Initial commit - clean project structure

ai_tutor/models.py

@@ -0,0 +1,36 @@
+from django.db import models
+
+
+class Conversation(models.Model):
+    user_id = models.IntegerField(db_index=True)  # ارجاع سبک به accounts.User
+    lesson_id = models.IntegerField(null=True, blank=True)  # ارجاع سبک به content.Lesson
+    chapter_id = models.IntegerField(null=True, blank=True)  # شناسه‌ی فصل RAG (خارج از content/)
+    grade_id = models.IntegerField(null=True, blank=True)  # ارجاع سبک به content.Grade
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return f"conv-{self.pk}-user{self.user_id}"
+
+
+class Message(models.Model):
+    ROLE_CHOICES = [('user', 'کاربر'), ('assistant', 'دستیار')]
+
+    conversation = models.ForeignKey(Conversation, on_delete=models.CASCADE, related_name='messages')
+    role = models.CharField(max_length=10, choices=ROLE_CHOICES)
+    text = models.TextField()
+    question_id = models.IntegerField(null=True, blank=True)  # ارجاع سبک به content.Question
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        ordering = ['created_at']
+
+    def __str__(self):
+        return f"msg-{self.pk}-{self.role}"
+
+
+class MessageFeedback(models.Model):
+    message = models.OneToOneField(Message, on_delete=models.CASCADE, related_name='feedback')
+    is_helpful = models.BooleanField()
+
+    def __str__(self):
+        return f"feedback-msg{self.message_id}"