import mysql from 'mysql2/promise'

export function resolveMysqlCredentials(config = {}) {
    const user = process.env.user
    const password = process.env.mysql_pass
    if(!user || !password) {
        throw new Error('Missing MySQL credentials: set user and mysql_pass in environment')
    }
    return({
        socketPath: config.socketPath,
        host: config.host,
        port: config.port,
        user,
        password,
        database: config.database ?? 'p42GUI',
        waitForConnections: true,
        connectionLimit: config.connectionLimit ?? 5,
        queueLimit: 0,
    })
}

export async function createMysqlPool(config) {
    return(await mysql.createPool(resolveMysqlCredentials(config)))
}

export async function mysqlExecute(pool, query, values = []) {
    const [rows] = await pool.execute(query, values)
    return(rows)
}