#!/usr/bin/env node

/**
 * Generate version.ts file with build information
 * This script creates a TypeScript file containing version info from git and build time
 */

const { execSync } = require('child_process');
const fs = require('fs');
const path = require('path');

function getGitHash() {
  try {
    return execSync('git rev-parse --short HEAD', { encoding: 'utf-8' }).trim();
  } catch (error) {
    console.warn('Warning: Could not get git hash, using "unknown"');
    return 'unknown';
  }
}

function getGitBranch() {
  try {
    return execSync('git rev-parse --abbrev-ref HEAD', { encoding: 'utf-8' }).trim();
  } catch (error) {
    return 'unknown';
  }
}

function getBuildTime() {
  return new Date().toISOString();
}

function getPackageVersion() {
  try {
    const packageJson = JSON.parse(
      fs.readFileSync(path.join(__dirname, '../package.json'), 'utf-8')
    );
    return packageJson.version;
  } catch (error) {
    return '1.0.0';
  }
}

const gitHash = getGitHash();
const gitBranch = getGitBranch();
const buildTime = getBuildTime();
const packageVersion = getPackageVersion();

const versionContent = `/**
 * Auto-generated version information
 * DO NOT EDIT THIS FILE MANUALLY
 * Generated at build time by scripts/generate-version.js
 */

export const VERSION_INFO = {
  version: '${packageVersion}',
  gitHash: '${gitHash}',
  gitBranch: '${gitBranch}',
  buildTime: '${buildTime}',
  fullVersion: '${packageVersion}+${gitHash}',
} as const;

export function getVersion(): string {
  return VERSION_INFO.fullVersion;
}

export function getUserAgent(): string {
  return \`ShopCallCrawler/\${VERSION_INFO.fullVersion} (+https://shopcall.ai/crawler)\`;
}
`;

const outputPath = path.join(__dirname, '../src/version.ts');

try {
  fs.writeFileSync(outputPath, versionContent, 'utf-8');
  console.log(`✓ Generated version file: ${outputPath}`);
  console.log(`  Version: ${packageVersion}+${gitHash}`);
  console.log(`  Branch: ${gitBranch}`);
  console.log(`  Build time: ${buildTime}`);
} catch (error) {
  console.error('Error writing version file:', error);
  process.exit(1);
}