name: Build + deploy releases

# Cuts a channel/release bundle (./build alpha|beta|release [version])
# and rsyncs it to /srv/zddc/releases/ via ./deploy --releases. Runs on
# this host directly (label: host) — same shell environment the operator
# uses for manual cuts, so behavior is identical between the two paths.
#
# Triggers:
#   - workflow_dispatch — pick channel + optional version from the UI.
#   - push to a tag matching zddc-server-v[0-9]+.[0-9]+.[0-9]+ —
#     the canonical "stable cut" tag in our six-tag lockstep set
#     (one per tool: archive-vX.Y.Z, transmittal-vX.Y.Z, ..., zddc-server-vX.Y.Z).
#     Filtering on zddc-server-v* ensures exactly one workflow run per cut
#     even though six tags push together. Runner re-cuts from the tagged
#     commit for reproducibility — _promote_stable in shared/build-lib.sh
#     is idempotent re: tag creation, so rerunning at the same HEAD is a
#     no-op for the tags.

on:
  workflow_dispatch:
    inputs:
      channel:
        description: 'Channel to cut'
        required: true
        type: choice
        default: alpha
        options:
          - alpha
          - beta
          - release
      version:
        description: 'Stable version (e.g. 0.1.0). Leave blank for coordinated next-stable. Ignored for alpha/beta.'
        required: false
        default: ''
  push:
    tags:
      - 'zddc-server-v[0-9]+.[0-9]+.[0-9]+'

jobs:
  build-and-deploy:
    runs-on: host
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          # ./build's _coordinated_next_stable reads tags across all six
          # tools; full history + tags are required.
          fetch-depth: 0

      - name: Resolve channel + version
        id: meta
        run: |
          set -eu
          if [ "$GITHUB_EVENT_NAME" = "push" ]; then
              # Tag push: refs/tags/zddc-server-vX.Y.Z → channel=release, version=X.Y.Z
              VERSION="${GITHUB_REF#refs/tags/zddc-server-v}"
              echo "channel=release" >> "$GITHUB_OUTPUT"
              echo "version=$VERSION" >> "$GITHUB_OUTPUT"
          else
              echo "channel=${{ inputs.channel }}" >> "$GITHUB_OUTPUT"
              echo "version=${{ inputs.version }}" >> "$GITHUB_OUTPUT"
          fi

      - name: Build
        run: |
          set -eu
          CH="${{ steps.meta.outputs.channel }}"
          VER="${{ steps.meta.outputs.version }}"
          if [ "$CH" = "release" ] && [ -n "$VER" ]; then
              ./build release "$VER"
          else
              ./build "$CH"
          fi

      - name: Deploy releases
        run: ./deploy --releases

      - name: Verify channel mirror resolves
        run: |
          set -eu
          CH="${{ steps.meta.outputs.channel }}"
          MIRROR=$([ "$CH" = "release" ] && echo stable || echo "$CH")
          # Runner is in a container on caddy-net; reach Caddy by container
          # name (`caddy`). --connect-to keeps the SNI / Host as the real
          # public hostname so the right vhost matches; -k skips cert
          # verify (Caddy uses a self-signed `tls internal` cert).
          curl -ksI --connect-to "zddc.varasys.io:8443:caddy:8443" \
              "https://zddc.varasys.io:8443/releases/archive_${MIRROR}.html" \
              | head -3

  # On a stable cut (tag push), auto-bump tnd-zddc-chart's appVersion to
  # match the new ZDDC version, then push to the chart's main branch.
  # The chart's pipeline-prod fires automatically on its own main push,
  # rebuilds the prod Docker image with a new tag (image tag derives from
  # Chart.AppVersion), and helm rolls the deployment. Net effect: a
  # single ZDDC stable cut deploys to BMCD prod with zero manual steps
  # on the chart repo. Dispatch-only invocations of this workflow
  # (workflow_dispatch with channel=release) skip — the chart bump is
  # only meaningful when the actual git tag exists at refs/tags/.
  notify-chart-prod:
    needs: build-and-deploy
    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/zddc-server-v')
    runs-on: host
    env:
      CHART_GITHUB_TOKEN: ${{ secrets.CHART_GITHUB_TOKEN }}
    steps:
      - name: Auto-bump tnd-zddc-chart appVersion + push to chart main
        run: |
          set -eu
          VERSION="${GITHUB_REF#refs/tags/zddc-server-v}"
          echo "ZDDC stable cut: $VERSION"

          # Sanity: make sure the secret was injected. If not, fail loud
          # (rather than silently failing on the git push later).
          if [ -z "${CHART_GITHUB_TOKEN:-}" ]; then
              echo "::error::CHART_GITHUB_TOKEN secret not set on this repo" >&2
              exit 1
          fi

          # Clone tnd-zddc-chart into a tmp workspace. Shallow is fine —
          # we only ever produce one commit on top of main.
          TMP=$(mktemp -d)
          cd "$TMP"
          git clone --depth=20 --branch=main \
              "https://oauth2:${CHART_GITHUB_TOKEN}@github.com/burnsmcd/tnd-zddc-chart.git"
          cd tnd-zddc-chart

          # Idempotent: skip if appVersion already matches the new ZDDC
          # version (e.g. if the operator already manually bumped it, or
          # this job is being re-run on the same tag).
          CURRENT=$(grep '^appVersion:' chart/Chart.yaml | sed -E 's/^appVersion: *"?([^"]*)"?.*/\1/')
          if [ "$CURRENT" = "$VERSION" ]; then
              echo "Chart appVersion already at $VERSION; nothing to do"
              exit 0
          fi

          # Bump appVersion to track ZDDC stable. Also bump the chart's
          # own version (patch) so each deploy carries a unique chart
          # identity in JFrog — clean release history vs. silent rev
          # within the same chart version.
          sed -i "s/^appVersion: .*/appVersion: \"$VERSION\"/" chart/Chart.yaml
          OLD_CHART_VER=$(grep '^version:' chart/Chart.yaml | awk '{print $2}')
          MAJ=$(echo "$OLD_CHART_VER" | cut -d. -f1)
          MIN=$(echo "$OLD_CHART_VER" | cut -d. -f2)
          PAT=$(echo "$OLD_CHART_VER" | cut -d. -f3)
          NEW_PAT=$((PAT + 1))
          NEW_CHART_VER="$MAJ.$MIN.$NEW_PAT"
          sed -i "s/^version: .*/version: $NEW_CHART_VER/" chart/Chart.yaml

          echo "  appVersion: $CURRENT → $VERSION"
          echo "  version:    $OLD_CHART_VER → $NEW_CHART_VER"

          git config user.name "ZDDC Release Bot"
          git config user.email "noreply@zddc.varasys.io"
          git add chart/Chart.yaml
          git commit \
              -m "chore(chart): auto-bump appVersion to $VERSION (ZDDC stable cut)" \
              -m "Triggered by zddc-server-v$VERSION tag push on git.varasys.io/VARASYS/ZDDC. Bumps appVersion so the prod Docker image is tagged zddc:$VERSION, ensuring kubelet pulls a fresh image on the next helm upgrade. Chart version bumped to $NEW_CHART_VER (patch) so JFrog has a clean chart history per deploy." \
              -m "Auto-generated by .forgejo/workflows/deploy-release.yml's notify-chart-prod job. Do not edit manually — the next ZDDC stable cut will overwrite this commit's changes."
          git push origin main
          echo "pushed chart appVersion bump - BMCD pipeline-prod will fire"