import { InternalService } from "@autoplex/microservice";
import { env, secret } from "@autoplex/utils";
import { createConnection, Connection } from "typeorm";
import * as entities from "./entities";

/**
 * A convenience database service
 */
export class Database extends InternalService
{
	/**
	 * The active database connection
	 */
	protected connection!: Connection;

	/**
	 * The name of the service
	 */
	public readonly NAME = "Database";

	/**
	 * Boot the database service
	 */
	public async boot() {
		let host     = env("DB_HOST");
		let port     = parseInt(env("DB_PORT"));
		let username = env("DB_USER");
		let password = await secret(env("DB_PASSWORD_FILE"));
		let database = env("DB_DATABASE");
		this.connection = await this.connectToDatabase(host, port, username, password, database);
	}

	/**
	 * Shutdown the database service
	 */
	public async shutdown() {
		await this.connection.close();
	}

	/**
	 * A convenience function to connect to the database
	 */
	private async connectToDatabase(host: string, port: number, username: string, password: string,
	                                database: string)
	{
		// Create the database connection
		return await createConnection({
			type       : "mysql",
			host       : host,
			port       : port,
			username   : username,
			password   : password,
			database   : database,
			// synchronize: process.env["NODE_ENV"] != "production",
			synchronize: true, // Seems stable enough for my liking
			entities   : Object.values(entities)
		});
	}
}