import packageJson from '../../package.json';
import { DEFAULT_INPUT_TEMPLATE } from '../constant';

export function getBuildConfig() {
  if (typeof process === 'undefined') {
    throw new TypeError(
      '[Server Config] you are importing a nodejs-only module outside of nodejs',
    );
  }

  const buildMode = process.env.BUILD_MODE ?? 'standalone';
  const isApp = !!process.env.BUILD_APP;
  const version = `v${packageJson.version}`;

  const commitInfo = (() => {
    try {
      const childProcess = require('node:child_process');
      const commitDate: string = childProcess
        .execSync('git log -1 --format="%at000" --date=unix')
        .toString()
        .trim();
      const commitHash: string = childProcess
        .execSync('git log --pretty=format:"%H" -n 1')
        .toString()
        .trim();

      return { commitDate, commitHash };
    } catch (e) {
      console.error('[Build Config] No git or not from git repo.');
      return {
        commitDate: 'unknown',
        commitHash: 'unknown',
      };
    }
  })();

  return {
    version,
    ...commitInfo,
    buildMode,
    isApp,
    template: process.env.DEFAULT_INPUT_TEMPLATE ?? DEFAULT_INPUT_TEMPLATE,
  };
}

export type BuildConfig = ReturnType<typeof getBuildConfig>;