import supa from '@/components/supadb/aksupainstance.uts'

// ─────────────────────────────────────────────────────────────
// akUserMapping - Supabase Auth ID 到业务用户 ID 的映射管理
// 
// 核心概念：
// - authUserId: Supabase Auth 用户 ID（session.user.id）
// - akUserId: 业务用户 ID（ak_users.id）
// - 所有业务表（ec_care_tasks.assigned_to、hc_dispatch_assignments.worker_id 等）
//   都使用 akUserId，不是 authUserId
// ─────────────────────────────────────────────────────────────

const AUTH_USER_ID_KEY = 'auth_user_id'       // Supabase Auth ID
const AK_USER_ID_KEY = 'ak_user_id'            // 业务用户 ID
const AK_USER_PROFILE_KEY = 'current_ak_user'  // 完整业务用户信息

export type AkUserProfile = {
	id: string           // ak_users.id（业务用户 ID）
	auth_id: string      // ak_users.auth_id（Supabase Auth ID）
	username: string
	email: string
	role: string
	user_type: string
	status: string
}

/**
 * 加载当前登录用户的业务账号信息
 * 查询顺序：
 * 1. auth_id = session.user.id
 * 2. id = uni.getStorageSync('user_id')
 * 3. email = 当前登录邮箱
 * 4. 最后才失败
 */
export async function loadCurrentAkUser(): Promise<AkUserProfile> {
	// 1. 获取当前 Supabase Auth 用户
	const session = supa.getSession()
	if (session == null || session.user == null) {
		throw new Error('未登录或登录状态失效')
	}

	const authUserId = session.user.getString('id') ?? ''
	if (authUserId == '') {
		throw new Error('未获取到 Supabase Auth 用户 ID')
	}

	// 2. 查询 ak_users 表，通过 auth_id 匹配
	console.log('[akUserMapping] 尝试通过 auth_id 查询:', authUserId)
	let { data: profiles, error } = await supa
		.from('ak_users')
		.select('id, auth_id, username, email, role, user_type, status')
		.eq('auth_id', authUserId)
		.single()

	if (error == null && profiles != null) {
		console.log('[akUserMapping] 通过 auth_id 查询成功')
	} else {
		console.warn('[akUserMapping] auth_id 查询失败:', error?.message ?? '未知错误')
		
		// 3. 尝试通过 user_id 缓存查询
		const cachedUserId = uni.getStorageSync('user_id')
		if (cachedUserId != null && String(cachedUserId).length > 0) {
			console.log('[akUserMapping] 尝试通过 user_id 缓存查询:', cachedUserId)
			const { data: profilesById, error: errorById } = await supa
				.from('ak_users')
				.select('id, auth_id, username, email, role, user_type, status')
				.eq('id', cachedUserId)
				.single()
			
			if (errorById == null && profilesById != null) {
				profiles = profilesById
				error = null
				console.log('[akUserMapping] 通过 user_id 缓存查询成功')
			} else {
				console.warn('[akUserMapping] user_id 缓存查询失败:', errorById?.message ?? '未知错误')
			}
		}
		
		// 4. 尝试通过 session 中的 email 查询
		if (profiles == null) {
			const userEmail = session.user.getString('email') ?? ''
			if (userEmail != '') {
				console.log('[akUserMapping] 尝试通过 email 查询:', userEmail)
				const { data: profilesByEmail, error: errorByEmail } = await supa
					.from('ak_users')
					.select('id, auth_id, username, email, role, user_type, status')
					.eq('email', userEmail)
					.single()
				
				if (errorByEmail == null && profilesByEmail != null) {
					profiles = profilesByEmail
					error = null
					console.log('[akUserMapping] 通过 email 查询成功')
				} else {
					console.warn('[akUserMapping] email 查询失败:', errorByEmail?.message ?? '未知错误')
				}
			}
		}
	}

	if (error != null || profiles == null) {
		console.error('[akUserMapping] ❌ 所有查询方式都失败')
		console.error('[akUserMapping]   authUserId:', authUserId)
		console.error('[akUserMapping]   user_id 缓存:', uni.getStorageSync('user_id'))
		console.error('[akUserMapping]   session email:', session.user?.getString('email'))
		throw new Error('未找到当前用户的业务账号，请联系管理员绑定 ak_users.auth_id')
	}

	// 5. 存储到本地
	const profile: AkUserProfile = {
		id: profiles.getString('id') ?? '',
		auth_id: profiles.getString('auth_id') ?? '',
		username: profiles.getString('username') ?? '',
		email: profiles.getString('email') ?? '',
		role: profiles.getString('role') ?? '',
		user_type: profiles.getString('user_type') ?? '',
		status: profiles.getString('status') ?? ''
	}

	uni.setStorageSync(AUTH_USER_ID_KEY, profile.auth_id)
	uni.setStorageSync(AK_USER_ID_KEY, profile.id)
	uni.setStorageSync(AK_USER_PROFILE_KEY, JSON.stringify(profile))

	console.log('[akUserMapping] 加载业务用户成功:', {
		authUserId: profile.auth_id,
		akUserId: profile.id,
		username: profile.username,
		role: profile.role
	})

	return profile
}

/**
 * 获取当前业务用户 ID（ak_users.id）
 * 优先级：
 * 1. uni.getStorageSync('ak_user_id')
 * 2. uni.getStorageSync('current_ak_user').id
 * 3. uni.getStorageSync('user_info').id
 * 4. uni.getStorageSync('userInfo').id
 * 5. uni.getStorageSync('user').id
 * 6. uni.getStorageSync('uid')
 * 7. uni.getStorageSync('user_id')
 * 8. uni.getStorageSync('auth_user_id')
 * 9. 最后再请求 ak_users 表或 RPC resolve_ak_user_id
 */
export async function getCurrentAkUserId(): Promise<string> {
	// 1. 尝试从 ak_user_id 缓存读取
	const cachedAkUserId = uni.getStorageSync(AK_USER_ID_KEY)
	if (cachedAkUserId != null && String(cachedAkUserId).length > 0) {
		const result = String(cachedAkUserId)
		console.log('[akUserMapping] getCurrentAkUserId: 从 ak_user_id 缓存读取:', result)
		return result
	}

	// 2. 尝试从 current_ak_user 缓存读取
	const cachedProfile = uni.getStorageSync(AK_USER_PROFILE_KEY)
	if (cachedProfile != null && String(cachedProfile).length > 0) {
		try {
			const profile = JSON.parse(cachedProfile) as AkUserProfile
			if (profile.id != null && profile.id !== '') {
				const result = profile.id
				console.log('[akUserMapping] getCurrentAkUserId: 从 current_ak_user 缓存读取:', result)
				return result
			}
		} catch (e) {
			console.warn('[akUserMapping] getCurrentAkUserId: 解析 current_ak_user 失败:', e)
		}
	}

	// 3. 尝试从 user_info 缓存读取
	try {
		const cachedUserInfo = uni.getStorageSync('user_info')
		if (cachedUserInfo != null && String(cachedUserInfo).length > 0) {
			try {
				const userInfo = JSON.parse(cachedUserInfo) as any
				if (userInfo != null && userInfo.id != null && String(userInfo.id).length > 0) {
					const result = String(userInfo.id)
					console.log('[akUserMapping] getCurrentAkUserId: 从 user_info 缓存读取:', result)
					return result
				}
			} catch (e) {
				console.warn('[akUserMapping] getCurrentAkUserId: 解析 user_info 失败:', e)
			}
		}
	} catch (e) {
		console.warn('[akUserMapping] getCurrentAkUserId: user_info 读取失败:', e)
	}

	// 4. 尝试从 userInfo 缓存读取
	try {
		const cachedUserInfo = uni.getStorageSync('userInfo')
		if (cachedUserInfo != null && String(cachedUserInfo).length > 0) {
			try {
				const userInfo = JSON.parse(cachedUserInfo) as any
				if (userInfo != null && userInfo.id != null && String(userInfo.id).length > 0) {
					const result = String(userInfo.id)
					console.log('[akUserMapping] getCurrentAkUserId: 从 userInfo 缓存读取:', result)
					return result
				}
			} catch (e) {
				console.warn('[akUserMapping] getCurrentAkUserId: 解析 userInfo 失败:', e)
			}
		}
	} catch (e) {
		console.warn('[akUserMapping] getCurrentAkUserId: userInfo 读取失败:', e)
	}

	// 5. 尝试从 user 缓存读取
	try {
		const cachedUser = uni.getStorageSync('user')
		if (cachedUser != null && String(cachedUser).length > 0) {
			try {
				const user = JSON.parse(cachedUser) as any
				if (user != null && user.id != null && String(user.id).length > 0) {
					const result = String(user.id)
					console.log('[akUserMapping] getCurrentAkUserId: 从 user 缓存读取:', result)
					return result
				}
			} catch (e) {
				console.warn('[akUserMapping] getCurrentAkUserId: 解析 user 失败:', e)
			}
		}
	} catch (e) {
		console.warn('[akUserMapping] getCurrentAkUserId: user 读取失败:', e)
	}

	// 6. 尝试从 uid 缓存读取
	const cachedUid = uni.getStorageSync('uid')
	if (cachedUid != null && String(cachedUid).length > 0) {
		const result = String(cachedUid)
		console.log('[akUserMapping] getCurrentAkUserId: 从 uid 缓存读取:', result)
		return result
	}

	// 7. 尝试从 user_id 缓存读取
	const cachedUserId = uni.getStorageSync('user_id')
	if (cachedUserId != null && String(cachedUserId).length > 0) {
		const result = String(cachedUserId)
		console.log('[akUserMapping] getCurrentAkUserId: 从 user_id 缓存读取:', result)
		return result
	}

	// 8. 尝试从 auth_user_id 缓存读取（可能是 Supabase Auth ID，需要转换）
	const cachedAuthUserId = uni.getStorageSync(AUTH_USER_ID_KEY)
	if (cachedAuthUserId != null && String(cachedAuthUserId).length > 0) {
		const authId = String(cachedAuthUserId)
		console.log('[akUserMapping] getCurrentAkUserId: 从 auth_user_id 缓存读取到 Auth ID:', authId)
		
		// 禁止直接返回 auth_user_id，必须通过 RPC 或 ak_users 表转换
		console.log('[akUserMapping] 尝试通过 RPC resolve_ak_user_id 转换 Auth ID')
		try {
			const rpcParams = { p_auth_user_id: authId } as UTSJSONObject
			const { data: resolvedData, error: resolveError } = await supa
				.rpc('resolve_ak_user_id', rpcParams)
			
			if (resolveError == null && resolvedData != null) {
				const akUserId = String(resolvedData)
				if (akUserId != '' && akUserId != 'null') {
					console.log('[akUserMapping] RPC 转换成功，akUserId:', akUserId)
					// 缓存 akUserId
					uni.setStorageSync(AK_USER_ID_KEY, akUserId)
					return akUserId
				}
			}
			console.warn('[akUserMapping] RPC 转换失败:', resolveError?.message ?? '未知错误')
		} catch (rpcErr) {
			console.warn('[akUserMapping] RPC 转换异常:', rpcErr)
		}
		
		// 如果 RPC 失败，尝试通过 ak_users 表查询
		console.log('[akUserMapping] 尝试通过 ak_users 表查询 auth_id 映射')
		const { data: profiles, error } = await supa
			.from('ak_users')
			.select('id')
			.eq('auth_id', authId)
			.single()
		
		if (error == null && profiles != null) {
			const akUserId = profiles.getString('id') ?? ''
			if (akUserId != '') {
				console.log('[akUserMapping] ak_users 表查询成功，akUserId:', akUserId)
				uni.setStorageSync(AK_USER_ID_KEY, akUserId)
				return akUserId
			}
		}
		console.warn('[akUserMapping] ak_users 表查询也失败')
	}

	// 9. 最后尝试从 Supabase session 查询 ak_users
	try {
		const session = supa.getSession()
		if (session != null && session.user != null) {
			const authUserId = session.user.getString('id') ?? ''
			if (authUserId != '') {
				console.log('[akUserMapping] getCurrentAkUserId: 尝试从 Supabase session 查询 ak_users, authUserId:', authUserId)
				const { data: profiles, error } = await supa
					.from('ak_users')
					.select('id')
					.eq('auth_id', authUserId)
					.single()
				
				if (error == null && profiles != null) {
					const akUserId = profiles.getString('id') ?? ''
					if (akUserId != '') {
						console.log('[akUserMapping] getCurrentAkUserId: Supabase 查询成功:', akUserId)
						// 缓存结果
						uni.setStorageSync(AK_USER_ID_KEY, akUserId)
						return akUserId
					}
				}
				console.warn('[akUserMapping] getCurrentAkUserId: Supabase 查询未找到 ak_users 记录')
			}
		}
	} catch (e) {
		console.warn('[akUserMapping] getCurrentAkUserId: Supabase 查询失败:', e)
	}

	// 10. 全部失败，返回空字符串（不 throw）
	console.warn('[akUserMapping] getCurrentAkUserId: 所有降级策略失败，返回空字符串')
	return ''
}

/**
 * 获取当前业务用户完整信息
 */
export async function getCurrentAkUser(): Promise<AkUserProfile | null> {
	// 1. 尝试从缓存读取
	const cached = uni.getStorageSync(AK_USER_PROFILE_KEY)
	if (cached != null && String(cached).length > 0) {
		try {
			return JSON.parse(cached) as AkUserProfile
		} catch (e) {
			// 解析失败，重新加载
		}
	}

	// 2. 缓存不存在，自动加载
	try {
		return await loadCurrentAkUser()
	} catch (e) {
		return null
	}
}

/**
 * 获取当前 Supabase Auth 用户 ID
 */
export function getCurrentAuthUserId(): string {
	const cached = uni.getStorageSync(AUTH_USER_ID_KEY)
	if (cached != null && String(cached).length > 0) {
		return String(cached)
	}

	// 尝试从 session 获取
	try {
		const session = supa.getSession()
		if (session != null && session.user != null) {
			return session.user.getString('id') ?? ''
		}
	} catch (e) {}

	return ''
}

/**
 * 清除本地存储的 ak_user 信息
 */
export function clearAkUserCache(): void {
	uni.removeStorageSync(AUTH_USER_ID_KEY)
	uni.removeStorageSync(AK_USER_ID_KEY)
	uni.removeStorageSync(AK_USER_PROFILE_KEY)
}

/**
 * 调试输出：打印当前用户信息
 */
export function debugCurrentUser(): void {
	console.log('[akUserMapping] ========== 当前用户调试信息 ==========')
	console.log('[akUserMapping] authUserId:', uni.getStorageSync(AUTH_USER_ID_KEY))
	console.log('[akUserMapping] akUserId:', uni.getStorageSync(AK_USER_ID_KEY))
	
	const profileRaw = uni.getStorageSync(AK_USER_PROFILE_KEY)
	if (profileRaw != null && String(profileRaw).length > 0) {
		try {
			const profile = JSON.parse(profileRaw) as AkUserProfile
			console.log('[akUserMapping] profile:', profile)
		} catch (e) {
			console.log('[akUserMapping] profile (raw):', profileRaw)
		}
	} else {
		console.log('[akUserMapping] profile: (未缓存)')
	}
	console.log('[akUserMapping] ======================================')
}