name: Chart Release

on:
  push:
    tags:
      - 'chart-v*'
  workflow_dispatch:

permissions:
  contents: write

jobs:
  prepare_release:
    runs-on: ubuntu-latest
    outputs:
      tag_name: ${{ steps.tag.outputs.tag_name }}
      chart_version: ${{ steps.tag.outputs.chart_version }}
      app_version: ${{ steps.tag.outputs.app_version }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Resolve chart release tag
        id: tag
        shell: bash
        run: |
          set -euo pipefail

          # Read the canonical version from the Rails app (single source of truth)
          APP_SEMVER=$(grep -oP '"\K[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.]+)?' config/initializers/version.rb | head -n 1 || true)
          if [ -z "$APP_SEMVER" ]; then
            echo "::error::Could not extract version from config/initializers/version.rb"
            exit 1
          fi
          echo "App version from version.rb: $APP_SEMVER"

          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            # Use the app version as the chart version (monorepo: versions stay in sync)
            TAG_NAME="chart-v${APP_SEMVER}"

            if git rev-parse "refs/tags/${TAG_NAME}" >/dev/null 2>&1; then
              echo "::error::Tag ${TAG_NAME} already exists. Bump the version in config/initializers/version.rb and charts/sure/Chart.yaml first."
              exit 1
            fi

            git config user.name "${GITHUB_ACTOR}"
            git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
            if ! git tag "$TAG_NAME"; then
              echo "::error::Failed to create tag ${TAG_NAME}"
              exit 1
            fi
            if ! git push origin "$TAG_NAME"; then
              echo "::error::Failed to push tag ${TAG_NAME} to origin"
              exit 1
            fi
          else
            TAG_NAME="${GITHUB_REF_NAME}"
          fi

          CHART_VERSION="${TAG_NAME#chart-v}"

          echo "tag_name=$TAG_NAME" >> "$GITHUB_OUTPUT"
          echo "chart_version=$CHART_VERSION" >> "$GITHUB_OUTPUT"
          echo "app_version=$APP_SEMVER" >> "$GITHUB_OUTPUT"

  publish_chart:
    needs: prepare_release
    uses: ./.github/workflows/helm-publish.yml
    with:
      chart_version: ${{ needs.prepare_release.outputs.chart_version }}
      app_version: ${{ needs.prepare_release.outputs.app_version }}
      update_gh_pages: true
    secrets: inherit

  release:
    needs: [prepare_release, publish_chart]
    runs-on: ubuntu-latest
    steps:
      - name: Download Helm chart artifact
        uses: actions/download-artifact@v4
        with:
          name: helm-chart-package
          path: ${{ runner.temp }}/helm-artifacts

      - name: Create chart GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ needs.prepare_release.outputs.tag_name }}
          name: ${{ needs.prepare_release.outputs.tag_name }}
          generate_release_notes: true
          files: ${{ runner.temp }}/helm-artifacts/*.tgz