Our very own
+ +
')).toBe(false)
+ })
+
+ test('should return false for invalid data URIs', () => {
+ expect(isValidBase64Image('data:text/plain;base64,SGVsbG8=')).toBe(false)
+ expect(isValidBase64Image('data:image/png,iVBORw0KGgo')).toBe(false)
+ expect(isValidBase64Image('data:image/')).toBe(false)
+ })
+
+ test('should return false for URLs', () => {
+ expect(isValidBase64Image('https://example.com/image.jpg')).toBe(false)
+ })
+ })
+})
+
+describe('formatBase64Image', () => {
+ test('should return unchanged for complete data URIs', () => {
+ const testCases = [
+ 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA',
+ 'data:image/jpeg;base64,/9j/4AAQSkZJRg==',
+ 'data:image/gif;base64,R0lGODlhAQABAIAAAP',
+ 'data:image/webp;base64,UklGRiQAAABXRUJQ',
+ 'data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0',
+ 'data:image/custom;base64,somedata',
+ ]
+
+ testCases.forEach((dataUri) => {
+ expect(formatBase64Image(dataUri)).toBe(dataUri)
+ })
+ })
+
+ test('should add data URI prefix to pure base64 strings', () => {
+ const testCases = [
+ {
+ input: '/9j/4AAQSkZJRg==',
+ expected: 'data:image/jpeg;base64,/9j/4AAQSkZJRg==',
+ },
+ {
+ input: 'SGVsbG8gV29ybGQ=',
+ expected: 'data:image/jpeg;base64,SGVsbG8gV29ybGQ=',
+ },
+ { input: 'ABC+/123==', expected: 'data:image/jpeg;base64,ABC+/123==' },
+ {
+ input:
+ 'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==',
+ expected:
+ 'data:image/jpeg;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==',
+ },
+ { input: '', expected: 'data:image/jpeg;base64,' },
+ ]
+
+ testCases.forEach(({ input, expected }) => {
+ expect(formatBase64Image(input)).toBe(expected)
+ })
+ })
+})
diff --git a/edge-apps/birthday-greeting/src/image.ts b/edge-apps/birthday-greeting/src/image.ts
new file mode 100644
index 000000000..3af956b61
--- /dev/null
+++ b/edge-apps/birthday-greeting/src/image.ts
@@ -0,0 +1,30 @@
+export function isValidBase64Image(str: string): boolean {
+ if (!str || str.trim() === '') {
+ return false
+ }
+
+ const base64Pattern = /^data:image\/(png|jpeg|jpg|gif|webp|svg\+xml);base64,/
+ if (base64Pattern.test(str)) {
+ return true
+ }
+
+ // Remove whitespace for validation
+ const cleaned = str.replace(/\s/g, '')
+
+ // Must contain only valid base64 characters
+ const pureBase64Pattern = /^[A-Za-z0-9+/=]+$/
+ if (!pureBase64Pattern.test(cleaned)) {
+ return false
+ }
+
+ // Must be at least 4 characters (minimum valid base64)
+ // and length should be multiple of 4 (with padding) for valid base64
+ return cleaned.length >= 4 && cleaned.length % 4 === 0
+}
+
+export function formatBase64Image(str: string): string {
+ if (str.startsWith('data:image/')) {
+ return str
+ }
+ return `data:image/jpeg;base64,${str}`
+}
diff --git a/edge-apps/birthday-greeting/src/main.test.ts b/edge-apps/birthday-greeting/src/main.test.ts
new file mode 100644
index 000000000..31da22850
--- /dev/null
+++ b/edge-apps/birthday-greeting/src/main.test.ts
@@ -0,0 +1,115 @@
+import { describe, test, expect, beforeEach, afterEach } from 'bun:test'
+import { setupScreenlyMock, resetScreenlyMock } from '@screenly/edge-apps/test'
+import { getSettingWithDefault } from '@screenly/edge-apps'
+
+describe('Birthday Greeting App Settings', () => {
+ beforeEach(() => {
+ setupScreenlyMock(
+ {
+ location: 'Office Lobby',
+ hostname: 'display-01',
+ },
+ {
+ name: 'John Doe',
+ role: 'Software Engineer',
+ image: '',
+ },
+ )
+ })
+
+ afterEach(() => {
+ resetScreenlyMock()
+ })
+
+ test('should retrieve name setting correctly', () => {
+ const name = getSettingWithDefault