/**
 * 用户状态管理
 * 使用 uni-app x 的响应式系统
 */

import type { UserInfo } from '../api/auth'
import { clearHomeStudentProfile } from './home'

// 用户状态类型
type UserState = {
	userInfo: UserInfo | null
	token: string
	isLoggedIn: boolean
	rememberPassword: boolean
	rememberedPhone: string
	rememberedPassword: string
}

// 创建响应式用户状态
const userState = reactive<UserState>({
	userInfo: null,
	token: '',
	isLoggedIn: false,
	rememberPassword: false,
	rememberedPhone: '',
	rememberedPassword: ''
})

/**
 * 初始化用户状态
 * 从本地存储恢复登录状态和记住密码信息
 */
export function initUserStore() {
	// 恢复登录状态
	const token = uni.getStorageSync('token') as string
	const userInfo = uni.getStorageSync('userInfo') as UserInfo | null
	
	if (token && userInfo) {
		userState.token = token
		userState.userInfo = userInfo
		userState.isLoggedIn = true
	}
	
	// 恢复记住密码信息
	const rememberInfo = uni.getStorageSync('rememberInfo') as any
	if (rememberInfo && rememberInfo.remember) {
		userState.rememberPassword = true
		userState.rememberedPhone = rememberInfo.phone
		userState.rememberedPassword = rememberInfo.password
	}
}

/**
 * 设置用户信息
 */
export function setUserInfo(userInfo: UserInfo) {
	userState.userInfo = userInfo
	userState.token = userInfo.token
	userState.isLoggedIn = true
	
	// 保存到本地存储
	uni.setStorageSync('token', userInfo.token)
	uni.setStorageSync('refreshToken', userInfo.refreshToken)
	uni.setStorageSync('userInfo', userInfo)
}

/**
 * 保存记住密码信息
 */
export function saveRememberInfo(phone: string, password: string, remember: boolean) {
	userState.rememberPassword = remember
	userState.rememberedPhone = phone
	userState.rememberedPassword = password
	
	if (remember) {
		uni.setStorageSync('rememberInfo', {
			phone,
			password,
			remember: true
		})
	} else {
		uni.removeStorageSync('rememberInfo')
	}
}

/**
 * 获取记住的密码信息
 */
export function getRememberInfo(): { phone: string, password: string, remember: boolean } {
	return {
		phone: userState.rememberedPhone,
		password: userState.rememberedPassword,
		remember: userState.rememberPassword
	}
}

/**
 * 清除用户状态
 */
export function clearUserInfo() {
	userState.userInfo = null
	userState.token = ''
	userState.isLoggedIn = false
	
	// 清除本地存储
	uni.removeStorageSync('token')
	uni.removeStorageSync('refreshToken')
	uni.removeStorageSync('userInfo')
	clearHomeStudentProfile()
}

/**
 * 退出登录
 */
export function logout() {
	clearUserInfo()
	
	// 跳转到登录页
	uni.reLaunch({
		url: '/pages/login/index'
	})
}

/**
 * 获取用户信息
 */
export function getUserInfo(): UserInfo | null {
	return userState.userInfo
}

/**
 * 获取Token
 */
export function getToken(): string {
	return userState.token
}

/**
 * 获取登录状态
 */
export function getIsLoggedIn(): boolean {
	return userState.isLoggedIn
}

/**
 * 更新Token
 */
export function updateToken(token: string, refreshToken: string) {
	userState.token = token
	uni.setStorageSync('token', token)
	uni.setStorageSync('refreshToken', refreshToken)
	
	if (userState.userInfo !== null) {
		userState.userInfo.token = token
		userState.userInfo.refreshToken = refreshToken
		uni.setStorageSync('userInfo', userState.userInfo)
	}
}

// 导出用户状态(只读)
export function useUserStore() {
	return {
		userInfo: computed(() => userState.userInfo),
		token: computed(() => userState.token),
		isLoggedIn: computed(() => userState.isLoggedIn),
		rememberPassword: computed(() => userState.rememberPassword),
		rememberedPhone: computed(() => userState.rememberedPhone),
		rememberedPassword: computed(() => userState.rememberedPassword)
	}
}