# router.py

import os
import logging
import asyncio
from fastapi import APIRouter
from fastapi.responses import StreamingResponse
from pydantic import BaseModel
from intake.intake import add_exchange_internal

# Setup
# -------------------------------------------------------------------
LOG_DETAIL_LEVEL = os.getenv("LOG_DETAIL_LEVEL", "summary").lower()
logger = logging.getLogger(__name__)

# Always set up basic logging
logger.setLevel(logging.INFO)
console_handler = logging.StreamHandler()
console_handler.setFormatter(logging.Formatter(
    '%(asctime)s [ROUTER] %(levelname)s: %(message)s',
    datefmt='%H:%M:%S'
))
logger.addHandler(console_handler)

cortex_router = APIRouter()

# -------------------------------------------------------------------
# Models
# -------------------------------------------------------------------
class ReasonRequest(BaseModel):
    session_id: str
    user_prompt: str
    temperature: float | None = None
    backend: str | None = None

# -------------------------------------------------------------------
# /simple endpoint - Standard chatbot mode (no reasoning pipeline)
# -------------------------------------------------------------------
@cortex_router.post("/simple")
async def run_simple(req: ReasonRequest):
    """
    Standard chatbot mode - bypasses all cortex reasoning pipeline.
    Just a simple conversation loop like a typical chatbot.
    """
    from datetime import datetime
    from llm.llm_router import call_llm

    start_time = datetime.now()

    logger.info(f"\n{'='*100}")
    logger.info(f"💬 SIMPLE MODE | Session: {req.session_id} | {datetime.now().strftime('%H:%M:%S.%f')[:-3]}")
    logger.info(f"{'='*100}")
    logger.info(f"📝 User: {req.user_prompt[:150]}...")
    logger.info(f"{'-'*100}\n")

    # Get recent messages from Intake buffer
    from intake.intake import get_recent_messages
    recent_msgs = get_recent_messages(req.session_id, limit=20)
    logger.info(f"📋 Retrieved {len(recent_msgs)} recent messages from Intake buffer")

    # Build simple conversation history with system message
    system_message = {
        "role": "system",
        "content": (
            "You are a helpful AI assistant. Provide direct, concise responses to the user's questions. "
            "Maintain context from previous messages in the conversation."
        )
    }

    messages = [system_message]

    # Add conversation history

    if recent_msgs:
        for msg in recent_msgs:
            messages.append({
                "role": msg.get("role", "user"),
                "content": msg.get("content", "")
            })
            logger.info(f"  - {msg.get('role')}: {msg.get('content', '')[:50]}...")

    # Add current user message
    messages.append({
        "role": "user",
        "content": req.user_prompt
    })

    logger.info(f"📨 Total messages being sent to LLM: {len(messages)} (including system message)")

    # Get backend from request, otherwise fall back to env variable
    backend = req.backend if req.backend else os.getenv("STANDARD_MODE_LLM", "SECONDARY")
    backend = backend.upper()  # Normalize to uppercase
    logger.info(f"🔧 Using backend: {backend}")

    temperature = req.temperature if req.temperature is not None else 0.7



    # Call LLM with or without tools
    try:
            # Direct LLM call without tools (original behavior)
            raw_response = await call_llm(
                messages=messages,
                backend=backend,
                temperature=temperature,
                max_tokens=2048
            )
            response = raw_response.strip()

    except Exception as e:
        logger.error(f"❌ LLM call failed: {e}")
        response = f"Error: {str(e)}"

    # Update session with the exchange
    try:
        add_exchange_internal({
            "session_id": req.session_id,
            "role": "user",
            "content": req.user_prompt
        })
        add_exchange_internal({
            "session_id": req.session_id,
            "role": "assistant",
            "content": response
        })
    except Exception as e:
        logger.warning(f"⚠️  Session update failed: {e}")

    duration = (datetime.now() - start_time).total_seconds() * 1000

    logger.info(f"\n{'='*100}")
    logger.info(f"✨ SIMPLE MODE COMPLETE | Session: {req.session_id} | Total: {duration:.0f}ms")
    logger.info(f"📤 Output: {len(response)} chars")
    logger.info(f"{'='*100}\n")

    return {
        "draft": response,
        "neutral": response,
        "persona": response,
        "reflection": "",
        "session_id": req.session_id,
        "context_summary": {
            "message_count": len(messages),
            "mode": "standard"
        }
    }

# -------------------------------------------------------------------
# /ingest endpoint (internal)
# -------------------------------------------------------------------
class IngestPayload(BaseModel):
    session_id: str
    user_msg: str
    assistant_msg: str


@cortex_router.post("/ingest")
async def ingest(payload: IngestPayload):
    try:
        add_exchange_internal({
            "session_id": payload.session_id,
            "user_msg": payload.user_msg,
            "assistant_msg": payload.assistant_msg,
        })
    except Exception as e:
        logger.warning(f"[INGEST] Intake update failed: {e}")

    return {"status": "ok", "session_id": payload.session_id}