"use client";

import { useEffect, type ReactNode } from "react";
import { X } from "lucide-react";

interface ConfirmDialogProps {
  open: boolean;
  title: string;
  /** Body content — plain text or richer markup (e.g. an avatar row). */
  children?: ReactNode;
  confirmLabel: string;
  cancelLabel?: string;
  /** "danger" renders a red confirm button for destructive actions. */
  tone?: "default" | "danger";
  /** Disables the buttons and swaps the confirm label while pending. */
  busy?: boolean;
  busyLabel?: string;
  onConfirm: () => void;
  onCancel: () => void;
}

/**
 * Small confirmation modal in the app's dialog style (overlay + card),
 * replacing bare window.confirm() prompts. Closes on Escape and on
 * overlay click; the cancel button takes initial focus so a stray Enter
 * never triggers a destructive action.
 */
export function ConfirmDialog({
  open,
  title,
  children,
  confirmLabel,
  cancelLabel = "Cancel",
  tone = "default",
  busy = false,
  busyLabel,
  onConfirm,
  onCancel,
}: ConfirmDialogProps) {
  useEffect(() => {
    if (!open) return;
    const onKeyDown = (event: KeyboardEvent) => {
      if (event.key === "Escape" && !busy) onCancel();
    };
    window.addEventListener("keydown", onKeyDown);
    return () => window.removeEventListener("keydown", onKeyDown);
  }, [open, busy, onCancel]);

  if (!open) return null;

  return (
    <div
      className="fixed inset-0 z-50 flex items-center justify-center bg-[var(--overlay)] px-4"
      role="alertdialog"
      aria-modal="true"
      aria-label={title}
      onClick={() => {
        if (!busy) onCancel();
      }}
    >
      <div
        onClick={(e) => e.stopPropagation()}
        className="w-full max-w-sm rounded-2xl border border-[var(--border)] bg-[var(--card)] p-5 shadow-xl"
      >
        <div className="mb-3 flex items-center justify-between">
          <h2 className="text-base font-semibold text-[var(--foreground)]">
            {title}
          </h2>
          <button
            type="button"
            onClick={onCancel}
            disabled={busy}
            className="rounded-md p-1 text-[var(--muted-foreground)] hover:bg-[var(--background)] hover:text-[var(--foreground)] disabled:opacity-40"
            aria-label="Close"
          >
            <X size={16} />
          </button>
        </div>

        {children && (
          <div className="mb-4 text-sm text-[var(--muted-foreground)]">
            {children}
          </div>
        )}

        <div className="flex items-center justify-end gap-2">
          <button
            type="button"
            onClick={onCancel}
            disabled={busy}
            autoFocus
            className="rounded-lg px-3 py-1.5 text-sm text-[var(--muted-foreground)] hover:text-[var(--foreground)] disabled:opacity-40"
          >
            {cancelLabel}
          </button>
          <button
            type="button"
            onClick={onConfirm}
            disabled={busy}
            className={`rounded-lg px-3 py-1.5 text-sm font-medium disabled:opacity-40 transition-colors ${
              tone === "danger"
                ? "bg-red-600 text-white hover:bg-red-700"
                : "bg-[var(--foreground)] text-[var(--background)] hover:opacity-90"
            }`}
          >
            {busy ? (busyLabel ?? confirmLabel) : confirmLabel}
          </button>
        </div>
      </div>
    </div>
  );
}