release-on-version-bump.yml

name: Release on Version Bump

on:
  pull_request:
    types: [closed]

jobs:
  release:
    if: ${{ github.event.pull_request.merged }} == true && ${{ github.event.pull_request.base.ref }} == 'main'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    env:
      PREV_SHA: ''
      VERSION: ''
      PREV_VERSION: ''
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Get previous commit hash
        id: prev_commit
        run: |
          PREV_SHA=$(git rev-parse HEAD~1 2>/dev/null || echo "")
          echo "PREV_SHA=$PREV_SHA" >> $GITHUB_ENV

      - name: Get current version
        id: current_version
        run: |
          VERSION=$(jq -r '.version' custom_components/sensus_analytics/manifest.json)
          echo "VERSION=$VERSION" >> $GITHUB_ENV

      - name: Get previous version
        id: previous_version
        env:
          PREV_SHA: ${{ env.PREV_SHA }}
        run: |
          if [ -z "$PREV_SHA" ]; then
            echo "No previous commit found. Setting PREV_VERSION to empty."
            PREV_VERSION=""
          else
            PREV_VERSION=$(git show "$PREV_SHA":custom_components/sensus_analytics/manifest.json 2>/dev/null | jq -r '.version' || echo "")
          fi
          echo "PREV_VERSION=$PREV_VERSION" >> $GITHUB_ENV

      - name: Compare versions
        id: version_compare
        env:
          VERSION: ${{ env.VERSION }}
          PREV_VERSION: ${{ env.PREV_VERSION }}
        run: |
          if [ "$VERSION" != "$PREV_VERSION" ] && [[ "$VERSION" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "Version has changed from $PREV_VERSION to $VERSION"
            echo "version_changed=true" >> $GITHUB_OUTPUT
          else
            echo "Version has not changed or does not match the format v*.*.*"
            echo "version_changed=false" >> $GITHUB_OUTPUT
          fi

      - name: Create Release
        if: steps.version_compare.outputs.version_changed == 'true'
        uses: ncipollo/release-action@v1
        with:
          tag: ${{ env.VERSION }}
          name: ${{ github.event.pull_request.title }}
          body: ${{ github.event.pull_request.body }}
          draft: false
          prerelease: false
          token: ${{ secrets.GITHUB_TOKEN }}
          artifacts: |
            custom_components/**
          commit: ${{ github.sha }}