extends Control

# 信号定义
signal login_success(username: String)

# UI节点引用
@onready var background_image: TextureRect = $BackgroundImage
@onready var login_panel: Panel = $CenterContainer/LoginPanel
@onready var register_panel: Panel = $CenterContainer/RegisterPanel
@onready var title_label: Label = $CenterContainer/LoginPanel/VBoxContainer/TitleLabel
@onready var subtitle_label: Label = $CenterContainer/LoginPanel/VBoxContainer/SubtitleLabel
@onready var whale_frame: TextureRect = $WhaleFrame

# 登录表单
@onready var login_username: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/UsernameContainer/UsernameInput
@onready var login_password: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/PasswordContainer/PasswordInput
@onready var login_verification: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/VerificationContainer/VerificationInputContainer/VerificationInput
@onready var login_username_error: Label = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/UsernameContainer/UsernameLabelContainer/UsernameError
@onready var login_password_error: Label = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/PasswordContainer/PasswordLabelContainer/PasswordError
@onready var login_verification_error: Label = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/VerificationContainer/VerificationLabelContainer/VerificationError
@onready var password_container: VBoxContainer = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/PasswordContainer
@onready var verification_container: VBoxContainer = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/VerificationContainer
@onready var get_code_btn: Button = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/VerificationContainer/VerificationInputContainer/GetCodeBtn
@onready var main_btn: Button = $CenterContainer/LoginPanel/VBoxContainer/MainButton
@onready var login_btn: Button = $CenterContainer/LoginPanel/VBoxContainer/ButtonContainer/LoginBtn
@onready var forgot_password_btn: Button = $CenterContainer/LoginPanel/VBoxContainer/BottomLinks/ForgotPassword
@onready var register_link_btn: Button = $CenterContainer/LoginPanel/VBoxContainer/BottomLinks/RegisterLink

# 注册表单
@onready var register_username: LineEdit = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/UsernameContainer/UsernameInput
@onready var register_email: LineEdit = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/EmailContainer/EmailInput
@onready var register_password: LineEdit = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/PasswordContainer/PasswordInput
@onready var register_confirm: LineEdit = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/ConfirmContainer/ConfirmInput
@onready var verification_input: LineEdit = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/VerificationContainer/VerificationInputContainer/VerificationInput
@onready var send_code_btn: Button = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/VerificationContainer/VerificationInputContainer/SendCodeBtn
@onready var register_btn: Button = $CenterContainer/RegisterPanel/VBoxContainer/ButtonContainer/RegisterBtn
@onready var to_login_btn: Button = $CenterContainer/RegisterPanel/VBoxContainer/ButtonContainer/ToLoginBtn

# 错误提示标签
@onready var register_username_error: Label = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/UsernameContainer/UsernameLabelContainer/UsernameError
@onready var register_email_error: Label = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/EmailContainer/EmailLabelContainer/EmailError
@onready var register_password_error: Label = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/PasswordContainer/PasswordLabelContainer/PasswordError
@onready var register_confirm_error: Label = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/ConfirmContainer/ConfirmLabelContainer/ConfirmError
@onready var verification_error: Label = $CenterContainer/RegisterPanel/VBoxContainer/RegisterForm/VerificationContainer/VerificationLabelContainer/VerificationError

# Toast消息节点
@onready var toast_container: Control = $ToastContainer

# Toast管理
var active_toasts: Array = []
var toast_counter: int = 0

# 验证码状态
var verification_codes_sent: Dictionary = {}
var code_cooldown: float = 60.0
var cooldown_timer: Timer = null
var current_email: String = ""

# 登录模式枚举
enum LoginMode {
	PASSWORD,      # 密码登录模式
	VERIFICATION   # 验证码登录模式
}

# 当前登录模式
var current_login_mode: LoginMode = LoginMode.PASSWORD

# 网络请求管理
var active_request_ids: Array = []

func _ready():
	connect_signals()
	show_login_panel()
	update_login_mode_ui()  # 初始化登录模式UI
	await get_tree().process_frame
	print("认证系统已加载")
	test_network_connection()

func test_network_connection():
	print("=== 测试网络连接 ===")
	
	var request_id = NetworkManager.get_app_status(_on_network_test_response)
	if request_id != "":
		active_request_ids.append(request_id)
		print("网络测试请求已发送，ID: ", request_id)
	else:
		print("网络连接测试失败")
func connect_signals():
	# 主要按钮
	main_btn.pressed.connect(_on_main_button_pressed)
	
	# 登录界面按钮
	login_btn.pressed.connect(_on_login_pressed)
	forgot_password_btn.pressed.connect(_on_forgot_password_pressed)
	register_link_btn.pressed.connect(_on_register_link_pressed)
	get_code_btn.pressed.connect(_on_get_login_code_pressed)
	
	# 注册界面按钮
	register_btn.pressed.connect(_on_register_pressed)
	to_login_btn.pressed.connect(_on_to_login_pressed)
	send_code_btn.pressed.connect(_on_send_code_pressed)
	
	# 回车键登录
	login_password.text_submitted.connect(_on_login_enter)
	
	# 登录表单失焦验证
	login_username.focus_exited.connect(_on_login_username_focus_exited)
	login_password.focus_exited.connect(_on_login_password_focus_exited)
	login_verification.focus_exited.connect(_on_login_verification_focus_exited)
	
	# 注册表单失焦验证
	register_username.focus_exited.connect(_on_register_username_focus_exited)
	register_email.focus_exited.connect(_on_register_email_focus_exited)
	register_password.focus_exited.connect(_on_register_password_focus_exited)
	register_confirm.focus_exited.connect(_on_register_confirm_focus_exited)
	verification_input.focus_exited.connect(_on_verification_focus_exited)
	
	# 实时输入验证
	register_username.text_changed.connect(_on_register_username_text_changed)
	register_email.text_changed.connect(_on_register_email_text_changed)
	register_password.text_changed.connect(_on_register_password_text_changed)
	register_confirm.text_changed.connect(_on_register_confirm_text_changed)
	verification_input.text_changed.connect(_on_verification_text_changed)

func show_login_panel():
	login_panel.visible = true
	register_panel.visible = false
	login_username.grab_focus()

func show_register_panel():
	login_panel.visible = false
	register_panel.visible = true
	register_username.grab_focus()

# 更新登录模式UI
func update_login_mode_ui():
	if current_login_mode == LoginMode.PASSWORD:
		# 密码登录模式
		login_btn.text = "验证码登录"
		forgot_password_btn.text = "忘记密码"
		
		# 显示密码输入框，隐藏验证码输入框
		password_container.visible = true
		verification_container.visible = false
		
		# 清空验证码输入框和错误提示
		login_verification.text = ""
		hide_field_error(login_verification_error)
		
	else:  # VERIFICATION mode
		# 验证码登录模式
		login_btn.text = "密码登录"
		forgot_password_btn.text = "获取验证码"
		
		# 隐藏密码输入框，显示验证码输入框
		password_container.visible = false
		verification_container.visible = true
		
		# 清空密码输入框和错误提示
		login_password.text = ""
		hide_field_error(login_password_error)
		# 这里需要根据实际UI结构调整

# 切换登录模式
func toggle_login_mode():
	if current_login_mode == LoginMode.PASSWORD:
		current_login_mode = LoginMode.VERIFICATION
	else:
		current_login_mode = LoginMode.PASSWORD
	
	update_login_mode_ui()
	
	# 清空输入框
	login_username.text = ""
	login_password.text = ""
	hide_field_error(login_username_error)
	hide_field_error(login_password_error)

# ============ 按钮事件处理 ============

func _on_main_button_pressed():
	# 根据当前登录模式执行不同的登录逻辑
	if current_login_mode == LoginMode.PASSWORD:
		_execute_password_login()
	else:
		_execute_verification_login()

func _execute_password_login():
	if not validate_login_form():
		return
	
	var username = login_username.text.strip_edges()
	var password = login_password.text
	
	show_loading(main_btn, "登录中...")
	show_toast('正在验证登录信息...', true)
	
	var request_id = NetworkManager.login(username, password, _on_login_response)
	if request_id != "":
		active_request_ids.append(request_id)
	else:
		restore_button(main_btn, "进入小镇")
		show_toast('网络请求失败', false)

func _execute_verification_login():
	var identifier = login_username.text.strip_edges()
	var verification_code = login_verification.text.strip_edges()
	
	if identifier.is_empty():
		show_field_error(login_username_error, "请输入用户名/手机/邮箱")
		login_username.grab_focus()
		return
	
	if verification_code.is_empty():
		show_field_error(login_verification_error, "请输入验证码")
		login_verification.grab_focus()
		return
	
	show_loading(main_btn, "登录中...")
	show_toast('正在验证验证码...', true)
	
	var request_id = NetworkManager.verification_code_login(identifier, verification_code, _on_verification_login_response)
	if request_id != "":
		active_request_ids.append(request_id)
	else:
		restore_button(main_btn, "进入小镇")
		show_toast('网络请求失败', false)

func _on_login_pressed():
	# 现在这个按钮用于切换登录模式
	toggle_login_mode()

func _on_register_pressed():
	print("注册按钮被点击")
	
	if not validate_register_form():
		print("注册表单验证失败")
		show_toast('请检查并完善注册信息', false)
		return
	
	print("注册表单验证通过，开始注册流程")
	
	var username = register_username.text.strip_edges()
	var email = register_email.text.strip_edges()
	var password = register_password.text
	var verification_code = verification_input.text.strip_edges()
	
	show_loading(register_btn, "注册中...")
	show_toast('正在创建账户...', true)
	
	# 直接调用注册接口，让服务器端处理验证码验证
	send_register_request(username, email, password, verification_code)

func _on_send_code_pressed():
	var email = register_email.text.strip_edges()
	
	var email_validation = validate_email(email)
	if not email_validation.valid:
		show_toast(email_validation.message, false)
		register_email.grab_focus()
		return
	
	hide_field_error(register_email_error)
	
	# 检查冷却时间
	var current_time = Time.get_time_dict_from_system()
	var current_timestamp = current_time.hour * 3600 + current_time.minute * 60 + current_time.second
	
	if verification_codes_sent.has(email):
		var email_data = verification_codes_sent[email]
		if email_data.sent and (current_timestamp - email_data.time) < code_cooldown:
			var remaining = code_cooldown - (current_timestamp - email_data.time)
			show_toast('该邮箱请等待 %d 秒后再次发送' % remaining, false)
			return
	
	if current_email != email:
		stop_current_cooldown()
		current_email = email
	
	if not verification_codes_sent.has(email):
		verification_codes_sent[email] = {}
	
	verification_codes_sent[email].sent = true
	verification_codes_sent[email].time = current_timestamp
	start_cooldown_timer(email)
	
	var request_id = NetworkManager.send_email_verification(email, _on_send_code_response)
	if request_id != "":
		active_request_ids.append(request_id)
	else:
		show_toast('网络请求失败', false)
		reset_verification_button()

func _on_register_link_pressed():
	show_register_panel()

func _on_get_login_code_pressed():
	var identifier = login_username.text.strip_edges()
	
	if identifier.is_empty():
		show_field_error(login_username_error, "请先输入用户名/手机/邮箱")
		login_username.grab_focus()
		return
	
	show_loading(get_code_btn, "发送中...")
	show_toast('正在发送登录验证码...', true)
	
	var request_id = NetworkManager.send_login_verification_code(identifier, _on_send_login_code_response)
	if request_id != "":
		active_request_ids.append(request_id)
	else:
		restore_button(get_code_btn, "获取验证码")
		show_toast('网络请求失败', false)

func _on_to_login_pressed():
	show_login_panel()

func _on_login_enter(_text: String):
	_on_login_pressed()

func _on_forgot_password_pressed():
	var identifier = login_username.text.strip_edges()
	
	if identifier.is_empty():
		show_toast('请先输入邮箱或手机号', false)
		login_username.grab_focus()
		return
	
	if not is_valid_email(identifier) and not is_valid_phone(identifier):
		show_toast('请输入有效的邮箱或手机号', false)
		login_username.grab_focus()
		return
	
	if current_login_mode == LoginMode.PASSWORD:
		# 密码登录模式：发送密码重置验证码
		show_loading(forgot_password_btn, "发送中...")
		show_toast('正在发送密码重置验证码...', true)
		
		var request_id = NetworkManager.forgot_password(identifier, _on_forgot_password_response)
		if request_id != "":
			active_request_ids.append(request_id)
		else:
			restore_button(forgot_password_btn, "忘记密码")
			show_toast('网络请求失败', false)
	else:
		# 验证码登录模式：发送登录验证码
		show_loading(forgot_password_btn, "发送中...")
		show_toast('正在发送登录验证码...', true)
		
		var request_id = NetworkManager.send_login_verification_code(identifier, _on_send_login_code_response)
		if request_id != "":
			active_request_ids.append(request_id)
		else:
			restore_button(forgot_password_btn, "获取验证码")
			show_toast('网络请求失败', false)
# ============ 网络响应处理 ============

func send_register_request(username: String, email: String, password: String, verification_code: String = ""):
	var request_id = NetworkManager.register(username, password, username, email, verification_code, _on_register_response)
	if request_id != "":
		active_request_ids.append(request_id)
	else:
		show_toast('网络请求失败', false)
		restore_button(register_btn, "注册")

func _on_network_test_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 网络测试响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	
	var result = ResponseHandler.handle_network_test_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)

func _on_login_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 登录响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	print("错误信息: ", error_info)
	
	restore_button(main_btn, "进入小镇")
	
	var result = ResponseHandler.handle_login_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)
	
	if result.success:
		var username = login_username.text.strip_edges()
		if data.has("data") and data.data.has("user") and data.data.user.has("username"):
			username = data.data.user.username
		
		login_username.text = ""
		login_password.text = ""
		hide_field_error(login_username_error)
		hide_field_error(login_password_error)
		
		await get_tree().create_timer(1.0).timeout
		login_success.emit(username)

func _on_send_code_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 发送验证码响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	
	var result = ResponseHandler.handle_send_verification_code_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)
	
	if not result.success:
		reset_verification_button()

func _on_send_login_code_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 发送登录验证码响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	
	# 恢复按钮状态
	if current_login_mode == LoginMode.PASSWORD:
		restore_button(forgot_password_btn, "忘记密码")
	else:
		restore_button(forgot_password_btn, "获取验证码")
		restore_button(get_code_btn, "获取验证码")
	
	var result = ResponseHandler.handle_send_login_code_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)

func _on_verification_login_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 验证码登录响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	print("错误信息: ", error_info)
	
	restore_button(main_btn, "进入小镇")
	
	var result = ResponseHandler.handle_verification_code_login_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)
	
	if result.success:
		var username = login_username.text.strip_edges()
		if data.has("data") and data.data.has("user") and data.data.user.has("username"):
			username = data.data.user.username
		
		login_username.text = ""
		hide_field_error(login_username_error)
		
		await get_tree().create_timer(1.0).timeout
		login_success.emit(username)

func _on_forgot_password_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 忘记密码响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	
	restore_button(forgot_password_btn, "忘记密码")
	
	# 使用通用的发送验证码响应处理
	var result = ResponseHandler.handle_send_login_code_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)
	
	if result.success:
		show_toast("密码重置验证码已发送，请查收邮件", true)

func _on_register_response(success: bool, data: Dictionary, error_info: Dictionary):
	print("=== 注册响应处理 ===")
	print("成功: ", success)
	print("数据: ", data)
	
	restore_button(register_btn, "注册")
	
	var result = ResponseHandler.handle_register_response(success, data, error_info)
	
	if result.should_show_toast:
		show_toast(result.message, result.success)
	
	if result.success:
		clear_register_form()
		show_login_panel()
		login_username.text = register_username.text.strip_edges()  # 使用注册时的用户名
# ============ 验证码冷却管理 ============

func start_cooldown_timer(email: String):
	if cooldown_timer != null:
		cooldown_timer.queue_free()
	
	current_email = email
	
	send_code_btn.disabled = true
	send_code_btn.text = "重新发送(60)"
	
	cooldown_timer = Timer.new()
	add_child(cooldown_timer)
	cooldown_timer.wait_time = 1.0
	cooldown_timer.timeout.connect(_on_cooldown_timer_timeout)
	cooldown_timer.start()

func _on_cooldown_timer_timeout():
	var input_email = register_email.text.strip_edges()
	
	if input_email != current_email:
		stop_current_cooldown()
		return
	
	if verification_codes_sent.has(current_email):
		var current_time = Time.get_time_dict_from_system()
		var current_timestamp = current_time.hour * 3600 + current_time.minute * 60 + current_time.second
		var email_data = verification_codes_sent[current_email]
		var remaining = code_cooldown - (current_timestamp - email_data.time)
		
		if remaining > 0:
			send_code_btn.text = "重新发送(%d)" % remaining
		else:
			send_code_btn.text = "重新发送"
			send_code_btn.disabled = false
			
			if cooldown_timer != null:
				cooldown_timer.queue_free()
				cooldown_timer = null
			current_email = ""

func stop_current_cooldown():
	if cooldown_timer != null:
		cooldown_timer.queue_free()
		cooldown_timer = null
	
	send_code_btn.disabled = false
	send_code_btn.text = "发送验证码"
	current_email = ""

func reset_verification_button():
	if current_email != "" and verification_codes_sent.has(current_email):
		verification_codes_sent[current_email].sent = false
	
	stop_current_cooldown()

func clear_register_form():
	register_username.text = ""
	register_email.text = ""
	register_password.text = ""
	register_confirm.text = ""
	verification_input.text = ""
	
	stop_current_cooldown()
	verification_codes_sent.clear()
	
	hide_field_error(register_username_error)
	hide_field_error(register_email_error)
	hide_field_error(register_password_error)
	hide_field_error(register_confirm_error)
	hide_field_error(verification_error)

# ============ Toast消息系统 ============

# 检测文本是否包含中文字符
func contains_chinese(text: String) -> bool:
	for i in range(text.length()):
		var char_code = text.unicode_at(i)
		# 中文字符的Unicode范围
		if (char_code >= 0x4E00 and char_code <= 0x9FFF) or \
		   (char_code >= 0x3400 and char_code <= 0x4DBF) or \
		   (char_code >= 0x20000 and char_code <= 0x2A6DF):
			return true
	return false

func show_toast(message: String, is_success: bool = true):
	print("显示Toast消息: ", message, " 成功: ", is_success)
	
	if toast_container == null:
		print("错误: toast_container 节点不存在")
		return
	
	# 异步创建Toast实例
	create_toast_instance(message, is_success)

func create_toast_instance(message: String, is_success: bool):
	toast_counter += 1
	
	# Web平台字体处理
	var is_web = OS.get_name() == "Web"
	
	# 1. 创建Toast Panel（方框UI）
	var toast_panel = Panel.new()
	toast_panel.name = "Toast_" + str(toast_counter)
	
	# 设置Toast样式
	var style = StyleBoxFlat.new()
	if is_success:
		style.bg_color = Color(0.15, 0.7, 0.15, 0.95)
		style.border_color = Color(0.2, 0.9, 0.2, 0.9)
	else:
		style.bg_color = Color(0.7, 0.15, 0.15, 0.95)
		style.border_color = Color(0.9, 0.2, 0.2, 0.9)
	
	style.border_width_left = 3
	style.border_width_top = 3
	style.border_width_right = 3
	style.border_width_bottom = 3
	style.corner_radius_top_left = 12
	style.corner_radius_top_right = 12
	style.corner_radius_bottom_left = 12
	style.corner_radius_bottom_right = 12
	style.shadow_color = Color(0, 0, 0, 0.3)
	style.shadow_size = 4
	style.shadow_offset = Vector2(2, 2)
	
	toast_panel.add_theme_stylebox_override("panel", style)
	
	# 设置Toast基本尺寸
	var toast_width = 320
	toast_panel.size = Vector2(toast_width, 60)
	
	# 2. 创建VBoxContainer
	var vbox = VBoxContainer.new()
	vbox.add_theme_constant_override("separation", 0)
	vbox.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
	vbox.alignment = BoxContainer.ALIGNMENT_CENTER
	
	# 3. 创建CenterContainer
	var center_container = CenterContainer.new()
	center_container.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	center_container.size_flags_vertical = Control.SIZE_SHRINK_CENTER
	
	# 4. 创建Label（文字控件）
	var text_label = Label.new()
	text_label.text = message
	text_label.add_theme_color_override("font_color", Color(1, 1, 1, 1))
	text_label.add_theme_font_size_override("font_size", 14)
	
	# 平台特定的字体处理
	if is_web:
		print("Web平台Toast字体处理")
		# Web平台使用主题文件
		var chinese_theme = load("res://assets/ui/chinese_theme.tres")
		if chinese_theme:
			text_label.theme = chinese_theme
			print("Web平台应用中文主题")
		else:
			print("Web平台中文主题加载失败")
	else:
		print("桌面平台Toast字体处理")
		# 桌面平台直接加载中文字体
		var desktop_chinese_font = load("res://assets/fonts/msyh.ttc")
		if desktop_chinese_font:
			text_label.add_theme_font_override("font", desktop_chinese_font)
			print("桌面平台使用中文字体")
	
	text_label.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	text_label.custom_minimum_size = Vector2(280, 0)
	text_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
	text_label.vertical_alignment = VERTICAL_ALIGNMENT_CENTER
	
	# 组装控件层级
	center_container.add_child(text_label)
	vbox.add_child(center_container)
	toast_panel.add_child(vbox)
	
	# 计算位置
	var margin = 20
	var start_x = get_viewport().get_visible_rect().size.x
	var final_x = get_viewport().get_visible_rect().size.x - toast_width - margin
	
	# 计算Y位置
	var y_position = margin
	for existing_toast in active_toasts:
		if is_instance_valid(existing_toast):
			y_position += existing_toast.size.y + 15
	
	# 设置初始位置
	toast_panel.position = Vector2(start_x, y_position)
	
	# 添加到容器
	toast_container.add_child(toast_panel)
	active_toasts.append(toast_panel)
	
	# 等待一帧让布局系统计算尺寸
	await get_tree().process_frame
	
	# 让Toast高度自适应内容
	var content_size = vbox.get_combined_minimum_size()
	var final_height = max(60, content_size.y + 20)  # 最小60，加20像素边距
	toast_panel.size.y = final_height
	
	# 重新排列所有Toast
	rearrange_toasts()
	
	# 开始动画
	animate_toast_in(toast_panel, final_x)

func animate_toast_in(toast_panel: Panel, final_x: float):
	var tween = create_tween()
	tween.set_ease(Tween.EASE_OUT)
	tween.set_trans(Tween.TRANS_BACK)
	
	tween.parallel().tween_property(toast_panel, "position:x", final_x, 0.6)
	tween.parallel().tween_property(toast_panel, "modulate:a", 1.0, 0.4)
	
	toast_panel.modulate.a = 0.0
	
	await get_tree().create_timer(3.0).timeout
	animate_toast_out(toast_panel)

func animate_toast_out(toast_panel: Panel):
	if not is_instance_valid(toast_panel):
		return
	
	var tween = create_tween()
	tween.set_ease(Tween.EASE_IN)
	tween.set_trans(Tween.TRANS_QUART)
	
	var end_x = get_viewport().get_visible_rect().size.x + 50
	tween.parallel().tween_property(toast_panel, "position:x", end_x, 0.4)
	tween.parallel().tween_property(toast_panel, "modulate:a", 0.0, 0.3)
	
	await tween.finished
	cleanup_toast(toast_panel)

func cleanup_toast(toast_panel: Panel):
	if not is_instance_valid(toast_panel):
		return
	
	active_toasts.erase(toast_panel)
	rearrange_toasts()
	toast_panel.queue_free()

func rearrange_toasts():
	var margin = 20
	var current_y = margin
	
	for i in range(active_toasts.size()):
		var toast = active_toasts[i]
		if is_instance_valid(toast):
			var tween = create_tween()
			tween.tween_property(toast, "position:y", current_y, 0.2)
			current_y += toast.size.y + 15

# ============ UI工具方法 ============

func show_loading(button: Button, loading_text: String):
	button.disabled = true
	button.text = loading_text

func restore_button(button: Button, original_text: String):
	button.disabled = false
	button.text = original_text

func show_field_error(error_label: Label, message: String):
	error_label.text = message
	error_label.visible = true

func hide_field_error(error_label: Label):
	error_label.visible = false

func is_valid_email(email: String) -> bool:
	return StringUtils.is_valid_email(email)

func is_valid_phone(phone: String) -> bool:
	var regex = RegEx.new()
	regex.compile("^\\+?[1-9]\\d{1,14}$")
	return regex.search(phone) != null

# ============ 表单验证方法 ============

func validate_username(username: String) -> Dictionary:
	var result = {"valid": false, "message": ""}
	
	if username.is_empty():
		result.message = "用户名不能为空"
		return result
	
	if not StringUtils.is_valid_username(username):
		if username.length() > 50:
			result.message = "用户名长度不能超过50字符"
		else:
			result.message = "用户名只能包含字母、数字和下划线"
		return result
	
	result.valid = true
	return result

func validate_email(email: String) -> Dictionary:
	var result = {"valid": false, "message": ""}
	
	if email.is_empty():
		result.message = "邮箱不能为空"
		return result
	
	if not StringUtils.is_valid_email(email):
		result.message = "请输入有效的邮箱地址"
		return result
	
	result.valid = true
	return result

func validate_password(password: String) -> Dictionary:
	return StringUtils.validate_password_strength(password)

func validate_confirm_password(password: String, confirm: String) -> Dictionary:
	var result = {"valid": false, "message": ""}
	
	if confirm.is_empty():
		result.message = "确认密码不能为空"
		return result
	
	if password != confirm:
		result.message = "两次输入的密码不一致"
		return result
	
	result.valid = true
	return result

func validate_verification_code(code: String) -> Dictionary:
	var result = {"valid": false, "message": ""}
	
	if code.is_empty():
		result.message = "验证码不能为空"
		return result
	
	if code.length() != 6:
		result.message = "验证码必须是6位数字"
		return result
	
	for i in range(code.length()):
		var character = code[i]
		if not (character >= '0' and character <= '9'):
			result.message = "验证码必须是6位数字"
			return result
	
	result.valid = true
	return result

# ============ 表单验证事件 ============

func _on_login_username_focus_exited():
	var username = login_username.text.strip_edges()
	if username.is_empty():
		show_field_error(login_username_error, "用户名不能为空")
	else:
		hide_field_error(login_username_error)

func _on_login_password_focus_exited():
	var password = login_password.text
	if password.is_empty():
		show_field_error(login_password_error, "密码不能为空")
	else:
		hide_field_error(login_password_error)

func _on_login_verification_focus_exited():
	var verification_code = login_verification.text.strip_edges()
	if verification_code.is_empty():
		show_field_error(login_verification_error, "验证码不能为空")
	elif verification_code.length() != 6:
		show_field_error(login_verification_error, "验证码必须是6位数字")
	elif not verification_code.is_valid_int():
		show_field_error(login_verification_error, "验证码只能包含数字")
	else:
		hide_field_error(login_verification_error)

func _on_register_username_focus_exited():
	var username = register_username.text.strip_edges()
	var validation = validate_username(username)
	if not validation.valid:
		show_field_error(register_username_error, validation.message)
	else:
		hide_field_error(register_username_error)

func _on_register_email_focus_exited():
	var email = register_email.text.strip_edges()
	var validation = validate_email(email)
	if not validation.valid:
		show_field_error(register_email_error, validation.message)
	else:
		hide_field_error(register_email_error)

func _on_register_password_focus_exited():
	var password = register_password.text
	var validation = validate_password(password)
	if not validation.valid:
		show_field_error(register_password_error, validation.message)
	else:
		hide_field_error(register_password_error)
		if not register_confirm.text.is_empty():
			_on_register_confirm_focus_exited()

func _on_register_confirm_focus_exited():
	var password = register_password.text
	var confirm = register_confirm.text
	var validation = validate_confirm_password(password, confirm)
	if not validation.valid:
		show_field_error(register_confirm_error, validation.message)
	else:
		hide_field_error(register_confirm_error)

func _on_verification_focus_exited():
	var code = verification_input.text.strip_edges()
	var validation = validate_verification_code(code)
	if not validation.valid:
		show_field_error(verification_error, validation.message)
	else:
		hide_field_error(verification_error)

# ============ 实时输入验证事件 ============

func _on_register_username_text_changed(new_text: String):
	if register_username_error.visible and not new_text.is_empty():
		hide_field_error(register_username_error)

func _on_register_email_text_changed(new_text: String):
	if register_email_error.visible and not new_text.is_empty():
		hide_field_error(register_email_error)

func _on_register_password_text_changed(new_text: String):
	if register_password_error.visible and not new_text.is_empty():
		hide_field_error(register_password_error)

func _on_register_confirm_text_changed(new_text: String):
	if register_confirm_error.visible and not new_text.is_empty():
		hide_field_error(register_confirm_error)

func _on_verification_text_changed(new_text: String):
	if verification_error.visible and not new_text.is_empty():
		hide_field_error(verification_error)
# ============ 表单整体验证 ============

func validate_login_form() -> bool:
	var is_valid = true
	
	var username = login_username.text.strip_edges()
	var password = login_password.text
	
	if username.is_empty():
		show_field_error(login_username_error, "用户名不能为空")
		is_valid = false
	else:
		hide_field_error(login_username_error)
	
	if password.is_empty():
		show_field_error(login_password_error, "密码不能为空")
		is_valid = false
	else:
		hide_field_error(login_password_error)
	
	return is_valid

func validate_register_form() -> bool:
	print("开始验证注册表单")
	var is_valid = true
	
	var username = register_username.text.strip_edges()
	var email = register_email.text.strip_edges()
	var password = register_password.text
	var confirm = register_confirm.text
	var verification_code = verification_input.text.strip_edges()
	
	print("表单数据: 用户名='%s', 邮箱='%s', 密码长度=%d, 确认密码长度=%d, 验证码='%s'" % [username, email, password.length(), confirm.length(), verification_code])
	
	var username_validation = validate_username(username)
	if not username_validation.valid:
		print("用户名验证失败: ", username_validation.message)
		show_field_error(register_username_error, username_validation.message)
		is_valid = false
	else:
		hide_field_error(register_username_error)
	
	var email_validation = validate_email(email)
	if not email_validation.valid:
		print("邮箱验证失败: ", email_validation.message)
		show_field_error(register_email_error, email_validation.message)
		is_valid = false
	else:
		hide_field_error(register_email_error)
	
	var password_validation = validate_password(password)
	if not password_validation.valid:
		print("密码验证失败: ", password_validation.message)
		show_field_error(register_password_error, password_validation.message)
		is_valid = false
	else:
		hide_field_error(register_password_error)
	
	var confirm_validation = validate_confirm_password(password, confirm)
	if not confirm_validation.valid:
		print("确认密码验证失败: ", confirm_validation.message)
		show_field_error(register_confirm_error, confirm_validation.message)
		is_valid = false
	else:
		hide_field_error(register_confirm_error)
	
	var code_validation = validate_verification_code(verification_code)
	if not code_validation.valid:
		print("验证码格式验证失败: ", code_validation.message)
		show_field_error(verification_error, code_validation.message)
		is_valid = false
	else:
		hide_field_error(verification_error)
	
	var current_email_input = register_email.text.strip_edges()
	var has_sent_code = false
	
	if verification_codes_sent.has(current_email_input):
		var email_data = verification_codes_sent[current_email_input]
		has_sent_code = email_data.get("sent", false)
	
	if not has_sent_code:
		print("当前邮箱验证码未发送，email = ", current_email_input)
		show_toast("请先获取邮箱验证码", false)
		is_valid = false
	
	print("表单验证结果: ", is_valid)
	return is_valid

# ============ 资源清理 ============

func _exit_tree():
	for request_id in active_request_ids:
		NetworkManager.cancel_request(request_id)
	active_request_ids.clear()
	
	if cooldown_timer != null:
		cooldown_timer.queue_free()
		cooldown_timer = null

func _input(event):
	if event.is_action_pressed("ui_cancel"):
		get_tree().quit()