action.yml

#
# This code is Copyright (C) 2026 The Cambridge Crystallographic Data Centre (CCDC)
# of 12 Union Road, Cambridge CB2 1EZ, UK and a proprietary work of CCDC. This
# code may not be used, reproduced, translated, modified, disassembled or
# copied, except in accordance with a valid licence agreement with CCDC and
# may NOT be disclosed or redistributed in any form, either in whole or in
# part, to any third party. All copies of this code made in accordance with a
# valid licence agreement as referred to above must contain this copyright
# notice.
#
# No representations, warranties, or liabilities are expressed or implied in
# the supply of this code by CCDC, its servants or agents, except where such
# exclusion or limitation is prohibited, void or unenforceable under governing
# law.
#
name: CCDC File Checks
author: CCDC
description: Check changed files for compliance
inputs:
  commitMessage:
    description: 'The commit message'
    required: true
  licenseCheck:
    description: 'Validate CCDC copyright and license headers on changed files (true/false)'
    required: false
    default: 'false'
runs:
  using: composite
  steps:
    - name: Install copywrite
      if: ${{ inputs.licenseCheck == 'true' }}
      uses: hashicorp/setup-copywrite@v1.1.3

    - name: Validate Header Compliance
      if: ${{ inputs.licenseCheck == 'true' }}
      shell: bash
      env:
        COPYWRITE_HOOK_ROOT: ${{ github.action_path }}
        GITHUB_EVENT_BEFORE: ${{ github.event.before }}
      run: |
        copywrite --version

        CHANGED_FILES=()
        if [ "${GITHUB_EVENT_NAME:-}" = "pull_request" ] && [ -n "${GITHUB_BASE_REF:-}" ]; then
          DIFF_REF="origin/${GITHUB_BASE_REF}"
          if ! git rev-parse --verify "$DIFF_REF" >/dev/null 2>&1; then
            DIFF_REF="remotes/origin/${GITHUB_BASE_REF}"
          fi
          if ! git rev-parse --verify "$DIFF_REF" >/dev/null 2>&1; then
            DIFF_REF="${GITHUB_BASE_REF}"
          fi
          if ! git rev-parse --verify "$DIFF_REF" >/dev/null 2>&1; then
            echo "Unable to resolve pull request base ref: ${GITHUB_BASE_REF}" >&2
            exit 1
          fi
          while IFS= read -r file; do
            [ -n "$file" ] && CHANGED_FILES+=("$file")
          done < <(git diff --name-only --diff-filter=d "${DIFF_REF}...HEAD")
        elif [ "${GITHUB_EVENT_NAME:-}" = "push" ]; then
          if [[ "${GITHUB_EVENT_BEFORE:-}" =~ ^0+$ ]]; then
            while IFS= read -r file; do
              [ -n "$file" ] && CHANGED_FILES+=("$file")
            done < <(git diff-tree --root --no-commit-id --name-only --diff-filter=d -r HEAD)
          else
            if [ -z "${GITHUB_EVENT_BEFORE:-}" ] || ! git rev-parse --verify "${GITHUB_EVENT_BEFORE}^{commit}" >/dev/null 2>&1; then
              echo "Unable to resolve push baseline: ${GITHUB_EVENT_BEFORE:-<empty>}" >&2
              exit 1
            fi
            while IFS= read -r file; do
              [ -n "$file" ] && CHANGED_FILES+=("$file")
            done < <(git diff --name-only --diff-filter=d "${GITHUB_EVENT_BEFORE}..HEAD")
          fi
        elif git rev-parse --verify HEAD^ >/dev/null 2>&1; then
          while IFS= read -r file; do
            [ -n "$file" ] && CHANGED_FILES+=("$file")
          done < <(git diff --name-only --diff-filter=d HEAD^..HEAD)
        else
          while IFS= read -r file; do
            [ -n "$file" ] && CHANGED_FILES+=("$file")
          done < <(git diff-tree --root --no-commit-id --name-only --diff-filter=d -r HEAD)
        fi

        if [ ${#CHANGED_FILES[@]} -gt 0 ]; then
          echo "Checking ${#CHANGED_FILES[@]} changed file(s) for header compliance..."
          copywrite headers \
            --config "$GITHUB_ACTION_PATH/main/copywrite/.copywrite.hcl" \
            --plan \
            -- \
            "${CHANGED_FILES[@]}"
        else
          echo "No added or modified files found to check for header compliance."
        fi

    - name: Run file compliance check
      shell: bash
      env:
        INPUT_COMMITMESSAGE: ${{ inputs.commitMessage }}
        GITHUB_EVENT_BEFORE: ${{ github.event.before }}
      run: |
        python3 "$GITHUB_ACTION_PATH/main.py"

branding:
  icon: check-square
  color: green