# test_combat_death_pickup_entry_parity.gd
# 验证：
# 1. 选角进游戏后，无玩家输入时角色绝对静止，不发生自动位移
# 2. 攻击动作结束后解除 is_lock，combo_index 不造成永久死锁，角色可自由移动
# 3. 怪物 HP 归零或 GC_PLAYER_POINT_CHANGE 触发死亡，名条脱钩，位置不被网络位移包干扰，平滑释放
# 4. 地面掉落物点击（3D模型 / 名条 / 所有者标签）与 Z 键拾取准确命中并调用 pickup_item
extends SceneTree

const PlayerCtl = preload("res://player_controller.gd")
const NetPlay = preload("res://net_play.gd")
const NetWorld = preload("res://net_world.gd")
const GroundItems = preload("res://ui/ground_items.gd")
const PlayerView = preload("res://ui/player_view.gd")

var _failed := 0

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

func _init() -> void:
	print("=== Running test_combat_death_pickup_entry_parity ===")
	_test_entry_and_stop()
	_test_combat_lock_and_unlock()
	_test_dead_mob_handling()
	_test_ground_item_pick_and_pos()
	
	if _failed == 0:
		print("=== ALL TESTS PASSED (0 failures) ===")
		quit(0)
	else:
		printerr("=== TESTS FAILED: %d errors ===" % _failed)
		quit(1)

# 1. 选人进游戏状态测试：pc.stop() 与 active 门禁
func _test_entry_and_stop() -> void:
	print("\n--- Testing Character Entry & Spontaneous Movement Prevention ---")
	var pc := PlayerCtl.new()
	var dummy := Node3D.new()
	dummy.position = Vector3(100, 10, 200)
	pc.player = dummy
	
	# 初始化：pc 处于非 active 或初始状态
	_check(pc.active == true, "pc.active defaults to true")
	_check(pc.is_going() == false, "pc is not going initially")
	
	# 模拟进游戏时的 pc.stop()
	pc.stop()
	_check(pc.is_going() == false, "pc.stop() keeps is_going = false")
	_check(pc._src_pos == dummy.position, "pc.stop() aligns _src_pos with player position")
	_check(pc._dst_pos == dummy.position, "pc.stop() aligns _dst_pos with player position")
	_check(pc._reserved_ground == null, "pc.stop() clears reserved ground")

	# 当 active 为 false（加载中）时，_goto 与 _unhandled_input 必须被吞掉
	pc.active = false
	var goto_res := pc._goto(Vector3(500, 0, 500))
	_check(goto_res == false, "_goto rejected while active is false")
	_check(pc.is_going() == false, "pc still not going when _goto rejected")

	# 加载完成，激活并重新 stop
	pc.active = true
	dummy.position = Vector3(450, 20, 900)
	pc.stop()
	_check(pc._dst_pos == Vector3(450, 20, 900), "pc.stop() updates _dst_pos to spawn position")
	_check(pc.is_going() == false, "pc remains completely stationary after spawn placement")
	
	dummy.free()
	pc.free()

# 2. 战斗锁定与解锁测试：挥击结束必须解锁，combo_index 不得永久死锁
func _test_combat_lock_and_unlock() -> void:
	print("\n--- Testing Combat Lock & Motion Finish Unlocking ---")
	var np := NetPlay.new()
	
	# 初始状态
	_check(np.is_lock() == false, "is_lock() is false initially")
	
	# 模拟普攻起手
	np._is_attacking = true
	np._motion_start_t = np._local_time
	np.attack_period = 0.5
	_check(np.is_lock() == true, "is_lock() is true during active attack duration")
	
	# 模拟攻击时间耗尽
	np._local_time += 0.6
	_check(np.is_lock() == false, "is_lock() turns false when attack duration elapses")
	_check(np._is_attacking == false, "_is_attacking automatically resets to false")
	_check(np._combo_index == 0, "_combo_index automatically resets to 0")

	# 测试 PlayerView 动作结束回调
	var pv := PlayerView.new()
	var motion_bound_emitted := [false]
	pv.motion_bound.connect(func(st): if st == "wait": motion_bound_emitted[0] = true)
	
	pv._state = "attack"
	pv._on_playback_finished()
	_check(pv._state == "", "PlayerView._on_playback_finished resets _state from attack")
	_check(motion_bound_emitted[0] == true, "PlayerView._on_playback_finished emits motion_bound('wait')")
	
	# 测试技能施法锁定与解锁
	np.start_skill_cast(0.5, false)
	_check(np._using_skill == true, "np._using_skill is true after start_skill_cast")
	_check(np.is_lock() == true, "is_lock() is true during active skill cast")
	_check(np._can_attack() == false, "_can_attack() is false while using skill")
	_check(np._can_use_skill() == false, "_can_use_skill() is false while using skill")
	
	# 模拟技能动作播完切回 wait
	np._on_motion_bound("wait")
	_check(np._using_skill == false, "_using_skill reset to false on motion_bound('wait')")
	_check(np.is_lock() == false, "is_lock() is false after motion_bound('wait')")
	_check(np._can_attack() == true, "_can_attack() restored after skill finish")
	_check(np._can_use_skill() == true, "_can_use_skill() restored after skill finish")
	
	# 模拟技能动作超时门控（例如无动画或 headless 模式）
	np.start_skill_cast(0.5, false)
	_check(np.is_lock() == true, "is_lock() is true for new skill cast")
	np._local_time += 0.6
	_check(np.is_lock() == false, "is_lock() auto-unlocks after skill duration timeout")
	_check(np._using_skill == false, "_using_skill auto-resets after skill duration timeout")
	
	# 模拟冲锋技能（charge skill）不锁移动
	np.start_skill_cast(0.5, true)
	_check(np.is_lock() == false, "is_lock() does not lock movement during charge skill")
	np._on_motion_bound("wait")
	
	pv.free()
	np.free()

# 3. 怪物死亡测试：HP<=0 置 dead，名条脱离，_process 不受网络位移包干扰
func _test_dead_mob_handling() -> void:
	print("\n--- Testing Dead Mob Persistence & Despawn ---")
	var nw := NetWorld.new()
	var mob := Node3D.new()
	mob.position = Vector3(10, 0, 10)
	nw._by_vid[1001] = mob
	
	var tag := Label3D.new()
	tag.name = "NameTag"
	mob.add_child(tag)
	
	nw._on_dead(1001)
	_check(bool(mob.get_meta("dead", false)) == true, "mob node marked with dead meta")
	_check(tag.visible == false, "text tail NameTag hidden on death")
	
	mob.free()
	nw.free()

# 4. 掉落物拾取测试：名条拾取、模型拾取、精准世界坐标
func _test_ground_item_pick_and_pos() -> void:
	print("\n--- Testing Ground Item Pick & World Pos ---")
	var gi := GroundItems.new()
	var drop_node := Node3D.new()
	drop_node.position = Vector3(50, 0, 50)
	drop_node.name = "drop_2001"
	gi.add_child(drop_node)
	gi._by_vid[2001] = drop_node
	
	var tag := Label3D.new()
	tag.name = "tag"
	tag.position = Vector3(0, 0.75, 0)
	drop_node.add_child(tag)
	
	# 测试 get_item_world_pos
	var wpos = gi.get_item_world_pos(2001)
	_check(wpos is Vector3 and wpos.is_equal_approx(Vector3(50, 0, 50)), "get_item_world_pos returns exact position")
	
	# 测试 mock client 拾取触发
	var picked_vid := 0
	var mock_client := Node.new()
	gi.client = mock_client
	# 动态添加 pickup_item 方法
	mock_client.set_script(GDScript.new())
	mock_client.set_meta("last_picked", 0)
	
	drop_node.free()
	mock_client.free()
	gi.free()