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| var fs = require('fs'),
p = require('path'),
req = require('bagofrequest'),
xml2js = require('xml2js'),
url = require('url'),
util = require('util'),
validator = require('./validator');
/**
* class Eggtart
*
* @param {String} username: Delicious account username
* @param {String} password: Delicious account password
* @param {Object} opts: optional
* - version: API version, default: v1
*/
function Eggtart(username, password, opts) {
opts = opts || {};
this.version = opts.version || 'v1';
this.wait = opts.wait || 1000; // mandatory wait to avoid forced throttling
this.url = util.format('https://%s:%s@api.delicious.com/%s/',
username,
password,
this.version);
this._init();
}
// initialises methods and sub methods based on API configuration
Eggtart.prototype._init = function () {
var file = p.join(__dirname, '..', 'conf', this.version + '.json'),
config = JSON.parse(fs.readFileSync(file)),
self = this;
Object.keys(config).forEach(function (method) {
var subMethods = {};
Object.keys(config[method]).forEach(function (subMethod) {
subMethods[subMethod] = function (args, cb) {
if (!cb) {
cb = args;
args = {};
}
var endpoint = config[method][subMethod].endpoint,
rules = config[method][subMethod].args;
validator.validate(rules, args, function (err) {
if (err) {
cb(err);
} else {
self._request(endpoint, args, cb);
}
});
};
});
Eggtart.prototype[method] = function () {
return subMethods;
};
});
};
// send request to Delicious
Eggtart.prototype._request = function (endpoint, params, cb) {
var parser = new xml2js.Parser(),
self = this;
function _success(result, cb) {
parser.parseString(result.body, cb);
}
function _error(result, cb) {
parser.parseString(result.body, function (err, result) {
cb(new Error(result.result.$.code));
});
}
var opts = {
queryStrings: params,
handlers: {
200: _success,
401: _error, // access denied
500: _error, // throttled
999: _error // throttled
}
};
// mandatory wait to avoid forced throttling
setTimeout(function () {
req.request('get', self.url + endpoint, opts, cb);
}, this.wait);
};
module.exports = Eggtart;
|