(function () {
    'use strict';

    var serviceId = 'myFormsAdminDataContext';
    angular.module('myformsAdmin').factory(serviceId, ['$q', '$http', 'myFormsAdminConfig', datacontext]);

    function datacontext($q, $http, config) {

        var service = {
            getFormTemplate: getFormTemplate,
            getTemplatesCreatedByMe: getTemplatesCreatedByMe,
            editFormTemplate: editFormTemplate,
            deleteFormTemplate: deleteFormTemplate,
            cloneFormTemplate: cloneFormTemplate,
            createFormTemplate: createFormTemplate,
            publishFormTemplate: publishFormTemplate,
            changeAvailabilityFormTemplate: changeAvailabilityFormTemplate,
            retireFormTemplate: retireFormTemplate,
            isDataIdentifierUnique: isDataIdentifierUnique,
            getTemplatesICanManage: getTemplatesICanManage,
            getActivityEntries: getActivityEntries,
            allocateIndividuals: allocateIndividuals,
            getDefaultActivities: getDefaultActivities,
            saveActivityLibrary: saveActivityLibrary,
            getActivityLibraryIdsForOrg: getActivityLibraryIdsForOrg
        };

        return service;

        function handleError(response) {

            // The API response from the server should be returned in a
            // nomralized format. However, if the request was not handled by the
            // server (or what not handles properly - ex. server error), then we
            // may have to normalize it on our end, as best we can.
            if (
                !angular.isObject(response.data) ||
                !response.data.message
                ) {

                return ($q.reject("An unknown error occurred."));
            }

            // Otherwise, use expected error message.
            return ($q.reject(response.data.message));
        }


        // I transform the successful response, unwrapping the application data
        // from the API response payload.
        function handleSuccess(response) {
            return (response.data);
        }

        //check if a dataidentifier is unique
        function isDataIdentifierUnique(value) {
            var request = $http({
                method: "get",
                url: config.formDataIdentifierRemoteServiceUrl + 'unique/' + value
            });

            return (request.then(handleSuccess, handleError));
        }
        

        //get a specific form template
        function getFormTemplate(formTemplateId) {
            var request = $http({
                method: "get",
                url: config.formTemplateRemoteServiceUrl + formTemplateId
            });

            return (request.then(handleSuccess, handleError));
        }

        //get all form templates i created
        function getTemplatesCreatedByMe() {
            var request = $http({
                method: "get",
                url: config.formTemplateManagementRemoteServiceUrl
            });

            return (request.then(handleSuccess, handleError));
        }

        //get available templates I can manage (I created or i am an admin in the org they are available for)
        function getTemplatesICanManage() {
            var request = $http({
                method: "get",
                url: config.formTemplateManagementRemoteServiceUrl + 'allavailable',
            });

            return (request.then(handleSuccess, handleError));
        }

        //Get the system default activity templates
        function getDefaultActivities() {
            var request = $http({
                method: "get",
                url: config.formTemplateManagementRemoteServiceUrl + 'activities/systemdefaults',
            });

            return (request.then(handleSuccess, handleError));
        }
        
        //edit an existing form template
        function editFormTemplate(formTemplateId,model) {
            var request = $http({
                method: "put",
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId,
                data:model
            });

            return (request.then(handleSuccess, handleError));
        }

        //delete a form template
        function deleteFormTemplate(formTemplateId) {
            var request = $http({
                method: "delete",
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId
            });

            return (request.then(handleSuccess, handleError));
        }

        //clone a form template
        function cloneFormTemplate(formTemplateId) {
            var request = $http({
                method: "get",
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId+'/clone'
            });

            return (request.then(handleSuccess, handleError));
        }

        //create a new form template
        function createFormTemplate(model) {
            var request = $http({
                method: "post",
                url: config.formTemplateManagementRemoteServiceUrl,
                data: model
            });

             return (request.then(handleSuccess, handleError));
        }

        //publish a form template
        function publishFormTemplate(formTemplateId,data) {
            var request = $http({
                method: "post",
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId + '/publish',
                data:data
            });

            return (request.then(handleSuccess, handleError));
        }

        //change the availability dates for a form template
        function changeAvailabilityFormTemplate(formTemplateId, data) {
            var request = $http({
                method: "post",
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId + '/changeavailability',
                data: data
            });

            return (request.then(handleSuccess, handleError));
        }

        //retire / withdraw a form template
        function retireFormTemplate(formTemplateId) {
            var request = $http({
                method: "get",
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId + '/retire'
            });
            return (request.then(handleSuccess, handleError));
        }

        function getActivityEntries(activityFormId, userId) {
            var request = $http({
                method: "get",
                url: config.formRemoteServiceUrl + 'activities/' + activityFormId + '/entries/user/' + userId
            });

            return (request.then(handleSuccess, handleError));
        }

        function allocateIndividuals(formTemplateId, userIds, availableFrom, availableTo) {
            var request = $http({
                method: "post",
                data: {
                    userIds: userIds,
                    formTemplateId: formTemplateId,
                    availableFrom: availableFrom,
                    availableTo: availableTo
                },
                url: config.formTemplateManagementRemoteServiceUrl + formTemplateId + '/individualAllocations'
            });

            return (request.then(handleSuccess, handleError));
        }

        function saveActivityLibrary(activityIds) {
            var request = $http({
                method: "post",
                data: activityIds,
                url: config.formTemplateManagementRemoteServiceUrl + 'activitylibrary' 
            });

            return (request.then(handleSuccess, handleError));
        }

        function getActivityLibraryIdsForOrg() {
            var request = $http({
                method: "get",
                url: config.formTemplateManagementRemoteServiceUrl + 'activitylibrary'
            });

            return (request.then(handleSuccess, handleError));
        }
        
    }
})();