Update commands to automatically run pnpm for relevant commands

Signed-off-by: Tobias O <tobias.olenyi@tum.de>

epdb/management/commands/runserver.py

@@ -0,0 +1,81 @@
+"""
+Custom runserver command that automatically starts CSS watcher.
+Overrides Django's default runserver to include pnpm dev.
+"""
+
+import signal
+import subprocess
+import sys
+from django.conf import settings
+from django.contrib.staticfiles.management.commands.runserver import (
+    Command as RunserverCommand,
+)
+
+
+class Command(RunserverCommand):
+    help = "Run development server with automatic CSS building"
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.css_process = None
+
+    def handle(self, *args, **options):
+        """Start CSS watcher before running Django dev server."""
+        self.stdout.write(self.style.SUCCESS("Starting CSS watcher (pnpm dev)..."))
+
+        # Start pnpm dev in background
+        try:
+            self.css_process = subprocess.Popen(
+                ["pnpm", "run", "dev"],
+                cwd=settings.BASE_DIR,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                text=True,
+            )
+            self.stdout.write(self.style.SUCCESS("✓ CSS watcher started\n"))
+        except FileNotFoundError:
+            self.stdout.write(
+                self.style.WARNING(
+                    "Warning: pnpm not found. CSS will not be rebuilt automatically.\n"
+                    'Install pnpm or run "pnpm run dev" manually in another terminal.\n'
+                )
+            )
+        except Exception as e:
+            self.stdout.write(
+                self.style.WARNING(f"Warning: Could not start CSS watcher: {e}\n")
+            )
+
+        # Register cleanup handler
+        original_sigint = signal.getsignal(signal.SIGINT)
+        original_sigterm = signal.getsignal(signal.SIGTERM)
+
+        def cleanup(signum, frame):
+            self.stdout.write("\nShutting down...")
+            if self.css_process:
+                self.css_process.terminate()
+                try:
+                    self.css_process.wait(timeout=5)
+                    self.stdout.write(self.style.SUCCESS("✓ CSS watcher stopped"))
+                except subprocess.TimeoutExpired:
+                    self.css_process.kill()
+            # Call original handler
+            if signum == signal.SIGINT and callable(original_sigint):
+                original_sigint(signum, frame)
+            elif signum == signal.SIGTERM and callable(original_sigterm):
+                original_sigterm(signum, frame)
+            sys.exit(0)
+
+        signal.signal(signal.SIGINT, cleanup)
+        signal.signal(signal.SIGTERM, cleanup)
+
+        # Run Django dev server
+        try:
+            super().handle(*args, **options)
+        finally:
+            # Cleanup on normal exit
+            if self.css_process:
+                self.css_process.terminate()
+                try:
+                    self.css_process.wait(timeout=5)
+                except subprocess.TimeoutExpired:
+                    self.css_process.kill()