import bcrypt from "bcryptjs";
import { ObjectId } from "mongoose";
import { IUser, Role, Post, User, Avatar } from "../models";
import fs from "fs/promises";

export const createUser = async (user: IUser) => {
  // 비밀번호 암호화
  const hash = await bcrypt.hash(user.password, 10);
  const newAvatar = await Avatar.create({});
  // 사용자 역할 추가: 기본값은 "user"
  let userRole = null;
  if (user.role) {
    userRole = await Role.findById(user.role);
  } else {
    userRole = await Role.findOne({ name: "user" });
  }
  const newUser = new User({
    email: user.email,
    password: hash,
    role: userRole,
    isNew: true,
    avatar: newAvatar,
  });
  const retUser = await newUser.save();
  return retUser;
};

export const findUserByEmail = async (
  email: string,
  includePassword: boolean = false
) => {
  let user;
  if (includePassword) {
    user = await User.findOne({ email }).select("+password");
  } else {
    user = await User.findOne({ email });
  }
  return user;
};

export const findUserByPostId = async (postId: string) => {
  const post = await Post.findOne({ _id: postId }).populate("user");
  return post?.user;
};

export const getProfile = async (userId: string) => {
  const profile = await User.findById(userId).populate("avatar");
  return profile; //이름 수정
};

export const getUsers = async () => {
  const users = await User.find({});
  return users;
};

export const isUser = async (email: string) => {
  const user = await User.findOne({ email });
  if (user) {
    return true;
  } else {
    return false;
  }
};

export const isValidUserId = async (userId: string) => {
  const user = await User.findById(userId);
  if (user) {
    return true;
  } else {
    return false;
  }
};

export const postPicture = async (
  userId: ObjectId,
  nickname: string,
  originalfilename?: string | null,
  newfilename?: string,
  picturepath?: string
) => {
  const profile = await User.findById(userId);

  if (!(profile?.avatar === undefined)) {
    if (originalfilename === null) {
      await Avatar.findByIdAndUpdate(profile.avatar._id, {
        nickname: nickname,
      });
    } else if (nickname === "") {
      await Avatar.findByIdAndUpdate(profile.avatar._id, {
        originalfilename: originalfilename,
        newfilename: newfilename,
        picturepath: picturepath,
      });
    } else {
      await Avatar.findByIdAndUpdate(profile.avatar._id, {
        originalfilename: originalfilename,
        newfilename: newfilename,
        picturepath: picturepath,
        nickname: nickname,
      });
    }
  }
};

export const deleteUser = async (userId: ObjectId) => {
  const user = await User.findById(userId);
  if (!(user?.avatar === undefined)) {
    const ref = await Avatar.findById(user.avatar._id);
    await fs.unlink("../travel/uploads/" + ref?.newfilename);
    await Avatar.deleteOne({ _id: user.avatar._id });
    await User.deleteOne({ _id: userId });
  }
};