#!/usr/bin/env node

/**
 * Generate Version Script
 *
 * This script generates a version.js file that exports the version from package.json.
 * This allows the CLI to access the version without having to read package.json directly,
 * which can be problematic when the package is installed globally.
 *
 * It also updates the version in the README.md file and CLI package.json to ensure they
 * stay in sync with the main package.json.
 */

import fs from 'fs'
import path from 'path'
import { fileURLToPath } from 'url'

// Get the directory of the current module
const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)

// Path to the root directory
const rootDir = path.join(__dirname, '..')

// Path to package.json
const packageJsonPath = path.join(rootDir, 'package.json')

// Path to the output directory
const outputDir = path.join(rootDir, 'src', 'utils')

// Path to the output file
const outputFile = path.join(outputDir, 'version.ts')

// Path to README.md
const readmePath = path.join(rootDir, 'README.md')

// Path to CLI package.json
const cliPackageJsonPath = path.join(rootDir, 'cli-package', 'package.json')

// Read package.json
const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf8'))
const version = packageJson.version

// Create the output directory if it doesn't exist
if (!fs.existsSync(outputDir)) {
  fs.mkdirSync(outputDir, { recursive: true })
}

// Generate the version.ts file
const content = `/**
 * This file is auto-generated during the build process.
 * Do not modify this file directly.
 */

export const VERSION = '${version}';
`

// Write the file
fs.writeFileSync(outputFile, content)

console.log(`Generated version.ts with version ${version}`)

// Update README.md with the current version, Node.js version, and TypeScript version
try {
  let readmeContent = fs.readFileSync(readmePath, 'utf8')

  // Get Node.js version requirement from package.json
  const nodeVersion = packageJson.engines.node.replace('>=', '')

  // Get TypeScript version from package.json devDependencies
  const typescriptVersion = packageJson.devDependencies.typescript.replace('^', '')

  // Update npm badge - using a more flexible approach with explicit version
  const npmBadgeRegex = /\[\!\[npm\].*?\]\(https:\/\/www\.npmjs\.com\/package\/@soulcraft\/brainy\)/g
  if (npmBadgeRegex.test(readmeContent)) {
    readmeContent = readmeContent.replace(
      npmBadgeRegex,
      `[![npm](https://img.shields.io/badge/npm-v${version}-blue.svg)](https://www.npmjs.com/package/@soulcraft/brainy)`
    )
  } else {
    console.log('Warning: Could not find npm badge in README.md')
  }

  // Update Node.js badge - using a more flexible approach
  const nodeBadgeRegex = /\[\!\[Node\.js\].*?\]\(https:\/\/nodejs\.org\/\)/g
  if (nodeBadgeRegex.test(readmeContent)) {
    readmeContent = readmeContent.replace(
      nodeBadgeRegex,
      `[![Node.js](https://img.shields.io/badge/node-%3E%3D${nodeVersion}-brightgreen.svg)](https://nodejs.org/)`
    )
  } else {
    console.log('Warning: Could not find Node.js badge in README.md')
  }

  // Update TypeScript badge - using a more flexible approach
  const tsBadgeRegex = /\[\!\[TypeScript\].*?\]\(https:\/\/www\.typescriptlang\.org\/\)/g
  if (tsBadgeRegex.test(readmeContent)) {
    readmeContent = readmeContent.replace(
      tsBadgeRegex,
      `[![TypeScript](https://img.shields.io/badge/TypeScript-${typescriptVersion}-blue.svg)](https://www.typescriptlang.org/)`
    )
  } else {
    console.log('Warning: Could not find TypeScript badge in README.md')
  }

  // Write the updated README back to disk
  fs.writeFileSync(readmePath, readmeContent)
  console.log(`Updated README.md with npm version ${version}, Node.js version ${nodeVersion}, and TypeScript version ${typescriptVersion}`)
} catch (error) {
  console.error('Error updating README.md:', error)
}

// Update CLI package.json with the same version
try {
  // Read CLI package.json
  const cliPackageJson = JSON.parse(fs.readFileSync(cliPackageJsonPath, 'utf8'))

  // Update version
  cliPackageJson.version = version

  // Update dependency on main package to be exact
  if (cliPackageJson.dependencies && cliPackageJson.dependencies['@soulcraft/brainy']) {
    cliPackageJson.dependencies['@soulcraft/brainy'] = version
  }

  // Write the updated CLI package.json back to disk
  fs.writeFileSync(cliPackageJsonPath, JSON.stringify(cliPackageJson, null, 2))
  console.log(`Updated CLI package.json with version ${version} and exact dependency on main package`)
} catch (error) {
  console.error('Error updating CLI package.json:', error)
}