Tiny Neo4j angular service

config.js

'use strict';

// Neo4j configuration
app.constant('NEO4J_USER', 'neo4j');
app.constant('NEO4J_PASSWORD', 'admin');
app.constant('NEO4J_URL', 'http://localhost:7474/db/data/transaction/commit');

neo4j.js

'use strict';

/**
 * Neo4j service.
 */
app.service('Neo4j', ['$http', '$q', 'NEO4J_URL', 'NEO4J_USER', 'NEO4J_PASSWORD', function ($http, $q, NEO4J_URL, NEO4J_USER, NEO4J_PASSWORD) {

    /**
     * Execute a cypher query on Neo4j.
     *
     * @param query Cypher query
     * @param params Params of the cypher query
     * @returns An array that correspond to the result of the query. Each element must be called by their name.
     */
    this.cypher = function (query, params) {
        var request = {
            method: 'POST',
            url: NEO4J_URL,
            headers: {
                'Authorization': 'Basic ' + btoa(NEO4J_USER + ':' + NEO4J_PASSWORD),
                'Accept': 'application/json',
                'Content-type': 'application/json; charset=utf-8'
            },
            data: {
                "statements": [
                    {
                        "statement": query,
                        "parameters" : params,
                        "resultDataContents": ["row"],
                        "includeStats": false
                    }
                ]
            }
        };
        var deferred = $q.defer();
        $http(request)
            .success(function (body, status, headers, config) {

                // If there is some errors we throw an exception
                if(body.errors.length > 0) {
                    var error = '';
                    body.errors.forEach(function (data, index) {
                        error += '[' + data.code + ']:' +  data.message;
                        error += '\n';
                    });
                    throw new Error(error);
                }

                // Construct the result
                var result = [];
                body.results[0].data.forEach(function (line, index) {
                    var item = {};
                    body.results[0].columns.forEach(function (col, index) {
                        item[col] = line.row[index];
                    });
                    result.push(item);
                    deferred.resolve(result);
                });
                return result;

            })
            .error(function (data, status, headers, config) {
                throw new Error('Bad return value (' + status + ') for REST API. \n\nRequest :' + JSON.stringify(request) + '\n\nResponse :' + JSON.stringify(data));
            })
        return deferred.promise;
    };

}]);