from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy import text
from sqlalchemy.orm import Session
from typing import Any

from app.database import get_session
from app.auth import get_current_user

router = APIRouter()


def _row(r) -> dict:
    return dict(r._mapping)


@router.get("")
def list_inspections(
    colony_id: int = Query(...),
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
) -> list[dict]:
    rows = session.execute(text("""
        SELECT * FROM inspections WHERE colony_id = :colony_id
        ORDER BY date::DATE DESC, id DESC
    """), {"colony_id": colony_id}).fetchall()
    return [_row(r) for r in rows]


@router.get("/last")
def last_inspection(
    colony_id: int = Query(...),
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
):
    row = session.execute(text("""
        SELECT * FROM inspections WHERE colony_id = :colony_id
        ORDER BY date::DATE DESC, id DESC LIMIT 1
    """), {"colony_id": colony_id}).fetchone()
    if row is None:
        return None
    return _row(row)


@router.get("/{id}/traits")
def inspection_traits(
    id: int,
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
) -> list[dict]:
    rows = session.execute(text("""
        SELECT * FROM inspection_traits WHERE inspection_id = :id
    """), {"id": id}).fetchall()
    return [_row(r) for r in rows]


@router.get("/{id}")
def get_inspection(
    id: int,
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
) -> dict:
    row = session.execute(
        text("SELECT * FROM inspections WHERE id = :id"), {"id": id}
    ).fetchone()
    if row is None:
        raise HTTPException(status_code=404, detail="Not found")
    return _row(row)


@router.post("", status_code=201)
def create_inspection(
    body: dict[str, Any],
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
) -> dict:
    row = session.execute(text("""
        INSERT INTO inspections
          (colony_id, date, inspector, brood_frames, honey_frames, food_stores_kg,
           colony_strength, queen_seen, eggs_seen, queen_cells_count, notes)
        VALUES
          (:colony_id, :date, :inspector, :brood_frames, :honey_frames, :food_stores_kg,
           :colony_strength, :queen_seen, :eggs_seen, :queen_cells_count, :notes)
        RETURNING *
    """), {
        "colony_id": body.get("colony_id"),
        "date": body.get("date"),
        "inspector": body.get("inspector"),
        "brood_frames": body.get("brood_frames"),
        "honey_frames": body.get("honey_frames"),
        "food_stores_kg": body.get("food_stores_kg"),
        "colony_strength": body.get("colony_strength"),
        "queen_seen": int(body.get("queen_seen", 0)),
        "eggs_seen": int(body.get("eggs_seen", 0)),
        "queen_cells_count": int(body.get("queen_cells_count", 0)),
        "notes": body.get("notes"),
    }).fetchone()
    inspection_id = row._mapping["id"]

    traits = body.get("traits", {})
    for trait, score in (traits or {}).items():
        if score is not None:
            session.execute(text("""
                INSERT INTO inspection_traits (inspection_id, trait, score)
                VALUES (:inspection_id, :trait, :score)
            """), {"inspection_id": inspection_id, "trait": trait, "score": int(score)})

    session.commit()
    return _row(row)


@router.put("/{id}")
def update_inspection(
    id: int,
    body: dict[str, Any],
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
) -> dict:
    result = session.execute(text("""
        UPDATE inspections SET
          date = :date, inspector = :inspector, brood_frames = :brood_frames,
          honey_frames = :honey_frames, food_stores_kg = :food_stores_kg,
          colony_strength = :colony_strength, queen_seen = :queen_seen,
          eggs_seen = :eggs_seen, queen_cells_count = :queen_cells_count, notes = :notes
        WHERE id = :id
        RETURNING *
    """), {
        "id": id,
        "date": body.get("date"),
        "inspector": body.get("inspector"),
        "brood_frames": body.get("brood_frames"),
        "honey_frames": body.get("honey_frames"),
        "food_stores_kg": body.get("food_stores_kg"),
        "colony_strength": body.get("colony_strength"),
        "queen_seen": int(body.get("queen_seen", 0)),
        "eggs_seen": int(body.get("eggs_seen", 0)),
        "queen_cells_count": int(body.get("queen_cells_count", 0)),
        "notes": body.get("notes"),
    }).fetchone()
    if result is None:
        raise HTTPException(status_code=404, detail="Not found")

    session.execute(
        text("DELETE FROM inspection_traits WHERE inspection_id = :id"), {"id": id}
    )
    traits = body.get("traits", {})
    for trait, score in (traits or {}).items():
        if score is not None:
            session.execute(text("""
                INSERT INTO inspection_traits (inspection_id, trait, score)
                VALUES (:inspection_id, :trait, :score)
            """), {"inspection_id": id, "trait": trait, "score": int(score)})

    session.commit()
    return _row(result)


@router.delete("/{id}", status_code=204)
def delete_inspection(
    id: int,
    session: Session = Depends(get_session),
    _: str = Depends(get_current_user),
):
    session.execute(text("DELETE FROM inspections WHERE id = :id"), {"id": id})
    session.commit()