(function () {
    'use strict';
    angular.module('saz')
        .factory('unitAssignment', unitAssignment);

    unitAssignment.$inject = ['$http', '$q', 'ApiBatch', '_'];

    function unitAssignment($http, $q, ApiBatch, _) {
        var infoCache = {};

        return {
            getUnitAssignmentInfo: getUnitAssignmentInfo,
            updateMultipleScienceIndividualAssignment: updateMultipleScienceIndividualAssignment,
            getStudentResourceLimit: getStudentResourceLimit
        };

        function getUnitAssignmentInfo(unitId) {
            if (infoCache[unitId]) {
                return $q(function (resolve, reject) {
                    resolve(infoCache[unitId]);
                });
            } else {
                return $http.get('/api/science/unit/' + unitId)
                    .then(function (response) {
                        infoCache[unitId] = response;
                        return response;
                    });
            }
        }

        function updateMultipleScienceIndividualAssignment(studentIds, formData) {
            return $http.put(
                '/api/assignments/science/student-custom-science-assignment?student_ids=' + studentIds.join(','),
                formData);
        }

        function getStudentResourceLimit(studentIDsAsDelimitedString) {
            return $http.get("/api/resources/getAssignedResourceCount/" + studentIDsAsDelimitedString);
        }
    }
}());