const { Sequelize, DataTypes } = require('sequelize');

class Table {
	constructor (model) {
		this.model = model;
	}
	
	promiseMode () {
		return new TablePromise(this.model);
	}
	
	get (cb, condition = null) {
		this.model.findAll({...(!condition ? {} : condition), raw: true })
		.then(data => cb(null, data)).catch(err => cb(err, null));
	}
	
	add (item, cb) {
		this.model.create(item).then(i => cb(null, i))
		.catch(err => cb(err, null));
	}
	
	remove (condition, cb) {
		this.model.destroy(condition).then(i => cb(null, i))
		.catch(err => cb(err, null));
	}
	
	edit (data, condition, cb) {
		this.model.update(data, condition).then(i => cb(null, i))
		.catch(err => cb(err, null));
	}
}

class TablePromise extends Table {
	async get (condition) {
		return await this.model.findAll({...(!condition ? {} : condition), raw: true });
	}
	
	async add (item) {
		//setTimeout(() => this.model.findAll(), 0);
		return await this.model.create(item);
	}
	
	async remove (condition) {
		return await this.model.destroy(condition);
	}
	
	async edit (data, condition) {
		return await this.model.update(data, condition);
	}
}

class Database {
	constructor (
		address,
		port,
		username,
		password,
		database
	) {
		this.sequelize = new Sequelize(`postgres://${username}:${password}@${address}:${port}/${database}`);
		this.sequelize.authenticate().then(() => {
			this.authors = new Table(
				this.sequelize.define('authors', {
					id: {
						type: DataTypes.INTEGER,
						primaryKey: true,
						autoIncrement: true,
						allowNull: false
					},
					name: {
						type: DataTypes.TEXT,
						allowNull: false
					},
					time : {
						type: DataTypes.INTEGER,
						allowNull: false
					}
				}, { 
					freezeTableName: true,
					timestamps: false
				})
			);
			this.muzic = new Table(
				this.sequelize.define('muzic', {
					id: {
						type: DataTypes.INTEGER,
						primaryKey: true,
						autoIncrement: true,
						allowNull: false
					},
					name: {
						type: DataTypes.TEXT,
						allowNull: false
					},
					author_id: {
						type: DataTypes.INTEGER,
						allowNull: false
					},
					data: {
						type: DataTypes.BLOB('long')
					},
					time : {
						type: DataTypes.INTEGER,
						allowNull: false
					}
				}, { 
					freezeTableName: true,
					timestamps: false
				})
			);
			console.log('Database successful connected!')
		}, (err) => {
			throw err;
		})
	}
}

module.exports = { Database }