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

from anode_client import anode_request
from auth import UserCreate, UserManager, get_user_manager, require_admin
from db import get_database_connection
from templating import templates


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


def fetch_benutzer_fuer_organisation(organization_id: str) -> list[dict]:
    with get_database_connection() as conn:
        with conn.cursor() as cur:
            cur.execute(
                "SELECT email, is_superuser, created_at FROM benutzer WHERE organization_id = %s ORDER BY email",
                (organization_id,),
            )
            return [
                {"email": email, "is_superuser": is_superuser, "created_at": created_at}
                for email, is_superuser, created_at in cur.fetchall()
            ]


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

    return templates.TemplateResponse(
        request, "admin/kunden_index.html", {"user": user, "organizations": organizations}
    )


@router.post("")
def organisation_anlegen(name: str = Form(...), user: dict = Depends(require_admin)):
    anode_request("POST", "/api/v1/organizations", json={"name": name})

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


@router.get("/{organization_id}")
def detail(request: Request, organization_id: str, user: dict = Depends(require_admin)):
    orgs_result = anode_request("GET", "/api/v1/organizations")
    organizations = orgs_result.get("organizations", []) if orgs_result.get("success") else []
    organization = next((o for o in organizations if o["id"] == organization_id), None)

    codes_result = anode_request("GET", f"/api/v1/organizations/{organization_id}/activation-codes")
    activation_codes = codes_result.get("activation_codes", []) if codes_result.get("success") else []

    benutzer = fetch_benutzer_fuer_organisation(organization_id)

    vorlagen_result = anode_request("GET", f"/api/v1/organizations/{organization_id}/bereitstellungsvorlagen")
    bereitstellungsvorlagen = vorlagen_result.get("bereitstellungsvorlagen", []) if vorlagen_result.get("success") else []

    workspaces_result = anode_request("GET", "/api/v1/workspaces")
    workspaces = workspaces_result.get("workspaces", []) if workspaces_result.get("success") else []

    backends_result = anode_request("GET", "/api/v1/backends")
    backends = backends_result.get("backends", []) if backends_result.get("success") else []

    gruppen_result = anode_request("GET", f"/api/v1/organizations/{organization_id}/gruppen")
    gruppen = gruppen_result.get("gruppen", []) if gruppen_result.get("success") else []

    return templates.TemplateResponse(
        request,
        "admin/kunden_detail.html",
        {
            "user": user,
            "organization": organization,
            "organization_id": organization_id,
            "activation_codes": activation_codes,
            "benutzer": benutzer,
            "bereitstellungsvorlagen": bereitstellungsvorlagen,
            "workspaces": workspaces,
            "backends": backends,
            "gruppen": gruppen,
        },
    )


@router.post("/{organization_id}/gruppen")
def gruppe_anlegen(organization_id: str, name: str = Form(...), user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/organizations/{organization_id}/gruppen", json={"name": name})

    return RedirectResponse(f"/admin/kunden/{organization_id}", status_code=303)


@router.post("/{organization_id}/gruppen/{gruppe_id}/loeschen")
def gruppe_loeschen(organization_id: str, gruppe_id: str, user: dict = Depends(require_admin)):
    anode_request("DELETE", f"/api/v1/gruppen/{gruppe_id}")

    return RedirectResponse(f"/admin/kunden/{organization_id}", status_code=303)


@router.get("/{organization_id}/gruppen/{gruppe_id}")
def gruppe_detail(request: Request, organization_id: str, gruppe_id: str, user: dict = Depends(require_admin)):
    gruppen_result = anode_request("GET", f"/api/v1/organizations/{organization_id}/gruppen")
    gruppen = gruppen_result.get("gruppen", []) if gruppen_result.get("success") else []
    gruppe = next((g for g in gruppen if g["id"] == gruppe_id), None)

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

    merkmale_result = anode_request("GET", f"/api/v1/gruppen/{gruppe_id}/merkmale")
    merkmale = merkmale_result.get("merkmale", []) if merkmale_result.get("success") else []

    kategorien: dict[str, list[dict]] = {}
    for eintrag in merkmale:
        kategorie_name = eintrag["kategorie"]["name"] if eintrag["kategorie"] else "Ohne Kategorie"
        kategorien.setdefault(kategorie_name, []).append(eintrag)

    devices_result = anode_request("GET", f"/api/v1/organizations/{organization_id}/devices")
    devices = devices_result.get("devices", []) if devices_result.get("success") else []

    # anode bietet keinen direkten "Geräte einer Gruppe"-Endpunkt an, nur
    # "Gruppen eines Geräts" (GET /devices/{id}/gruppen) - daher hier für
    # jedes Gerät der Organisation dessen Gruppen abfragen und filtern.
    mitglied_ids = set()
    for device in devices:
        dg_result = anode_request("GET", f"/api/v1/devices/{device['id']}/gruppen")
        device_gruppen = dg_result.get("gruppen", []) if dg_result.get("success") else []
        if any(g["id"] == gruppe_id for g in device_gruppen):
            mitglied_ids.add(device["id"])

    return templates.TemplateResponse(
        request,
        "admin/gruppe_detail.html",
        {
            "user": user,
            "organization_id": organization_id,
            "gruppe": gruppe,
            "kategorien": kategorien,
            "devices": devices,
            "mitglied_ids": mitglied_ids,
        },
    )


@router.post("/{organization_id}/gruppen/{gruppe_id}/merkmale/{merkmal_key}/select")
def gruppe_merkmal_select(organization_id: str, gruppe_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/gruppen/{gruppe_id}/merkmale/{merkmal_key}/select")

    return RedirectResponse(f"/admin/kunden/{organization_id}/gruppen/{gruppe_id}", status_code=303)


@router.post("/{organization_id}/gruppen/{gruppe_id}/merkmale/{merkmal_key}/deselect")
def gruppe_merkmal_deselect(organization_id: str, gruppe_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/gruppen/{gruppe_id}/merkmale/{merkmal_key}/deselect")

    return RedirectResponse(f"/admin/kunden/{organization_id}/gruppen/{gruppe_id}", status_code=303)


@router.post("/{organization_id}/gruppen/{gruppe_id}/merkmale/{merkmal_key}/unset")
def gruppe_merkmal_unset(organization_id: str, gruppe_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/gruppen/{gruppe_id}/merkmale/{merkmal_key}/unset")

    return RedirectResponse(f"/admin/kunden/{organization_id}/gruppen/{gruppe_id}", status_code=303)


@router.post("/{organization_id}/gruppen/{gruppe_id}/geraete/{device_id}/hinzufuegen")
def gruppe_geraet_hinzufuegen(organization_id: str, gruppe_id: str, device_id: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/devices/{device_id}/gruppen/{gruppe_id}")

    return RedirectResponse(f"/admin/kunden/{organization_id}/gruppen/{gruppe_id}", status_code=303)


@router.post("/{organization_id}/gruppen/{gruppe_id}/geraete/{device_id}/entfernen")
def gruppe_geraet_entfernen(organization_id: str, gruppe_id: str, device_id: str, user: dict = Depends(require_admin)):
    anode_request("DELETE", f"/api/v1/devices/{device_id}/gruppen/{gruppe_id}")

    return RedirectResponse(f"/admin/kunden/{organization_id}/gruppen/{gruppe_id}", status_code=303)


@router.post("/{organization_id}/bereitstellungsvorlagen")
def bereitstellungsvorlage_anlegen(
    organization_id: str,
    workspace_id: str = Form(...),
    backend_id: str = Form(...),
    label: str = Form(...),
    is_default: str = Form(default=""),
    disk_encryption: str = Form(default=""),
    root_filesystem: str = Form(default="ext4"),
    secure_boot_required: str = Form(default=""),
    user: dict = Depends(require_admin),
):
    anode_request(
        "POST",
        f"/api/v1/organizations/{organization_id}/bereitstellungsvorlagen",
        json={
            "workspace_id": workspace_id,
            "backend_id": backend_id,
            "label": label,
            "is_default": is_default == "on",
            "disk_encryption": disk_encryption == "on",
            "root_filesystem": root_filesystem,
            "secure_boot_required": secure_boot_required == "on",
        },
    )

    return RedirectResponse(f"/admin/kunden/{organization_id}", status_code=303)


@router.post("/{organization_id}/activation-codes")
def aktivierungscode_anlegen(organization_id: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/organizations/{organization_id}/activation-codes")

    return RedirectResponse(f"/admin/kunden/{organization_id}", status_code=303)


@router.post("/{organization_id}/konten")
async def konto_anlegen(
    organization_id: str,
    email: str = Form(...),
    password: str = Form(...),
    is_superuser: str = Form(default=""),
    user: dict = Depends(require_admin),
    user_manager: UserManager = Depends(get_user_manager),
):
    await user_manager.create(
        UserCreate(
            email=email,
            password=password,
            organization_id=organization_id,
            is_superuser=is_superuser == "on",
        )
    )

    return RedirectResponse(f"/admin/kunden/{organization_id}", status_code=303)


@router.get("/{organization_id}/organisationseinheiten/{oe_id}/merkmale")
def oe_merkmale_ansicht(request: Request, organization_id: str, oe_id: str, user: dict = Depends(require_admin)):
    """
    Minimale Admin-Ansicht einer OE - anders als bei Gruppen kein volles
    CRUD hier (OE-Struktur bleibt laut ADR-0012 Kunden-Self-Service unter
    /struktur), nur der Merkmale-Editor als Sprungziel von der
    Auftragskatalog-Herkunftsanzeige aus.
    """

    merkmale_result = anode_request("GET", f"/api/v1/organisationseinheiten/{oe_id}/merkmale")
    merkmale = merkmale_result.get("merkmale", []) if merkmale_result.get("success") else []

    kategorien: dict[str, list[dict]] = {}
    for eintrag in merkmale:
        kategorie_name = eintrag["kategorie"]["name"] if eintrag["kategorie"] else "Ohne Kategorie"
        kategorien.setdefault(kategorie_name, []).append(eintrag)

    return templates.TemplateResponse(
        request,
        "admin/oe_merkmale.html",
        {"user": user, "organization_id": organization_id, "oe_id": oe_id, "kategorien": kategorien},
    )


@router.post("/{organization_id}/organisationseinheiten/{oe_id}/merkmale/{merkmal_key}/select")
def admin_oe_merkmal_select(organization_id: str, oe_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/organisationseinheiten/{oe_id}/merkmale/{merkmal_key}/select")

    return RedirectResponse(f"/admin/kunden/{organization_id}/organisationseinheiten/{oe_id}/merkmale", status_code=303)


@router.post("/{organization_id}/organisationseinheiten/{oe_id}/merkmale/{merkmal_key}/deselect")
def admin_oe_merkmal_deselect(organization_id: str, oe_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/organisationseinheiten/{oe_id}/merkmale/{merkmal_key}/deselect")

    return RedirectResponse(f"/admin/kunden/{organization_id}/organisationseinheiten/{oe_id}/merkmale", status_code=303)


@router.post("/{organization_id}/organisationseinheiten/{oe_id}/merkmale/{merkmal_key}/unset")
def admin_oe_merkmal_unset(organization_id: str, oe_id: str, merkmal_key: str, user: dict = Depends(require_admin)):
    anode_request("POST", f"/api/v1/organisationseinheiten/{oe_id}/merkmale/{merkmal_key}/unset")

    return RedirectResponse(f"/admin/kunden/{organization_id}/organisationseinheiten/{oe_id}/merkmale", status_code=303)