import { readFile, writeFile } from 'node:fs/promises';
import path from 'node:path';
import process from 'node:process';
import { fileURLToPath } from 'node:url';
import { parseToolboxApp } from '@add-ideas/toolbox-contract';
import { format } from 'prettier';

const projectRoot = path.resolve(
  path.dirname(fileURLToPath(import.meta.url)),
  '..'
);
const packageJsonPath = path.join(projectRoot, 'package.json');
const definitionPath = path.join(
  projectRoot,
  'src',
  'toolbox',
  'manifest.definition.json'
);
const versionSourcePath = path.join(projectRoot, 'src', 'version.ts');
const manifestPath = path.join(projectRoot, 'public', 'toolbox-app.json');

const [packageJson, definition, versionSource] = await Promise.all([
  readJson(packageJsonPath),
  readJson(definitionPath),
  readFile(versionSourcePath, 'utf8'),
]);

const sourceVersion = versionSource.match(
  /APP_VERSION\s*=\s*['"]([^'"]+)['"]/
)?.[1];

if (!sourceVersion) {
  throw new Error('Could not read APP_VERSION from src/version.ts.');
}
if (sourceVersion !== packageJson.version) {
  throw new Error(
    `Version mismatch: package.json is ${packageJson.version}, while src/version.ts is ${sourceVersion}.`
  );
}

const manifest = {
  $schema:
    'https://git.add-ideas.de/zemion/toolbox-sdk/raw/branch/main/schemas/toolbox-app.v1.schema.json',
  schemaVersion: 1,
  ...definition,
  version: packageJson.version,
};
parseToolboxApp(manifest);
const output = await format(JSON.stringify(manifest), { parser: 'json' });

if (process.argv.includes('--check')) {
  const existing = await readFile(manifestPath, 'utf8').catch(() => '');
  if (existing !== output) {
    throw new Error(
      'public/toolbox-app.json is out of date. Run npm run manifest:generate.'
    );
  }
} else {
  await writeFile(manifestPath, output);
}

async function readJson(filePath) {
  return JSON.parse(await readFile(filePath, 'utf8'));
}