import "server-only";
import { getRegistry } from "@/modules/_core";
import type { SerializedWidgetMeta } from "@/modules/_core/registry";
import type { DashboardLayout, PresetId } from "./dashboard";
import { computePresetLayoutFromMetas } from "./dashboard";

/** Build a layout matching one of the design's three dashboard arrangements
 *  using the live module registry. Server-only — the registry is empty on
 *  the client. */
export function computePresetLayout(preset: PresetId): DashboardLayout {
  const { widgets } = getRegistry();
  if (widgets.length === 0) return { version: 1, widgets: [] };

  const sorted = [...widgets].sort((a, b) => a.defaultPriority - b.defaultPriority);
  const metas: SerializedWidgetMeta[] = sorted.map((w) => ({
    id: w.id,
    title: w.title,
    description: w.description,
    category: w.category,
    defaultSize: w.defaultSize,
    minSize: w.minSize,
    maxSize: w.maxSize,
    defaultConfig: w.defaultConfig,
  }));

  return computePresetLayoutFromMetas(preset, metas);
}

export function computeDefaultLayout(): DashboardLayout {
  return computePresetLayout("classic");
}