	_assert(juke.current_track == "open_the_gate.mp3", "Current track matches")
	_assert(juke.loop_enabled == true, "Loop is enabled")

	# 2. Reject non-canonical track
	var p_fail = juke.play_bgm("unknown_external_audio.mp3")
	_assert(p_fail == false, "Reject unregistered track")

	# 3. Stop playback
	juke.stop_bgm()
	_assert(juke.is_playing == false, "Playback stopped")
	_assert(juke.current_track == "", "Current track cleared")

func _test_volume_clamping() -> void:
	print("\n--- Test 2: Volume Range Clamping (0.0 to 1.0) ---")
	var juke = SystemClass.new()

	juke.set_volume(-0.5)
	_assert(juke.volume == 0.0, "Volume clamped at 0.0")

	juke.set_volume(1.8)
	_assert(juke.volume == 1.0, "Volume clamped at 1.0")

	juke.set_volume(0.65)
	_assert(is_equal_approx(juke.volume, 0.65), "Volume set to 0.65 (65%)")

func _test_map_default_transitions() -> void:
	print("\n--- Test 3: Map Default BGM Transitions ---")
	var juke = SystemClass.new()

	# Enter Login Screen -> enter_the_east.mp3
	var t_login = juke.on_enter_map("intro_login")
	_assert(t_login == "enter_the_east.mp3", "Login screen plays enter_the_east.mp3")
	_assert(juke.current_track == "enter_the_east.mp3", "Current track updated to login theme")

	# Enter Yongbi Desert -> desert.mp3
	var t_desert = juke.on_enter_map("metin2_map_n_desert_01")
	_assert(t_desert == "desert.mp3", "Desert map plays desert.mp3")
	_assert(juke.current_track == "desert.mp3", "Current track updated to desert")

func _test_custom_jukebox_overrides() -> void:
	print("\n--- Test 4: Jukebox Custom Map Overrides & Restoration ---")
	var juke = SystemClass.new()

	# Default for a1 is open_the_gate.mp3
	_assert(juke.get_effective_map_bgm("metin2_map_a1") == "open_the_gate.mp3", "Default a1 track is open_the_gate.mp3")

	# Custom override: change a1 to save_the_world.mp3
	var o_ok = juke.set_custom_map_bgm("metin2_map_a1", "save_the_world.mp3")
	_assert(o_ok == true, "Overrode a1 BGM to save_the_world.mp3")
	_assert(juke.get_effective_map_bgm("metin2_map_a1") == "save_the_world.mp3", "Effective BGM is now custom track")

	# Reset override
	juke.reset_custom_map_bgm("metin2_map_a1")
	_assert(juke.get_effective_map_bgm("metin2_map_a1") == "open_the_gate.mp3", "Restored to default track on reset")