name: Automatic Release

on:
  schedule:
    - cron: '0 0 * * *'  # Scheduled to run every day at midnight
  workflow_dispatch: {}

jobs:
  create_release:
    runs-on: ubuntu-latest
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    strategy:
      matrix:
        folder: ['seafile-server', 'seahub', 'seahub-media', 'seafile-caddy']
      fail-fast: false

    steps:
    - name: Check out code
      uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
      with:
        fetch-depth: 0

    - name: Get Previous Tag and Build Number
      id: build_number
      run: |
        LATEST_TAG=$(git describe --tags --abbrev=0 --match "${{ matrix.folder }}-*" 2>/dev/null)
        echo "LATEST_TAG=$LATEST_TAG" >> $GITHUB_ENV

        PREVIOUS_VERSION=$(echo $LATEST_TAG | awk -F_ '{print $1}' | awk -F- '{print $2}')
        PREVIOUS_BUILD=$(echo $LATEST_TAG | awk -F_ '{print $2}')

        if [[ "${{ matrix.folder }}" == "seafile-caddy" ]]; then
          CURRENT_VERSION=$(grep -m 1 'FROM caddy:' ${{ matrix.folder }}/Dockerfile | awk -F':' '{print $2}' | awk -F'-' '{print $1}' | tr -d '\n')
        else
          CURRENT_VERSION=$(grep -m 1 'SEAFILE_VERSION' ${{ matrix.folder }}/Dockerfile | awk -F'SEAFILE_VERSION=' '{print $2}' | awk '{print $1}' | tr -d '\n')
        fi

        if [[ "$PREVIOUS_VERSION" != "$CURRENT_VERSION" ]] || [[ -z "$LATEST_TAG" ]]; then
          NEXT_BUILD="001"
        else
          NEXT_BUILD=$(printf "%03d" $((PREVIOUS_BUILD + 1)))
        fi
        echo "NEXT_BUILD=$NEXT_BUILD" >> $GITHUB_ENV

    - name: Determine Changed Directory and Extract Version
      id: dir_version
      run: |
        if [[ -z "$LATEST_TAG" ]]; then
          COMMIT_RANGE="--all"
        else
          COMMIT_RANGE="${LATEST_TAG}..HEAD"
        fi
        echo "COMMIT_RANGE=${LATEST_TAG}..HEAD" >> $GITHUB_ENV

        CHANGED_FOLDERS=$(git diff --name-only $COMMIT_RANGE | cut -d '/' -f1 | uniq)
        [[ "$CHANGED_FOLDERS" =~ "${{ matrix.folder }}" ]] && FOLDER_CHANGED="${{ matrix.folder }}" || FOLDER_CHANGED=""

        if [ -z "$FOLDER_CHANGED" ]; then
          echo "PROCEED=false" >> $GITHUB_ENV
          exit 0
        fi
        echo "FOLDER_CHANGED=$FOLDER_CHANGED" >> $GITHUB_ENV

        if [[ "$FOLDER_CHANGED" == "seafile-caddy" ]]; then
          CADDY_VERSION=$(grep -m 1 'FROM caddy:' $FOLDER_CHANGED/Dockerfile | awk -F':' '{print $2}' | awk -F'-' '{print $1}' | tr -d '\n')
          echo "SEAFILE_VERSION=$CADDY_VERSION" >> $GITHUB_ENV
        else
          SEAFILE_VERSION=$(grep -m 1 'SEAFILE_VERSION' $FOLDER_CHANGED/Dockerfile | awk -F'SEAFILE_VERSION=' '{print $2}' | awk '{print $1}' | tr -d '\n')
          echo "SEAFILE_VERSION=$SEAFILE_VERSION" >> $GITHUB_ENV
        fi

    - name: Get Commit Messages and Write to Markdown
      if: env.PROCEED != 'false'
      id: get_messages
      run: |
        MESSAGES=""
        for commit in $(git log --pretty=format:'%H' $COMMIT_RANGE); do
          if git diff-tree --no-commit-id --name-only -r $commit | grep "^$FOLDER_CHANGED/"; then
            MESSAGE=$(git log --format=%B -n 1 $commit)
            MESSAGES="$MESSAGES- $commit: $MESSAGE"$'\n'
          fi
        done

        if [ -z "$MESSAGES" ]; then
          echo "PROCEED=false" >> $GITHUB_ENV
          exit 0
        fi

        if [[ "$FOLDER_CHANGED" == "seafile-caddy" ]]; then
          echo "Caddy version: $SEAFILE_VERSION" > RELEASE_NOTES.md
        else
          echo "Seafile version: $SEAFILE_VERSION" > RELEASE_NOTES.md
        fi
        echo "Image build version: $NEXT_BUILD" >> RELEASE_NOTES.md
        echo "Changelog:" >> RELEASE_NOTES.md
        echo -e "$MESSAGES" >> RELEASE_NOTES.md

    - name: Create and Upload GitHub Release
      if: env.PROCEED != 'false'
      run: |
        gh release create ${{ env.FOLDER_CHANGED }}-${{ env.SEAFILE_VERSION }}_${{ env.NEXT_BUILD }} \
          -t ${{ env.FOLDER_CHANGED }}-${{ env.SEAFILE_VERSION }}_${{ env.NEXT_BUILD }} \
          -F RELEASE_NOTES.md \
          --draft=false \
          --prerelease=false