name: Load Test

on:
  push:
    branches: [main]
  workflow_dispatch:
    inputs:
      target_rps:
        description: 'Target requests per second'
        required: false
        default: '500'
      duration:
        description: 'Test duration'
        required: false
        default: '300s'
      service:
        description: 'Service to test (all, api, darkwatch, spamshield, voiceprint)'
        required: false
        default: 'all'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  NODE_VERSION: "20"

jobs:
  load-test:
    name: Load Test (${{ github.event.inputs.service || 'all' }})
    runs-on: ubuntu-latest
    timeout-minutes: 30
    environment: staging
    steps:
      - uses: actions/checkout@v4

      - name: Install k6
        run: |
          curl -s https://github.com/grafana/k6/releases/download/v0.50.0/k6-linux-amd64.tar.gz -L | tar xz
          sudo mv k6 /usr/local/bin/
          k6 version

      - name: Run load tests
        run: |
          chmod +x scripts/load-test/run-all.sh
          ./scripts/load-test/run-all.sh ${{ github.event.inputs.service || 'all' }}
        env:
          LOAD_TEST_BASE_URL: ${{ secrets.LOAD_TEST_BASE_URL || 'http://localhost:3000' }}
          API_TOKEN: ${{ secrets.LOAD_TEST_API_TOKEN || 'test-token' }}
          TARGET_RPS: ${{ github.event.inputs.target_rps || '500' }}
          DURATION: ${{ github.event.inputs.duration || '300s' }}
          K6_CLOUD_TOKEN: ${{ secrets.K6_CLOUD_TOKEN || '' }}
          K6_CLOUD_PROJECT_ID: ${{ vars.K6_CLOUD_PROJECT_ID || '' }}

      - name: Upload load test report
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: load-test-report-${{ github.sha }}
          path: scripts/load-test/reports/
          retention-days: 30

      - name: Check P99 thresholds
        if: always()
        run: |
          if [ -f scripts/load-test/reports/threshold-results.json ]; then
            FAILURES=$(jq -r '[.services | to_entries[] | select(.value.exitCode != 0) | .key] | join(", ")' scripts/load-test/reports/threshold-results.json 2>/dev/null || echo "")
            if [ -n "$FAILURES" ] && [ "$FAILURES" != "" ]; then
              echo "❌ Load test failures: $FAILURES"
              exit 1
            else
              echo "✅ All load tests passed"
            fi
          else
            echo "⚠️ No threshold results file found"
            exit 1
          fi

      - name: Validate auto-scaling
        if: always()
        run: |
          SUMMARY_FILE=$(ls scripts/load-test/reports/*-summary-*.json 2>/dev/null | head -1)
          if [ -n "$SUMMARY_FILE" ]; then
            MAX_VUS=$(jq -r '.metrics.vus.max // 0' "$SUMMARY_FILE")
            TARGET_VUS=20
            if [ "$(echo "$MAX_VUS >= $TARGET_VUS" | bc -l)" -eq 1 ]; then
              echo "✅ Auto-scaling validated: max VUs ($MAX_VUS) >= target ($TARGET_VUS)"
            else
              echo "⚠️ Auto-scaling below target: max VUs ($MAX_VUS) < target ($TARGET_VUS)"
            fi
          else
            echo "⚠️ No summary file for auto-scaling validation"
          fi