barebone app with django and react, sse, jwt token, comport reader, test comport writer, requires com0com, users with groups, sample table vehicles, tokens for access and refresh

backend/api/models.py

@@ -0,0 +1,38 @@
+from django.db import models
+from django.contrib.auth.models import AbstractUser
+from django.utils import timezone
+
+
+class User(AbstractUser):
+    """Custom User model with role and admin flag"""
+    ROLE_CHOICES = [
+        ('employee', 'Employee'),
+        ('viewer', 'Viewer'),
+    ]
+
+    role = models.CharField(max_length=20, choices=ROLE_CHOICES, default='viewer')
+    is_admin = models.BooleanField(default=False)
+
+    class Meta:
+        db_table = 'api_user'
+
+    def __str__(self):
+        return f"{self.username} ({self.get_role_display()})"
+
+
+class ComPortReading(models.Model):
+    """Model to store serial port readings"""
+    port = models.CharField(max_length=20)
+    data = models.TextField()
+    timestamp = models.DateTimeField(auto_now_add=True)
+    source_ip = models.GenericIPAddressField(null=True, blank=True)
+    
+    class Meta:
+        ordering = ['-timestamp']
+        indexes = [
+            models.Index(fields=['-timestamp']),
+            models.Index(fields=['port', '-timestamp']),
+        ]
+    
+    def __str__(self):
+        return f"{self.port} - {self.timestamp}"