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path: root/catalog-ui/app/scripts/directives/download-artifact/download-artifact.ts
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/*-
 * ============LICENSE_START=======================================================
 * SDC
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */
/// <reference path="../../references"/>
module Sdc.Directives {
    'use strict';

    export class DOWNLOAD_CSS_CLASSES {
        static DOWNLOAD_ICON = "table-download-btn tosca";
        static LOADER_ICON = "tlv-loader small loader";
    }

    export interface IDownloadArtifactScope extends ng.IScope {
        $window:any;
        artifact: Models.ArtifactModel;
        component: Models.Components.Component;
        instance:boolean;
        download: Function;
        showLoader:boolean;
        updateDownloadIcon:Function;
    }

    export class DownloadArtifactDirective implements ng.IDirective {

        constructor(private $window:any,private cacheService:Services.CacheService, private EventListenerService:Services.EventListenerService, private fileUtils:Sdc.Utils.FileUtils) {}

        scope = {
            artifact: '=',
            component: '=',
            instance:'=',
            showLoader:'='
        };
        restrict = 'EA';

        link = (scope:IDownloadArtifactScope, element:any) => {
            scope.$window = this.$window;

            element.on("click", function() {
                scope.download(scope.artifact);
            });


            let initDownloadLoader = ()=>{
                //if the artifact is in a middle of download progress register form callBack & change icon from download to loader
                if(scope.showLoader &&  this.cacheService.get(scope.artifact.uniqueId)){
                    this.EventListenerService.registerObserverCallback(Utils.Constants.EVENTS.DOWNLOAD_ARTIFACT_FINISH_EVENT + scope.artifact.uniqueId, scope.updateDownloadIcon);
                    window.setTimeout(():void => {
                        if(this.cacheService.get(scope.artifact.uniqueId)){
                            element[0].className = DOWNLOAD_CSS_CLASSES.LOADER_ICON;
                        }
                    },1000);

                }
            };

            let setDownloadedFileLoader = ()=> {
                if(scope.showLoader){
                    //set in cache service thet the artifact is in download progress
                    this.cacheService.set(scope.artifact.uniqueId,true);
                    initDownloadLoader();
                }
            };

            let removeDownloadedFileLoader = ()=> {
                if (scope.showLoader) {
                    this.cacheService.set(scope.artifact.uniqueId, false);
                    this.EventListenerService.notifyObservers(Utils.Constants.EVENTS.DOWNLOAD_ARTIFACT_FINISH_EVENT + scope.artifact.uniqueId);
                }
            };


            //replace the loader to download icon
            scope.updateDownloadIcon = () =>{
                element[0].className =  DOWNLOAD_CSS_CLASSES.DOWNLOAD_ICON;
            };


            initDownloadLoader();

            scope.download = (artifact:Models.ArtifactModel):void => {

                let onFaild = (response):void => {
                    console.info('onFaild', response);
                    removeDownloadedFileLoader();
                };

                let onSuccess = (data:Models.IFileDownload):void => {
                    downloadFile(data);
                    removeDownloadedFileLoader();
                };

                setDownloadedFileLoader();

                if(scope.instance){
                    scope.component.downloadInstanceArtifact(artifact.uniqueId).then(onSuccess, onFaild);
                }else {
                    scope.component.downloadArtifact(artifact.uniqueId).then(onSuccess, onFaild);
                }
            };

            let downloadFile =  (file:Models.IFileDownload):void => {
              if (file){
                  let blob = this.fileUtils.base64toBlob(file.base64Contents,'');
                  let fileName = file.artifactName;
                  this.fileUtils.downloadFile(blob, fileName);
              }
            };

            element.on('$destroy', ()=>{
                //remove listener of download event
                if(scope.artifact && scope.artifact.uniqueId){
                    this.EventListenerService.unRegisterObserver(Utils.Constants.EVENTS.DOWNLOAD_ARTIFACT_FINISH_EVENT + scope.artifact.uniqueId);
                }
            });

        };

        public static factory = ($window:any,cacheService:Sdc.Services.CacheService,EventListenerService:Services.EventListenerService, fileUtils:Sdc.Utils.FileUtils)=> {
            return new DownloadArtifactDirective($window,cacheService,EventListenerService, fileUtils);
        };

    }

    DownloadArtifactDirective.factory.$inject = ['$window', 'Sdc.Services.CacheService', 'EventListenerService', 'FileUtils'];
}