backbone service for non restful api

Backbone.Service.js

Backbone.Service = function (options) {
  this.options = options || {};
  this.ctx = options.context || this;
  this.endpoints = this.parseEndpoints(options.endpoints);
  _(this.endpoints).each(this.createMethod, this);
};

Backbone.Service.prototype.parseEndpoints = function (endpoints) {
  return _(endpoints).map(function (value, key) {
    var endpoint = { name: key };
    if (_.isArray(value)) {
      endpoint.path = value[0];
      endpoint.method = value[1];
    }
    else {
      endpoint.path = value;
      endpoint.method = 'read';
    }
    return endpoint;
  });
};

Backbone.Service.prototype.createMethod = function (endpoint) {
  this[endpoint.name] = function (data, options) {
    var promise = new Promise(this.ctx);
    options = _.extend(this.createOptions(promise, endpoint), options);
    Backbone.sync(endpoint.method, data, options);
    return promise;
  }
};

Backbone.Service.prototype.createOptions = function (promise, endpoint) {
  return {
    url: this.options.url + endpoint.path,
    success: function (resp, status, xhr) {
      promise.resolve();
    },
    error: function () {
      promise.reject();
    }
  };
};

// example usage
var endpoints = {
  ping: '/ping',
  move: '/move',
  pass: '/pass',
  resign: '/resign'
};

var service = new Backbone.Service({url: "http://localhost:5000", endpoints: endpoints});

service.ping().then(function () {
  console.log('success');
}, function () {
  console.log('error');
});

service.resign();