prerelease_on_version_bump.yaml

name: Prerelease on Version Bump

on:
  push:
    branches:
      - master

jobs:
  pre-release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # Fetch all history for all tags and branches

      - name: Detect single custom component directory
        id: detect_integration
        run: |
          DIR_COUNT=$(find custom_components/* -maxdepth 0 -type d | wc -l)
          if [ "$DIR_COUNT" -ne "1" ]; then
            echo "Error: There must be exactly one custom component directory." >&2
            exit 1
          fi
          echo "DOMAIN=$(basename $(find custom_components/* -maxdepth 0 -type d))" >> $GITHUB_ENV

      - name: Install JQ
        run: sudo apt-get install jq

      - name: Extract version from current commit
        id: current_version
        run: echo "CURRENT_VERSION=$(jq -r '.version' custom_components/$DOMAIN/manifest.json)" >> $GITHUB_ENV

      - name: Extract version from previous commit
        id: previous_version
        run: echo "PREVIOUS_VERSION=$(git show HEAD~:custom_components/$DOMAIN/manifest.json | jq -r '.version')" >> $GITHUB_ENV

      - name: Collect Changes
        if: ${{ env.CURRENT_VERSION != env.PREVIOUS_VERSION }}
        id: collect_changes
        run: |
          PREVIOUS_TAG=$(git rev-list -n 1 v${{ env.PREVIOUS_VERSION }})
          CURRENT_SHA=${{ github.sha }}
          if [ -z "$PREVIOUS_TAG" ]; then
            # Fallback in case there's no previous tag
            CHANGELOG=$(git log --pretty=format:"%s%n%b" $(git rev-list --max-parents=0 HEAD)..$CURRENT_SHA)
          else
            CHANGELOG=$(git log --pretty=format:"%s%n%b" $PREVIOUS_TAG..$CURRENT_SHA)
          fi
          
          # Initialize section variables
          ALL_FEATURES=""
          ALL_FIXES=""
          ALL_CHANGES=""
          ALL_OTHER=""

          # Process each commit message
          echo "$CHANGELOG" | while IFS= read -r line; do
            if [[ "$line" == "feat"* ]]; then
              ALL_FEATURES+="- $line\n"
            elif [[ "$line" == "fix"* ]]; then
              ALL_FIXES+="- $line\n"
            elif [[ "$line" == "refactor"* ]]; then
              ALL_CHANGES+="- $line\n"
            else
              ALL_OTHER+="- $line\n"
            fi
          done

          # Start with an empty formatted changelog
          CHANGELOG=""

          # Add sections if not empty
          if [ ! -z "$ALL_FEATURES" ]; then
            CHANGELOG+="## :new: Нововведения\n\n${ALL_FEATURES}\n"
          fi
          if [ ! -z "$ALL_FIXES" ]; then
            CHANGELOG+="## :bug: Исправления\n\n${ALL_FIXES}\n"
          fi
          if [ ! -z "$ALL_CHANGES" ]; then
            CHANGELOG+="## :wrench: Изменения\n\n${ALL_CHANGES}"
          fi
          if [ ! -z "$ALL_OTHER" ]; then
            CHANGELOG+="## :information_source: Примечания\n\n${ALL_OTHER}"
          fi

          # Save to GITHUB_ENV
          {
            echo "CHANGELOG<<EOF"
            echo -e "$CHANGELOG" | sed '$d'
            echo "EOF"
          } >> "$GITHUB_ENV"

      - name: Create Tag
        if: ${{ env.CURRENT_VERSION != env.PREVIOUS_VERSION }}
        uses: actions/github-script@v7
        with:
          script: |
            const version = '${{ steps.current_version.outputs.version }}';
            github.rest.git.createRef({
              owner: context.repo.owner,
              repo: context.repo.repo,
              ref: `refs/tags/v${version}`,
              sha: '${{ github.sha }}'
            });

      - name: Create Pre-release
        if: ${{ env.CURRENT_VERSION != env.PREVIOUS_VERSION }}
        uses: actions/github-script@v7
        with:
          script: |
            const {CHANGELOG, CURRENT_VERSION} = process.env;
            github.rest.repos.createRelease({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag_name: `v${CURRENT_VERSION}`,
              name: `v${CURRENT_VERSION}`,
              body: `${CHANGELOG}`,
              draft: false,
              prerelease: true,
            });