A Twitch.tv viewer reward and games system.
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/**
* api:
* DB([required options])
* required options - {host, user, password, database}
*
* example:
* var db = require('./lib/plugins/db.js')({
* host : 'localhost',
* user : 'user',
* password : 'password',
* database : 'database',
* });
*/
var mysql = require('mysql'),
file = require('fs');
//-------- Construct ---------
function DB(options) {
var __self = this;
// config
__self.host = options.host || '';
__self.user = options.user || '';
__self.password = options.password || '';
__self.database = options.database || '';
}
//-------- Methods ---------
DB.prototype.start = function() {
var __self = this, commands ='', viewers = '', scores = '';
// table structure for table commands
commands += 'CREATE TABLE IF NOT EXISTS `commands` (';
commands += '`id` int(11) NOT NULL AUTO_INCREMENT,';
commands += '`command` text COLLATE utf8_unicode_ci NOT NULL,';
commands += '`text` longtext COLLATE utf8_unicode_ci NOT NULL,';
commands += '`auth` int(11) NOT NULL DEFAULT \'1\',';
commands += 'PRIMARY KEY (`id`)';
commands += ') ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=1';
// table structure for table viewers
viewers += 'CREATE TABLE IF NOT EXISTS `viewers` (';
viewers += '`user` varchar(64) COLLATE utf8_unicode_ci NOT NULL,';
viewers += '`points` int(11) NOT NULL,';
viewers += 'PRIMARY KEY (`user`)';
viewers += ') ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci';
// table structure for table highscores
scores += 'CREATE TABLE IF NOT EXISTS `highscores` (';
scores += '`name` varchar(64) COLLATE utf8_unicode_ci NOT NULL,';
scores += '`user` varchar(64) COLLATE utf8_unicode_ci,';
scores += '`value` int(11) NOT NULL,';
scores += '`date` timestamp ON UPDATE current_timestamp,';
scores += 'PRIMARY KEY (`name`)';
scores += ') ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;';
// execute sql, create tables if they don't exist
__self.execute(commands + '; ' + viewers + '; ' + scores, function(){});
};
DB.prototype.execute = function(sql, callback) {
var __self = this,
connection = mysql.createConnection({
host : __self.host,
user : __self.user,
password : __self.password,
database : __self.database,
multipleStatements : true
});
// execute query
connection.query(sql, function (err, rows, fields) {
// error handling
if (err) {
file.appendFile('./../logs/error-log.txt', err.message + '\r\n' + err.stack + '\r\n', function() {});
return;
}
// close connection
connection.end();
// return results
callback(rows, fields);
});
};
module.exports = function (options) {
return new DB(options);
};