#!/usr/bin/env bun
// Writes cli/lib/embedded.ts: the text files the CLI ships inside its code, so they work on every runtime and in every
// build without a files folder next to it: the Node bundle (dist/storebound.mjs), the compiled desktop sidecar
// (`bun build --compile`) and the sources. Bun's `import ... with { type: 'text' }` did this before, but Node cannot
// run that. Embedded: every file under templates/ (storebound init, web init), the shots pages (cli/shots/*.html,
// served by shots render / video) and Play's Data safety form export (cli/data/play-data-safety-form.csv).
//   bun tools/gen-embedded.ts            write cli/lib/embedded.ts
//   bun tools/gen-embedded.ts --check    exit 1 when the file is stale (bun run ci)
import { readdirSync, readFileSync, writeFileSync } from 'node:fs';
import { join, relative, resolve } from 'node:path';

const ROOT = resolve(import.meta.dir, '..');
export const OUT = join(ROOT, 'cli/lib/embedded.ts');

function walk(dir: string): string[] {
  return readdirSync(dir, { withFileTypes: true }).flatMap(e => {
    if (e.name === '.DS_Store') return [];
    const p = join(dir, e.name);
    return e.isDirectory() ? walk(p) : [p];
  }).sort();
}

const rel = (base: string, p: string) => relative(base, p).split('\\').join('/');
const table = (entries: [string, string][]): string => entries.map(([k, v]) => `  ${JSON.stringify(k)}: ${JSON.stringify(v)},`).join('\n');

export function generate(root = ROOT): string {
  const templates = walk(join(root, 'templates')).map(p => [rel(join(root, 'templates'), p), readFileSync(p, 'utf8')] as [string, string]);
  const shots = readdirSync(join(root, 'cli/shots')).filter(f => f.endsWith('.html')).sort().map(f => [f, readFileSync(join(root, 'cli/shots', f), 'utf8')] as [string, string]);
  const form = readFileSync(join(root, 'cli/data/play-data-safety-form.csv'), 'utf8');
  return [
    '// GENERATED by tools/gen-embedded.ts from templates/, cli/shots/*.html and cli/data/play-data-safety-form.csv.',
    '// Do not edit: change those files and run `bun tools/gen-embedded.ts` (bun run ci checks it is fresh).',
    '/* eslint-disable */',
    '',
    '/** Every file under templates/, by its path there (forward slashes). */',
    'export const TEMPLATE_TEXT: Record<string, string> = {',
    table(templates),
    '};',
    '',
    '/** The pages shots render / video load (cli/shots/*.html), by file name. */',
    'export const SHOTS_PAGES: Record<string, string> = {',
    table(shots),
    '};',
    '',
    "/** Play Console's Data safety form export (cli/data/play-data-safety-form.csv). */",
    `export const PLAY_DATA_SAFETY_FORM = ${JSON.stringify(form)};`,
    '',
  ].join('\n');
}

if (import.meta.main) {
  const want = generate();
  let have = '';
  try { have = readFileSync(OUT, 'utf8'); } catch { /* missing */ }
  if (process.argv.includes('--check')) {
    if (have !== want) { console.error(`stale: ${rel(ROOT, OUT)} (run bun tools/gen-embedded.ts)`); process.exit(1); }
    console.log(`${rel(ROOT, OUT)}: fresh`);
  } else if (have !== want) { writeFileSync(OUT, want); console.log(`wrote ${rel(ROOT, OUT)}`); }
  else console.log(`${rel(ROOT, OUT)}: unchanged`);
}