# test_intro_empire_parity.gd —— 40250 三国地貌 3D 运镜与阵营选择回归测试
extends SceneTree

const SystemClass = preload("res://intro_empire_phase.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_intro_empire_parity (Batch 29 Direction 2) ===")
	_test_initial_empire_state()
	_test_camera_target_positions_and_switching()
	_test_camera_smooth_interpolation()
	_test_empire_description_and_confirmation()

	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_initial_empire_state() -> void:
	print("\n--- Test 1: Initial Empire & Camera Initialization ---")
	var emp = SystemClass.new(SystemClass.EMPIRE_SHINSOO)

	_assert(emp.selected_empire == SystemClass.EMPIRE_SHINSOO, "Initial empire is Shinsoo")
	var info = emp.get_selected_empire_info()
	_assert(info["capital"] == "Yongan", "Shinsoo capital is Yongan")
	_assert(emp.current_cam_pos == Vector3(100.0, 50.0, -200.0), "Initial camera pos matches preset")

func _test_camera_target_positions_and_switching() -> void:
	print("\n--- Test 2: Switching Empires & Camera Target Updates ---")
	var emp = SystemClass.new(SystemClass.EMPIRE_SHINSOO)

	# Switch to Chunjo (Yellow)
	var sw1 = emp.select_empire(SystemClass.EMPIRE_CHUNJO)
	_assert(sw1 == true, "Switched to Chunjo")
	_assert(emp.target_cam_pos == Vector3(-150.0, 60.0, -180.0), "Chunjo camera target pos set")
	_assert(emp.is_transitioning == true, "Camera transition activated")

	# Switch to Jinno (Blue)
	var sw2 = emp.select_empire(SystemClass.EMPIRE_JINNO)
	_assert(sw2 == true, "Switched to Jinno")
	_assert(emp.target_cam_pos == Vector3(0.0, 80.0, -250.0), "Jinno camera target pos set")

	# Reject invalid empire
	var sw_inv = emp.select_empire(99)
	_assert(sw_inv == false, "Reject invalid empire id 99")

func _test_camera_smooth_interpolation() -> void:
	print("\n--- Test 3: Smooth Camera Interpolation Flow ---")
	var emp = SystemClass.new(SystemClass.EMPIRE_SHINSOO)

	emp.select_empire(SystemClass.EMPIRE_JINNO)
	_assert(emp.is_transitioning == true, "Transitioning flag is true")

	# Halfway step (0.5)
	emp.update_camera_transition(0.5)
	_assert(emp.is_transitioning == true, "Still transitioning at 50%")
	_assert(emp.transition_t == 0.5, "transition_t is 0.5")

	# Complete transition (another 0.5)
	emp.update_camera_transition(0.5)
	_assert(emp.is_transitioning == false, "Transition completed")
	_assert(emp.current_cam_pos == Vector3(0.0, 80.0, -250.0), "Camera arrived exactly at Jinno preset")

func _test_empire_description_and_confirmation() -> void:
	print("\n--- Test 4: Empire Metadata & Confirmation Phase Transition ---")
	var emp = SystemClass.new(SystemClass.EMPIRE_JINNO)

	var info = emp.get_selected_empire_info()
	_assert(info["desc"].contains("崇尚武道强权"), "Contains Jinno lore description")
	_assert(info["trait"].contains("物理基础攻击力 +5%"), "Contains Jinno trait bonus")

	var conf = emp.confirm_empire_selection()
	_assert(conf["success"] == true, "Confirmed empire selection")
	_assert(conf["empire_id"] == SystemClass.EMPIRE_JINNO, "Confirmed Jinno (3)")
	_assert(conf["next_phase"] == "CHARACTER_SELECT", "Routes to CHARACTER_SELECT phase")