helm-release.yml

name: Helm Release

on:
  push:
    branches:
      - main

jobs:
  detect-changes:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
      any_changed: ${{ steps.set-matrix.outputs.any_changed }}
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Detect changed charts with version bumps
        id: set-matrix
        run: |
          # Get changed files in the last commit
          CHANGED_FILES=$(git diff --name-only HEAD~1 HEAD)
          
          echo "Changed files:"
          echo "$CHANGED_FILES"
          
          # Find charts with version changes
          CHARTS_TO_RELEASE=()
          
          # Check if openlit chart changed and version was bumped
          if echo "$CHANGED_FILES" | grep -E "^charts/openlit/" > /dev/null; then
            if echo "$CHANGED_FILES" | grep -E "^charts/openlit/Chart\.yaml$" > /dev/null; then
              # Chart.yaml was modified, check if version changed
              OLD_VERSION=$(git show HEAD~1:charts/openlit/Chart.yaml | grep '^version:' | awk '{print $2}')
              NEW_VERSION=$(grep '^version:' charts/openlit/Chart.yaml | awk '{print $2}')
              if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
                echo "openlit version bumped from $OLD_VERSION to $NEW_VERSION"
                CHARTS_TO_RELEASE+=("openlit")
              else
                echo "openlit Chart.yaml changed but version not bumped ($OLD_VERSION)"
              fi
            else
              echo "openlit files changed but Chart.yaml not modified - no release needed"
            fi
          fi
          
          # Check if openlit-operator chart changed and version was bumped
          if echo "$CHANGED_FILES" | grep -E "^charts/openlit-operator/" > /dev/null; then
            if echo "$CHANGED_FILES" | grep -E "^charts/openlit-operator/Chart\.yaml$" > /dev/null; then
              # Chart.yaml was modified, check if version changed
              OLD_VERSION=$(git show HEAD~1:charts/openlit-operator/Chart.yaml | grep '^version:' | awk '{print $2}')
              NEW_VERSION=$(grep '^version:' charts/openlit-operator/Chart.yaml | awk '{print $2}')
              if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
                echo "openlit-operator version bumped from $OLD_VERSION to $NEW_VERSION"
                CHARTS_TO_RELEASE+=("openlit-operator")
              else
                echo "openlit-operator Chart.yaml changed but version not bumped ($OLD_VERSION)"
              fi
            else
              echo "openlit-operator files changed but Chart.yaml not modified - no release needed"
            fi
          fi
          
          # Create matrix and set any_changed flag
          if [ ${#CHARTS_TO_RELEASE[@]} -eq 0 ]; then
            echo "matrix={\"include\":[]}" >> "$GITHUB_OUTPUT"
            echo "any_changed=false" >> "$GITHUB_OUTPUT"
            echo "No charts need to be released"
          else
            # Build JSON matrix manually
            MATRIX_JSON="{\"include\":["
            for i in "${!CHARTS_TO_RELEASE[@]}"; do
              if [ $i -gt 0 ]; then
                MATRIX_JSON="$MATRIX_JSON,"
              fi
              MATRIX_JSON="$MATRIX_JSON{\"chart\":\"${CHARTS_TO_RELEASE[$i]}\"}"
            done
            MATRIX_JSON="$MATRIX_JSON]}"
            
            echo "matrix=$MATRIX_JSON" >> "$GITHUB_OUTPUT"
            echo "any_changed=true" >> "$GITHUB_OUTPUT"
            echo "Charts ready for release: ${CHARTS_TO_RELEASE[*]}"
          fi

  release:
    needs: detect-changes
    if: needs.detect-changes.outputs.any_changed == 'true'
    permissions:
      contents: write
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "$GITHUB_ACTOR"
          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"

      - name: Install Helm
        uses: azure/setup-helm@v4

      - name: Add Helm repositories
        run: |
          echo "📦 Adding OpenLIT Helm repository"
          helm repo add openlit https://openlit.github.io/helm/
          helm repo update
          echo "✅ Helm repositories added and updated"

      - name: Build chart dependencies
        run: |
          echo "📦 Building dependencies for all charts with dependencies"
          for chart in charts/*/Chart.yaml; do
            chart_dir=$(dirname "$chart")
            if [ -f "$chart_dir/Chart.yaml" ] && grep -q "^dependencies:" "$chart_dir/Chart.yaml"; then
              echo "Building dependencies for $chart_dir"
              cd "$chart_dir"
              helm dependency build
              cd - > /dev/null
            fi
          done
          echo "✅ All chart dependencies built"

      - name: Run chart-releaser
        uses: helm/chart-releaser-action@v1.6.0
        with:
          skip_existing: true
        env:
          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"