import { readFile, writeFile } from 'fs/promises';
import dedent from 'dedent';
import { askQuestion, createReadlineInterface, gitExec, ensureGitSync } from './utils.ts';

// Simple version increment functions to avoid semver compatibility issues
function incrementVersion(version: string, type: 'patch' | 'minor' | 'major'): string {
  const parts = version.split('.').map(Number);
  if (parts.length !== 3) return '';

  switch (type) {
    case 'patch':
      parts[2]++;
      break;
    case 'minor':
      parts[1]++;
      parts[2] = 0;
      break;
    case 'major':
      parts[0]++;
      parts[1] = 0;
      parts[2] = 0;
      break;
  }

  return parts.join('.');
}

function isValidVersion(version: string): boolean {
  const versionRegex = /^\d+\.\d+\.\d+$/;
  return versionRegex.test(version);
}

const rl = createReadlineInterface();

async function getTargetVersion(currentVersion: string): Promise<string> {
  const updateType = await askQuestion(
    dedent`
        Current version: ${currentVersion}
        Kind of update:
            patch(1.0.1) -> type 1 or p
            minor(1.1.0) -> type 2 or min
            major(2.0.0) -> type 3 or maj
            or version number (e.g. 2.0.0)
        Enter choice: `,
    rl
  );

  switch (updateType.trim()) {
    case 'p':
    case '1':
      return incrementVersion(currentVersion, 'patch');
    case 'min':
    case '2':
      return incrementVersion(currentVersion, 'minor');
    case 'maj':
    case '3':
      return incrementVersion(currentVersion, 'major');
    default:
      const trimmed = updateType.trim();
      return isValidVersion(trimmed) ? trimmed : '';
  }
}

async function updateJsonFile(
  filename: string,
  updateFn: (json: Record<string, unknown>) => void
): Promise<void> {
  try {
    const content = JSON.parse(await readFile(filename, 'utf8'));
    updateFn(content);
    await writeFile(filename, JSON.stringify(content, null, '  '));
  } catch (error) {
    console.error(
      `Error updating ${filename}:`,
      error instanceof Error ? error.message : String(error)
    );
    throw error;
  }
}

async function updateManifestVersions(targetVersion: string): Promise<void> {
  try {
    const manifest = JSON.parse(await readFile('manifest.json', 'utf8'));
    const { minAppVersion } = manifest;

    await Promise.all([
      updateJsonFile('manifest.json', (json) => (json.version = targetVersion)),
      updateJsonFile('versions.json', (json) => (json[targetVersion] = minAppVersion)),
      updateJsonFile('package.json', (json) => (json.version = targetVersion))
      // updateJsonFile("package-lock.json", json => json.version = targetVersion)
    ]);
  } catch (error) {
    console.error(
      'Error updating manifest versions:',
      error instanceof Error ? error.message : String(error)
    );
    throw error;
  }
}

async function updateVersion(): Promise<void> {
  try {
    const currentVersion = process.env.npm_package_version || '1.0.0';
    const targetVersion = await getTargetVersion(currentVersion);

    if (!targetVersion) {
      console.log('Invalid version');
      return;
    }

    try {
      // Update all files first
      await updateManifestVersions(targetVersion);
      console.log(`Files updated to version ${targetVersion}`);

      // Add files to git
      gitExec('git add manifest.json package.json versions.json');
      gitExec(`git commit -m "Updated to version ${targetVersion}"`);
      console.log('Changes committed');
    } catch (error) {
      console.error(
        'Error during update or commit:',
        error instanceof Error ? error.message : String(error)
      );
      console.log('Operation failed.');
      return;
    }

    try {
      // Ensure Git is synchronized before pushing
      await ensureGitSync();

      gitExec('git push');
      console.log(`Version successfully updated to ${targetVersion} and pushed.`);
    } catch (pushError) {
      console.error(
        'Failed to push version update:',
        pushError instanceof Error ? pushError.message : String(pushError)
      );
    }
  } catch (error) {
    console.error('Error:', error instanceof Error ? error.message : String(error));
  } finally {
    rl.close();
  }
}

updateVersion()
  .catch(console.error)
  .finally(() => {
    console.log('Exiting...');
    process.exit();
  });