name: Promote Stable Release to Docker Latest

# Manual workflow to promote a stable vX.Y.Z release to Docker mutable tags
# (:latest, :MAJOR, :MINOR) after the rc.1 soak window.
#
# Flow:
#   1. Validate that the input tag exists as a stable (non-prerelease) GitHub release.
#   2. Dispatch docker-release.yml with promote_to_latest=true for the given tag.
#      This triggers the promote-mutable-tags job (gated on workflow_dispatch
#      with promote_to_latest=true) which adds :latest/:MAJOR/:MINOR Docker aliases.
#
# Pre-conditions:
#   - The stable tag must already exist as a GitHub release (created automatically
#     by semantic-release when the PR merges to main).
#   - The immutable :<ver> Docker image must already be published and smoke-tested
#     (done automatically by docker-release.yml on the release: published event).
#   - Operator has verified the immutable image is stable (24h soak recommended).
#
# See docs/release-process.md for the full soak + promote procedure.

on:
  workflow_dispatch:
    inputs:
      tag:
        description: >
          Stable tag to promote, e.g. v7.80.0.
          Must already exist as a GitHub stable release with the immutable
          Docker :<ver> image already published and smoke-tested.
        required: true
        type: string

jobs:
  promote:
    name: Promote ${{ inputs.tag }} Docker mutable tags
    runs-on: [self-hosted, linux, x64, cliproxy]

    permissions:
      contents: read   # to verify the release
      actions: write   # to dispatch docker-release.yml

    steps:
      - name: Validate stable semver tag format
        env:
          TAG: ${{ inputs.tag }}
        run: |
          if [[ "${TAG}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "[OK] Tag format valid: ${TAG}"
          else
            echo "[X] Expected vX.Y.Z format, got: ${TAG}"
            echo "    For rc tags use docker-release.yml directly with promote_to_latest=true."
            exit 1
          fi

      - name: Verify release exists and is stable (not a prerelease)
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          TAG: ${{ inputs.tag }}
        run: |
          IS_PRERELEASE=$(gh release view "${TAG}" \
            --repo "${{ github.repository }}" \
            --json isPrerelease --jq '.isPrerelease')
          if [[ "${IS_PRERELEASE}" == "true" ]]; then
            echo "[X] Release ${TAG} is still a prerelease (isPrerelease=true)"
            echo "    Semantic-release publishes stable releases to main automatically."
            echo "    Check that the tag was created from a main merge, not a dev prerelease."
            exit 1
          fi
          if [[ "${IS_PRERELEASE}" != "false" ]]; then
            echo "[X] Could not read release state for ${TAG} (got: ${IS_PRERELEASE})"
            echo "    Verify the tag exists: gh release view ${TAG} --repo ${{ github.repository }}"
            exit 1
          fi
          echo "[OK] Release ${TAG} is stable — proceeding with Docker mutable tag promotion"

      - name: Verify immutable Docker image exists
        env:
          TAG: ${{ inputs.tag }}
        run: |
          TAG_SANS_V="${TAG}"
          TAG_SANS_V="${TAG_SANS_V#v}"
          OWNER_LOWER=$(echo "${GITHUB_REPOSITORY_OWNER}" | tr '[:upper:]' '[:lower:]')
          IMAGE_REF="ghcr.io/${OWNER_LOWER}/ccs:${TAG_SANS_V}"
          echo "[i] Verifying immutable image: ${IMAGE_REF}"
          if ! docker manifest inspect "${IMAGE_REF}" > /dev/null 2>&1; then
            echo "[X] Immutable image ${IMAGE_REF} not found in ghcr.io"
            echo "    Run docker-release.yml for this tag first, or wait for smoke tests to complete."
            exit 1
          fi
          echo "[OK] Immutable image ${IMAGE_REF} confirmed in registry"

      - name: Dispatch Docker mutable tag promotion
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          TAG: ${{ inputs.tag }}
        run: |
          RUN_URL=$(gh workflow run "Publish Docker Image" \
            --repo "${{ github.repository }}" \
            --field "tag=${TAG}" \
            --field "promote_to_latest=true" \
            2>&1)
          echo "[OK] Dispatched docker-release.yml with tag=${TAG} promote_to_latest=true"
          echo "[i] Monitor the run at: https://github.com/${{ github.repository }}/actions/workflows/docker-release.yml"
          echo "[i] After the run completes, verify with:"
          echo "    docker buildx imagetools inspect ghcr.io/${GITHUB_REPOSITORY_OWNER,,}/ccs:latest"