//
//  Foundation+.swift
//  常规扩展
//
//  Created by CC-star on 2025/6/29.
//

import Foundation


//以1开头,再加10个数字【\d】(\\d -> 转义字符\ -> \d)，并以数字结尾
let kPhoneRegEx = "^1\\d{10}$"//中国手机号正则表达式

let kVerCodeRegEx = "^\\d{6}$"//验证码正则表达式
extension NSRegularExpression {
   convenience init(_ pattern: String) {
      do {
         try self.init(pattern: pattern)
      } catch {
         fatalError("非法的正则表达式")//因不能确保调用父类的init函数
      }
   }
   func matches(_ string: String) -> Bool {
      let range = NSRange(location: 0, length: string.utf16.count)
      return firstMatch(in: string, options: [], range: range) != nil
   }
}

extension String {
   var isBlank: Bool { self.isEmpty || self.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty }//没有输入或者输入空格
   var trimmed: String { self.trimmingCharacters(in: .whitespacesAndNewlines) }
   var isPhoneNum: Bool {
      Int(self) != nil && NSRegularExpression(kPhoneRegEx).matches(self)
      //判断该字符串是否可以转化为int类型 nor 置空  -> 判断用户是否输入的是数字
   }
   var isVerCode: Bool { Int(self) != nil && NSRegularExpression(kVerCodeRegEx).matches(self) }
   //随机字母和数字组合
   static func randomString(_ length: Int) -> String{
      let letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
      return String((0..<length).map{ _ in letters.randomElement()! })
   }
}

extension Date {
   var daysFromNow: Int {
      Calendar.current.dateComponents([.day], from: self, to: .now).day ?? 0//??空合运算符
   }
   

   //   let date = Date()
   //   print(date.string(withFormat: "yyyy/MM/dd HH:mm")) // 2023/08/24 16:21
   //   print(date.string(withFormat: "yyyy/MM/dd hh:mm")) // 2023/08/24 04:21
   var toStr: String {
      let year = Calendar.current.component(.year, from: self)
      let currentYear = Calendar.current.component(.year, from: Date())
      let dateFormatter = DateFormatter()
      dateFormatter.dateFormat = (year == currentYear) ? "M-d" : "yyyy-M-d"
      return dateFormatter.string(from: self)
   }
}

enum UserError: String, Error {
   case lcObjToDicError = "lc对象转换字典失败"
   case saveFileSuccessButNoURL = "保存文件成功，但未能获取文件的地址"
   case imageToheicDataError = "图片转换成heicData失败"
   case imageTooBig = "图片太大"
   case objectIdNotFound = "没找到objectId"
}

enum NetworkError: Error {
   case invalidURL
   case notHTTPResponse
   case requestFailed(String)//枚举关联值
}


extension NetworkError: LocalizedError {//扩展NetworkError的中文提示
   var errorDescription: String? {
      switch self {
      case .invalidURL:
         return "请求的网址错误"
      case .notHTTPResponse:
         return "响应不能转化为HTTPURLResponse"
      case .requestFailed(let errorMsg):
         return "请求失败：\(errorMsg)"
      }
   }
}

extension Notification.Name {
   static let loginSuccess = Notification.Name("loginSuccess")
   static let logoutSuccess = Notification.Name("logoutSuccess")
}