Add Header and Footer wrapper for their own relationship classes

src/file/footer-wrapper.ts

@@ -0,0 +1,55 @@
+import { Footer } from "./footer/footer";
+import { IMediaData, Media } from "./media";
+import { Paragraph } from "./paragraph";
+import { Relationships } from "./relationships";
+import { Table } from "./table";
+
+export class FooterWrapper {
+    private readonly footer: Footer;
+    private readonly relationships: Relationships;
+
+    constructor(private readonly media: Media) {
+        this.footer = new Footer();
+        this.relationships = new Relationships();
+    }
+
+    public addParagraph(paragraph: Paragraph): void {
+        this.footer.addParagraph(paragraph);
+    }
+
+    public createParagraph(text?: string): Paragraph {
+        const para = new Paragraph(text);
+        this.addParagraph(para);
+        return para;
+    }
+
+    public addTable(table: Table): void {
+        this.footer.addTable(table);
+    }
+
+    public createTable(rows: number, cols: number): Table {
+        return this.footer.createTable(rows, cols);
+    }
+
+    public addDrawing(imageData: IMediaData): void {
+        this.footer.addDrawing(imageData);
+    }
+
+    public createImage(image: string): void {
+        const mediaData = this.media.addMedia(image, this.relationships.RelationshipCount);
+        this.relationships.createRelationship(
+            mediaData.referenceId,
+            "http://schemas.openxmlformats.org/officeDocument/2006/relationships/image",
+            `media/${mediaData.fileName}`,
+        );
+        this.addDrawing(mediaData);
+    }
+
+    public get Footer(): Footer {
+        return this.footer;
+    }
+
+    public get Relationships(): Relationships {
+        return this.relationships;
+    }
+}