# skill_motion_loop_test —— 40250 SetMotionLoopCount / MSA LoopData parity。
#   godot --headless --path project --script skill_motion_loop_test.gd
extends SceneTree

const AssetRoot = preload("res://asset_root.gd")
const PlayerView = preload("res://ui/player_view.gd")

class FakeAnim extends Node:
	signal playback_finished
	var anim_path := ""
	var loop := true
	var time_scale := 1.0
	var playing := true
	var motion_loop_count := -1
	func set_motion_loop_count(count: int) -> void:
		motion_loop_count = count
	func get_motion_data() -> Dictionary:
		return {}

var _fail := 0

func _ck(ok: bool, message: String) -> void:
	if not ok:
		_fail += 1
		printerr("FAIL: " + message)

func _touch(path: String) -> void:
	DirAccess.make_dir_recursive_absolute(path.get_base_dir())
	var f := FileAccess.open(path, FileAccess.WRITE)
	f.store_string("")
	f.close()

func _init() -> void:
	call_deferred("_run")

func _run() -> void:
	await _test_player_view_payload()
	await _test_native_msa_segment_loop()
	if _fail == 0:
		print("PASS: skill_motion_loop_test")
		quit(0)
	else:
		printerr("%d check(s) failed" % _fail)
		quit(1)

func _test_player_view_payload() -> void:
	var root := ProjectSettings.globalize_path("user://skill_motion_loop_test")
	var skill_dir := root.path_join("PC/ymir work/pc/warrior/skill")
	_touch(skill_dir.path_join("loop_skill.msa"))
	var pv: Node = PlayerView.new()
	get_root().add_child(pv)
	var anim := FakeAnim.new()
	pv.add_child(anim)
	pv.anim = anim
	pv._assets_root = root
	pv._race = 0
	pv.motion_dir = root.path_join("PC/ymir work/pc/warrior/general")
	var played: bool = pv.play_skill_motion("loop_skill", 0, 3, true)
	_ck(played, "PlayerView accepts a skill motion from the resource directory")
	_ck(anim.motion_loop_count == 3, "PlayerView forwards uMotLoopCount to the animation player")
	_ck(pv.skill_motion_state() == {"loop_count": 3, "moving": true},
			"PlayerView keeps loop count and moving-skill bit together")
	pv.free()
	await process_frame

func _test_native_msa_segment_loop() -> void:
	if not ClassDB.class_exists("Metin2AnimPlayer"):
		print("  (skip native MSA loop test: animation extension unavailable)")
		return
	var assets := AssetRoot.path()
	var msa := assets.path_join("PC/ymir work/pc/assassin/skill/yeonsa.msa")
	if not FileAccess.file_exists(msa):
		print("  (skip native MSA loop test: yeonsa.msa unavailable)")
		return
	var anim: Node = ClassDB.instantiate("Metin2AnimPlayer")
	get_root().add_child(anim)
	if not anim.has_method("set_motion_loop_count") or not anim.has_method("get_motion_loop_count"):
		_ck(false, "Metin2AnimPlayer exposes SetMotionLoopCount")
		anim.free()
		await process_frame
		return
	anim.set("loop", false)
	anim.set("anim_path", msa)
	await process_frame
	var loop_data: Dictionary = anim.call("get_loop_data")
	_ck(bool(loop_data.get("present", false)), "MSA LoopData is exposed")
	_ck(int(loop_data.get("count", 0)) == 7, "yeonsa resource loop count is 7")
	anim.call("set_motion_loop_count", 2)
	_ck(int(anim.call("get_motion_loop_count")) == 2,
			"SetMotionLoopCount overrides the resource count")
	var previous: float = float(anim.call("get_time"))
	var wraps := 0
	var count_after_wrap := -1
	var finished := [false]
	anim.playback_finished.connect(func(): finished[0] = true)
	var frames := 0
	while frames < 500 and not finished[0]:
		await process_frame
		var current: float = float(anim.call("get_time"))
		if current + 0.05 < previous:
			wraps += 1
			count_after_wrap = int(anim.call("get_motion_loop_count"))
		previous = current
		frames += 1
	_ck(wraps == 1, "loop count 2 performs one LoopData segment rewind")
	_ck(count_after_wrap == 1, "segment rewind decrements the remaining count")
	_ck(finished[0], "finite MSA loop returns to playback_finished after the tail")
	anim.set("anim_path", assets.path_join("PC/ymir work/pc/warrior/general/wait.msa"))
	await process_frame
	_ck(int(anim.call("get_motion_loop_count")) == 0,
			"normal motion does not inherit the previous skill loop override")
	anim.free()
	await process_frame