import { WebviewWindow } from '@tauri-apps/api/webviewWindow';
import type { FloatingWidgetInstance } from '@frontend/types/floatingWidget';

const widgetWindows = new Map<string, WebviewWindow>();

function widgetUrl(instance: FloatingWidgetInstance): string {
  const params = new URLSearchParams({
    id: instance.id,
    rows: String(instance.rows),
    cols: String(instance.cols),
    width: String(instance.width),
    height: String(instance.height),
  });
  if (instance.rowFr?.length) params.set('rowFr', instance.rowFr.join(','));
  if (instance.colFr?.length) params.set('colFr', instance.colFr.join(','));
  params.set('slots', JSON.stringify(instance.slots));
  return `widget.html?${params.toString()}`;
}

export async function openWidgetWindow(instance: FloatingWidgetInstance): Promise<void> {
  const label = `widget-${instance.id}`;
  const existing = widgetWindows.get(instance.id) ?? (await WebviewWindow.getByLabel(label));
  if (existing) {
    await existing.setFocus();
    widgetWindows.set(instance.id, existing);
    return;
  }

  const title = `GoldenChart — 위젯 ${instance.rows}×${instance.cols}`;

  const win = new WebviewWindow(label, {
    url: widgetUrl(instance),
    title,
    width: instance.width,
    height: instance.height,
    minWidth: 320,
    minHeight: 240,
    decorations: true,
    resizable: true,
    center: false,
    x: instance.position.x,
    y: instance.position.y,
    backgroundColor: '#1a1b26',
  });

  widgetWindows.set(instance.id, win);

  void win.once('tauri://destroyed', () => {
    widgetWindows.delete(instance.id);
  });
}

export async function closeWidgetWindow(id: string): Promise<void> {
  const label = `widget-${id}`;
  const win = widgetWindows.get(id) ?? (await WebviewWindow.getByLabel(label));
  if (win) {
    await win.close();
    widgetWindows.delete(id);
  }
}

export async function focusWidgetWindow(id: string): Promise<void> {
  const label = `widget-${id}`;
  const win = widgetWindows.get(id) ?? (await WebviewWindow.getByLabel(label));
  if (win) await win.setFocus();
}