//
//  UserManager.swift
//  IOS_study
//
//  Created by CC-star on 2025/7/14.
//

import Foundation
import LeanCloud

final class UserManager {
   static var shared = UserManager()
   private init() {}
   private let className = "DBUser"
   
   func findUserByREST() async throws -> DBUser {
      let query = LCQuery(className: className)
      query.whereKey("id", .equalTo(AuthManager.shared.getUserID()))
      guard let objectId = (try await query.getFirst()).objectId?.value else { throw UserError.objectIdNotFound }
      let urlStr = "\(kServerURLStr)/1.1/classes/\(className)/\(objectId)"
      return try await RESTManager.shared.findOne(form: urlStr)
   }
   
   func create(user: LCUser) async throws {
      let dbUser = LCObject(className: className)
      try dbUser.set(DBUser.CodingKeys.id.rawValue, value: user.objectId)
      var nickName = ""
      if let objectId = user.objectId?.value {
         nickName = objectId.suffix(4).uppercased()//取后四位，并字母大写
      } else {
         nickName = String.randomString(4)
      }
      try dbUser.set(DBUser.CodingKeys.nickName.rawValue, value: "数据猫用户\(nickName)")
      try await dbUser.save()
   }
   
   func update(user: DBUser) async throws {
      let query = LCQuery(className: className)
      query.whereKey("id", .equalTo(AuthManager.shared.getUserID()))
      let userObject = try await query.getFirst()
      
      try userObject.set(DBUser.CodingKeys.cName.rawValue, value: user.cName)
      try userObject.set(DBUser.CodingKeys.cLogoURLStr.rawValue, value: user.cLogoURLStr)
      try userObject.set(DBUser.CodingKeys.cImageURLStrs.rawValue, value: user.cImageURLStrs)
      try userObject.set(DBUser.CodingKeys.cAboutUS.rawValue, value: user.cAboutUS)
      try userObject.set(DBUser.CodingKeys.cProvince.rawValue, value: user.cProvince)
      try userObject.set(DBUser.CodingKeys.cCity.rawValue, value: user.cCity)
      
      try await userObject.save()
   }
   
   func setTo(filed: String, _ value: Bool) async throws {
      let query = LCQuery(className: className)
      query.whereKey("id", .equalTo(AuthManager.shared.getUserID()))
      let userObject = try await query.getFirst()
      try userObject.set(filed, value: value)
      try await userObject.save()
   }
   
   func removeUser(id: String) async {
      let query = LCQuery(className: className)
      query.whereKey("id", .equalTo(id))
      guard let userObject = try? await query.getFirst() else { return }
      try? await userObject.delete()
   }
}