"""Routes — approvisionnements en carburant."""
from fastapi import APIRouter, Depends, Request, Form, UploadFile, File
from fastapi.responses import HTMLResponse, RedirectResponse
from app.auth import require_auth
from app.baserow import list_rows, create_row, update_row, get_row
from app.templates import templates
from app.config import TABLE_VEHICULES, TABLE_APPROVISIONNEMENTS, TABLE_ANOMALIES
from app.business import calculer_kilometrage, calculer_consommation, detecter_anomalies
from app.ocr import extract_text, parse_receipt_ocr

router = APIRouter(prefix="/fuel")


@router.get("/", response_class=HTMLResponse)
async def formulaire(request: Request, user=Depends(require_auth)):
    vehicules = await list_rows(TABLE_VEHICULES)
    appros = await list_rows(TABLE_APPROVISIONNEMENTS, size=50)
    return templates.TemplateResponse("fuel_form.html", {
        "request": request,
        "vehicules": vehicules,
        "appros": appros,
    })


@router.post("/add")
async def ajouter_approvisionnement(
    request: Request,
    matricule: str = Form(...),
    date: str = Form(...),
    produit: str = Form("Gasoual Normal"),
    quantite: float = Form(...),
    prix_litre: float = Form(...),
    valeur: float = Form(...),
    compteur_avant: float = Form(None),
    compteur_apres: float = Form(None),
    no_recu: str = Form(""),
    user=Depends(require_auth),
):
    # Calcul automatique
    km_parcouru = calculer_kilometrage(compteur_avant or 0, compteur_apres or 0)
    conso_100 = calculer_consommation(quantite, km_parcouru) if km_parcouru > 0 else None

    data = {
        "التاريخ": date,
        "رقم_الماتريكول": matricule,
        "المنتج": produit,
        "الكمية_باللتر": quantite,
        "السعر_الليتر": prix_litre,
        "القيمة_الجملية": valeur,
        "العداد_قبل": compteur_avant,
        "العداد_بعد": compteur_apres,
        "الكلم_المقطوع": km_parcouru,
        "الاستهلاك_100كم": conso_100,
        "رقم_الايصال": no_recu,
    }

    # Détection d'anomalies
    appro_precedents = await list_rows(TABLE_APPROVISIONNEMENTS, size=100)
    dernier = next((a for a in appro_precedents if a.get("رقم_الماتريكول") == matricule), None)
    codes = detecter_anomalies(data, dernier)

    if codes:
        data["شذوذ"] = True
        data["نوع_الشذوذ"] = ", ".join(codes)

    await create_row(TABLE_APPROVISIONNEMENTS, data)
    return RedirectResponse(url="/fuel", status_code=303)


@router.post("/ocr-upload")
async def upload_recu_ocr(
    request: Request,
    file: UploadFile = File(...),
    user=Depends(require_auth),
):
    """Upload d'un reçu + OCR automatique."""
    content = await file.read()
    text = await extract_text(content, file.filename or "receipt.jpg")
    parsed = parse_receipt_ocr(text)

    vehicules = await list_rows(TABLE_VEHICULES)
    return templates.TemplateResponse("fuel_form.html", {
        "request": request,
        "vehicules": vehicules,
        "appros": [],
        "ocr_text": text,
        "ocr_parsed": parsed,
    })