Add URL detection to inbox processing service (#942)

* fixup! Fix date format inconsistency in Defer Until field

* fixup! fixup! Fix date format inconsistency in Defer Until field

* fixup! fixup! fixup! Fix date format inconsistency in Defer Until field

backend/tests/unit/services/inboxProcessingService.test.js

@@ -0,0 +1,78 @@
+const {
+    processInboxItem,
+    containsUrl,
+} = require('../../../modules/inbox/inboxProcessingService');
+
+describe('inboxProcessingService', () => {
+    describe('processInboxItem', () => {
+        it('should detect URL without project and set reason to url_detected', () => {
+            const content = 'https://example.com/page #tag1 #tag2';
+            const result = processInboxItem(content);
+
+            expect(result).toEqual({
+                parsed_tags: ['tag1', 'tag2'],
+                parsed_projects: [],
+                cleaned_content: 'https://example.com/page',
+                suggested_type: null,
+                suggested_reason: 'url_detected',
+            });
+        });
+
+        it('should detect URL with project and suggest note', () => {
+            const content = 'https://example.com/page +Project #tag1';
+            const result = processInboxItem(content);
+
+            expect(result).toEqual({
+                parsed_tags: ['tag1'],
+                parsed_projects: ['Project'],
+                cleaned_content: 'https://example.com/page',
+                suggested_type: 'note',
+                suggested_reason: 'url_detected',
+            });
+        });
+
+        it('should handle URL without tags or projects', () => {
+            const content = 'https://example.com/test-page';
+            const result = processInboxItem(content);
+
+            expect(result).toEqual({
+                parsed_tags: [],
+                parsed_projects: [],
+                cleaned_content: 'https://example.com/test-page',
+                suggested_type: null,
+                suggested_reason: 'url_detected',
+            });
+        });
+
+        it('should not set url_detected reason for non-URL content', () => {
+            const content = 'Just some regular text #tag1';
+            const result = processInboxItem(content);
+
+            expect(result).toEqual({
+                parsed_tags: ['tag1'],
+                parsed_projects: [],
+                cleaned_content: 'Just some regular text',
+                suggested_type: null,
+                suggested_reason: null,
+            });
+        });
+    });
+
+    describe('containsUrl', () => {
+        it('should detect URLs in text with hashtags', () => {
+            expect(containsUrl('https://example.com/page #tag1')).toBe(true);
+        });
+
+        it('should detect URLs at the start of text', () => {
+            expect(containsUrl('https://example.com')).toBe(true);
+        });
+
+        it('should detect http URLs', () => {
+            expect(containsUrl('http://example.com/path')).toBe(true);
+        });
+
+        it('should return false for non-URL text', () => {
+            expect(containsUrl('just some text')).toBe(false);
+        });
+    });
+});