action.yml

name: Update Files
description: |
  Updates all common project files by pulling them from a central repository
  and creating a pull request in the target repository if there are changes.

inputs:
  source-repo:
    description: The URL of the repository containing the common files.
    default: https://github.com/BetonQuest/CommonProjectFiles
  branch-name:
    description: The branch name to use for syncing changes.
    default: CommonProjectFiles-Sync
  ignored-files:
    description: |
      A comma-separated list of additional files or directories to ignore during the sync process.
      Example: .github,custom-config.json
    default: ''
  include-default-ignored-files:
    description: |
      A comma-separated list of entries from the default ignore list to re-add (i.e., include back during the sync).
      Example: LICENSE,README.md
    default: ''
  token:
    description: The GitHub token to use for cloning the target repository.
    default: ${{ github.token }}

runs:
  using: composite
  steps:
    - name: Checkout Target Repository
      uses: actions/checkout@v4

    - name: Clone Source Repository
      shell: bash --noprofile --norc -euo pipefail {0}
      run: |
        git clone --depth 1 ${{ inputs.source-repo }} CommonProjectFiles

    - name: Prepare Ignored Files
      shell: bash --noprofile --norc -euo pipefail {0}
      run: |
        DEFAULT_IGNORED_FILES=".git,README.md,LICENSE,action.yml,.github/dependabot.yml,.github/workflows/editorconfig.yml"
        IGNORE_FILES="${DEFAULT_IGNORED_FILES}"
        if [[ -n "${{ inputs.ignored-files }}" ]]; then
          IGNORE_FILES+=",${{ inputs.ignored-files }}"
        fi
        if [[ -n "${{ inputs.include-default-ignored-files }}" ]]; then
          IFS=',' read -ra READD_ENTRIES <<< "${{ inputs.include-default-ignored-files }}"
          for ENTRY in "${READD_ENTRIES[@]}"; do
            IGNORE_FILES=$(echo "$IGNORE_FILES" | sed "s~,$ENTRY~~g")
            IGNORE_FILES=$(echo "$IGNORE_FILES" | sed "s~^$ENTRY,~~g")
            IGNORE_FILES=$(echo "$IGNORE_FILES" | sed "s~,$ENTRY\$~~g")
          done
        fi
        echo "ignore_files=${IGNORE_FILES}" >> $GITHUB_ENV

    - name: Sync Files
      shell: bash --noprofile --norc -euo pipefail {0}
      run: |
        IFS=',' read -ra IGNORE_FILES <<< ${{ env.ignore_files }}
        cd CommonProjectFiles
        find . -mindepth 1 | while read -r FILE; do
          RELATIVE_PATH="${FILE#./}"
          for IGNORE in "${IGNORE_FILES[@]}"; do
            if [[ "$RELATIVE_PATH" == "$IGNORE" || "$RELATIVE_PATH" == "$IGNORE/"* ]]; then
              rm -rf "$FILE"
              break
            fi
          done
        done
        cd ..
        sync
        rsync -av CommonProjectFiles/ ./
        rm -rf CommonProjectFiles

    - name: Create Pull Request
      uses: peter-evans/create-pull-request@v7
      with:
        branch: ${{ inputs.branch-name }}
        title: "Sync common files"
        body: |
          This pull request updates the repository with the latest common files from the source repository.
        commit-message: "Sync common files from central repository"
        delete-branch: true
        token: '${{ inputs.token }}'