#!/usr/bin/env node

var cli = require('cli'),
    options = cli.parse({
        leave: ['l', 'Period of time', 'string', '1d'],
        host: ['h', 'MySQL host', 'string', 'mysql'],
        port: ['p', 'MySQL port', 'string', '3306'],
	    user: ['u', 'MySQL user', 'string', 'root'],
	    password: ['pw', 'MySQL password', 'string', '235r2342gtfsw'],
	    database: ['d', 'MySQL database', 'string', 'statsd_db']
    })
;

var mysql = require('mysql');
var connection = mysql.createConnection({
    host: options.host,
    port: options.port,
    user: options.user,
    password: options.password,
    database: options.database,
    multipleStatements: true
});

var moment = require('moment');
var n = parseInt(options.leave, 10);
var from = moment().subtract(n, options.leave.replace(n, '')).format('X');
var to = moment().format('X');

var mysql_tables = ['gauges_statistics', 'counters_statistics', 'timers_statistics', 'sets_statistics'];
for (var i = 0; i < mysql_tables.length; i++) {
    console.log('DELETE FROM '+mysql_tables[i]+' WHERE timestamp <= '+from+' OR timestamp >= '+to+';');

    connection.query('DELETE FROM '+mysql_tables[i]+' WHERE timestamp <= '+from+' OR timestamp >= '+to+';', function (err, rows, fields) {
        if (err) {
            connection.end();
            console.log(err);
            throw err;
        }
        for (var i = 0; i <= rows.length - 1; i++) {
            console.log(rows[i]);
        }
    });
}
connection.end();