Custom JSData adapter

fakeAdapter.js

var store = new JSData.DS();
 
function FakeAdapter() {
  var data = {};
  
  function addMetaForResource(resource) {
    if (resource.name !== data) {
      data[resource.name] = {};
      data[resource.name].curId = 1;
      data[resource.name].index = {};
      data[resource.name].collection = [];
    }
  }
 
  this.create = function (resource, attrs, options) {
    addMetaForResource(resource);
    if (attrs[resource.idAttribute] && data[resource.name].index[attrs[resource.idAttribute]] && options.upsert) {
      return this.update(resource, attrs[resource.idAttribute], attrs, options);
    } else {
      var id = data[resource.name].curId;
      data[resource.name].curId++;
      attrs[resource.idAttribute] = id;
      data[resource.name].index[id] = attrs;
      data[resource.name].collection.push(attrs);
      return new Promise(function (resolve, reject) {
        resolve(attrs);
      });
    }
  };
 
  this.find = function (resource, id, options) {
    addMetaForResource(resource);
    return new Promise(function (resolve, reject) {
      if (data[resource.name].index[id]) {
        resolve(data[resource.name].index[id]);
      } else {
        reject('Not Found!');
      }
    });
  };
 
  this.findAll = function (resource, params, options) {
    addMetaForResource(resource);
    return new Promise(function (resolve, reject) {
      resolve(store.defaults.defaultFilter(data[resource.name].collection, resource.name, params, options));
    });
  };
 
  this.update = function (resource, id, attrs, options) {
    addMetaForResource(resource);
    return this.find(resource, id, options).then(function (item) {
      JSData.DSUtils.deepMixIn(item, attrs);
      return item;
    });
  };
 
  this.updateAll = function (resource, params, attrs, options) {
    addMetaForResource(resource);
    return this.findAll(resource, params, options).then(function (items) {
      var tasks = [];
      JSData.DSUtils.forEach(items, function (item) {
        tasks.push(_this.update(resource, item[resource.idAttribute], attrs, options));
      });
      return Promise.all(tasks);
    });
  };
 
  this.destroy = function (resource, id, options) {
    addMetaForResource(resource);
    return this.find(resource, id, options).then(function (item) {
      JSData.DSUtils.remove(data[resource.name].collection, item);
      delete data[resource.name].index[id];
      return id;
    });
  };
 
  this.destroyAll = function (resource, params, options) {
    addMetaForResource(resource);
    var _this = this;
    return this.findAll(resource, params, options).then(function (items) {
      var tasks = [];
      JSData.DSUtils.forEach(items, function (item) {
        tasks.push(_this.destroy(resource, item[resource.idAttribute], options));
      });
      return Promise.all(tasks);
    });
  };
}
 
store.registerAdapter('fake', new FakeAdapter(), { default: true });