import { BadRequestException, Injectable } from "@nestjs/common";
import slugify from "slugify";
import { In, Not } from "typeorm";

// import { roles } from "../../../../database/seeders/role.seeder";
import { CommonMessage, UserMessage } from "../../../common/enums/message.enum";
import { CompleteRegistrationDto } from "../../auth/DTO/complete-register.dto";
import { CheckValidityDTO } from "../DTO/check-validity.dto";
import { UpdateProfileDto } from "../DTO/update-profile.dto";
import { CreateUserGroupDto } from "../DTO/user-group.dto";
import { User } from "../entities/user.entity";
import { RoleEnum } from "../enums/role.enum";
import { ValidityType } from "../enums/validity-type.enum";
import { RoleRepository } from "../repositories/roles.repository";
import { UserGroupRepository } from "../repositories/user-group.repository";
import { UserRepository } from "../repositories/users.repository";

@Injectable()
export class UsersService {
  private readonly userSelect = {
    id: true,
    phone: true,
    email: true,
    userName: true,
    firstName: true,
    lastName: true,
    nationalCode: true,
    birthDate: true,
    role: {
      id: true,
      name: true,
    },
  };
  constructor(
    private userRepository: UserRepository,
    private roleRepository: RoleRepository,
    private userGroupRepository: UserGroupRepository,
  ) {}

  /************************************************************ */

  async findOneById(id: string) {
    const user = await this.userRepository.findOneBy({ id });
    if (!user) throw new BadRequestException(UserMessage.USER_NOT_FOUND);
    return { user };
  }

  /************************************************************ */

  async getMe(userId: string) {
    const user = await this.userRepository.findOne({ where: { id: userId }, select: this.userSelect });
    if (!user) throw new BadRequestException(UserMessage.USER_NOT_FOUND);
    return { user };
  }

  /************************************************************ */

  async updateProfile(userId: string, updateProfileDto: UpdateProfileDto) {
    const { firstName, lastName, birthDate } = updateProfileDto;

    if (updateProfileDto.userName) {
      updateProfileDto.userName = slugify(updateProfileDto.userName, { lower: true, trim: true });
      const existUserName = await this.userRepository.findOneBy({ userName: updateProfileDto.userName, id: Not(userId) });
      if (existUserName) throw new BadRequestException(UserMessage.USERNAME_EXIST);
    }
    const user = await this.userRepository.findOneBy({ id: userId });
    if (!user) throw new BadRequestException(UserMessage.USER_NOT_FOUND);

    const { userName } = updateProfileDto;
    if (userName) user.userName = userName;
    if (firstName) user.firstName = firstName;
    if (lastName) user.lastName = lastName;
    if (birthDate) user.birthDate = birthDate;

    await this.userRepository.save(user);
    return {
      message: CommonMessage.UPDATE_SUCCESS,
    };
  }
  /************************************************************ */

  async findOneWithEmail(email: string): Promise<User | null> {
    const user = await this.userRepository.findOneWithEmail(email);
    return user;
  }
  /************************************************************ */

  async findOneWithPhone(phone: string): Promise<User | null> {
    const user = await this.userRepository.findOneWithPhone(phone);
    return user;
  }

  /************************************************************ */

  async createUser(registerDto: CompleteRegistrationDto, hashedPassword: string): Promise<User> {
    // const existEmail = await this.userRepository.findOneWithEmail(registerDto.email);
    // if (existEmail) throw new BadRequestException(UserMessage.EMAIL_EXIST);

    const role = await this.roleRepository.findOneBy({ name: RoleEnum.USER });
    if (!role) throw new BadRequestException(UserMessage.ROLE_NOT_FOUND);

    const user = this.userRepository.create({ ...registerDto, password: hashedPassword, role });
    return await this.userRepository.save(user);
  }
  /************************************************************ */

  async checkValidity(checkDto: CheckValidityDTO, userId: string) {
    const { type } = checkDto;
    if (type === ValidityType.USERNAME) checkDto.value = slugify(checkDto.value, { lower: true, trim: true });

    const user = await this.userRepository.findOneBy({ [type]: checkDto.value, id: Not(userId) });
    if (user) throw new BadRequestException(UserMessage.USER_EXISTS);

    return { message: CommonMessage.VALID_FOR_CHOOSE };
  }

  async createUserGroup(createUserGroupDto: CreateUserGroupDto) {
    const users = await this.userRepository.find({ where: { id: In(createUserGroupDto.userIds) } });
    const userGroup = this.userGroupRepository.create({
      ...createUserGroupDto,
      users,
    });
    await this.userGroupRepository.save(userGroup);
    return {
      message: UserMessage.USER_GROUP_CREATED,
    };
  }
  ///****************************************************** */

  async getUserGroups() {
    const usersGroup = await this.userGroupRepository.find({ relations: { users: true } });
    return {
      usersGroup,
    };
  }

  ///****************************************************** */

  async getUserGroupById(id: string) {
    const userGroup = await this.userGroupRepository.findGroupById(id);
    if (!userGroup) throw new BadRequestException(UserMessage.USER_GROUP_NOT_FOUND);
    return {
      userGroup,
    };
  }
}