"""
app/routers/ingest.py - DEBUG VERSION
"""
import os
import time
import logging
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from typing import Optional, List, Dict, Any

from app.core.ingestion import IngestionService
from app.core.retriever import Retriever
from app.models.dto import QueryRequest

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]

# --- Endpoints ---

@router.post("/analyze")
async def analyze_draft(req: AnalyzeRequest):
    """
    WP-11 Intelligence: Liefert Link-Vorschläge.
    DEBUG MODE: Threshold gesenkt, Logging erhöht.
    """
    try:
        retriever = Retriever()
        suggestions = []
        
        query_text = req.text[:400]
        logger.info(f"ANALYZING TEXT: '{query_text}' (Type: {req.type})")

        if not query_text.strip():
            return {"suggestions": []}

        # Wir suchen
        hits_result = await retriever.search(QueryRequest(query=query_text, top_k=5, mode="hybrid"))
        
        logger.info(f"RETRIEVER FOUND: {len(hits_result.results)} raw hits")

        seen_titles = set()
        for hit in hits_result.results:
            # Titel holen
            title = hit.payload.get("title") or hit.payload.get("note_id") or hit.node_id
            
            # Logging für jeden Treffer
            logger.info(f" -> CHECK HIT: {title} | Score: {hit.total_score:.4f}")

            if not title or title in seen_titles: 
                continue
            seen_titles.add(title)
            
            # Edge Logic
            edge_kind = "related_to"
            if req.type == "project": edge_kind = "depends_on"
            if req.type == "decision": edge_kind = "references"
            
            # --- ÄNDERUNG: THRESHOLD GESENKT ---
            # War vorher 0.65. Jetzt 0.3 für Tests.
            if hit.total_score > 0.3:
                suggestions.append({
                    "target_title": title,
                    "target_id": hit.node_id,
                    "suggested_markdown": f"[[rel:{edge_kind} {title}]]",
                    "reason": f"Semantisch ähnlich ({hit.total_score:.2f})",
                    "type": "semantic"
                })
            else:
                logger.info(f"    -> SKIPPED (Score too low)")
                
        logger.info(f"RETURNING {len(suggestions)} SUGGESTIONS")
        return {"suggestions": suggestions}

    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"""
    try:
        vault_root = os.getenv("MINDNET_VAULT_ROOT", "./vault")
        abs_vault_root = os.path.abspath(vault_root)
        
        if not os.path.exists(abs_vault_root):
            os.makedirs(abs_vault_root, exist_ok=True)

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

        ingest_service = IngestionService() 
        logger.info(f"Saving {final_filename}")

        result = await ingest_service.save_and_index(
            markdown_content=req.markdown_content,
            filename=final_filename
        )
        
        if result.get("status") == "error":
            raise HTTPException(status_code=500, detail=result.get("error"))
            
        return SaveResponse(
            status="success",
            file_path=result.get("file_path", "unknown"),
            note_id=result.get("note_id", "unknown"),
            stats=result.get("stats", {})
        )

    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)}")