name: Update Repository

# Controls when the workflow will run
on:
  #push:
    # If the configuration has changed, this ensures we apply updates.
    #branches: [ main ]

  schedule:
    # Upstream releases around once per month, so twice a week should be fine.
    - cron:  '23 14 * * mon,thu'

  workflow_dispatch:

jobs:
  check-upstream:
    name: Check for a new releases upstream
    runs-on: ubuntu-latest

    outputs:
      innernet_release: ${{ steps.check-latest-release.outputs.innernet_release }}
      tarball_url: ${{ steps.check-latest-release.outputs.tarball_url }}
      new_release_exists: ${{ steps.check-repo-release.outputs.new_release_exists }}
      
    steps:
      - name: Install Distro Dependencies
        run: sudo env DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends --yes jq liblzma-dev reprepro

      - name: Check Latest Release
        id: check-latest-release
        run: |
          wget -O- \
               -H'Accept: application/json' \
               "https://api.github.com/repos/tonarino/innernet/releases/latest" \
              | jq -r '(.name + " " + .tarball_url)' \
              | (
                read release tarball_url
                echo "innernet_release=$release" >>"$GITHUB_OUTPUT"
                echo "tarball_url=$tarball_url" >>"$GITHUB_OUTPUT"
                echo "Latest release: $release"
              )

      - name: Checkout
        uses: actions/checkout@v2
        with:
          # See https://github.com/marketplace/actions/github-push
          persist-credentials: false
          fetch-depth: 0

      - name: Check Repo Release
        id: check-repo-release
        run: |
          # Note the leading v to match the Git tag.
          indexed=v$(reprepro -b debian --list-format '${version}\n' listmatched unstable innernet)
          echo "Repo release: $indexed"
          if [ "x$indexed" = "x${{ steps.check-latest-release.outputs.innernet_release }}" ]; then
            echo "new_release_exists=false" >>"$GITHUB_OUTPUT"
          else
            echo "new_release_exists=true" >>"$GITHUB_OUTPUT"
          fi
          
      - name: Show Output
        id: show-output
        run: |
          echo "## Job Outputs" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`innernet_release=${{ steps.check-latest-release.outputs.innernet_release }}\`" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`new_release_exists=${{ steps.check-repo-release.outputs.new_release_exists }}\`" >>"$GITHUB_STEP_SUMMARY"

  build-deb:
    name: Build DEB Packages
    runs-on: ubuntu-latest
    needs: [check-upstream]
    if: ${{ needs.check-upstream.outputs.new_release_exists == 'true' }}

    steps:
      - name: Install Distro Dependencies
        run: sudo env DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends --yes dpkg-dev liblzma-dev

      - name: Download Latest Release
        id: download-release
        run: |
          wget -O- "${{ needs.check-upstream.outputs.tarball_url }}" | tar xz
          mv tonarino-innernet-*/* .
          rm -fr tonarino-innernet-*

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal
          override: true

      - name: Install cargo-deb
        run: |
          type -p cargo-deb || cargo install cargo-deb

      - name: Set Up Rust Cache
        uses: Swatinem/rust-cache@v1
      
      - name: Build Client DEB
        uses: actions-rs/cargo@v1
        with:
          command: deb
          args: -p client
      
      - name: Build Server DEB
        uses: actions-rs/cargo@v1
        with:
          command: deb
          args: -p server

      - name: Upload DEBs
        uses: actions/upload-artifact@v2
        with:
          name: deb-ubuntu-latest
          path: target/debian/*.deb
          
  release:
    runs-on: ubuntu-latest
    needs: [check-upstream, build-deb]
    if: ${{ needs.check-upstream.outputs.new_release_exists == 'true' }}

    steps:
      - name: Install Distro Dependencies
        run: sudo env DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends --yes git gpg reprepro

      - name: Set Up GPG Keys
        run: |
          mkdir -p -m 0700 "$HOME/.gnupg"
          echo 'pinentry-mode loopback' >>"$HOME/.gnupg/gpg.conf"
          echo 'allow-loopback-pinentry' >>"$HOME/.gnupg/gpg-agent.conf"
          echo 'allow-preset-passphrase' >>"$HOME/.gnupg/gpg-agent.conf"
          gpgconf --reload gpg-agent
          echo "${{ secrets.GPG_SIGNING_KEY }}" | gpg --quiet --batch --yes --import
          echo '${{ secrets.GPG_SIGNING_PASSPHRASE }}' | /usr/lib/gnupg/gpg-preset-passphrase --preset 57F0E65446A301CC19914FD61167922350A2D8B2

      - name: Checkout
        uses: actions/checkout@v2
        with:
          # See https://github.com/marketplace/actions/github-push
          persist-credentials: false
          fetch-depth: 0

      - name: Get Artifacts
        uses: actions/download-artifact@v2
        with:
          name: deb-ubuntu-latest
          path: ./artifacts
      
      - name: Import Artifacts
        run: |
          cd artifacts
          for name in *.deb; do
            reprepro --export=silent-never -b ../debian includedeb unstable "$name"
          done
          
      - name: Update Repository
        run: |
          has_changes() {
            git status --porcelain "$@" | grep -q .
          }

          if has_changes debian/pool; then
              reprepro -b debian export unstable
          fi

          if has_changes debian/{db,dists,pool}; then
              git add debian/{db,dists,pool}
              git \
                  -c 'user.email=41898282+github-actions[bot]@users.noreply.github.com' \
                  -c 'user.name=github-actions[bot]' \
                  commit -m "Included release tonarino/innernet@${{ needs.check-upstream.outputs.innernet_release }}."
          else
              echo 'No updates to commit.'
          fi

      - name: Push changes
        uses: ad-m/github-push-action@v0.6.0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ github.ref }}