full upgrade (#31)

* ✨ chore: update CI workflow to include testing and multi-arch build (#29)

* ✨ chore: remove unused dependencies from package-lock.json and updated to a better local dev environment (#30)

* ✨ test: add unit tests

* ✨ test: add unit tests for whole project

* ✨ feat: add whatwg-fetch for improved fetch support

* ✨ chore: update Node.js version to 22 in workflow

* ✨ refactor: update types and improve email handling tests

* ✨ refactor: remove unused imports

* ✨ fix: normalize image name to lowercase in workflows

* ✨ fix: ensure Docker image names are consistently lowercase

* ✨ chore: update

* ✨ chore: update base URL to use secret variable

* ✨ chore: update to login to ghcr

* ✨ fix: add missing 'fi' to close if statement in workflow

app/__tests__/api/fetchImage.test.tsx

@@ -0,0 +1,53 @@
+import { GET } from '@/app/api/fetchImage/route';
+import { NextRequest } from 'next/server';
+import { mockFetch } from '@/app/__tests__/__mocks__/mock-fetch-img';
+
+jest.mock('next/server', () => {
+  class NextResponseClass {
+    body: unknown;
+    init: unknown;
+    constructor(body: unknown, init?: unknown) {
+      this.body = body;
+      this.init = init;
+    }
+    static json(body: unknown, init?: unknown) {
+      return new NextResponseClass(body, init);
+    }
+    static from(body: unknown, init?: unknown) {
+      return new NextResponseClass(body, init);
+    }
+  }
+  return { NextResponse: NextResponseClass };
+});
+
+global.fetch = mockFetch({
+  ok: true,
+  headers: {
+    get: jest.fn().mockReturnValue('image/jpeg'),
+  },
+  arrayBuffer: jest.fn().mockResolvedValue(new ArrayBuffer(8)),
+});
+
+describe('GET /api/fetchImage', () => {
+  it('should return an error if no image URL is provided', async () => {
+    const mockRequest = {
+      url: 'http://localhost/api/fetchImage',
+    } as unknown as NextRequest;
+
+    const response = await GET(mockRequest);
+
+    expect(response.body).toEqual({ error: 'Missing URL parameter' });
+    expect(response.init.status).toBe(400);
+  });
+
+  it('should fetch an image if URL is provided', async () => {
+    const mockRequest = {
+      url: 'http://localhost/api/fetchImage?url=https://example.com/image.jpg',
+    } as unknown as NextRequest;
+
+    const response = await GET(mockRequest);
+
+    expect(response.body).toBeDefined();
+    expect(response.init.headers['Content-Type']).toBe('image/jpeg');
+  });
+});