angular-cached-resource/lib/read_array_cache.js

An AngularJS module to interact with RESTful resources, even when browser is offline

// Generated by CoffeeScript 1.7.1
var modifyObjectInPlace, processReadArgs, readArrayCache,
  __slice = [].slice;

processReadArgs = require('./process_read_args');

modifyObjectInPlace = require('./modify_object_in_place');

module.exports = readArrayCache = function($q, providerParams, name, CachedResource) {
  var ResourceCacheArrayEntry, ResourceCacheEntry, first;
  ResourceCacheEntry = require('./resource_cache_entry')(providerParams);
  ResourceCacheArrayEntry = require('./resource_cache_array_entry')(providerParams);
  first = function(array, params) {
    var found, item, itemParams, _i, _len;
    found = null;
    for (_i = 0, _len = array.length; _i < _len; _i++) {
      item = array[_i];
      itemParams = item.$params();
      if (Object.keys(params).every(function(key) {
        return itemParams[key] === params[key];
      })) {
        found = item;
        break;
      }
    }
    return found;
  };
  return function() {
    var arrayInstance, cacheArrayEntry, cacheDeferred, cacheInstanceEntry, cacheInstanceParams, httpDeferred, params, readHttp, _i, _len, _ref, _ref1;
    _ref = processReadArgs($q, arguments), params = _ref.params, cacheDeferred = _ref.deferred;
    httpDeferred = $q.defer();
    arrayInstance = new Array();
    arrayInstance.$promise = cacheDeferred.promise;
    arrayInstance.$httpPromise = httpDeferred.promise;
    cacheArrayEntry = new ResourceCacheArrayEntry(CachedResource.$key, params).load();
    arrayInstance.$httpPromise.then(function(instances) {
      return cacheArrayEntry.addInstances(instances, false);
    });
    readHttp = function() {
      var resource;
      resource = CachedResource.$resource[name](params);
      resource.$promise.then(function(response) {
        var newArrayInstance;
        newArrayInstance = new Array();
        response.map(function(resourceInstance) {
          var existingInstance;
          resourceInstance = new CachedResource(resourceInstance);
          existingInstance = first(arrayInstance, resourceInstance.$params());
          if (existingInstance) {
            modifyObjectInPlace(existingInstance, resourceInstance);
            return newArrayInstance.push(existingInstance);
          } else {
            return newArrayInstance.push(resourceInstance);
          }
        });
        arrayInstance.splice.apply(arrayInstance, [0, arrayInstance.length].concat(__slice.call(newArrayInstance)));
        if (!cacheArrayEntry.value) {
          cacheDeferred.resolve(arrayInstance);
        }
        return httpDeferred.resolve(arrayInstance);
      });
      return resource.$promise["catch"](function(error) {
        if (!cacheArrayEntry.value) {
          cacheDeferred.reject(error);
        }
        return httpDeferred.reject(error);
      });
    };
    CachedResource.$writes.flush(readHttp);
    if (cacheArrayEntry.value) {
      _ref1 = cacheArrayEntry.value;
      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
        cacheInstanceParams = _ref1[_i];
        cacheInstanceEntry = new ResourceCacheEntry(CachedResource.$key, cacheInstanceParams).load();
        arrayInstance.push(new CachedResource(cacheInstanceEntry.value));
      }
      cacheDeferred.resolve(arrayInstance);
    }
    return arrayInstance;
  };
};