Use JS API to fetch node info and set related attached content

- Add new service
 - Remove old HTTP-based methods from FormService
 - Refactoring

Refs #621

ng2-components/ng2-activiti-form/src/services/activiti-alfresco.service.ts

@@ -0,0 +1,90 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * 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.
+ */
+
+import { Injectable } from '@angular/core';
+import { Observable } from 'rxjs/Rx';
+import { AlfrescoAuthenticationService } from 'ng2-alfresco-core';
+import { ExternalContent } from '../components/widgets/core/external-content';
+import { ExternalContentLink } from '../components/widgets/core/external-content-link';
+
+@Injectable()
+export class ActivitiAlfrescoContentService {
+
+    static UNKNOWN_ERROR_MESSAGE: string = 'Unknown error';
+    static GENERIC_ERROR_MESSAGE: string = 'Server error';
+
+    constructor(private authService: AlfrescoAuthenticationService) {
+    }
+
+    /**
+     * Returns a list of child nodes below the specified folder
+     *
+     * @param accountId
+     * @param folderId
+     * @returns {null}
+     */
+    getAlfrescoNodes(accountId: string, folderId: string): Observable<[ExternalContent]> {
+        let apiService: any = this.authService.getAlfrescoApi();
+        let accountShortId = accountId.replace('alfresco-', '');
+        return Observable.fromPromise(apiService.activiti.alfrescoApi.getContentInFolder(accountShortId, folderId))
+            .map(this.toJsonArray)
+            .catch(this.handleError);
+    }
+
+    /**
+     * Returns a list of child nodes below the specified folder
+     *
+     * @param accountId
+     * @param node
+     * @param siteId
+     * @returns {null}
+     */
+    linkAlfrescoNode(accountId: string, node: ExternalContent, siteId: string): Observable<ExternalContentLink> {
+        let apiService: any = this.authService.getAlfrescoApi();
+        return Observable.fromPromise(apiService.activiti.contentApi.createTemporaryRelatedContent({
+            link: true,
+            name: node.title,
+            simpleType: node.simpleType,
+            source: accountId,
+            sourceId: node.id + '@' + siteId
+        })).map(this.toJson).catch(this.handleError);
+    }
+
+    toJson(res: any) {
+        if (res) {
+            return res || {};
+        }
+        return {};
+    }
+
+    toJsonArray(res: any) {
+        if (res) {
+            return res.data || [];
+        }
+        return [];
+    }
+
+    handleError(error: any): Observable<any> {
+        let errMsg = ActivitiAlfrescoContentService.UNKNOWN_ERROR_MESSAGE;
+        if (error) {
+            errMsg = (error.message) ? error.message :
+                error.status ? `${error.status} - ${error.statusText}` : ActivitiAlfrescoContentService.GENERIC_ERROR_MESSAGE;
+        }
+        console.error(errMsg);
+        return Observable.throw(errMsg);
+    }
+}