55 lines
1.7 KiB
JavaScript
55 lines
1.7 KiB
JavaScript
/* jslint node:true */
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'use strict';
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exports = module.exports = {
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get: get,
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getAll: getAll,
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set: set,
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_clear: clear
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};
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var assert = require('assert'),
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database = require('./database.js'),
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DatabaseError = require('./databaseerror');
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function get(key, callback) {
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assert.strictEqual(typeof key, 'string');
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assert.strictEqual(typeof callback, 'function');
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database.query('SELECT * FROM settings WHERE name = ?', [ key ], function (error, result) {
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if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
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if (result.length === 0) return callback(new DatabaseError(DatabaseError.NOT_FOUND));
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callback(null, result[0].value);
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});
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}
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function getAll(callback) {
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database.query('SELECT * FROM settings ORDER BY name', function (error, results) {
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if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
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callback(null, results);
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});
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}
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function set(key, value, callback) {
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assert.strictEqual(typeof key, 'string');
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assert(value === null || typeof value === 'string');
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assert.strictEqual(typeof callback, 'function');
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database.query('INSERT INTO settings (name, value) VALUES (?, ?) ON DUPLICATE KEY UPDATE value=VALUES(value)', [ key, value ], function (error) {
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if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error)); // don't rely on affectedRows here since it gives 2
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callback(null);
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});
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}
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function clear(callback) {
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database.query('DELETE FROM settings', function (error) {
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if (error) return callback(new DatabaseError(DatabaseError.INTERNAL_ERROR, error));
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callback(error);
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});
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}
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