---
# https://docs.corelightning.org/docs/release-checklist
name: "Release 🚀"
on:
  push:
    tags:
      - 'v[0-9]+.[0-9]+'
      - 'v[0-9]+.[0-9]+.[0-9]+'
      - 'v[0-9]+.[0-9]+[0-9a-z]+'
  workflow_dispatch:
    inputs:
      version:
        description: 'Release version'
        required: true
      create_release:
        description: Create a draft release
        default: no
        type: choice
        options:
          - yes
          - no

jobs:
  check:
    name: Check
    outputs:
      version: ${{ steps.capture.outputs.version }}
    runs-on: ubuntu-24.04
    steps:
      - name: Git checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.ref }}

      - name: Determine version
        run: |
          if [[ "${{ github.event.inputs.version }}" != "" ]]; then
            VERSION="${{ github.event.inputs.version }}"
          elif [ "${{ github.ref_type }}" == "tag" ]; then
            VERSION="${{ github.ref_name }}"
          else
            echo "No release version provided and no tag found."
            exit 1
          fi
          echo "VERSION=$VERSION" >> "$GITHUB_ENV"
          echo "Determined version: $VERSION"

      - name: Validate release
        run: tools/check-release.sh --version=${VERSION}

      - name: Catpure version output
        id: capture
        run: echo "version=${VERSION}" >> "$GITHUB_OUTPUT"

  releases:
    name: Releases
    needs: check
    runs-on: ubuntu-24.04
    strategy:
      fail-fast: false    # Let each build finish.
      matrix:
        target:
          - 'bin-Fedora'
          - 'bin-Ubuntu-focal'
          - 'bin-Ubuntu-jammy'
          - 'bin-Ubuntu-noble'
    steps:
      - name: Git checkout
        uses: actions/checkout@v4

      # tools/build-release.sh requires lowdown
      - name: Prepare base environment
        run: |
          sudo apt-get install -y lowdown
          ./configure

      - name: Build environment setup
        run: |
          distribution=$(echo ${{ matrix.target }} | cut -d'-' -f3)
          echo "Building base image for ${distribution}"
          sudo docker run --rm -v $(pwd):/build ubuntu:${distribution} bash -c "\
              apt-get update && \
              apt-get install -y debootstrap && \
              debootstrap ${distribution} /build/${distribution}"
          sudo tar -C ${distribution} -c . | docker import - ${distribution}

          # Build Docker image
          docker build -t cl-repro-${distribution} - < contrib/reprobuild/Dockerfile.${distribution}
        if: contains(matrix.target, 'Ubuntu')

      - name: Build release
        run: tools/build-release.sh ${{ matrix.target }}

      - name: Upload target artifacts
        uses: actions/upload-artifact@v4
        with:
          path: release/
          name: ${{ matrix.target }}
          if-no-files-found: error

  artifact:
    name: Construct release artifact
    needs:
      - check
      - releases
    env:
      version: ${{ needs.check.outputs.version }}
    runs-on: ubuntu-24.04
    steps:
      - name: Merge artifacts
        uses: actions/upload-artifact/merge@v4
        with:
          name: c-lightning-${{ env.version }}
          pattern: bin-*
          delete-merged: true

  release:
    name: Sign and prepare release draft
    needs:
      - check
      - artifact
    env:
      version: ${{ needs.check.outputs.version }}
    runs-on: ubuntu-24.04
    steps:
      - name: Git checkout
        uses: actions/checkout@v4

      - name: Download artifact
        uses: actions/download-artifact@v4
        with:
          name: c-lightning-${{ env.version }}
          path: release/

      - name: Import GPG keys
        id: gpg
        uses: crazy-max/ghaction-import-gpg@v6
        with:
          gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
          passphrase: ${{ secrets.GPG_PASSPHRASE }}
          trust_level: 5

      - name: Set default GPG key
        run: echo "default-key ${{ steps.gpg.outputs.keyid }}" >> ~/.gnupg/gpg.conf

      - name: Sign release
        run: |
          sudo apt-get install -y lowdown
          ./configure
          tools/build-release.sh --without-zip sign
          mv release/SHA256SUMS.asc${{ steps.gpg.outputs.keyid  }} release/SHA256SUMS.asc

      - name: Upload signed artifact
        uses: actions/upload-artifact@v4
        with:
          name: c-lightning-${{ env.version }}
          overwrite: true
          path: release/

      - name: Determine release data
        id: release_data
        run: |
          VERSION=${{ env.version }}
          CHANGELOG_VERSION=${VERSION#v}
          echo "CHANGELOG_VERSION=$CHANGELOG_VERSION"
          echo "changelog_version=$CHANGELOG_VERSION" >> "$GITHUB_OUTPUT"

          CHANGELOG_TITLE=$(grep "## \[${CHANGELOG_VERSION}\]" CHANGELOG.md)
          echo "CHANGELOG_TITLE=$CHANGELOG_TITLE"
          echo "changelog_title=$CHANGELOG_TITLE" >> "$GITHUB_OUTPUT"

          RELEASE_TITLE=$(echo $CHANGELOG_TITLE | cut -d'"' -f2)
          echo "RELEASE_TITLE=$RELEASE_TITLE"
          echo "release_title=$RELEASE_TITLE" >> "$GITHUB_OUTPUT"

      - name: Prepare release draft
        if: github.event_name == 'push' || (github.event_name == 'workflow_dispatch' && github.event.inputs.create_release == 'yes')
        uses: softprops/action-gh-release@v2
        with:
          name: "${{ env.version }} ${{ steps.release_data.outputs.release_title }}"
          tag_name: ${{ env.version }}
          draft: true
          prerelease: contains(env.version, "-rc")
          files: release/*
          fail_on_unmatched_files: true