from fastapi import APIRouter, Depends, Form, HTTPException, Request
from fastapi.responses import RedirectResponse

from anode_client import anode_request
from auth import require_admin
from routers.geraete import OPTIONEN_FELDER, anreichere_mit_quelle_url, gruppiere_nach_kategorie
from templating import templates


router = APIRouter(prefix="/admin/geraete")


def find_device(device_id: str) -> dict | None:
    result = anode_request("GET", "/api/v1/devices")
    devices = result.get("devices", []) if result.get("success") else []

    for device in devices:
        if device["id"] == device_id:
            return device

    return None


@router.get("")
def index(request: Request, user: dict = Depends(require_admin)):
    result = anode_request("GET", "/api/v1/devices")
    devices = result.get("devices", []) if result.get("success") else []

    # Admin-Liste ist organisationsübergreifend - jede Zeile braucht die
    # OE-Auswahl ihrer eigenen Organisation für "In OE verschieben", daher
    # je vorkommender Organisation einmal (nicht pro Gerät) abfragen.
    oe_by_org: dict[str, list[dict]] = {}
    for organization_id in {device["organization_id"] for device in devices}:
        oe_result = anode_request("GET", f"/api/v1/organizations/{organization_id}/organisationseinheiten")
        oe_by_org[organization_id] = oe_result.get("organisationseinheiten", []) if oe_result.get("success") else []

    return templates.TemplateResponse(
        request,
        "admin/geraete_liste.html",
        {"user": user, "devices": devices, "oe_by_org": oe_by_org},
    )


@router.post("/{device_id}/oe")
def oe_verschieben(device_id: str, oe_id: str = Form(...), user: dict = Depends(require_admin)):
    if find_device(device_id) is None:
        raise HTTPException(status_code=404, detail="Gerät wurde nicht gefunden.")

    anode_request("POST", f"/api/v1/devices/{device_id}/oe", json={"oe_id": oe_id})

    return RedirectResponse("/admin/geraete", status_code=303)


@router.get("/{device_id}")
def auftragskatalog_ansicht(request: Request, device_id: str, user: dict = Depends(require_admin)):
    device = find_device(device_id)

    if device is None:
        raise HTTPException(status_code=404, detail="Gerät wurde nicht gefunden.")

    result = anode_request("GET", f"/api/v1/devices/{device_id}/auftragskatalog")
    katalog = result.get("auftragskatalog", []) if result.get("success") else []
    fehler = None if result.get("success") else result.get("message")

    katalog = anreichere_mit_quelle_url(
        katalog,
        f"/admin/kunden/{device['organization_id']}/organisationseinheiten",
        f"/admin/kunden/{device['organization_id']}/gruppen",
    )

    return templates.TemplateResponse(
        request,
        "auftragskatalog.html",
        {
            "user": user,
            "device": device,
            "kategorien": gruppiere_nach_kategorie(katalog),
            "fehler": fehler,
            "optionen_felder": OPTIONEN_FELDER,
            "zurueck_url": "/admin/geraete",
        },
    )


@router.post("/{device_id}/auftragskatalog/{merkmal_key}/select")
async def auftrag_select(
    request: Request, device_id: str, merkmal_key: str, user: dict = Depends(require_admin)
):
    if find_device(device_id) is None:
        raise HTTPException(status_code=404, detail="Gerät wurde nicht gefunden.")

    form = await request.form()
    optionen = {
        feld["key"]: (form.get(f"optionen.{feld['key']}") == "on")
        for feld in OPTIONEN_FELDER.get(merkmal_key, [])
    }

    anode_request(
        "POST",
        f"/api/v1/devices/{device_id}/auftragskatalog/{merkmal_key}/select",
        json={"optionen": optionen},
    )

    return RedirectResponse(f"/admin/geraete/{device_id}", status_code=303)


@router.post("/{device_id}/auftragskatalog/{merkmal_key}/deselect")
def auftrag_deselect(device_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    if find_device(device_id) is None:
        raise HTTPException(status_code=404, detail="Gerät wurde nicht gefunden.")

    anode_request(
        "POST", f"/api/v1/devices/{device_id}/auftragskatalog/{merkmal_key}/deselect"
    )

    return RedirectResponse(f"/admin/geraete/{device_id}", status_code=303)