import { Database } from 'sqlite3'
import User from '../../models/User'
import {v4} from 'uuid'
import FolderService from '../Folder/service'

export default class UserService {
	private readonly db = new Database(process.env.DATABASE_PATH)
	private readonly folderService = new FolderService()

	async getByUsername(username: string): Promise<User> {
		return new Promise((resolve, reject) => {
			const statement = this.db.prepare(`
				SELECT *
					FROM users
					WHERE name = (?)
			`)

			statement.get(username, (err, result) => {
				if (err) {
					reject(err)
					return
				}
				if (result) {
					resolve(User.resolve(result))
					return
				}
				resolve(null)
			})
		})
	}

	async createUser(username: string): Promise<User> {
		const now = new Date()
		const userFolder = await this.folderService.create(username)
		return new Promise((resolve, reject) => {
			const userId = v4()
			const userStatement = this.db.prepare(`
				INSERT INTO users (
					id,
					name,
					root_folder_id,
					created_at,
					updated_at,
					deleted_at
				) VALUES (?, ?, ?, ?, ?, NULL)
			`)

			const createdAt = now.toISOString()
			const updatedAt = now.toISOString()
			const rootFolderId = userFolder.id
			userStatement.run(userId, username, rootFolderId, createdAt, updatedAt, (err) => {
				if (err) {
					reject(err)
					return
				}
				resolve(User.resolve({
					'id': userId,
					'name': username,
					'root_folder_id': rootFolderId,
					'created_at': now,
					'updated_at': now,
					'deleted_at': null,
				}))
			})
		})
	}
}