name: "Check conventional commit message"
description: "Checks if a value follows the conventional commit message specification."
inputs:
  value:
    description: "The value to test."
    required: true

runs:
  using: "composite"
  steps:
    - name: Check conventional commit message
      shell: bash
      env:
        INPUT_VALUE: ${{ inputs.value }}
      run: |
        set -eo pipefail

        CONVENTIONAL_COMMIT_REGEX='^(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)(\([[:alnum:]._-]+\))?(!)?: .+'

        printf 'Checking "%s"...\n' "$INPUT_VALUE"

        if ! printf '%s\n' "$INPUT_VALUE" | grep -qE "$CONVENTIONAL_COMMIT_REGEX"; then
          echo "::error title=Invalid Commit Message::Input '$INPUT_VALUE' is not a valid conventional commit message."
          echo "Please refer to the specification: https://www.conventionalcommits.org/en/v1.0.0/"
          exit 1
        else
          echo "::notice::Input is valid :)"
        fi