"""Reportes ciudadanos sobre unidades (incidents)."""
import uuid
from typing import Optional

from fastapi import APIRouter, Depends, File, Form, HTTPException, UploadFile

from app.core.deps import get_current_user
from app.core.supabase_client import supabase_admin
from app.schemas.incidents import (
    IncidentOut,
    UnitPublic,
)

router = APIRouter(prefix="/incidents", tags=["incidents"])

BUCKET = "incident-photos"
VALID_CATEGORIES = {"derrame", "dano_propiedad", "conducta", "no_recoleccion", "otro"}


@router.get("/units", response_model=list[UnitPublic])
def list_units(_user: dict = Depends(get_current_user)):
    """Lista unidades activas para que el ciudadano elija al reportar."""
    try:
        res = (
            supabase_admin.table("units")
            .select("id, plate, status")
            .eq("status", "active")
            .order("id")
            .execute()
        )
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Error al listar unidades: {e}")

    return [UnitPublic(**r) for r in (res.data or [])]


def _upload_photo(user_id: str, photo: UploadFile) -> str:
    ext = (photo.filename or "").rsplit(".", 1)[-1].lower() or "jpg"
    if ext not in {"jpg", "jpeg", "png", "webp"}:
        ext = "jpg"
    path = f"{user_id}/{uuid.uuid4().hex}.{ext}"

    content = photo.file.read()
    content_type = photo.content_type or f"image/{ext}"

    try:
        supabase_admin.storage.from_(BUCKET).upload(
            path=path,
            file=content,
            file_options={"content-type": content_type, "upsert": "false"},
        )
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Error al subir foto: {e}")

    try:
        public = supabase_admin.storage.from_(BUCKET).get_public_url(path)
        return public if isinstance(public, str) else str(public)
    except Exception:
        return path


@router.post("", response_model=IncidentOut, status_code=201)
async def create_incident(
    category: str = Form(...),
    description: str = Form(...),
    unit_id: Optional[int] = Form(None),
    photo: Optional[UploadFile] = File(None),
    current_user: dict = Depends(get_current_user),
):
    if category not in VALID_CATEGORIES:
        raise HTTPException(status_code=400, detail="Categoría inválida")
    if len(description.strip()) < 3:
        raise HTTPException(status_code=400, detail="Descripción demasiado corta")

    user_id = current_user["user_id"]
    photo_url: Optional[str] = None
    if photo is not None and photo.filename:
        photo_url = _upload_photo(user_id, photo)

    payload = {
        "user_id": user_id,
        "unit_id": unit_id,
        "category": category,
        "description": description.strip(),
        "photo_url": photo_url,
    }
    try:
        res = supabase_admin.table("incidents").insert(payload).execute()
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Error al guardar reporte: {e}")

    row = (res.data or [{}])[0]
    return IncidentOut(
        id=row.get("id"),
        user_id=row.get("user_id"),
        unit_id=row.get("unit_id"),
        category=row.get("category"),
        description=row.get("description"),
        photo_url=row.get("photo_url"),
        status=row.get("status") or "open",
        created_at=row.get("created_at") and str(row["created_at"]),
    )


@router.get("/me", response_model=list[IncidentOut])
def my_incidents(current_user: dict = Depends(get_current_user)):
    try:
        res = (
            supabase_admin.table("incidents")
            .select("*")
            .eq("user_id", current_user["user_id"])
            .order("created_at", desc=True)
            .execute()
        )
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Error al listar reportes: {e}")

    out: list[IncidentOut] = []
    for row in res.data or []:
        out.append(
            IncidentOut(
                id=row.get("id"),
                user_id=row.get("user_id"),
                unit_id=row.get("unit_id"),
                category=row.get("category"),
                description=row.get("description"),
                photo_url=row.get("photo_url"),
                status=row.get("status") or "open",
                created_at=row.get("created_at") and str(row["created_at"]),
            )
        )
    return out