//
//  EPLoginService.swift
//  YuMi
//
//  Created by AI on 2025-01-27.
//

import Foundation

/// 登录服务封装（Swift 现代化版本）
/// 统一封装所有登录相关 API，完全替代 OC 版本的 LoginPresenter
@objc class EPLoginService: NSObject {
    
    // MARK: - Constants
    
    private let clientSecret = EPLoginConfig.API.clientSecret
    private let clientId = EPLoginConfig.API.clientId
    private let version = EPLoginConfig.API.version
    
    // MARK: - Private Helper Methods
    
    /// 解析并保存 AccountModel
    /// - Parameters:
    ///   - data: API 返回的数据
    ///   - code: 状态码
    ///   - completion: 成功回调
    ///   - failure: 失败回调
    private func parseAndSaveAccount(data: BaseModel?, 
                                    code: Int64,
                                    completion: @escaping (AccountModel) -> Void,
                                    failure: @escaping (Int, String) -> Void) {
        if code == 200 {
            if let accountDict = data?.data as? NSDictionary,
               let accountModel = AccountModel.mj_object(withKeyValues: accountDict) {
                // 保存账号信息
                AccountInfoStorage.instance().saveAccountInfo(accountModel)
                completion(accountModel)
            } else {
                failure(Int(code), "账号信息解析失败")
            }
        } else {
            failure(Int(code), "操作失败")
        }
    }
    
    // MARK: - Request Ticket
    
    /// 请求 Ticket（登录成功后调用）
    /// - Parameters:
    ///   - accessToken: 访问令牌
    ///   - completion: 成功回调 (ticket)
    ///   - failure: 失败回调 (错误码, 错误信息)
    @objc func requestTicket(accessToken: String, 
                            completion: @escaping (String) -> Void,
                            failure: @escaping (Int, String) -> Void) {
        
        Api.requestTicket({ (data, code, msg) in
            if code == 200, let dict = data?.data as? NSDictionary {
                if let tickets = dict["tickets"] as? NSArray,
                   let firstTicket = tickets.firstObject as? NSDictionary,
                   let ticket = firstTicket["ticket"] as? String {
                    completion(ticket)
                } else {
                    failure(Int(code), "Ticket 解析失败")
                }
            } else {
                failure(Int(code), msg ?? "请求 Ticket 失败")
            }
        }, access_token: accessToken, issue_type: "multi")
    }
    
    // MARK: - Send Verification Code
    
    /// 发送邮箱验证码
    /// - Parameters:
    ///   - email: 邮箱地址
    ///   - type: 类型 (1=登录, 2=找回密码)
    ///   - completion: 成功回调
    ///   - failure: 失败回调
    @objc func sendEmailCode(email: String, 
                           type: Int,
                           completion: @escaping () -> Void,
                           failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密邮箱
        let encryptedEmail = encryptDES(email)
        
        Api.emailGetCode({ (data, code, msg) in
            if code == 200 {
                completion()
            } else {
                failure(Int(code), msg ?? "发送邮箱验证码失败")
            }
        }, emailAddress: encryptedEmail, type: NSNumber(value: type))
    }
    
    /// 发送手机验证码
    /// - Parameters:
    ///   - phone: 手机号
    ///   - areaCode: 区号
    ///   - type: 类型 (1=登录, 2=找回密码)
    ///   - completion: 成功回调
    ///   - failure: 失败回调
    @objc func sendPhoneCode(phone: String, 
                           areaCode: String,
                           type: Int,
                           completion: @escaping () -> Void,
                           failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密手机号
        let encryptedPhone = encryptDES(phone)
        
        Api.phoneSmsCode({ (data, code, msg) in
            if code == 200 {
                completion()
            } else {
                failure(Int(code), msg ?? "发送手机验证码失败")
            }
        }, mobile: encryptedPhone, type: String(type), phoneAreaCode: areaCode)
    }
    
    // MARK: - Login Methods
    
    /// ID + 密码登录
    /// - Parameters:
    ///   - id: 用户 ID
    ///   - password: 密码
    ///   - completion: 成功回调 (AccountModel)
    ///   - failure: 失败回调
    @objc func loginWithID(id: String, 
                         password: String,
                         completion: @escaping (AccountModel) -> Void,
                         failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密 ID 和密码
        let encryptedId = encryptDES(id)
        let encryptedPassword = encryptDES(password)
        
        Api.login(password: { [weak self] (data, code, msg) in
            self?.parseAndSaveAccount(
                data: data,
                code: Int64(code),
                completion: completion,
                failure: { errorCode, _ in
                    failure(errorCode, msg ?? "登录失败")
                })
        },
        phone: encryptedId,
        password: encryptedPassword,
        client_secret: clientSecret,
        version: version,
        client_id: clientId,
        grant_type: "password")
    }
    
    /// 邮箱 + 验证码登录
    /// - Parameters:
    ///   - email: 邮箱地址
    ///   - code: 验证码
    ///   - completion: 成功回调 (AccountModel)
    ///   - failure: 失败回调
    @objc func loginWithEmail(email: String, 
                            code: String,
                            completion: @escaping (AccountModel) -> Void,
                            failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密邮箱
        let encryptedEmail = encryptDES(email)
        
        Api.login(code: { [weak self] (data, code, msg) in
            self?.parseAndSaveAccount(
                data: data,
                code: Int64(code),
                completion: completion,
                failure: { errorCode, _ in
                    failure(errorCode, msg ?? "登录失败")
                })
        },
        email: encryptedEmail,
        code: code,
        client_secret: clientSecret,
        version: version,
        client_id: clientId,
        grant_type: "email")
    }
    
    /// 手机号 + 验证码登录
    /// - Parameters:
    ///   - phone: 手机号
    ///   - code: 验证码
    ///   - areaCode: 区号
    ///   - completion: 成功回调 (AccountModel)
    ///   - failure: 失败回调
    @objc func loginWithPhone(phone: String, 
                            code: String,
                            areaCode: String,
                            completion: @escaping (AccountModel) -> Void,
                            failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密手机号
        let encryptedPhone = encryptDES(phone)
        
        Api.login(code: { [weak self] (data, code, msg) in
            self?.parseAndSaveAccount(
                data: data,
                code: Int64(code),
                completion: completion,
                failure: { errorCode, _ in
                    failure(errorCode, msg ?? "登录失败")
                })
        },
        phone: encryptedPhone,
        code: code,
        client_secret: clientSecret,
        version: version,
        client_id: clientId,
        grant_type: "password",
        phoneAreaCode: areaCode)
    }
    
    // MARK: - Reset Password
    
    /// 邮箱重置密码
    /// - Parameters:
    ///   - email: 邮箱地址
    ///   - code: 验证码
    ///   - newPassword: 新密码
    ///   - completion: 成功回调
    ///   - failure: 失败回调
    @objc func resetEmailPassword(email: String, 
                                code: String,
                                newPassword: String,
                                completion: @escaping () -> Void,
                                failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密邮箱和新密码
        let encryptedEmail = encryptDES(email)
        let encryptedPassword = encryptDES(newPassword)
        
        Api.resetPassword(email: { (data, code, msg) in
            if code == 200 {
                completion()
            } else {
                failure(Int(code), msg ?? "重置密码失败")
            }
        }, email: encryptedEmail, newPwd: encryptedPassword, code: code)
    }
    
    /// 手机号重置密码
    /// - Parameters:
    ///   - phone: 手机号
    ///   - code: 验证码
    ///   - areaCode: 区号
    ///   - newPassword: 新密码
    ///   - completion: 成功回调
    ///   - failure: 失败回调
    @objc func resetPhonePassword(phone: String, 
                                code: String,
                                areaCode: String,
                                newPassword: String,
                                completion: @escaping () -> Void,
                                failure: @escaping (Int, String) -> Void) {
        
        // 🔐 DES 加密手机号和新密码
        let encryptedPhone = encryptDES(phone)
        let encryptedPassword = encryptDES(newPassword)
        
        Api.resetPassword(phone: { (data, code, msg) in
            if code == 200 {
                completion()
            } else {
                failure(Int(code), msg ?? "重置密码失败")
            }
        }, phone: encryptedPhone, newPwd: encryptedPassword, smsCode: code, phoneAreaCode: areaCode)
    }
    
    // MARK: - Phone Quick Login (保留接口)
    
    /// 手机快速登录（保留接口但 UI 暂不暴露）
    /// - Parameters:
    ///   - accessToken: 访问令牌
    ///   - token: 令牌
    ///   - completion: 成功回调 (AccountModel)
    ///   - failure: 失败回调
    @objc func phoneQuickLogin(accessToken: String, 
                             token: String,
                             completion: @escaping (AccountModel) -> Void,
                             failure: @escaping (Int, String) -> Void) {
        
        Api.phoneQuickLogin({ [weak self] (data, code, msg) in
            self?.parseAndSaveAccount(
                data: data,
                code: Int64(code),
                completion: completion,
                failure: { errorCode, _ in
                    failure(errorCode, msg ?? "快速登录失败")
                })
        },
        accessToken: accessToken,
        token: token)
    }
}