import { NextResponse } from "next/server";
import { getPaths } from "yt-dlp-transcript-common/lib/paths";
import {
  readWidgetPresets,
  type WidgetPreset,
} from "yt-dlp-transcript-common/lib/widgetPresets";
import {
  BUILT_IN_PRESETS,
  type BuiltInPreset,
} from "yt-dlp-transcript-common/views/builtInPresets";

export const dynamic = "force-dynamic";

// The preset list, for the IN-WIDGET menu. The builder page SSR-seeds from
// readWidgetPresets directly; the widget is a bare client page with no server
// parent to seed it, so it fetches this on open and after each mutation.
//
// Built-ins ride along rather than being duplicated client-side, so the two
// surfaces can never show different starting points.
export type WidgetPresetsPayload = {
  builtIn: BuiltInPreset[];
  saved: WidgetPreset[];
};

export async function GET() {
  const saved = await readWidgetPresets(getPaths());
  return NextResponse.json({
    builtIn: BUILT_IN_PRESETS,
    saved,
  } satisfies WidgetPresetsPayload);
}