add management-command (#2775)

* add management-command

* Fix formatting issues in check_keywords.py

* Update settings.py

* Update check_keywords.py

* precommit

* update

---------

Co-authored-by: DonnieBLT <[email protected]>

website/management/commands/check_keywords.py

@@ -0,0 +1,56 @@
+import requests
+from bs4 import BeautifulSoup
+from django.core.mail import send_mail
+from django.core.management.base import BaseCommand
+from django.utils import timezone
+
+from website.models import Monitor
+
+
+class Command(BaseCommand):
+    help = "Checks for keywords in monitored URLs"
+
+    def handle(self, *args, **options):
+        monitors = Monitor.objects.all()
+        for monitor in monitors:
+            try:
+                response = requests.get(monitor.url)
+                response.raise_for_status()
+
+                soup = BeautifulSoup(response.content, "html.parser")
+                page_content = soup.get_text()
+
+                if monitor.keyword in page_content:
+                    new_status = "UP"
+                else:
+                    new_status = "DOWN"
+
+                if monitor.status != new_status:
+                    monitor.status = new_status
+                    monitor.save()
+
+                    user = monitor.user
+                    self.notify_user(user.username, monitor.url, user.email, new_status)
+
+                monitor.last_checked_time = timezone.now()
+                monitor.save()
+
+                self.stdout.write(
+                    self.style.SUCCESS(f"Monitoring {monitor.url}: status {monitor.status}")
+                )
+            except Exception as e:
+                self.stderr.write(self.style.ERROR(f"Error monitoring {monitor.url}: {str(e)}"))
+
+    def notify_user(self, username, website, email, status):
+        subject = f"Website Status Update: {website} is {status}"
+        message = (
+            f"Dear {username},\n\nThe website '{website}' you are monitoring is currently {status}."
+        )
+
+        send_mail(
+            subject,
+            message,
+            None,
+            [email],
+            fail_silently=False,
+        )