import { type ReactNode, useState } from "react";
import {
  AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent,
  AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle,
} from "@/components/ui/alert-dialog";
import { cn } from "@/lib/utils";
import { Loader2 } from "lucide-react";

type ConfirmDialogProps = {
  open: boolean;
  onOpenChange: (v: boolean) => void;
  title: ReactNode;
  description?: ReactNode;
  confirmLabel?: string;
  cancelLabel?: string;
  destructive?: boolean;
  onConfirm: () => void | Promise<void>;
};

/**
 * Modal confirmation dialog per UI_STANDARDS §14. Awaits async `onConfirm`
 * while showing a spinner; never closes on error (caller re-throws or shows
 * a toast). Wraps shadcn's Radix-powered AlertDialog for correct ARIA + focus
 * management.
 */
export function ConfirmDialog({
  open,
  onOpenChange,
  title,
  description,
  confirmLabel = "Confirm",
  cancelLabel = "Cancel",
  destructive,
  onConfirm,
}: ConfirmDialogProps) {
  const [pending, setPending] = useState(false);

  async function handleConfirm(e: React.MouseEvent) {
    e.preventDefault();
    if (pending) return;
    setPending(true);
    try {
      await onConfirm();
      onOpenChange(false);
    } finally {
      setPending(false);
    }
  }

  return (
    <AlertDialog open={open} onOpenChange={(v) => !pending && onOpenChange(v)}>
      <AlertDialogContent>
        <AlertDialogHeader>
          <AlertDialogTitle>{title}</AlertDialogTitle>
          {description && <AlertDialogDescription>{description}</AlertDialogDescription>}
        </AlertDialogHeader>
        <AlertDialogFooter>
          <AlertDialogCancel disabled={pending}>{cancelLabel}</AlertDialogCancel>
          <AlertDialogAction
            onClick={handleConfirm}
            disabled={pending}
            className={cn(
              destructive && "bg-danger text-danger-foreground hover:bg-danger/90 focus-visible:ring-danger",
            )}
          >
            {pending && <Loader2 className="h-4 w-4 animate-spin" aria-hidden />}
            {confirmLabel}
          </AlertDialogAction>
        </AlertDialogFooter>
      </AlertDialogContent>
    </AlertDialog>
  );
}