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

import Foundation

/// 登录显示类型枚举
enum EPLoginDisplayType {
    case id              // ID + 密码
    case email           // 邮箱 + 验证码
    case phone           // 手机号 + 验证码
    case emailReset      // 邮箱找回密码
    case phoneReset      // 手机号找回密码
}

/// 登录状态验证器（Phase 2 实现）
class EPLoginValidator {
    
    /// 密码强度验证：6-16位，必须包含字母+数字
    func validatePassword(_ password: String) -> Bool {
        guard password.count >= 6 && password.count <= 16 else { return false }
        
        let hasLetter = password.rangeOfCharacter(from: .letters) != nil
        let hasDigit = password.rangeOfCharacter(from: .decimalDigits) != nil
        
        return hasLetter && hasDigit
    }
    
    /// 邮箱格式验证
    func validateEmail(_ email: String) -> Bool {
        let emailRegex = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
        let emailPredicate = NSPredicate(format: "SELF MATCHES %@", emailRegex)
        return emailPredicate.evaluate(with: email)
    }
    
    /// 验证码格式验证（6位数字）
    func validateCode(_ code: String) -> Bool {
        guard code.count == 6 else { return false }
        return code.allSatisfy { $0.isNumber }
    }
    
    /// 手机号格式验证（简单验证）
    func validatePhone(_ phone: String) -> Bool {
        let phoneRegex = "^[0-9]{10,15}$"
        let phonePredicate = NSPredicate(format: "SELF MATCHES %@", phoneRegex)
        return phonePredicate.evaluate(with: phone)
    }
}