feat: add user management viewset and sync module to API routes

sync/api_views.py

@@ -0,0 +1,14 @@
+from rest_framework import viewsets
+from .models import ChangeLog
+from .serializers import ChangeLogSerializer
+
+class ChangeLogViewSet(viewsets.ReadOnlyModelViewSet):
+    queryset = ChangeLog.objects.all()
+    serializer_class = ChangeLogSerializer
+
+    def get_queryset(self):
+        queryset = super().get_queryset()
+        since_id = self.request.query_params.get('since_id')
+        if since_id:
+            queryset = queryset.filter(id__gt=since_id)
+        return queryset

sync/apps.py

@@ -0,0 +1,9 @@
+from django.apps import AppConfig
+
+class SyncConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'sync'
+
+    def ready(self):
+        from .signals import register_signals
+        register_signals()

sync/migrations/0001_initial.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.1.4 on 2026-03-28 15:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='ChangeLog',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('model_name', models.CharField(choices=[('Product', 'Product'), ('Comanda', 'Comanda'), ('Order', 'Order'), ('Client', 'Client'), ('Categories', 'Categories'), ('Mesa', 'Mesa'), ('Payments', 'Payments')], max_length=50)),
+                ('object_id', models.IntegerField()),
+                ('action', models.CharField(choices=[('SAVE', 'Save'), ('DELETE', 'Delete')], max_length=10)),
+                ('timestamp', models.DateTimeField(auto_now_add=True)),
+            ],
+            options={
+                'ordering': ['timestamp'],
+                'indexes': [models.Index(fields=['timestamp'], name='sync_change_timesta_c62f24_idx'), models.Index(fields=['model_name', 'object_id'], name='sync_change_model_n_3f4f8a_idx')],
+            },
+        ),
+    ]

sync/models.py

@@ -0,0 +1,31 @@
+from django.db import models
+
+class ChangeLog(models.Model):
+    MODEL_CHOICES = [
+        ('Product', 'Product'),
+        ('Comanda', 'Comanda'),
+        ('Order', 'Order'),
+        ('Client', 'Client'),
+        ('Categories', 'Categories'),
+        ('Mesa', 'Mesa'),
+        ('Payments', 'Payments'),
+    ]
+    ACTION_CHOICES = [
+        ('SAVE', 'Save'),
+        ('DELETE', 'Delete'),
+    ]
+    
+    model_name = models.CharField(max_length=50, choices=MODEL_CHOICES)
+    object_id = models.IntegerField()
+    action = models.CharField(max_length=10, choices=ACTION_CHOICES)
+    timestamp = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ['timestamp']
+        indexes = [
+            models.Index(fields=['timestamp']),
+            models.Index(fields=['model_name', 'object_id']),
+        ]
+
+    def __str__(self):
+        return f"{self.model_name} {self.object_id} {self.action} at {self.timestamp}"

sync/serializers.py

@@ -0,0 +1,7 @@
+from rest_framework import serializers
+from .models import ChangeLog
+
+class ChangeLogSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ChangeLog
+        fields = '__all__'

sync/signals.py

@@ -0,0 +1,35 @@
+from django.db.models.signals import post_save, post_delete
+from .models import ChangeLog
+
+from products.models import Product
+from comandas.models import Comanda, ProductComanda
+from orders.models import Order
+from clients.models import Client
+from categories.models import Categories
+from mesas.models import Mesa
+from payments.models import Payments
+
+MODELS_TO_TRACK = [
+    Product, Comanda, ProductComanda, Order, Client, Categories, Mesa, Payments
+]
+
+def handle_save(sender, instance, created, **kwargs):
+    model_name = sender.__name__
+    ChangeLog.objects.create(
+        model_name=model_name,
+        object_id=instance.id,
+        action='SAVE'
+    )
+
+def handle_delete(sender, instance, **kwargs):
+    model_name = sender.__name__
+    ChangeLog.objects.create(
+        model_name=model_name,
+        object_id=instance.id,
+        action='DELETE'
+    )
+
+def register_signals():
+    for model in MODELS_TO_TRACK:
+        post_save.connect(handle_save, sender=model, dispatch_uid=f"sync_save_{model.__name__}")
+        post_delete.connect(handle_delete, sender=model, dispatch_uid=f"sync_delete_{model.__name__}")