"""
Search API router — unified hybrid search endpoint.
"""
from typing import Optional
from fastapi import APIRouter, Depends
from pydantic import BaseModel
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select

from app.database import get_db
from app.models import Photo
from app.services.search import hybrid_search
from app.models.user import User
from app.dependencies import get_current_user

router = APIRouter()


class SearchRequest(BaseModel):
    q: Optional[str] = None
    filters: Optional[dict] = None
    limit: int = 50
    offset: int = 0


@router.post("")
async def search_photos(body: SearchRequest, db: AsyncSession = Depends(get_db), current_user: User = Depends(get_current_user)):
    """FTS search over photo metadata with optional tag and date filters."""
    filters = body.filters or {}

    results = await hybrid_search(
        db=db,
        q=body.q,
        tag_ids=filters.get("tag_ids"),
        date_from=filters.get("date_from"),
        date_to=filters.get("date_to"),
        limit=body.limit,
        offset=body.offset,
    )

    if not results:
        return {"results": [], "total": 0}

    # Hydrate with photo data
    photo_ids = [r["photo_id"] for r in results]
    stmt = select(Photo).where(Photo.id.in_(photo_ids), Photo.user_id == current_user.id)
    rows = (await db.execute(stmt)).scalars().all()
    photo_map = {p.id: p for p in rows}

    hydrated = []
    for r in results:
        photo = photo_map.get(r["photo_id"])
        if not photo:
            continue
        hydrated.append({
            "id": photo.id,
            "filename": photo.filename,
            "filepath": photo.filepath,
            "media_type": photo.media_type,
            "width": photo.width,
            "height": photo.height,
            "taken_at": photo.taken_at.isoformat() if photo.taken_at else None,
            "rating": photo.rating,
            "color_label": photo.color_label,
            "thumb_small": photo.thumb_small,
            "thumb_medium": photo.thumb_medium,
            "score": r["score"],
        })

    return {"results": hydrated, "total": len(hydrated)}