action.yml

name: directories
description: Collects list of Terraform directories
outputs:
  directories:
    description: Array of directories that contain a `versions.tf` file
    value: ${{ steps.search.outputs.directories }}

runs:
  using: composite
  steps:
    - name: Get Terraform directories for evaluation
      shell: bash
      id: search
      run: |
        cat > directories.py <<EOL
        import json
        import mmap
        import os
        import re
        import glob
        from pathlib import Path


        def get_directories():
            """
            Return all Terraform (*.tf) files that contain the 'required_version'
                string, but does not contain 'wrapper' in the path.
            """

            terraform_files = glob.glob('./**/*.tf', recursive=True)
            directories = []

            for file in terraform_files:
                p = Path(file)
                if p.is_dir():
                  continue
                file_size = os.stat(file)

                if file_size.st_size > 0:
                    with open(file, 'rb', 0) as rfile:
                        contents = mmap.mmap(rfile.fileno(), 0, access=mmap.ACCESS_READ)
                        if contents.find(b'required_version') != -1 and 'wrapper' not in file:
                            formatted = "/".join(file.split('/')[:-1])
                            directories.append(formatted)

            return json.dumps([x for x in directories if not re.match(r'^.+/_', x)])


        if __name__ == '__main__':
            print(get_directories())
        EOL

        DIRS=$(python ./directories.py)
        echo $DIRS
        rm directories.py
        echo "directories=$DIRS" >> $GITHUB_OUTPUT