1 files changed, 85 insertions, 0 deletions
diff --git a/mod2/ui/src/app/services/download.service.ts b/mod2/ui/src/app/services/download.service.ts
new file mode 100644
index 0000000..619eff7
--- /dev/null
+++ b/mod2/ui/src/app/services/download.service.ts
@@ -0,0 +1,85 @@
+/* 
+ *  # ============LICENSE_START=======================================================
+ *  # Copyright (c) 2020 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=========================================================
+ */
+
+import { Injectable } from '@angular/core';
+import * as saveAs from 'file-saver';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class DownloadService {
+
+  constructor() { }
+
+  /* * * * Download json file * * * */
+  downloadJSON(content, fileName){
+    let file = new Blob([JSON.stringify(content)], { type: 'text;charset=utf-8' });
+    let name: string = `${fileName}.json`
+    saveAs(file, name)
+  }
+
+  /* * * * Export ms instance table to excel or csv * * * */
+  exportTableData(exportTo, downloadElements, arrHeader) {
+    if (exportTo === "excel") {
+      import("xlsx").then(xlsx => {
+        const worksheet = xlsx.utils.json_to_sheet(downloadElements);
+        const workbook = { Sheets: { 'data': worksheet }, SheetNames: ['data'] };
+        const excelBuffer: any = xlsx.write(workbook, { bookType: 'xlsx', type: 'array' });
+        this.saveAsExcelFile(excelBuffer, "Table_Data");
+      });
+    } else if (exportTo === "csv") {
+      let csvData = this.convertToCSV(downloadElements, arrHeader)
+      var blob = new Blob([csvData], { type: 'text/csv' })
+      saveAs(blob, "Table_Data.csv");
+    }
+  }
+  saveAsExcelFile(buffer: any, fileName: string): void {
+    import("file-saver").then(FileSaver => {
+      let EXCEL_TYPE = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8';
+      let EXCEL_EXTENSION = '.xlsx';
+      const data: Blob = new Blob([buffer], {
+        type: EXCEL_TYPE
+      });
+      FileSaver.saveAs(data, fileName + '_export_' + new Date().getTime() + EXCEL_EXTENSION);
+    });
+  }
+  convertToCSV(objArray, headerList) {
+    let array = typeof objArray != 'object' ? JSON.parse(objArray) : objArray;
+    let str = '';
+    let row = '';
+    for (let index in headerList) {
+      row += headerList[index] + ',';
+    }
+    row = row.slice(0, -1);
+    str += row + '\r\n';
+    for (let i = 0; i < array.length; i++) {
+      let line = '';
+      for (let index in headerList) {
+        let head = headerList[index];
+        if (array[i][head] === null || array[i][head] === undefined) {
+          line += ','
+        } else {
+          if (head === "Labels" && array[i][head].length > 1) { line += '[' + array[i][head].join('] [') + '],'; }
+          else { line += array[i][head] + ','; }
+        }
+      }
+      str += line + '\r\n';
+    }
+    return str;
+  }
+}