added media class and packer to handle it

ts/export/packer/packer.ts

@@ -2,6 +2,7 @@ import * as archiver from "archiver";
 import * as path from "path";
 import * as xml from "xml";
 import { Document } from "../../docx";
+import { Media } from "../../media";
 import { Numbering } from "../../numbering";
 import { Properties } from "../../properties";
 import { Styles } from "../../styles";
@@ -24,6 +25,7 @@ export abstract class Packer {
             lastModifiedBy: "Un-named",
         }),
         private numbering: Numbering = new Numbering(),
+        private media: Media = new Media(),
     ) {
         this.formatter = new Formatter();
         this.archive = archiver.create("zip", {});
@@ -54,8 +56,14 @@ export abstract class Packer {
 
         const xmlDocument = xml(this.formatter.format(this.document));
         const xmlStyles = xml(this.formatter.format(this.style));
-        const xmlProperties = xml(this.formatter.format(this.properties), { declaration: { standalone: "yes", encoding: "UTF-8" } });
+        const xmlProperties = xml(this.formatter.format(this.properties), {
+            declaration: {
+                standalone: "yes",
+                encoding: "UTF-8",
+            },
+        });
         const xmlNumbering = xml(this.formatter.format(this.numbering));
+
         this.archive.append(xmlDocument, {
             name: "word/document.xml",
         });
@@ -72,6 +80,12 @@ export abstract class Packer {
             name: "word/numbering.xml",
         });
 
+        for (const data of this.media.array) {
+            this.archive.append(data.stream, {
+                name: `media/${data.fileName}`,
+            });
+        }
+
         this.archive.finalize();
     }
 }

ts/media/index.ts

@@ -0,0 +1,40 @@
+import * as fs from "fs";
+import * as path from "path";
+
+interface IData {
+    referenceId: number;
+    stream: fs.ReadStream;
+    path: string;
+    fileName: string;
+}
+
+export class Media {
+    private map: Map<string, IData>;
+
+    constructor() {
+        this.map = new Map<string, IData>();
+    }
+
+    public getMedia(key: string): IData | undefined {
+        return this.map.get(key);
+    }
+
+    public addMedia(key: string, filePath: string): void {
+        this.map.set(key, {
+            referenceId: this.map.values.length,
+            stream: fs.createReadStream(filePath),
+            path: filePath,
+            fileName: path.basename(filePath),
+        });
+    }
+
+    public get array(): IData[] {
+        const array = new Array<IData>();
+
+        this.map.forEach((data) => {
+            array.push(data);
+        });
+
+        return array;
+    }
+}