const https = require('https')
const fs = require('fs')
const path = require('path')

console.log('\n::*** Merge remote and local gitignore files to .gitignore')

// 下载远程 .gitignore_global 内容，不保存中间文件
const remoteUrl = 'https://git.tic.cc/npm/sysconfig/raw/branch/main/nixhome/.gitignore_global'
console.log('::--- fetching remote file:', remoteUrl)
https
  .get(remoteUrl, (res) => {
    if (res.statusCode !== 200) {
      console.error(`::--- failed to download: status ${res.statusCode}`)
      return
    }
    let globalContent = ''
    res.setEncoding('utf8')
    res.on('data', (chunk) => {
      globalContent += chunk
    })
    res.on('end', () => {
      const gitignoreLocalPath = path.resolve('./.gitignore.local.txt')
      console.log('::--- merging with local file:', gitignoreLocalPath)

      const gitignorePath = path.resolve('./.gitignore')
      console.log('::--- into final result:', gitignorePath)

      // 追加本地文件内容（如果存在）
      let localContent = ''
      if (fs.existsSync(gitignoreLocalPath)) {
        localContent = fs.readFileSync(gitignoreLocalPath, 'utf8')
      }

      // 合并写入 .gitignore
      fs.writeFileSync(gitignorePath, globalContent + '\n' + localContent)
      console.log('::--- Merged successfully!')
    })
  })
  .on('error', (err) => {
    console.error('::--- download error:', err.message)
  })