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 }}
      innernet_version: ${{ steps.check-latest-release.outputs.innernet_version }}
      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: Set Ubuntu Release Name
        id: set-ubuntu-release-name
        run: |
          echo "ubuntu_release=$(lsb_release --short --codename)" >>"$GITHUB_OUTPUT"

      - 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 "innernet_version=${release#v}" >>"$GITHUB_OUTPUT"
                echo "tarball_url=$tarball_url" >>"$GITHUB_OUTPUT"
                echo "Latest release: $release"
              )

      - name: Checkout
        uses: actions/checkout@v3
        with:
          # See https://github.com/marketplace/actions/github-push
          persist-credentials: false
          fetch-depth: 0

      - name: Check Repo Release
        id: check-repo-release
        run: |
          declare -a new_release_exists
          for arch in amd64 armhf arm64; do
            for ver_codename in ubuntu-22.04/jammy ubuntu-20.04/focal; do
              ver=${ver_codename%/*}
              codename=${ver_codename##*/}
              # Note the leading v to match the Git tag.
              indexed=v$(reprepro -A "$arch" -b debian --list-format '${version}\n' listmatched "$codename" innernet)
              upstream="${{ steps.check-latest-release.outputs.innernet_release }}-0ubuntu0~$codename"
              echo "Repo release in $codename/$arch: $indexed"
              if [ "x$indexed" != "x$upstream" ]; then
                new_release_exists+=( "\"$ver\"" )
              fi
            done
          done
          (IFS=$'\n' ; echo "new_release_exists=[$(echo -n "${new_release_exists[*]}" | sort -u | tr '\n' , | sed -e 's;,$;;')]" >>"$GITHUB_OUTPUT")

      - name: Show Output
        id: show-output
        run: |
          echo "## Job Outputs" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`innernet_release=${{ steps.check-latest-release.outputs.innernet_release }}\`" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`innernet_version=${{ steps.check-latest-release.outputs.innernet_version }}\`" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`tarball_url=${{ steps.check-latest-release.outputs.tarball_url }}\`" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`new_release_exists=${{ steps.check-repo-release.outputs.new_release_exists }}\`" >>"$GITHUB_STEP_SUMMARY"

  build-deb:
    name: Build DEB Packages ${{ matrix.os }}/${{ matrix.arch }}
    needs: [check-upstream]
    if: "fromJson(needs.check-upstream.outputs.new_release_exists)[0] != null"
    runs-on: ubuntu-latest
    container:
      image: ${{ matrix.image }}

    strategy:
      matrix:
        arch: [amd64]
        os: ${{ fromJson(needs.check-upstream.outputs.new_release_exists) }}
        include:
          - os: ubuntu-22.04
            codename: jammy
            image: ubuntu:22.04
          - os: ubuntu-20.04
            codename: focal
            image: ubuntu:20.04

    steps:
      - name: Install Distro Dependencies
        run: |
          apt-get update
          DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends --yes build-essential ca-certificates dpkg-dev liblzma-dev wget

      - 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-*
          sed -i -e '/^readme =/ d' server/Cargo.toml

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

      - name: Install cargo-deb
        run: |
          type -p cargo-deb >/dev/null || cargo install cargo-deb

      - name: Set Up Rust Cache
        uses: Swatinem/rust-cache@v2
        with:
          key: ${{ matrix.os }}-amd64

      - name: Build Client DEB
        uses: actions-rs/cargo@v1
        with:
          command: deb
          args: -p client --deb-version=${{ needs.check-upstream.outputs.innernet_version }}-0ubuntu0~${{ matrix.codename }}

      - name: Build Server DEB
        uses: actions-rs/cargo@v1
        with:
          command: deb
          args: -p server --deb-version=${{ needs.check-upstream.outputs.innernet_version }}-0ubuntu0~${{ matrix.codename }}

      - name: Upload DEBs
        uses: actions/upload-artifact@v3
        with:
          # Syntax: https://github.com/actions/upload-artifact/issues/22
          name: deb ${{ matrix.codename }} ${{ matrix.arch }}
          path: target/debian/*.deb

  build-cross-deb:
    name: Build DEB Packages ${{ matrix.os }}/${{ matrix.arch }} (Cross-Compiled)
    needs: [check-upstream]
    if: "fromJson(needs.check-upstream.outputs.new_release_exists)[0] != null"
    runs-on: ${{ matrix.os }}

    strategy:
      matrix:
        os: ${{ fromJson(needs.check-upstream.outputs.new_release_exists) }}
        arch:
          - armhf
          - arm64
        include:
          - arch: armhf
            target: armv7-unknown-linux-gnueabihf
            target_prefix: arm-linux-gnueabihf-
          - arch: arm64
            target: aarch64-unknown-linux-gnu
            target_prefix: aarch64-linux-gnu-

    steps:
      - name: Infer Configuration
        id: config
        run: |
          case "${{ matrix.os }}" in
          ubuntu-22.04)
            echo "codename=jammy" >>"$GITHUB_OUTPUT"
            ;;
          ubuntu-20.04)
            echo "codename=focal" >>"$GITHUB_OUTPUT"
            ;;
          *)
            if [ "ubuntu-$(lsb_release -sr)" = "${{ matrix.os }}" ]; then
              echo "codename=$(lsb_release -sc)" >>"$GITHUB_OUTPUT"
            else
              echo "unknown matrix.os: ${{ matrix.os }}" >&2
              exit 1
            fi
            ;;
          esac

      - name: Install Distro Dependencies
        run: |
          sudo sed -i -e 's;^\(deb\(-src\)\?\)\(\s\+\)\(\(https\?://azure\.archive\.ubuntu\.com\|https\?://archive\.ubuntu\.com\|https\?://security\.ubuntu\.com\)/\|mirror+file:/etc/apt/apt-mirrors\.txt\);\1\3[arch=amd64,i386]\3\4;' /etc/apt/sources.list /etc/apt/sources.list.d/*.list
          sudo dpkg --add-architecture "${{ matrix.arch }}"
          # apt-get install goes into an infinite loop (use -o Debug::pkgAcquire=true to see it) if we use apt-mirrors.txt, like GitHub does for the host architecture.
          # So we just limit the mirrors file and use our trusty sources.list overrides.
          echo "deb [arch=armhf,arm64,riscv64] http://ports.ubuntu.com/ ${{ steps.config.outputs.codename }} main universe" | sudo tee /etc/apt/sources.list.d/ports.list >/dev/null
          echo "deb [arch=armhf,arm64,riscv64] http://ports.ubuntu.com/ ${{ steps.config.outputs.codename }}-security main universe" | sudo tee -a /etc/apt/sources.list.d/ports.list >/dev/null
          echo "deb [arch=armhf,arm64,riscv64] http://ports.ubuntu.com/ ${{ steps.config.outputs.codename }}-updates main universe" | sudo tee -a /etc/apt/sources.list.d/ports.list >/dev/null
          sudo apt-get update
          sudo env DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends --yes dpkg-dev liblzma-dev pkg-config build-essential "crossbuild-essential-${{ matrix.arch }}" libsqlite3-dev:"${{ matrix.arch }}"

      - name: Set Up Environment
        id: setup-env
        run: |
          echo "CC_${{ matrix.target }}=${{ matrix.target_prefix }}gcc" >>"$GITHUB_ENV"
          echo "HOST_CC=gcc" >>"$GITHUB_ENV"
          mkdir -p .cargo
          echo "[target.${{ matrix.target }}]" >>.cargo/config
          echo "linker = \"${{ matrix.target_prefix }}gcc\"" >>.cargo/config
          echo "strip = { path = \"${{ matrix.target_prefix }}strip\" }" >>.cargo/config
          echo "objcopy = { path = \"${{ matrix.target_prefix }}objcopy\" }" >>.cargo/config

      - 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-*
          sed -i -e '/^readme =/ d' server/Cargo.toml

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal
          override: true
          target: ${{ matrix.target }}

      - name: Set Up Rust Cache
        uses: Swatinem/rust-cache@v2
        with:
          key: ${{ matrix.os }}-${{ matrix.arch }}

      - name: Install cargo-deb
        run: |
          type -p cargo-deb >/dev/null || cargo install cargo-deb

      - name: Build Client DEB
        uses: actions-rs/cargo@v1
        with:
          command: deb
          args: -p client --target=${{ matrix.target }} --deb-version=${{ needs.check-upstream.outputs.innernet_version }}-0ubuntu0~${{ steps.config.outputs.codename }}

      - name: Build Server DEB
        uses: actions-rs/cargo@v1
        with:
          command: deb
          args: -p server --target=${{ matrix.target }} --deb-version=${{ needs.check-upstream.outputs.innernet_version }}-0ubuntu0~${{ steps.config.outputs.codename }}

      - name: Upload DEBs
        uses: actions/upload-artifact@v3
        with:
          # Syntax: https://github.com/actions/upload-artifact/issues/22
          name: deb ${{ steps.config.outputs.codename }} ${{ matrix.arch }}
          path: target/${{ matrix.target }}/debian/*.deb

  test-cross:
    name: Test DEB Packages ${{ matrix.image }}/${{ matrix.os }} (QEMU)
    needs: [check-upstream, build-cross-deb]
    if: "fromJson(needs.check-upstream.outputs.new_release_exists)[0] != null"
    runs-on: ubuntu-latest

    strategy:
      matrix:
        image:
          - raspios_lite:latest
          - raspios_lite_arm64:latest
        include:
          - image: raspios_lite:latest
            os: ubuntu-22.04
            codename: jammy
            qemu_cpu: cortex-a7
            qemu_cpu_info: cpuinfo/raspberrypi_3b
            arch: armhf
          - image: raspios_lite_arm64:latest
            os: ubuntu-22.04
            codename: jammy
            qemu_cpu: cortex-a53
            qemu_cpu_info: cpuinfo/raspberrypi_4b
            arch: arm64

    steps:
      - name: Download DEBs
        if: "contains(needs.check-upstream.outputs.new_release_exists, matrix.os)"
        uses: actions/download-artifact@v3
        with:
          name: deb ${{ matrix.codename }} ${{ matrix.arch }}
          path: ./artifacts

      - name: Test DEBs
        id: test
        if: "contains(needs.check-upstream.outputs.new_release_exists, matrix.os)"
        uses: pguyot/arm-runner-action@v2
        with:
          base_image: ${{ matrix.image }}
          cpu: ${{ matrix.qemu_cpu }}
          cpu_info: ${{ matrix.qemu_cpu_info }}
          copy_artifact_path: github_test_summary
          debug: false
          commands: |
            echo "* \`arch=$(dpkg-architecture -q DEB_HOST_ARCH)\`" >>"github_test_summary"
            echo "* \`codename=$(lsb_release --short --codename)\`" >>"github_test_summary"

            dpkg -i artifacts/innernet_*.deb
            dpkg -i artifacts/innernet-server_*.deb

            DEBIAN_FRONTEND=noninteractive apt-get update
            DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends --yes --fix-broken install

            innernet --version
            innernet-server --version

      - name: Show Output
        id: show-output
        if: "contains(needs.check-upstream.outputs.new_release_exists, matrix.os)"
        run: |
          echo "## Job Outputs" >>"$GITHUB_STEP_SUMMARY"
          cat github_test_summary >>"$GITHUB_STEP_SUMMARY"

  update-repo:
    name: Update Repository
    needs: [check-upstream, build-deb, test-cross]
    if: "fromJson(needs.check-upstream.outputs.new_release_exists)[0] != null"
    runs-on: ubuntu-latest

    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@v3
        with:
          # See https://github.com/marketplace/actions/github-push
          persist-credentials: false
          fetch-depth: 0

      - name: Download DEBs
        uses: actions/download-artifact@v3
        with:
          path: ./artifacts

      - name: Include DEBs
        id: include-debs
        run: |
          declare -a codenames archs
          for path in artifacts/deb\ */*.deb; do
            codename=${path#artifacts/deb }
            arch=${codename##* }
            arch=${arch%%/*}
            codename=${codename% *}
            name="$(dpkg-deb --field "$path" package)"
            if [ ! -e "debian/pool/contrib/i/$name/$(basename "$path")" ]; then
              reprepro -A "$arch" --export=silent-never -b debian includedeb "$codename" "$path"
              codenames+=( "$codename" )
              archs+=( "$arch" )
            else
              echo 'Package $name already exists. Silently ignored.'
            fi
          done
          (IFS=$'\n' ; echo "codenames=$(echo "${codenames[*]}" | sort -u | xargs -r)" >>"$GITHUB_OUTPUT")
          (IFS=$'\n' ; echo "archs=$(echo "${archs[*]}" | sort -u | xargs -r)" >>"$GITHUB_OUTPUT")

      - name: Update Repository
        run: |
          has_changes() {
            git status --porcelain "$@" | grep -q .
          }

          if has_changes debian/pool; then
              reprepro -b debian export
          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 }} in ${{ steps.include-debs.outputs.codenames }} for ${{ steps.include-debs.outputs.archs }}."
          else
              echo 'No updates to commit.'
          fi

      - name: Push changes
        uses: ad-m/github-push-action@master
        if: github.ref_name == 'main'
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ github.ref }}

      - name: Show Output
        id: show-output
        run: |
          echo "## Job Outputs" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`codenames=${{ steps.include-debs.outputs.codenames }}\`" >>"$GITHUB_STEP_SUMMARY"
          echo "* \`archs=${{ steps.include-debs.outputs.archs }}\`" >>"$GITHUB_STEP_SUMMARY"