SharePoint - Angular REST API base class for lists

sharepointRESTService.js

(function() {
    angular.module('myApp').factory('sharepointRESTService', sharepointRESTService)
    sharepointRESTService.$inject = ['$q', '$http', '$location'];

    function sharepointRESTService($q, $http, $location) {
        var factoryUtil = {};

        var domain_url = "https://company_name.sharepoint.com/sites/site_name";

        // HTTP GET
        factoryUtil.getListItems = function(list_name, filters) {
            var url = domain_url + "/_api/web/lists/GetByTitle('" + list_name + "')/Items?";

            if (!angular.isUndefined(filters)) {
                url += factoryUtil.build_filters(filters)
            }

            var deferred = $q.defer();
            $http({
                url: url,
                method: "GET",
                headers: {
                    "accept": "application/json;odata=verbose",
                    "content-Type": "application/json;odata=verbose"
                }
            }).success(function(result) {
                deferred.resolve(result.d.results);
            }).error(function(result, status) {
                deferred.reject({
                    error: result,
                    status: status
                });
            });
            return deferred.promise;
        };

        // HTTP Create
        factoryUtil.createListItem = function(list_name, data) {
            data.__metadata = {
                "type": factoryUtil.getListName(list_name)
            };
            var url = domain_url + "/_api/web/lists/getbytitle('" + list_name + "')/Items";
            var deferred = $q.defer();
            $http({
                url: url,
                method: "POST",
                headers: {
                    "accept": "application/json;odata=verbose",
                    "X-RequestDigest": activeUser.getFormDigestValue(),
                    "content-Type": "application/json;odata=verbose"
                },
                data: JSON.stringify(data)
            }).success(function(result) {
                deferred.resolve(result);
            }).error(function(result, status) {
                deferred.reject({
                    error: result,
                    status: status
                });
            });
            return deferred.promise;
        };

        // HTTP Update
        factoryUtil.updateListItem = function(list_name, list_id, data) {
            data.__metadata = {
                "type": factoryUtil.getListName(list_name)
            };
            var url = domain_url + "/_api/Web/Lists/getByTitle('" + list_name + "')/Items(" + list_id + ")";
            var deferred = $q.defer();
            $http({
                url: url,
                method: "POST",
                headers: {
                    "accept": "application/json;odata=verbose",
                    "X-RequestDigest": activeUser.getFormDigestValue(),
                    "content-Type": "application/json;odata=verbose",
                    "X-HTTP-Method": "MERGE",
                    "If-Match": "*"
                },
                data: data
            }).success(function(result) {
                deferred.resolve(result);
            }).error(function(result, status) {
                deferred.reject({
                    error: result,
                    status: status
                });
            });
            return deferred.promise;
        };

        // HTTP Delete
        factoryUtil.deleteListItem = function(list_name, list_id) {
            var url = domain_url + "/_api/Web/Lists/getByTitle('" + list_name + "')/Items(" + list_id + ")";
            var deferred = $q.defer();
            $http({
                url: url,
                method: "DELETE",
                headers: {
                    "accept": "application/json;odata=verbose",
                    "X-RequestDigest": activeUser.getFormDigestValue(),
                    "IF-MATCH": "*"
                }
            }).success(function(result) {
                deferred.resolve(result);
            }).error(function(result, status) {
                deferred.reject({
                    error: result,
                    status: status
                });
            });
            return deferred.promise;
        };

        // Generate List Name
        factoryUtil.getListName = function(name) {
            return "SP.Data." + name.charAt(0).toUpperCase() + name.replace('_', '_x005f_').replace(' ', '').slice(1) + "ListItem";
        };

        //////////////////
        // Build filter //
        //////////////////
        // var filter = {
        //     select: ['name', 'id'],
        //     expand: {
        //         'job_title': ['id', 'name'],
        //         'job_type': ['id', 'name'],
        //     },
        //     orderby: 'name desc',
        //     filter: {
        //         'is_approved': ['eq', 'Approved'],
        //         'status': ['lt', 'Open']
        //     },
        //     top : 5,
        //     skip : 5,
        // };
        factoryUtil.build_filters = function(filters) {
            var url_filter = [];
            url_filter[0] = []; // select
            url_filter[1] = []; // orderby
            url_filter[2] = []; // top
            url_filter[3] = []; // skip
            url_filter[4] = []; // filter And
            url_filter[5] = []; // expand
            url_filter[6] = []; // filter Or
            var url = [];
            if (!angular.isUndefined(filters.select)) {
                url_filter[0].push(filters.select.join());
            }
            if (!angular.isUndefined(filters.expand)) {
                angular.forEach(filters.expand, function(columns, field) {
                    angular.forEach(columns, function(value, key) {
                        url_filter[0].push(field + '/' + value);
                    });
                    url_filter[5].push(field);
                });
                url_filter[5] = '$expand=' + url_filter[5].join();
            }
            if (!angular.isUndefined(filters.orderby)) {
                url_filter[1] = '$orderby=' + filters.orderby;
            }
            if (!angular.isUndefined(filters.top)) {
                url_filter[2] = '$top=' + filters.top;
            }
            if (!angular.isUndefined(filters.skip)) {
                url_filter[3] = '$skip=' + filters.skip;
            }
            if (!angular.isUndefined(filters.filter)) {
                angular.forEach(filters.filter, function(value, field) {
                    url_filter[4].push('(' + field + ' ' + value[0] + ' \'' + value[1] + '\')');
                });
                url_filter[4] = '$filter=(' + url_filter[4].join(' and ') + ')';
            }
            if (!angular.isUndefined(filters.filterOr)) {
                angular.forEach(filters.filterOr, function(value, field) {
                    url_filter[6].push('(' + field + ' ' + value[0] + ' \'' + value[1] + '\')');
                });
                url_filter[6] = '$filter=(' + url_filter[6].join(' or ') + ')';
            }
            if (url_filter[0].length) url_filter[0] = '$select=' + url_filter[0].join();
            angular.forEach(url_filter, function(value, key) {
                if (url_filter[key].length) url.push(value);
            });
            return url.join('&');
        }
        return factoryUtil;
    }
})()