feat(ads): initialize ads app with Ad, AdEvaluation, and NotificationLog models and API views

backend/ads/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

backend/ads/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class AdsConfig(AppConfig):
+    name = 'ads'

backend/ads/models.py

@@ -0,0 +1,59 @@
+from django.db import models
+from core.models import BaseModel
+from crawler.models import CrawlTask
+
+class Ad(BaseModel):
+    divar_token = models.CharField(max_length=50, unique=True)
+    title = models.CharField(max_length=255)
+    description = models.TextField()
+    price = models.CharField(max_length=100, null=True, blank=True)
+    category = models.CharField(max_length=100, null=True, blank=True)
+    images = models.JSONField(default=list)
+    url = models.URLField()
+    created_at = models.DateTimeField(auto_now_add=True)
+    published_at = models.DateTimeField(null=True, blank=True)
+
+    class Meta:
+        indexes = [
+            models.Index(fields=['created_at']),
+        ]
+
+    def __str__(self):
+        return f"{self.title} (Token: {self.divar_token})"
+
+
+class AdEvaluation(BaseModel):
+    crawl_task = models.ForeignKey(CrawlTask, on_delete=models.PROTECT, related_name='evaluations')
+    ad = models.ForeignKey(Ad, on_delete=models.PROTECT, related_name='evaluations')
+    is_flagged = models.BooleanField(default=False)
+    reason = models.TextField(null=True, blank=True)
+    confidence = models.FloatField(null=True, blank=True)
+    extracted_fields = models.JSONField(default=dict)
+    evaluated_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        constraints = [
+            models.UniqueConstraint(fields=['crawl_task', 'ad'], name='unique_crawl_task_ad')
+        ]
+        indexes = [
+            models.Index(fields=['is_flagged']),
+            models.Index(fields=['evaluated_at']),
+        ]
+
+    def __str__(self):
+        return f"Evaluation of Ad {self.ad.id} under Task {self.crawl_task.title} (Flagged: {self.is_flagged})"
+
+class NotificationLog(BaseModel):
+    STATUS_CHOICES = [
+        ('SENT', 'Sent'),
+        ('FAILED', 'Failed'),
+    ]
+
+    evaluation = models.ForeignKey(AdEvaluation, on_delete=models.CASCADE, related_name='notifications')
+    channel_id = models.CharField(max_length=100)
+    sent_at = models.DateTimeField(auto_now_add=True)
+    status = models.CharField(max_length=20, choices=STATUS_CHOICES)
+    error_message = models.TextField(null=True, blank=True)
+
+    def __str__(self):
+        return f"Notification to {self.channel_id} (Status: {self.status})"

backend/ads/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

backend/ads/urls.py

@@ -0,0 +1,6 @@
+from django.urls import path
+from .views import AdsView
+
+urlpatterns = [
+    path('', AdsView.as_view()),
+]

backend/ads/views.py

@@ -0,0 +1,10 @@
+from django.shortcuts import render
+from rest_framework.views import APIView
+from rest_framework.response import Response
+
+# Create your views here.
+
+class AdsView(APIView):
+    def get(self, request):
+        return Response({'message': 'Hello from Ads'})
+

backend/config/settings.py

@@ -49,6 +49,7 @@ INSTALLED_APPS = [
     # Local apps
     'core',
     'crawler',
+    'ads',
 ]
 
 MIDDLEWARE = [

backend/config/urls.py

@@ -20,4 +20,5 @@ from django.urls import path,include
 urlpatterns = [
     path('admin/', admin.site.urls),
     path('api/crawlers/', include('crawler.urls')),
+    path('api/ads/', include('ads.urls')),
 ]