var mysql = require('mysql');
let config = require('./config.js');

module.exports = {
    /**
     * Pool instance
     */
    pool: null,

    /**
     * Start database pool
     */
    init: function() {
        this.pool = mysql.createPool(config.mysql);

        this.pool.getConnection(function(error, connection) {
            if (error) {
                throw new Error('Can\'t connect to database: ' + error.code);
            } else if (config.app.debug) {
                console.log('Database connection stablished');
            }
        });
    },

    /**
     * Set test environment mail.
     */
    testEmail: function() {
        this.pool.query('SELECT fakeEmail as email FROM vn.config', function(error, qryRs) {
            config.smtp.testEmail = qryRs[0].email;
        });
    }
};