Update backend models, controllers, and session

src/controllers/pattern.py

@@ -0,0 +1,55 @@
+from microdot import Microdot
+from models.pattern import Pattern
+import json
+
+controller = Microdot()
+patterns = Pattern()
+
+
+@controller.get('')
+async def list_patterns(request):
+    """List all patterns."""
+    return json.dumps(patterns), 200, {'Content-Type': 'application/json'}
+
+
+@controller.get('/<id>')
+async def get_pattern(request, id):
+    """Get a specific pattern by ID."""
+    pattern = patterns.read(id)
+    if pattern is not None:
+        return json.dumps(pattern), 200, {'Content-Type': 'application/json'}
+    return json.dumps({"error": "Pattern not found"}), 404
+
+
+@controller.post('')
+async def create_pattern(request):
+    """Create a new pattern."""
+    try:
+        data = request.json or {}
+        name = data.get("name", "")
+        pattern_id = patterns.create(name, data.get("data", {}))
+        if data:
+            patterns.update(pattern_id, data)
+        return json.dumps(patterns.read(pattern_id)), 201, {'Content-Type': 'application/json'}
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400
+
+
+@controller.put('/<id>')
+async def update_pattern(request, id):
+    """Update an existing pattern."""
+    try:
+        data = request.json
+        if patterns.update(id, data):
+            return json.dumps(patterns.read(id)), 200, {'Content-Type': 'application/json'}
+        return json.dumps({"error": "Pattern not found"}), 404
+    except Exception as e:
+        return json.dumps({"error": str(e)}), 400
+
+
+@controller.delete('/<id>')
+async def delete_pattern(request, id):
+    """Delete a pattern."""
+    if patterns.delete(id):
+        return json.dumps({"message": "Pattern deleted successfully"}), 200
+    return json.dumps({"error": "Pattern not found"}), 404