name: WAF integration

# Phase 2-3: Build Once, Test Many - Use registry image instead of building
# This workflow now waits for docker-build.yml to complete and pulls the built image
on:
  workflow_dispatch:
    inputs:
      image_tag:
        description: 'Docker image tag to test (e.g., pr-123-abc1234, latest)'
        required: false
        type: string

# Prevent race conditions when PR is updated mid-test
# Cancels old test runs when new build completes with different SHA
concurrency:
  group: ${{ github.workflow }}-${{ github.event.workflow_run.event || github.event_name }}-${{ github.event.workflow_run.head_branch || github.ref }}
  cancel-in-progress: true

jobs:
  waf-integration:
    name: Coraza WAF Integration
    runs-on: ubuntu-latest
    timeout-minutes: 15
    # Only run if docker-build.yml succeeded, or if manually triggered
    if: ${{ github.event_name == 'workflow_dispatch' || (github.event_name == 'workflow_run' && github.event.workflow_run.conclusion == 'success') }}

    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      # Determine the correct image tag based on trigger context
      # For PRs: pr-{number}-{short-sha}, For non-PR: sha-{short-sha}
      - name: Determine image tag
        id: determine-tag
        env:
          EVENT: ${{ github.event.workflow_run.event || github.event_name }}
          REF: ${{ github.event.workflow_run.head_branch || github.ref_name }}
          SHA: ${{ github.event.workflow_run.head_sha || github.sha }}
          MANUAL_TAG: ${{ inputs.image_tag }}
        run: |
          # Manual trigger uses provided tag
          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            if [[ -n "$MANUAL_TAG" ]]; then
              TAG_VALUE="$MANUAL_TAG"
            else
              # Default to latest if no tag provided
              TAG_VALUE="latest"
            fi
            {
              echo "tag=${TAG_VALUE}"
              echo "source_type=manual"
            } >> "$GITHUB_OUTPUT"
            exit 0
          fi

          # Extract 7-character short SHA
          SHORT_SHA=$(echo "$SHA" | cut -c1-7)

          if [[ "$EVENT" == "pull_request" ]]; then
            # Use native pull_requests array (no API calls needed)
            PR_NUM=$(echo '${{ toJson(github.event.workflow_run.pull_requests) }}' | jq -r '.[0].number')

            # Fallback for direct PR trigger
            if [[ -z "$PR_NUM" || "$PR_NUM" == "null" ]]; then
               PR_NUM="${{ github.event.number }}"
            fi

            if [[ -z "$PR_NUM" || "$PR_NUM" == "null" ]]; then
              echo "❌ ERROR: Could not determine PR number"
              echo "Event: $EVENT"
              echo "Ref: $REF"
              echo "SHA: $SHA"
              echo "Pull Requests JSON: ${{ toJson(github.event.workflow_run.pull_requests) }}"
              exit 1
            fi

            # Immutable tag with SHA suffix prevents race conditions
            {
              echo "tag=pr-${PR_NUM}-${SHORT_SHA}"
              echo "source_type=pr"
            } >> "$GITHUB_OUTPUT"
          else
            # Non-PR workflow_run uses short SHA tag (matches docker-build.yml)
            {
              echo "tag=sha-${SHORT_SHA}"
              echo "source_type=sha"
            } >> "$GITHUB_OUTPUT"
          fi

          echo "sha=${SHORT_SHA}" >> "$GITHUB_OUTPUT"
          echo "Determined image tag: $(grep tag= "$GITHUB_OUTPUT")"

      # Pull image from Docker Hub with retry logic
      - name: Pull Docker image from registry
        id: pull_image
        uses: nick-fields/retry@ce71cc2ab81d554ebbe88c79ab5975992d79ba08 # v3
        with:
          timeout_minutes: 5
          max_attempts: 3
          retry_wait_seconds: 10
          command: |
            IMAGE_NAME="docker.io/wikid82/charon:${{ steps.determine-tag.outputs.tag }}"
            echo "Pulling image: $IMAGE_NAME"
            docker pull "$IMAGE_NAME"
            docker tag "$IMAGE_NAME" charon:local
            echo "✅ Successfully pulled from registry"

      # Validate image freshness by checking SHA label
      - name: Validate image SHA
        env:
          SHA: ${{ steps.determine-tag.outputs.sha }}
        run: |
          LABEL_SHA=$(docker inspect charon:local --format '{{index .Config.Labels "org.opencontainers.image.revision"}}' | cut -c1-7)
          echo "Expected SHA: $SHA"
          echo "Image SHA:    $LABEL_SHA"

          if [[ "$LABEL_SHA" != "$SHA" ]]; then
            echo "⚠️ WARNING: Image SHA mismatch!"
            echo "Image may be stale. Proceeding with caution..."
          else
            echo "✅ Image SHA matches expected commit"
          fi

      - name: Run WAF integration tests
        id: waf-test
        run: |
          chmod +x scripts/coraza_integration.sh
          scripts/coraza_integration.sh 2>&1 | tee waf-test-output.txt
          exit "${PIPESTATUS[0]}"

      - name: Dump Debug Info on Failure
        if: failure()
        run: |
          {
            echo "## 🔍 Debug Information"
            echo ""

            echo "### Container Status"
            echo '```'
            docker ps -a --filter "name=charon" --filter "name=coraza" 2>&1 || true
            echo '```'
            echo ""

            echo "### Caddy Admin Config"
            echo '```json'
            curl -s http://localhost:2019/config 2>/dev/null | head -200 || echo "Could not retrieve Caddy config"
            echo '```'
            echo ""

            echo "### Charon Container Logs (last 100 lines)"
            echo '```'
            docker logs charon-debug 2>&1 | tail -100 || echo "No container logs available"
            echo '```'
            echo ""

            echo "### WAF Ruleset Files"
            echo '```'
            docker exec charon-debug sh -c 'ls -la /app/data/caddy/coraza/rulesets/ 2>/dev/null && echo "---" && cat /app/data/caddy/coraza/rulesets/*.conf 2>/dev/null' || echo "No ruleset files found"
            echo '```'
          } >> "$GITHUB_STEP_SUMMARY"

      - name: WAF Integration Summary
        if: always()
        run: |
          {
            echo "## 🛡️ WAF Integration Test Results"
            if [ "${{ steps.waf-test.outcome }}" == "success" ]; then
              echo "✅ **All WAF tests passed**"
              echo ""
              echo "### Test Results:"
              echo '```'
              grep -E "^✓|^===|^Coraza" waf-test-output.txt || echo "See logs for details"
              echo '```'
            else
              echo "❌ **WAF tests failed**"
              echo ""
              echo "### Failure Details:"
              echo '```'
              grep -E "^✗|Unexpected|Error|failed" waf-test-output.txt | head -20 || echo "See logs for details"
              echo '```'
            fi
          } >> "$GITHUB_STEP_SUMMARY"

      - name: Cleanup
        if: always()
        run: |
          docker rm -f charon-debug || true
          docker rm -f coraza-backend || true
          docker network rm containers_default || true