release.yml

name: Release Charts

on:
  push:
    branches:
      - main

jobs:
  release:
    permissions:
      contents: write # to push chart release and create a release (helm/chart-releaser-action)
      packages: write # needed for ghcr access
      id-token: write # needed for keyless signing

    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Fetch history
        run: git fetch --prune --unshallow

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

      - name: Prepare GPG key
        run: |
          gpg_dir=.cr-gpg
          mkdir "$gpg_dir"
          keyring="$gpg_dir/secring.gpg"
          base64 -d <<< "$GPG_KEYRING_BASE64" > "$keyring"
          passphrase_file="$gpg_dir/passphrase"
          echo "$GPG_PASSPHRASE" > "$passphrase_file"
          echo "CR_PASSPHRASE_FILE=$passphrase_file" >> "$GITHUB_ENV"
          echo "CR_KEYRING=$keyring" >> "$GITHUB_ENV"
        env:
          GPG_KEYRING_BASE64: "${{ secrets.GPG_KEYRING_BASE64 }}"
          GPG_PASSPHRASE: "${{ secrets.GPG_PASSPHRASE }}"

      - name: Install Helm
        uses: azure/setup-helm@v4
        with:
          version: v3.12.0

      - name: Run PreCommit
        uses: pre-commit/action@v3.0.1
      
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.6.1

      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct list-changed --target-branch ${{ github.event.repository.default_branch }})
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Run chart-testing (lint)
        if: steps.list-changed.outputs.changed == 'true'
        run: ct lint --target-branch ${{ github.event.repository.default_branch }}

      - name: Create kind cluster
        if: steps.list-changed.outputs.changed == 'true'
        uses: helm/kind-action@v1.10.0

      - name: Run chart-testing (install)
        if: steps.list-changed.outputs.changed == 'true'
        run: ct install --target-branch ${{ github.event.repository.default_branch }}
          
      - name: Run chart-releaser
        uses: helm/chart-releaser-action@v1.6.0
        env:
          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
          CR_GENERATE_RELEASE_NOTES: true
        with:
          config: cr.yml