"""
Session API endpoints for the AI Voice Bot server.

This module contains session management endpoints.
"""

from typing import TYPE_CHECKING
from fastapi import APIRouter, Request, Response

# Import shared models
import sys
import os
sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))))
from shared.models import SessionResponse, HealthResponse

from logger import logger

if TYPE_CHECKING:
    from ..core.session_manager import SessionManager


class SessionAPI:
    """Session API endpoint handlers"""
    
    def __init__(self, session_manager: "SessionManager", public_url: str = "/"):
        self.session_manager = session_manager
        self.router = APIRouter(prefix=f"{public_url}api")
        self._register_routes()

    def _is_valid_session_id(self, session_id: str) -> bool:
        """Check if session ID has the correct format (32-character hex string)"""
        if not session_id or len(session_id) != 32:
            return False
        # Check if it's a valid hexadecimal string
        try:
            int(session_id, 16)
            return True
        except ValueError:
            return False

    def _register_routes(self):
        """Register all session routes"""
        
        @self.router.get("/health", response_model=HealthResponse)
        def health():
            return HealthResponse(status="ok")

        @self.router.get("/session", response_model=SessionResponse)
        def get_session(request: Request, response: Response):
            # Check for existing session cookie
            session_id = request.cookies.get("session_id")

            if session_id and self._is_valid_session_id(session_id):
                # Try to get existing session
                existing_session = self.session_manager.get_session(session_id)
                if existing_session:
                    logger.info(f"Found existing session from cookie: {session_id[:8]}")
                    return SessionResponse(
                        id=existing_session.id,
                        name=existing_session.name or "",
                        lobbies=[],  # Could be populated based on existing session
                        protected=False,
                        has_media=existing_session.has_media,
                        bot_run_id=existing_session.bot_run_id,
                        bot_provider_id=existing_session.bot_provider_id,
                        bot_instance_id=existing_session.bot_instance_id,
                    )
                else:
                    # Cookie exists but session doesn't - create new session with this ID
                    logger.info(
                        f"Creating new session with cookie ID: {session_id[:8]}"
                    )
                    session = self.session_manager.create_session(session_id=session_id)
            else:
                # No valid cookie - create completely new session
                session = self.session_manager.create_session()
                logger.info(f"Created new session: {session.getName()}")

                # Set the session cookie (expires in 30 days)
                response.set_cookie(
                    key="session_id",
                    value=session.id,
                    max_age=30 * 24 * 60 * 60,  # 30 days in seconds
                    httponly=True,
                    secure=False,  # Set to True in production with HTTPS
                    samesite="lax",
                )
            
            return SessionResponse(
                id=session.id,
                name=session.name or "",
                lobbies=[],  # New sessions start with no lobbies
                protected=False,
                has_media=session.has_media,
                bot_run_id=session.bot_run_id,
                bot_provider_id=session.bot_provider_id,
                bot_instance_id=session.bot_instance_id,
            )