feat: init ai activity chat session

apps/api/src/services/ai/ai.py

@@ -0,0 +1,65 @@
+from fastapi import Depends, HTTPException, Request
+from sqlmodel import Session, select
+from src.db.courses import Course, CourseRead
+from src.core.events.database import get_db_session
+from src.db.users import PublicUser
+from src.db.activities import Activity, ActivityRead
+from src.security.auth import get_current_user
+from src.services.ai.base import ask_ai
+
+from src.services.ai.schemas.ai import StartActivityAIChatSession
+from src.services.courses.activities.utils import (
+    serialize_activity_text_to_ai_comprehensible_text,
+    structure_activity_content_by_type,
+)
+
+
+def ai_start_activity_chat_session(
+    request: Request,
+    chat_session_object: StartActivityAIChatSession,
+    current_user: PublicUser = Depends(get_current_user),
+    db_session: Session = Depends(get_db_session),
+):
+    """
+    Start a new AI Chat session with a Course Activity
+    """
+    # Get the Activity
+    statement = select(Activity).where(
+        Activity.activity_uuid == chat_session_object.activity_uuid
+    )
+    activity = db_session.exec(statement).first()
+
+    activity = ActivityRead.from_orm(activity)
+
+    # Get the Course
+    statement = select(Course).join(Activity).where(
+        Activity.activity_uuid == chat_session_object.activity_uuid
+    )
+    course = db_session.exec(statement).first()
+    course = CourseRead.from_orm(course)
+
+
+    if not activity:
+        raise HTTPException(
+            status_code=404,
+            detail="Activity not found",
+        )
+
+    # Get Activity Content Blocks
+    content = activity.content
+
+    # Serialize Activity Content Blocks to a text comprehensible by the AI
+    structured = structure_activity_content_by_type(content)
+    ai_friendly_text = serialize_activity_text_to_ai_comprehensible_text(structured,course,activity)
+
+    response = ask_ai(
+        chat_session_object.message,
+        [],
+        ai_friendly_text,
+        "You are a helpful Education Assistant, and you are helping a student with the associated Course. "
+        "Use the available tools to get context about this question even if the question is not specific enough."
+        "For context, this is the Course name :" + course.name + " and this is the Lecture name :" + activity.name + "."
+        "Use your knowledge to help the student."
+    )
+
+    return response['output']