name: Deploy

on:
  push:
    branches: [master]
    paths-ignore:
      - '**.md'
      - 'LICENSE'
      - '.gitignore'
      - 'docs/**'

concurrency:
  group: deploy
  cancel-in-progress: true

jobs:
  go-build:
    runs-on: self-hosted
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: '1.22'

      - name: Build & test Go server
        run: cd cmd/server && go build . && go test ./...

      - name: Build & test Go ingestor
        run: cd cmd/ingestor && go build . && go test ./...

  test:
    needs: go-build
    runs-on: self-hosted
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 2

      - uses: actions/setup-node@v4
        with:
          node-version: '22'

      - name: Install dependencies
        run: npm ci --production=false

      - name: Detect changes
        id: changes
        run: |
          BACKEND=$(git diff --name-only HEAD~1 | grep -cE '^(server|db|decoder|packet-store|server-helpers|iata-coords)\.js$' || true)
          FRONTEND=$(git diff --name-only HEAD~1 | grep -cE '^public/' || true)
          TESTS=$(git diff --name-only HEAD~1 | grep -cE '^test-|^tools/' || true)
          CI=$(git diff --name-only HEAD~1 | grep -cE '\.github/|package\.json|test-all\.sh|scripts/' || true)
          # If CI/test infra changed, run everything
          if [ "$CI" -gt 0 ]; then BACKEND=1; FRONTEND=1; fi
          # If test files changed, run everything
          if [ "$TESTS" -gt 0 ]; then BACKEND=1; FRONTEND=1; fi
          echo "backend=$([[ $BACKEND -gt 0 ]] && echo true || echo false)" >> $GITHUB_OUTPUT
          echo "frontend=$([[ $FRONTEND -gt 0 ]] && echo true || echo false)" >> $GITHUB_OUTPUT
          echo "Changes: backend=$BACKEND frontend=$FRONTEND tests=$TESTS ci=$CI"

      - name: Backend tests + coverage
        if: steps.changes.outputs.backend == 'true'
        run: |
          npx c8 --reporter=text-summary --reporter=text sh test-all.sh 2>&1 | tee test-output.txt
          
          TOTAL_PASS=$(grep -oP '\d+(?= passed)' test-output.txt | awk '{s+=$1} END {print s}')
          TOTAL_FAIL=$(grep -oP '\d+(?= failed)' test-output.txt | awk '{s+=$1} END {print s}')
          BE_COVERAGE=$(grep 'Statements' test-output.txt | tail -1 | grep -oP '[\d.]+(?=%)')
          
          mkdir -p .badges
          BE_COLOR="red"
          [ "$(echo "$BE_COVERAGE > 60" | bc -l 2>/dev/null)" = "1" ] && BE_COLOR="yellow"
          [ "$(echo "$BE_COVERAGE > 80" | bc -l 2>/dev/null)" = "1" ] && BE_COLOR="brightgreen"
          echo "{\"schemaVersion\":1,\"label\":\"backend tests\",\"message\":\"${TOTAL_PASS} passed\",\"color\":\"brightgreen\"}" > .badges/backend-tests.json
          echo "{\"schemaVersion\":1,\"label\":\"backend coverage\",\"message\":\"${BE_COVERAGE}%\",\"color\":\"${BE_COLOR}\"}" > .badges/backend-coverage.json
          
          echo "## Backend: ${TOTAL_PASS} tests, ${BE_COVERAGE}% coverage" >> $GITHUB_STEP_SUMMARY

      - name: Backend tests (quick — no coverage)
        if: steps.changes.outputs.backend == 'false'
        run: npm run test:unit

      - name: Install Playwright browser
        if: steps.changes.outputs.frontend == 'true'
        run: npx playwright install chromium --with-deps 2>/dev/null || true

      - name: Instrument frontend JS
        if: steps.changes.outputs.frontend == 'true'
        run: sh scripts/instrument-frontend.sh

      - name: Start test server (instrumented)
        if: steps.changes.outputs.frontend == 'true'
        run: |
          COVERAGE=1 PORT=13581 node server.js &
          echo $! > .server.pid
          echo "Server PID: $(cat .server.pid)"
          # Health-check poll loop (up to 30s)
          for i in $(seq 1 30); do
            if curl -sf http://localhost:13581/api/stats > /dev/null 2>&1; then
              echo "Server ready after ${i}s"
              break
            fi
            if [ "$i" -eq 30 ]; then
              echo "Server failed to start within 30s"
              exit 1
            fi
            sleep 1
          done

      - name: Run Playwright E2E tests
        if: steps.changes.outputs.frontend == 'true'
        run: BASE_URL=http://localhost:13581 node test-e2e-playwright.js 2>&1 | tee e2e-output.txt

      - name: Extract coverage + generate report
        if: always() && steps.changes.outputs.frontend == 'true'
        run: |
          BASE_URL=http://localhost:13581 node scripts/collect-frontend-coverage.js 2>&1 | tee fe-coverage-output.txt
          
          E2E_PASS=$(grep -oP '[0-9]+(?=/)' e2e-output.txt | tail -1)
          
          mkdir -p .badges
          if [ -f .nyc_output/frontend-coverage.json ]; then
            npx nyc report --reporter=text-summary --reporter=text 2>&1 | tee fe-report.txt
            FE_COVERAGE=$(grep 'Statements' fe-report.txt | head -1 | grep -oP '[\d.]+(?=%)' || echo "0")
            FE_COVERAGE=${FE_COVERAGE:-0}
            FE_COLOR="red"
            [ "$(echo "$FE_COVERAGE > 50" | bc -l 2>/dev/null)" = "1" ] && FE_COLOR="yellow"
            [ "$(echo "$FE_COVERAGE > 80" | bc -l 2>/dev/null)" = "1" ] && FE_COLOR="brightgreen"
            echo "{\"schemaVersion\":1,\"label\":\"frontend coverage\",\"message\":\"${FE_COVERAGE}%\",\"color\":\"${FE_COLOR}\"}" > .badges/frontend-coverage.json
            echo "## Frontend: ${FE_COVERAGE}% coverage" >> $GITHUB_STEP_SUMMARY
          fi
          echo "{\"schemaVersion\":1,\"label\":\"frontend tests\",\"message\":\"${E2E_PASS:-0} E2E passed\",\"color\":\"brightgreen\"}" > .badges/frontend-tests.json

      - name: Stop test server
        if: always() && steps.changes.outputs.frontend == 'true'
        run: |
          if [ -f .server.pid ]; then
            kill $(cat .server.pid) 2>/dev/null || true
            rm -f .server.pid
            echo "Server stopped"
          fi

      - name: Frontend E2E only (no coverage)
        if: steps.changes.outputs.frontend == 'false'
        run: |
          fuser -k 13581/tcp 2>/dev/null || true
          PORT=13581 node server.js &
          SERVER_PID=$!
          sleep 5
          BASE_URL=http://localhost:13581 node test-e2e-playwright.js || true
          kill $SERVER_PID 2>/dev/null || true

      - name: Publish badges
        if: always()
        continue-on-error: true
        run: |
          git config user.name "github-actions"
          git config user.email "actions@github.com"
          git remote set-url origin https://x-access-token:${{ github.token }}@github.com/${{ github.repository }}.git
          git add .badges/ -f
          git diff --cached --quiet || (git commit -m "ci: update test badges [skip ci]" && git push) || echo "Badge push failed"

  deploy:
    needs: [go-build, test]
    runs-on: self-hosted
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: '22'

      - name: Validate JS
        run: sh scripts/validate.sh

      - name: Build image
        run: |
          docker build -t meshcore-analyzer:latest .
          echo "Built $(git rev-parse --short HEAD)"

      - name: Deploy to staging
        run: |
          set -e

          # Source environment overrides from deploy dir or home
          if [ -f /opt/meshcore-deploy/.env ]; then
            set -a; source /opt/meshcore-deploy/.env; set +a
            echo "Sourced /opt/meshcore-deploy/.env"
          elif [ -f "$HOME/.env" ]; then
            set -a; source "$HOME/.env"; set +a
            echo "Sourced $HOME/.env"
          else
            echo "No .env found, using defaults"
          fi

          # Ensure data directories exist
          STAGING_DIR="${STAGING_DATA_DIR:-$HOME/meshcore-staging-data}"
          mkdir -p "${PROD_DATA_DIR:-$HOME/meshcore-data}" "$STAGING_DIR"

          # Ensure staging has a Caddyfile (generate from template if missing)
          if [ ! -f "$STAGING_DIR/Caddyfile" ]; then
            cp docker/Caddyfile.staging "$STAGING_DIR/Caddyfile"
            echo "Generated staging Caddyfile"
          fi

          # Ensure staging has a config.json (copy from prod if missing)
          if [ ! -f "$STAGING_DIR/config.json" ]; then
            PROD_DIR="${PROD_DATA_DIR:-$HOME/meshcore-data}"
            if [ -f "$PROD_DIR/config.json" ]; then
              cp "$PROD_DIR/config.json" "$STAGING_DIR/config.json"
            elif [ -f /opt/meshcore-deploy/config.json ]; then
              cp /opt/meshcore-deploy/config.json "$STAGING_DIR/config.json"
            else
              echo '{}' > "$STAGING_DIR/config.json"
              echo "WARNING: No config.json found, created empty one"
            fi
          fi

          # Copy compose file to deploy dir so manage.sh can use it
          mkdir -p /opt/meshcore-deploy
          cp docker-compose.yml /opt/meshcore-deploy/docker-compose.yml

          # Run compose from the repo checkout (where docker-compose.yml lives)
          docker rm -f meshcore-staging 2>/dev/null || true
          docker compose --profile staging up -d staging

          # Wait for Docker healthcheck — give it up to 5 minutes (big DB)
          for i in $(seq 1 300); do
            HEALTH=$(docker inspect meshcore-staging --format '{{.State.Health.Status}}' 2>/dev/null || echo "starting")
            if [ "$HEALTH" = "healthy" ]; then
              echo "Staging healthy after ${i}s"
              break
            fi
            if [ "$i" -eq 300 ]; then
              echo "Staging failed health check after 300s"
              docker logs meshcore-staging --tail 50
              exit 1
            fi
            sleep 1
          done

      - name: Smoke test staging
        run: |
          curl -f http://localhost:81/api/stats || exit 1
          curl -f http://localhost:81/api/nodes || exit 1
          echo "Staging smoke tests passed"

      - name: Promotion instructions
        run: |
          echo "## Staging Deployed ✓" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Commit:** \`$(git rev-parse --short HEAD)\` — $(git log -1 --format=%s)" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "**Staging URL:** http://<VM_HOST>:81" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "To promote to production:" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`bash" >> $GITHUB_STEP_SUMMARY
          echo "ssh deploy@<VM_HOST>" >> $GITHUB_STEP_SUMMARY
          echo "cd /opt/meshcore-deploy" >> $GITHUB_STEP_SUMMARY
          echo "./manage.sh promote" >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY