92 lines
2.8 KiB
JavaScript
92 lines
2.8 KiB
JavaScript
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/* jshint node:true */
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'use strict';
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exports = module.exports = {
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GroupError: GroupError,
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create: create,
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remove: remove,
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get: get
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};
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var assert = require('assert'),
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DatabaseError = require('./databaseerror.js'),
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uuid = require('node-uuid'),
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_ = require('underscore');
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// http://dustinsenos.com/articles/customErrorsInNode
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// http://code.google.com/p/v8/wiki/JavaScriptStackTraceApi
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function GroupError(reason, errorOrMessage) {
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assert.strictEqual(typeof reason, 'string');
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assert(errorOrMessage instanceof Error || typeof errorOrMessage === 'string' || typeof errorOrMessage === 'undefined');
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Error.call(this);
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Error.captureStackTrace(this, this.constructor);
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this.name = this.constructor.name;
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this.reason = reason;
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if (typeof errorOrMessage === 'undefined') {
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this.message = reason;
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} else if (typeof errorOrMessage === 'string') {
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this.message = errorOrMessage;
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} else {
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this.message = 'Internal error';
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this.nestedError = errorOrMessage;
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}
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}
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util.inherits(GroupError, Error);
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GroupError.INTERNAL_ERROR = 'Internal Error';
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GroupError.ALREADY_EXISTS = 'Already Exists';
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GroupError.NOT_FOUND = 'Not Found';
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GroupError.BAD_NAME = 'Bad name';
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function validateGroupname(name) {
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assert.strictEqual(typeof name, 'string');
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if (name.length <= 2) return new GroupError(GroupError.BAD_NAME, 'name must be atleast 3 chars');
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if (name.length > 256) return new GroupError(GroupError.BAD_NAME, 'name too long');
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return null;
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}
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function create(name, callback) {
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assert.strictEqual(typeof name, 'string');
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assert.strictEqual(typeof callback, 'function');
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var error = validateGroupname(name);
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if (error) return callback(error);
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groupdb.add(uuid.v4(), name, function (error) {
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if (error && error.reason === DatabaseError.ALREADY_EXISTS) return callback(new GroupError(UserError.ALREADY_EXISTS));
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if (error) return callback(new UserError(GroupError.INTERNAL_ERROR, error));
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callback(null);
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});
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}
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function remove(id, callback) {
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assert.strictEqual(typeof id, 'string');
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assert.strictEqual(typeof callback, 'function');
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groupdb.del(id, function (error) {
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if (error && error.reason === DatabaseError.NOT_FOUND) return callback(new UserError(UserError.NOT_FOUND));
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if (error) return callback(new UserError(UserError.INTERNAL_ERROR, error));
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callback(null);
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});
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}
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function get(id, callback) {
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assert.strictEqual(typeof id, 'string');
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assert.strictEqual(typeof callback, 'function');
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groupdb.get(id, function (error, result) {
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if (error && error.reason === DatabaseError.NOT_FOUND) return callback(new UserError(UserError.NOT_FOUND));
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if (error) return callback(new UserError(UserError.INTERNAL_ERROR, error));
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return callback(null, result);
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});
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}
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