(function () {
    'use strict';
    //service that handles uploading of files and images
    var serviceId = 'myFormsFileUpload';
    angular.module('myformsAdmin').factory(serviceId, ['config', '$q', 'Upload', myFormsFileUpload]);

    function myFormsFileUpload(config, $q, Upload) {
        var service = {
            uploadImage: uploadImage
        };

        return service;

        //upload an image (to Cloudinary)
        function uploadImage(obj, file, success, progress, error, uploadPath) {
            var e = file.$error;
            var data = {
                upload_preset: config.cloudinaryUploadPreset,
                tags: 'myforms'
            };
            var upload = Upload.upload({
                url: config.cloudinaryApiBaseUrl + config.cloudinaryName + uploadPath,
                fields: data,
                file: file
            });

            upload.progress(function (evt) {
                // Math.min is to fix IE which reports 200% sometimes
                file.progress = Math.min(100, parseInt(100.0 * evt.loaded / evt.total));
            });

            return upload.then(function (response) {
                success(obj, response.data);
                return response.data;

            }, function (response) {
                if (response.status > 0) {
                    var errorMsg = response.status + ': ' + response.data;
                    return error();
                }
            });
        }
    }
})();