"""
app/routers/ingest.py
API-Endpunkte für WP-11 (Discovery & Persistence).
Fixed Async/Await Integration with Discovery Service.
"""
import os
import time
import logging
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from typing import Optional, Dict, Any

from app.core.ingestion import IngestionService
# WICHTIG: Wir nutzen wieder den spezialisierten DiscoveryService
from app.services.discovery import DiscoveryService

logger = logging.getLogger(__name__)

router = APIRouter()

# --- DTOs ---

class AnalyzeRequest(BaseModel):
    text: str
    type: str = "concept"

class SaveRequest(BaseModel):
    markdown_content: str
    filename: Optional[str] = None 
    folder: str = "00_Inbox"

class SaveResponse(BaseModel):
    status: str
    file_path: str
    note_id: str
    stats: Dict[str, Any]

# --- Services ---
discovery_service = DiscoveryService()

# --- Endpoints ---

@router.post("/analyze")
async def analyze_draft(req: AnalyzeRequest):
    """
    WP-11 Intelligence: Liefert Link-Vorschläge (Exact + Semantic).
    """
    try:
        # Wir delegieren an den Service, der Exact Matching, Config und Semantik beherrscht
        result = await discovery_service.analyze_draft(req.text, req.type)
        return result

    except Exception as e:
        logger.error(f"Analyze failed: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail=f"Analysis failed: {str(e)}")

@router.post("/save", response_model=SaveResponse)
async def save_note(req: SaveRequest):
    """
    WP-11 Persistence: Speichert Markdown physisch und indiziert es sofort.
    """
    try:
        # 1. Pfad-Setup
        vault_root = os.getenv("MINDNET_VAULT_ROOT", "./vault")
        abs_vault_root = os.path.abspath(vault_root)
        
        if not os.path.exists(abs_vault_root):
            try:
                os.makedirs(abs_vault_root, exist_ok=True)
            except Exception:
                raise HTTPException(status_code=500, detail=f"Vault root missing and cannot create: {abs_vault_root}")

        # 2. Filename
        final_filename = req.filename
        if not final_filename:
            final_filename = f"draft_{int(time.time())}.md"

        # 3. Ingestion Service (Async)
        ingest_service = IngestionService() 
        
        logger.info(f"Saving {final_filename} to {req.folder}")

        # Async Call zum Ingestion Service
        result = await ingest_service.create_from_text(
            markdown_content=req.markdown_content,
            filename=final_filename,
            vault_root=abs_vault_root,
            folder=req.folder
        )
        
        if result.get("status") == "error":
            raise HTTPException(status_code=500, detail=result.get("error"))
            
        return SaveResponse(
            status="success",
            file_path=result.get("path", "unknown"),
            note_id=result.get("note_id", "unknown"),
            stats={
                "chunks": result.get("chunks_count", 0),
                "edges": result.get("edges_count", 0)
            }
        )

    except HTTPException as he:
        raise he
    except Exception as e:
        logger.error(f"Save failed: {e}", exc_info=True)
        raise HTTPException(status_code=500, detail=f"Save failed: {str(e)}")