name: E2E Testing

on:
  workflow_dispatch:
  push:
    paths-ignore:
      - ".github/workflows/images-*"
      - ".github/workflows/ubuntu.yml"
      - ".github/workflows/macos.yml"
      - ".github/workflows/debian-cache.yml"

jobs:
  test-end-to-end:
    name: E2E Testing
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        os: [
          { distro: Ubuntu, release: 12.04 },
          { distro: Ubuntu, release: 14.04 },
          { distro: Ubuntu, release: 16.04 },
          { distro: Ubuntu, release: 18.04 },
          { distro: Ubuntu, release: 20.04 },
          { distro: Ubuntu, release: 22.04 },
          { distro: CentOS, release: 6 },
          { distro: CentOS, release: 7 },
          { distro: CentOS, release: 8 },
          { distro: OracleLinux, release: 6 },
          { distro: OracleLinux, release: 7 },
          { distro: OracleLinux, release: 8 },
          { distro: OracleLinux, release: 9 },
          { distro: Debian, release: 7 },
          { distro: Debian, release: 8 },
          { distro: Debian, release: 9 },
          { distro: Debian, release: 10 },
          { distro: Debian, release: 11 }
          ]

    steps:
    - uses: actions/checkout@v1

    - name: Build
      run: go build

    - uses: digitalocean/action-doctl@v2
      with:
        token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}

    - uses: webfactory/ssh-agent@v0.8.0
      with:
        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}

    - name: Create droplet
      run: >-
        doctl compute droplet create
        --size s-1vcpu-1gb
        --tag-name=github-actions
        --image ubuntu-22-04-x64
        --ssh-keys='b4:4c:66:7d:be:19:25:43:1c:e0:02:61:9f:49:12:94'
        --wait
        --region fra1
        ga-out-of-tree-e2e-${{ matrix.os.distro }}-${{ matrix.os.release }}-$GITHUB_SHA

    - name: End-to-End Testing [${{ matrix.os.distro }} ${{ matrix.os.release }}]
      run: |
        sleep 1m

        IP=$(doctl compute droplet list \
          --tag-name=github-actions \
          --format "Name,Public IPv4" \
          | grep -v ID \
          | grep ga-out-of-tree-e2e-${{ matrix.os.distro }}-${{ matrix.os.release }}-$GITHUB_SHA \
          | awk '{print $2}')

        while ! ssh -o StrictHostKeyChecking=accept-new root@$IP echo
        do
          sleep 1s
        done

        ssh root@$IP "cloud-init status --wait"

        ssh root@$IP "apt-get update"
        ssh root@$IP "apt-get install -y podman qemu-system-x86"

        ssh root@$IP "useradd --groups kvm --shell /bin/bash user && mkdir -p /home/user/.ssh && cp /root/.ssh/authorized_keys /home/user/.ssh/ && chown -R user:user /home/user"

        ssh root@$IP "loginctl enable-linger user"

        scp ./out-of-tree root@$IP:/usr/local/bin/

        echo 'name = "out-of-tree script"' >> .out-of-tree.toml
        echo 'type = "script"' >> .out-of-tree.toml
        echo 'script = "script.sh"' >> .out-of-tree.toml
        echo '[[supported_kernels]]' >> .out-of-tree.toml
        echo 'distro_type = "${{ matrix.os.distro }}"' >> .out-of-tree.toml
        echo 'distro_release = "${{ matrix.os.release }}"' >> .out-of-tree.toml
        echo 'release_mask = ".*"' >> .out-of-tree.toml
        echo -e '#!/bin/sh\necho ok' >> script.sh

        scp .out-of-tree.toml script.sh user@$IP:

        echo '[Unit]' >> test.service
        echo 'Description=e2e' >> test.service
        echo '[Service]' >> test.service
        echo 'User=user' >> test.service
        echo 'RemainAfterExit=yes' >> test.service
        echo 'StandardError=append:/var/log/test.log' >> test.service
        echo 'StandardOutput=append:/var/log/test.log' >> test.service
        echo 'Type=oneshot' >> test.service
        echo 'WorkingDirectory=/home/user' >> test.service
        echo 'TimeoutStopSec=1' >> test.service
        echo 'Environment=XDG_RUNTIME_DIR=/home/user' >> test.service
        echo 'ExecStart=/usr/local/bin/out-of-tree kernel autogen --max=1' >> test.service
        echo 'ExecStart=/usr/local/bin/out-of-tree pew' >> test.service

        scp test.service root@$IP:/etc/systemd/system/test.service

        ssh root@$IP systemctl daemon-reload

        ssh root@$IP systemctl start test --no-block

        while ! ssh root@$IP systemctl show test -p SubState --value | grep -E '(failed|exited)'
        do
          sleep 30s
        done

        ssh root@$IP "cat /var/log/test.log"

        scp -r user@$IP:/home/user/.out-of-tree/logs .

        ssh root@$IP systemctl is-active test

    - name: Archive logs
      if: always()
      uses: actions/upload-artifact@v3
      with:
        name: test-end-to-end-${{ matrix.os.distro }}-${{ matrix.os.release }}-logs
        path: logs

    - name: Delete droplet
      if: always()
      run: doctl compute droplet delete -f ga-out-of-tree-e2e-${{ matrix.os.distro }}-${{ matrix.os.release }}-$GITHUB_SHA