cksolo-build-publish.yml

name: Build, Publish & Release (CKPool Solo)

on:
  workflow_dispatch: {}
  schedule:
    - cron: "31 5 * * *"  # daily

concurrency:
  group: cksolo
  cancel-in-progress: false

env:
  DOCKERHUB_REPO: magicdude4eva/cksolo
  BUILD_CONTEXT: cksolo
  DOCKERFILE_PATH: cksolo/Dockerfile
  PLATFORM: linux/amd64

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: write  # to create a GitHub Release
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Detect latest solobtc commit
        id: latest
        run: |
          set -euo pipefail
          # Get latest commit on branch 'solobtc'
          fullsha=$(git ls-remote --heads https://bitbucket.org/ckolivas/ckpool-solo.git solobtc | awk '{print $1}')
          test -n "$fullsha"
          shortsha=${fullsha:0:12}
          echo "fullsha=$fullsha"   >> "$GITHUB_OUTPUT"
          echo "shortsha=$shortsha" >> "$GITHUB_OUTPUT"
          echo "Latest solobtc: $fullsha ($shortsha)"

      - name: Skip if tag already on Docker Hub
        id: hubcheck
        run: |
          set -euo pipefail
          tag="solobtc-${{ steps.latest.outputs.shortsha }}"
          code=$(curl -s -o /dev/null -w "%{http_code}" \
            "https://hub.docker.com/v2/repositories/${{ env.DOCKERHUB_REPO }}/tags/${tag}")
          echo "hub_status=$code" >> "$GITHUB_OUTPUT"
          if [ "$code" = "200" ]; then
            echo "skip=true" >> "$GITHUB_OUTPUT"
            echo "Tag $tag already exists - skipping."
          else
            echo "skip=false" >> "$GITHUB_OUTPUT"
            echo "Tag $tag not found - will build."
          fi

      - name: Set up Buildx
        if: steps.hubcheck.outputs.skip == 'false'
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Hub
        if: steps.hubcheck.outputs.skip == 'false'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push
        if: steps.hubcheck.outputs.skip == 'false'
        id: build
        uses: docker/build-push-action@v6
        with:
          context: ${{ env.BUILD_CONTEXT }}
          file: ${{ env.DOCKERFILE_PATH }}
          platforms: ${{ env.PLATFORM }}
          push: true
          build-args: |
            CKPOOL_REF=${{ steps.latest.outputs.fullsha }}
          tags: |
            ${{ env.DOCKERHUB_REPO }}:latest
            ${{ env.DOCKERHUB_REPO }}:solobtc-${{ steps.latest.outputs.shortsha }}
          labels: |
            org.opencontainers.image.source=https://github.com/${{ github.repository }}
            org.opencontainers.image.version=solobtc-${{ steps.latest.outputs.shortsha }}
            org.opencontainers.image.title=cksolo
            org.opencontainers.image.description=CKPool Solo - Lightweight stratum server for Bitcoin solo mining

      - name: Update Docker Hub description from ./cksolo/README.md
        if: steps.hubcheck.outputs.skip == 'false'
        uses: peter-evans/dockerhub-description@v4
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: ${{ env.DOCKERHUB_REPO }}
          readme-filepath: ./cksolo/README.md
          short-description: CKPool Solo - Lightweight stratum server for Bitcoin solo mining

      - name: Prepare release artifacts
        if: steps.hubcheck.outputs.skip == 'false'
        run: |
          set -euo pipefail
          echo "${{ steps.latest.outputs.fullsha }}" > upstream-fullsha.txt
          echo "solobtc-${{ steps.latest.outputs.shortsha }}" > image-tag.txt
          echo "${{ steps.build.outputs.digest }}" > image-digest.txt

      - name: Build commit changelog since last release
        if: steps.hubcheck.outputs.skip == 'false'
        id: changelog
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          set -euo pipefail

          new_full='${{ steps.latest.outputs.fullsha }}'
          mkdir -p _artifacts

          # Find previous cksolo release in this repo (if any) and get its upstream SHA
          prev_tag=$(gh release list --limit 200 --json tagName,isDraft,isPrerelease,publishedAt \
            --jq '[.[] | select(.tagName | startswith("cksolo-")) | select(.isDraft==false and .isPrerelease==false)] 
                  | sort_by(.publishedAt) | last // empty | .tagName')
          if [ -n "${prev_tag:-}" ]; then
            echo "Prev release: $prev_tag"
            gh release download "$prev_tag" -p upstream-fullsha.txt -O _artifacts/prev-upstream-fullsha.txt
            prev_full=$(cat _artifacts/prev-upstream-fullsha.txt | tr -d '\r\n')
          else
            echo "No previous cksolo release found."
            prev_full=""
          fi

          # Build commit list
          echo "# Changes in ckpool-solo (solobtc)" > _artifacts/release-body.md
          echo "" >> _artifacts/release-body.md
          echo "**Upstream commit:** \`${new_full}\`" >> _artifacts/release-body.md
          echo "" >> _artifacts/release-body.md

          if [ -n "$prev_full" ]; then
            echo "Comparing range: $prev_full..$new_full"
            git clone --filter=blob:none https://bitbucket.org/ckolivas/ckpool-solo.git upstream
            cd upstream
            git checkout solobtc
            # Ensure both commits exist locally
            git fetch origin "$prev_full" "$new_full" --depth=1 || git fetch origin solobtc --unshallow || true
            echo "" >> ../_artifacts/release-body.md
            echo "## Commits since last release" >> ../_artifacts/release-body.md
            echo "" >> ../_artifacts/release-body.md
            # Format: shortsha subject (author)
            if git merge-base --is-ancestor "$prev_full" "$new_full"; then
              git log --no-merges --pretty=format:'- %h %s (%an)' "$prev_full..$new_full" >> ../_artifacts/release-body.md
            else
              echo "_Note: previous SHA is not an ancestor of the new SHA; showing short log of solobtc branch._" >> ../_artifacts/release-body.md
              git log --no-merges --pretty=format:'- %h %s (%an)' -n 50 >> ../_artifacts/release-body.md
            fi
            cd ..
          else
            echo "_First release detected. Commit list not available._" >> _artifacts/release-body.md
          fi

          echo "" >> _artifacts/release-body.md
          echo "## Docker Hub" >> _artifacts/release-body.md
          echo "- https://hub.docker.com/r/${{ env.DOCKERHUB_REPO }}/tags?name=solobtc-${{ steps.latest.outputs.shortsha }}" >> _artifacts/release-body.md
          echo "- https://hub.docker.com/r/${{ env.DOCKERHUB_REPO }}/tags?name=latest" >> _artifacts/release-body.md
          echo "" >> _artifacts/release-body.md
          echo "## Image digest" >> _artifacts/release-body.md
          echo '```' >> _artifacts/release-body.md
          echo "${{ steps.build.outputs.digest }}" >> _artifacts/release-body.md
          echo '```' >> _artifacts/release-body.md

      - name: Create GitHub Release in btc-fullnode-stack
        if: steps.hubcheck.outputs.skip == 'false'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: cksolo-${{ steps.latest.outputs.shortsha }}
          name: CKPool Solo (solobtc @ ${{ steps.latest.outputs.shortsha }})
          target_commitish: ${{ github.sha }}
          generate_release_notes: false
          body_path: _artifacts/release-body.md
          files: |
            upstream-fullsha.txt
            image-tag.txt
            image-digest.txt

      - name: Summary
        run: |
          echo "Upstream full SHA: ${{ steps.latest.outputs.fullsha }}"
          echo "Short SHA:        ${{ steps.latest.outputs.shortsha }}"
          echo "Hub status:       ${{ steps.hubcheck.outputs.hub_status }}"
          echo "Skipped:          ${{ steps.hubcheck.outputs.skip }}"