name: CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

env:
  NOMAD_VERSION: '1.8.0'
  CNI_VERSION: '1.5.0'

jobs:
  compile:
    runs-on: ubuntu-latest
    env:
      CGO_ENABLED: 0
      # Enable additional processor optimizations: https://golang.org/wiki/MinimumRequirements#amd64
      GOAMD64: v3
    steps:
      - uses: actions/checkout@v4
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
      - name: Update last trim for Go build cache
        # Go usually trims all builds not used for at least five days. We simulate that the last trim just occurred recently.
        # Otherwise, the cache restored in the previous step would not be used for the build resulting in a longer workflow run.
        # More details: https://github.com/golang/go/blob/d60ad1e068263832c711aaf17b6ccb1b7f71b000/src/cmd/go/internal/cache/cache.go#L255-L326
        run: date +%s > ~/.cache/go-build/trim.txt
        continue-on-error: true
      - name: Build
        run: make build-cover
      - name: Upload Poseidon binary
        uses: actions/upload-artifact@v4
        with:
          name: poseidon
          path: poseidon

  lint:
    name: lint
    runs-on: ubuntu-latest
    permissions:
      # Required: allow read access to the content for analysis.
      contents: read
      # Optional: allow read access to pull request. Use with `only-new-issues` option.
      pull-requests: read
      # Optional: Allow write access to checks to allow the action to annotate code in the PR.
      checks: write
    steps:
      - uses: actions/checkout@v4
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
      - name: golangci-lint
        uses: golangci/golangci-lint-action@v6
        with:
          version: latest
          args: --timeout=3m
          # We rely on the setup-go action to cache the Go pkg and build directories.
          skip-pkg-cache: true
          skip-build-cache: true

  test:
    runs-on: ubuntu-latest
    needs: [ compile ]
    steps:
      - uses: actions/checkout@v4
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
      - name: Update last trim for Go build cache
        # Go usually trims all builds not used for at least five days. We simulate that the last trim just occurred recently.
        # Otherwise, the cache restored in the previous step would not be used for the build resulting in a longer workflow run.
        # More details: https://github.com/golang/go/blob/d60ad1e068263832c711aaf17b6ccb1b7f71b000/src/cmd/go/internal/cache/cache.go#L255-L326
        run: date +%s > ~/.cache/go-build/trim.txt
        continue-on-error: true
      - name: Run tests
        run: make coverhtml
      - name: Upload coverage reports to Codecov
        uses: codecov/codecov-action@v4
        if: ${{ success() || failure() }}
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
      - name: Upload coverage report
        uses: actions/upload-artifact@v4
        if: ${{ success() || failure() }}
        with:
          name: coverage_unit
          path: coverage/coverage_unit.html

  dep-scan:
    runs-on: ubuntu-latest
    permissions:
      actions: read
      contents: read
      security-events: write
    needs: [ compile ]
    if: github.event_name != 'push' || github.actor != 'dependabot[bot]' && github.actor != 'dependabot-preview[bot]' && github.actor != 'dependabot'
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Run Trivy vulnerability scanner in repo mode
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: 'fs'
          format: 'template'
          template: '@/contrib/sarif.tpl'
          output: 'trivy-results.sarif'
          severity: 'HIGH,CRITICAL'
      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v3
        with:
          sarif_file: 'trivy-results.sarif'

  e2e-test:
    runs-on: ubuntu-latest
    needs: [ compile, test ]
    env:
      POSEIDON_AWS_ENDPOINT: ${{ secrets.POSEIDON_AWS_ENDPOINT }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Write secrets to environment file
        run: cat ./.github/workflows/resources/.env | envsubst > ./.env
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
      - name: Update last trim for Go build cache
        # Go usually trims all builds not used for at least five days. We simulate that the last trim just occurred recently.
        # Otherwise, the cache restored in the previous step would not be used for the build resulting in a longer workflow run.
        # More details: https://github.com/golang/go/blob/d60ad1e068263832c711aaf17b6ccb1b7f71b000/src/cmd/go/internal/cache/cache.go#L255-L326
        run: date +%s > ~/.cache/go-build/trim.txt
        continue-on-error: true
      - name: Cache Nomad and CNI binaries
        uses: actions/cache@v4
        with:
          path: |
            ${{ github.workspace }}/nomad
            ${{ github.workspace }}/cni/bin
          key: ${{ runner.os }}-nomad-${{ env.NOMAD_VERSION }}
          restore-keys: |
            ${{ runner.os }}-nomad-${{ env.NOMAD_VERSION }}
      - name: Download Nomad binary
        run: |
          if [[ -f ./nomad ]]; then exit 0; fi
          wget -q "https://releases.hashicorp.com/nomad/${NOMAD_VERSION}/nomad_${NOMAD_VERSION}_linux_amd64.zip"
          wget -q "https://releases.hashicorp.com/nomad/${NOMAD_VERSION}/nomad_${NOMAD_VERSION}_SHA256SUMS"
          grep "nomad_${NOMAD_VERSION}_linux_amd64.zip" nomad_${NOMAD_VERSION}_SHA256SUMS | sha256sum -c -
          unzip nomad_${NOMAD_VERSION}_linux_amd64.zip
      - name: Download CNI binaries
        run: |
          if [[ -f ./cni/bin ]]; then exit 0; fi
          wget -q "https://github.com/containernetworking/plugins/releases/download/v${CNI_VERSION}/cni-plugins-linux-amd64-v${CNI_VERSION}.tgz"
          wget -q "https://github.com/containernetworking/plugins/releases/download/v${CNI_VERSION}/cni-plugins-linux-amd64-v${CNI_VERSION}.tgz.sha256"
          grep "cni-plugins-linux-amd64-v${CNI_VERSION}.tgz" cni-plugins-linux-amd64-v${CNI_VERSION}.tgz.sha256 | sha256sum -c -
          mkdir -p ./cni/bin
          tar zxvf cni-plugins-linux-amd64-v${CNI_VERSION}.tgz -C ./cni/bin
      - name: Set Nomad Config
        run: |
          cp ./docs/resources/secure-bridge.conflist ./cni/secure-bridge.conflist
          echo "server { default_scheduler_config { memory_oversubscription_enabled = true } }, client { cni_path = \"${{ github.workspace }}/cni/bin\", cni_config_dir = \"${{ github.workspace }}/cni\" }" > e2e-config.hcl
      - name: Download Poseidon binary
        uses: actions/download-artifact@v4
        with:
          name: poseidon
      - name: Get current branch name
        id: branch-name
        uses: tj-actions/branch-names@v8
      - name: Checkout matching branch for Dockerfiles (optional)
        id: checkout-dockerfiles
        if: steps.branch-name.outputs.is_default == 'false'
        uses: actions/checkout@v4
        continue-on-error: true
        with:
          repository: openHPI/dockerfiles
          path: deploy/dockerfiles
          ref: ${{ steps.branch-name.outputs.current_branch }}
      - name: Build new e2e test image (optional)
        if: steps.checkout-dockerfiles.outcome == 'success'
        run: make e2e-test-docker-image
      - name: Run e2e tests
        run: |
          export $(cat ./.env | xargs)
          sudo ./nomad agent -dev -log-level=WARN -config e2e-config.hcl &
          until curl -s --fail http://localhost:4646/v1/agent/health ; do sleep 1; done
          chmod +x ./poseidon
          mkdir -p ${GOCOVERDIR}
          ./poseidon | tee poseidon.log &
          until curl -s --fail http://localhost:7200/api/v1/health ; do sleep 1; done
          make e2e-test
        if: ${{ success() || failure() }}
      - name: Setup Poseidon Socket
        run: |
          export $(cat ./.env | xargs)
          killall poseidon
          mkdir -p ~/.config/systemd/user
          cp ./.github/workflows/resources/poseidon-minimal.socket ~/.config/systemd/user/poseidon.socket
          cat ./.github/workflows/resources/poseidon-minimal.service | envsubst > ~/.config/systemd/user/poseidon.service
          echo "POSEIDON_SERVER_SYSTEMDSOCKETACTIVATION=TRUE" >> ./.env
          systemctl --user daemon-reload
          systemctl --user start poseidon.socket
        if: ${{ success() || failure() }}
      - name: Print Poseidon Failure logs
        if: failure()
        run: journalctl --user -xen --no-pager
      - name: Run e2e recovery tests
        run: make e2e-test-recovery
        if: ${{ success() || failure() }}
      - name: Print Systemd Failure logs
        run: |
          /usr/bin/systemctl --user show poseidon.service -p NRestarts
          journalctl --user -xe -u poseidon.service --no-pager
        if: failure()
      - name: Stop Poseidon to flush the coverage file
        run: systemctl --user stop poseidon.service poseidon.socket
        if: ${{ success() || failure() }}
      - name: Convert coverage reports
        run: make convert-run-coverage
        if: ${{ success() || failure() }}
      - name: Upload coverage reports to Codecov
        uses: codecov/codecov-action@v4
        if: ${{ success() || failure() }}
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
      - name: Upload coverage report
        uses: actions/upload-artifact@v4
        if: ${{ success() || failure() }}
        with:
          name: coverage_run
          path: coverage/coverage_run.html