name: Publish blog immutable package

# Every main push builds and tests the release. Publication additionally needs
# the activation variable, the reviewed repository gate and the scoped package
# secrets; without them nothing is published. Publication never deploys:
# selecting the release is a reviewed change to gitops-sandbox/stacks.yml.

on:
  push:
    branches: [main]
  workflow_dispatch:
    inputs:
      revision:
        description: Full public/blog commit to publish
        required: true

permissions:
  contents: read

concurrency:
  group: blog-publish
  cancel-in-progress: false

jobs:
  validate:
    runs-on: ubuntu-latest
    container:
      image: git.librete.ch/public/runner-image:v0.2.0@sha256:f60c587d3c0b0aac04a572db5349e27672bf76baec2ce547a3dcc28cebcf1b7e
    timeout-minutes: 15
    env:
      REQUESTED_REVISION: ${{ inputs.revision || github.sha }}
    steps:
      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262
        with:
          ref: ${{ inputs.revision || github.sha }}
          fetch-depth: 0
          submodules: true

      - name: Validate requested source, tests and build
        run: |
          set -eu
          test "$(git rev-parse HEAD)" = "$REQUESTED_REVISION"
          (cd delivery && python3 -m unittest discover -s tests -v)
          delivery/build.sh

  publish:
    needs: validate
    if: ${{ vars.BLOG_PACKAGE_PUBLISH_ENABLED == 'true' }}
    runs-on: ubuntu-latest
    container:
      image: git.librete.ch/public/runner-image:v0.2.0@sha256:f60c587d3c0b0aac04a572db5349e27672bf76baec2ce547a3dcc28cebcf1b7e
    timeout-minutes: 15
    env:
      ACTIVATION: ${{ vars.BLOG_PACKAGE_PUBLISH_ENABLED }}
      REQUESTED_REVISION: ${{ inputs.revision || github.sha }}
      STATIC_PACKAGE_USER: ${{ secrets.BLOG_PACKAGE_USER }}
      STATIC_PACKAGE_TOKEN: ${{ secrets.BLOG_PACKAGE_TOKEN }}
    steps:
      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262
        with:
          ref: ${{ inputs.revision || github.sha }}
          fetch-depth: 0
          submodules: true

      - name: Enforce reviewed publication gate
        run: |
          set -eu
          test "$ACTIVATION" = true
          python3 delivery/scripts/delivery_gate.py package_publish \
            --config delivery/.delivery/config.json
          test -n "$STATIC_PACKAGE_USER"
          test -n "$STATIC_PACKAGE_TOKEN"

      - name: Build and publish immutable package files
        run: |
          set -eu
          test "$(git rev-parse HEAD)" = "$REQUESTED_REVISION"
          delivery/build.sh
          python3 delivery/scripts/generic_package.py \
            --registry "${{ gitea.server_url }}" \
            --owner public \
            --package blog-site \
            --revision "$REQUESTED_REVISION" \
            --archive delivery/.build/site.tar.gz \
            --checksum delivery/.build/site.tar.gz.sha256 \
            --coordinate delivery/.build/release-coordinate.json \
            > delivery/.build/published.json
          cat delivery/.build/published.json
          echo "Select this release with a reviewed gitops-sandbox stacks.yml change:"
          python3 - delivery/.build/published.json <<'PY'
          import json, sys
          c = json.load(open(sys.argv[1]))
          print("  blog:")
          for key in ("revision", "artifact_url", "artifact_digest"):
              print(f"    {key}: {c[key]}")
          PY