Function addFileGlobRuleToGitignore

src/utils/git/gitignore.ts:53–99

(
  filename: string,
  cwd: string = getCwd(),
)

 * @param cwd The current working directory (optional)
 */
export async function addFileGlobRuleToGitignore(
  filename: string,
  cwd: string = getCwd(),
): Promise<void> {
  try {
    if (!(await dirIsInGitRepo(cwd))) {
      return
    }

    // First check if the pattern is already ignored by any gitignore file (including global)
    const gitignoreEntry = `**/${filename}`
    // For directory patterns (ending with /), check with a sample file inside
    const testPath = filename.endsWith('/')
      ? `${filename}sample-file.txt`
      : filename
    if (await isPathGitignored(testPath, cwd)) {
      // File is already ignored by existing patterns (local or global)
      return
    }

    // Use the global gitignore file in .config/git/ignore
    const globalGitignorePath = getGlobalGitignorePath()

    // Create the directory if it doesn't exist
    const configGitDir = dirname(globalGitignorePath)
    await mkdir(configGitDir, { recursive: true })

    // Add the entry to the global gitignore
    try {
      const content = await readFile(globalGitignorePath, { encoding: 'utf-8' })
      if (content.includes(gitignoreEntry)) {
        return // Pattern already exists, don't add again
      }
      await appendFile(globalGitignorePath, `\n${gitignoreEntry}\n`)
    } catch (e: unknown) {
      const code = getErrnoCode(e)
      if (code === 'ENOENT') {
        // Create global gitignore with entry
        await writeFile(globalGitignorePath, `${gitignoreEntry}\n`, 'utf-8')
      } else {
        throw e
      }
    }
  } catch (error) {
    logError(error)
  }
}