import type { EditorPackOptions, EditorPackStats } from "./ipc.js";
import type { EditorProjectYaml } from "./project-yaml.js";

export const DEFAULT_PACK_SUBDIR = "dist-pack";

export function defaultPackOutDir(root: string): string {
  return `${root}/${DEFAULT_PACK_SUBDIR}`;
}

export function dialogDefaultsFromProject(
  projectYaml: EditorProjectYaml | null,
  root: string,
  fallbackName: string,
): EditorPackOptions {
  return {
    name: projectYaml?.pack?.name ?? projectYaml?.name ?? fallbackName ?? "",
    icon: projectYaml?.icon ?? "",
    desktop: projectYaml?.pack?.installer === true,
    installer: projectYaml?.pack?.installer === true,
    mods: projectYaml?.pack?.mods === true,
    splitAssets: projectYaml?.pack?.splitAssets === true,
    outDir: defaultPackOutDir(root),
  };
}

export function projectYamlFromPack(
  options: EditorPackOptions,
  prev: EditorProjectYaml | null,
): EditorProjectYaml {
  const result: EditorProjectYaml = { ...(prev ?? {}) };
  const pack = { ...(result.pack ?? {}) };
  const name = options.name.trim();
  if (name !== "") pack.name = name;
  else delete pack.name;
  pack.installer = options.installer;
  pack.mods = options.mods;
  pack.splitAssets = options.splitAssets;
  result.pack = pack;
  const icon = options.icon.trim();
  if (icon !== "") result.icon = icon;
  else delete result.icon;
  return result;
}

export interface EditorPackRequest {
  contentDir: string;
  outDir: string;
  desktop: boolean;
  installer: boolean;
  splitAssets: boolean;
  modsDir?: string;
  name?: string;
}

export function resolvePackRequest(
  root: string,
  options: EditorPackOptions,
  hasMods: boolean,
): EditorPackRequest {
  const request: EditorPackRequest = {
    contentDir: `${root}/content`,
    outDir: options.outDir.trim() !== "" ? options.outDir : defaultPackOutDir(root),
    desktop: options.installer || options.desktop,
    installer: options.installer,
    splitAssets: options.splitAssets,
  };
  const name = options.name.trim();
  if (name !== "") request.name = name;
  if (options.mods && hasMods) request.modsDir = `${root}/mods`;
  return request;
}

export function packHints(stats: EditorPackStats): string[] {
  const hints: string[] = ["site: serve the output folder statically and open index.html"];
  if (stats.desktop) {
    hints.push('desktop: cd into the desktop folder, then run "npm install && npm start"');
  }
  if (stats.installer) {
    hints.push('installer: run "npm install && npm run dist" in the desktop folder (Linux AppImage; NSIS needs a Windows host)');
  }
  return hints;
}