name: E2E DDIL

# Phase 1 trigger: workflow_dispatch only. Nightly cron + on-main-merge
# land in mulga-siv-5.8 once ≥4 scenarios are asserting. See
# docs/development/improvements/ddil-e2e-test-harness.md §4 / §Dependencies.
on:
  workflow_dispatch:
    inputs:
      quarantined:
        description: "Comma-separated scenario letters to quarantine (A..F)"
        required: false
        default: ""

env:
  GIT_BRANCH: ${{ github.ref_name }}

jobs:
  ddil:
    name: DDIL Real Multi-Node
    runs-on: [ self-hosted, ci-multi ]
    # Budget: ~45m go test + tofu provision/bootstrap/teardown on ci-multi.
    # In Phase 1 the scenarios all t.Skip, so the real-world runtime is
    # dominated by provisioning; the 60m ceiling leaves headroom for
    # Phase 2/3 when assertions come online.
    timeout-minutes: 60
    env:
      TOFU_LOG: /tmp/e2e-tofu-ddil-${{ github.run_id }}.log
    steps:
      - name: Clean Workspace
        run: rm -rf "$GITHUB_WORKSPACE"/*

      - uses: actions/create-github-app-token@v3
        id: app-token
        with:
          client-id: ${{ secrets.APP_ID }}
          private-key: ${{ secrets.APP_PRIVATE_KEY }}
          repositories: mulga

      # Full spinifex checkout: the Go harness must run on the runner
      # (outside the cluster) so its SSH path survives scenario partitions
      # that drop peer-to-peer cluster traffic. Running inside the cluster
      # would self-sever when Scenario C isolates a node.
      - uses: actions/checkout@v6
        name: Checkout Spinifex
        with:
          path: spinifex

      - uses: actions/checkout@v6
        name: Checkout Mulga (tofu-cluster)
        with:
          repository: mulgadc/mulga
          token: ${{ steps.app-token.outputs.token }}
          sparse-checkout: scripts/tofu-cluster
          path: mulga

      - name: Build Install Artifacts
        working-directory: mulga/scripts/tofu-cluster
        run: |
          ./build-install-artifacts.sh "${GIT_BRANCH}" \
            "${RUNNER_TEMP}/spinifex-distro.tar.gz" \
            "${RUNNER_TEMP}/setup.sh" \
            "${RUNNER_TEMP}/spinifex-tests.tar"

      - name: Provision VMs
        working-directory: mulga/scripts/tofu-cluster
        run: |
          export TF_VAR_git_branch="${GIT_BRANCH}"
          tofu init -input=false >> "$TOFU_LOG" 2>&1
          tofu workspace select -or-create "${SPINIFEX_CI_ENV}" >> "$TOFU_LOG" 2>&1
          tofu destroy -var-file=envs/${SPINIFEX_CI_ENV}.tfvars -auto-approve -input=false >> "$TOFU_LOG" 2>&1 || true
          ./scrub-env.sh "${SPINIFEX_CI_ENV}" >> "$TOFU_LOG" 2>&1 || true
          tofu apply -var-file=envs/${SPINIFEX_CI_ENV}.tfvars -auto-approve -input=false >> "$TOFU_LOG" 2>&1

      - name: Bootstrap via Binary Install
        working-directory: mulga/scripts/tofu-cluster
        run: |
          SPX_EXTERNAL_POOL="${SPINIFEX_CI_POOL}" \
          ./bootstrap-install.sh "${SPINIFEX_CI_ENV}" \
            "${RUNNER_TEMP}/setup.sh" \
            "${RUNNER_TEMP}/spinifex-distro.tar.gz" \
            --test-tar "${RUNNER_TEMP}/spinifex-tests.tar"

      - name: Run DDIL Scenarios
        working-directory: mulga/scripts/tofu-cluster
        run: |
          set -o pipefail
          INVENTORY=$(tofu output -json inventory)
          SSH_KEY=$(echo "$INVENTORY" | jq -r '.ssh_key_path')
          SSH_KEY="${SSH_KEY/#\~/$HOME}"
          SSH_USER=$(echo "$INVENTORY" | jq -r '.ssh_user')
          REGION=$(echo "$INVENTORY" | jq -r '.region')
          # DDIL_NODES must be the cluster-traffic IPs: PartitionNode
          # installs iptables DROP rules for each peer, so the runner's
          # SSH source IP must differ from these. On single-NIC
          # tofu-cluster, wan_ip == cluster IP and the runner's outbound
          # IP is distinct — see e2e-ddil-test-harness.md §3 Scenario C.
          NODE_IPS=$(echo "$INVENTORY" | jq -r '[.nodes[].wan_ip] | join(",")')
          echo "DDIL_NODES=${NODE_IPS}"

          mkdir -p "${RUNNER_TEMP}/ddil-results"
          cd "${GITHUB_WORKSPACE}/spinifex"
          DDIL_NODES="${NODE_IPS}" \
          DDIL_SSH_USER="${SSH_USER}" \
          DDIL_SSH_KEY="${SSH_KEY}" \
          DDIL_QUARANTINED="${{ inputs.quarantined }}" \
          AWS_REGION="${REGION}" \
            go test -tags=e2e -timeout 45m -json \
              ./tests/e2e/ddil/scenarios/... \
              | tee "${RUNNER_TEMP}/ddil-results/results.json"

      - name: Upload DDIL Results
        if: always()
        uses: actions/upload-artifact@v7
        with:
          name: ddil-results-${{ github.run_id }}
          path: ${{ runner.temp }}/ddil-results
          retention-days: 30

      - name: Teardown
        if: always()
        working-directory: mulga/scripts/tofu-cluster
        run: |
          tofu workspace select -or-create "${SPINIFEX_CI_ENV}" >> "$TOFU_LOG" 2>&1
          tofu destroy -var-file=envs/${SPINIFEX_CI_ENV}.tfvars -auto-approve -input=false >> "$TOFU_LOG" 2>&1
          ./scrub-env.sh "${SPINIFEX_CI_ENV}" >> "$TOFU_LOG" 2>&1 || true