from django.shortcuts import render, redirect
from django.views.decorators.http import require_http_methods
from elastic.es_connect import get_user_by_id


@require_http_methods(["GET"])
def home(request):
    # Enforce login: require session user_id
    session_user_id = request.session.get("user_id")
    if session_user_id is None:
        return redirect("/accounts/login/")

    uid = session_user_id
    perm = request.session.get("permission")
    u = get_user_by_id(uid) if uid is not None else None
    if perm is None and uid is not None:
        try:
            perm = int((u or {}).get("permission", 1))
        except Exception:
            perm = 1
        request.session["permission"] = perm
    else:
        try:
            perm = int(perm)
        except Exception:
            perm = 1
    has_manage_key = bool((u or {}).get("manage_key") or [])
    can_manage_registration_codes = bool(int((u or {}).get("can_manage_registration_codes") or 0) == 1)
    has_registration_code = bool(str((u or {}).get("registration_code") or "").strip())
    context = {
        "user_id": uid,
        "username": (u or {}).get("username"),
        "is_admin": (int(perm) == 0),
        "has_manage_key": has_manage_key,
        "can_manage_registration_codes": can_manage_registration_codes,
        "has_registration_code": has_registration_code,
    }
    return render(request, "main/home.html", context)