---
on:
  push:
    branches: [master]
  pull_request:
  workflow_dispatch:

name: Docker Test

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

permissions:
  contents: read

jobs:
  docker-test:
    runs-on: ubuntu-latest
    timeout-minutes: 20
    strategy:
      fail-fast: false
      matrix:
        os:
          - name: ubuntu-18.04
            image: ubuntu:18.04
          - name: ubuntu-20.04
            image: ubuntu:20.04
          - name: ubuntu-22.04
            image: ubuntu:22.04
          - name: ubuntu-24.04
            image: ubuntu:24.04
          - name: debian-11
            image: debian:11
          - name: debian-12
            image: debian:12
          - name: centos-stream-9
            image: quay.io/centos/centos:stream9
          - name: centos-stream-10
            image: quay.io/centos/centos:stream10
          - name: fedora-42
            image: fedora:42
          - name: fedora-43
            image: fedora:43
          - name: rocky-8
            image: rockylinux/rockylinux:8
          - name: rocky-9
            image: rockylinux/rockylinux:9
          - name: rocky-10
            image: rockylinux/rockylinux:10
          - name: almalinux-8
            image: almalinux:8
          - name: almalinux-9
            image: almalinux:9
          - name: almalinux-10
            image: almalinux:10
          - name: archlinux
            image: archlinux:latest
          - name: opensuse-leap-16.0
            image: opensuse/leap:16.0
          - name: opensuse-tumbleweed
            image: opensuse/tumbleweed
          - name: oraclelinux-8
            image: oraclelinux:8
          - name: oraclelinux-9
            image: oraclelinux:9
          - name: oraclelinux-10
            image: oraclelinux:10
          - name: amazonlinux-2023
            image: amazonlinux:2023
        # Default TLS settings (tls-crypt-v2)
        tls:
          - name: tls-crypt-v2
            sig: "1"
            key_file: tls-crypt-v2.key
        # Additional TLS types tested on Ubuntu 24.04 only
        include:
          - os:
              name: ubuntu-24.04-tls-crypt
              image: ubuntu:24.04
            tls:
              name: tls-crypt
              sig: "2"
              key_file: tls-crypt.key
          - os:
              name: ubuntu-24.04-tls-auth
              image: ubuntu:24.04
            tls:
              name: tls-auth
              sig: "3"
              key_file: tls-auth.key
          # Test firewalld support on Fedora
          - os:
              name: fedora-42-firewalld
              image: fedora:42
              enable_firewalld: true
            tls:
              name: tls-crypt-v2
              sig: "1"
              key_file: tls-crypt-v2.key

    name: ${{ matrix.os.name }}
    steps:
      - uses: actions/checkout@v6
        with:
          persist-credentials: false

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1

      - name: Build server image
        run: |
          docker build \
            --build-arg BASE_IMAGE=${{ matrix.os.image }} \
            --build-arg ENABLE_FIREWALLD=${{ matrix.os.enable_firewalld && 'y' || 'n' }} \
            -t openvpn-server \
            -f test/Dockerfile.server .

      - name: Build client image
        run: docker build -t openvpn-client -f test/Dockerfile.client .

      - name: Create Docker network
        run: docker network create --subnet=172.28.0.0/24 vpn-test

      - name: Create shared volume
        run: docker volume create shared-config

      - name: Start OpenVPN server
        run: |
          docker run -d \
            --name openvpn-server \
            --hostname openvpn-server \
            --privileged \
            --cgroupns=host \
            --device=/dev/net/tun:/dev/net/tun \
            --sysctl net.ipv4.ip_forward=1 \
            --network vpn-test \
            --ip 172.28.0.10 \
            -v shared-config:/shared \
            -v /sys/fs/cgroup:/sys/fs/cgroup:rw \
            --tmpfs /run \
            --tmpfs /run/lock \
            --stop-signal SIGRTMIN+3 \
            -e TLS_SIG=${{ matrix.tls.sig }} \
            -e TLS_KEY_FILE=${{ matrix.tls.key_file }} \
            openvpn-server

      - name: Wait for server installation and startup
        run: |
          echo "Waiting for OpenVPN server to install and client config to be ready..."
          for i in {1..90}; do
            # Get service status (properly handle non-zero exit codes)
            # systemctl is-active returns exit code 3 for "inactive"/"failed", so capture output without checking exit code
            SERVICE_STATUS="$(docker exec openvpn-server systemctl is-active openvpn-test.service 2>/dev/null)" || true
            [ -z "$SERVICE_STATUS" ] && SERVICE_STATUS="unknown"

            # Fail fast if service failed
            if [ "$SERVICE_STATUS" = "failed" ]; then
              echo "ERROR: openvpn-test.service failed during installation"
              docker exec openvpn-server systemctl status openvpn-test.service 2>&1 || true
              docker exec openvpn-server journalctl -u openvpn-test.service --no-pager -n 100 2>&1 || true
              exit 1
            fi

            # Check if OpenVPN server is running and client config exists
            # The service will be "activating" while waiting for client tests - that's expected
            OPENVPN_RUNNING=false
            CONFIG_EXISTS=false

            if docker exec openvpn-server pgrep -f "openvpn.*server.conf" > /dev/null 2>&1; then
              OPENVPN_RUNNING=true
            fi

            if docker exec openvpn-server test -f /shared/client.ovpn 2>/dev/null; then
              CONFIG_EXISTS=true
            fi

            if [ "$OPENVPN_RUNNING" = true ] && [ "$CONFIG_EXISTS" = true ]; then
              echo "OpenVPN server is running and client config is ready!"
              break
            fi

            echo "Waiting... ($i/90) - Service: $SERVICE_STATUS, OpenVPN running: $OPENVPN_RUNNING, Config exists: $CONFIG_EXISTS"
            sleep 5
          done

          # Final verification with retry (handles race condition during cert renewal restart)
          OPENVPN_STARTED=false
          for retry in {1..5}; do
            if docker exec openvpn-server pgrep -f "openvpn.*server.conf" > /dev/null 2>&1; then
              OPENVPN_STARTED=true
              break
            fi
            echo "Waiting for OpenVPN process... (retry $retry/5)"
            sleep 2
          done

          if [ "$OPENVPN_STARTED" = false ]; then
            echo "ERROR: OpenVPN server failed to start"
            docker exec openvpn-server systemctl status openvpn-server@server 2>&1 || true
            docker exec openvpn-server journalctl -u openvpn-test.service --no-pager -n 100 2>&1 || true
            exit 1
          fi

          if ! docker exec openvpn-server test -f /shared/client.ovpn 2>/dev/null; then
            echo "ERROR: Client config not generated"
            docker exec openvpn-server journalctl -u openvpn-test.service --no-pager -n 100 2>&1 || true
            exit 1
          fi

          echo "Server ready for client connection!"

      - name: Verify client config was generated
        run: |
          docker run --rm -v shared-config:/shared alpine \
            ls -la /shared/
          docker run --rm -v shared-config:/shared alpine \
            cat /shared/client.ovpn

      - name: Start OpenVPN client and run tests
        run: |
          docker run \
            --name openvpn-client \
            --hostname openvpn-client \
            --cap-add=NET_ADMIN \
            --device=/dev/net/tun:/dev/net/tun \
            --network vpn-test \
            --ip 172.28.0.20 \
            -v shared-config:/shared \
            openvpn-client &

          # Wait for tests to complete (look for success message)
          # Extended timeout for revocation e2e tests
          for i in {1..180}; do
            if docker logs openvpn-client 2>&1 | grep -q "ALL TESTS PASSED"
            then
              echo "Tests passed!"
              exit 0
            fi
            if docker logs openvpn-client 2>&1 | grep -q "FAIL:"; then
              echo "Tests failed!"
              docker logs openvpn-client
              exit 1
            fi
            echo "Waiting for tests... ($i/180)"
            sleep 2
          done

          echo "Timeout waiting for tests"
          docker logs openvpn-client
          exit 1

      - name: Show server logs
        if: always()
        run: docker logs openvpn-server 2>&1 || true

      - name: Show systemd journal logs
        if: always()
        run: |
          echo "=== openvpn-test.service status ==="
          docker exec openvpn-server systemctl status openvpn-test.service 2>&1 || true
          echo ""
          echo "=== openvpn-test.service journal ==="
          docker exec openvpn-server journalctl -u openvpn-test.service --no-pager -n 100 2>&1 || true
          echo ""
          echo "=== openvpn-server@server.service journal ==="
          docker exec openvpn-server journalctl -u openvpn-server@server.service --no-pager -n 50 2>&1 || true

      - name: Show install script log
        if: always()
        run: |
          docker cp openvpn-server:/opt/openvpn-install.log /tmp/openvpn-install.log 2>/dev/null && \
            cat /tmp/openvpn-install.log || echo "No install log found"

      - name: Show client logs
        if: always()
        run: docker logs openvpn-client 2>&1 || true

      - name: Cleanup
        if: always()
        run: |
          docker stop openvpn-server openvpn-client 2>/dev/null || true
          docker rm openvpn-server openvpn-client 2>/dev/null || true
          docker network rm vpn-test 2>/dev/null || true
          docker volume rm shared-config 2>/dev/null || true