name: CI

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

env:
  REGISTRY: forgejo.riotpiao.com
  IMAGE: forgejo.riotpiao.com/rock/api-gateway
  DOCKER_HOST: tcp://localhost:2375

jobs:
  ci:
    name: CI
    runs-on: golang
    steps:
      - name: Install Node.js and Docker
        run: |
          apt-get update
          apt-get install -y nodejs docker.io

      - name: Checkout code
        uses: actions/checkout@v4

      - name: Go vet
        run: go vet ./...

      - name: Go test
        run: go test ./...

      - name: Get short SHA
        id: sha
        run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT

      - name: Registry login
        run: |
          echo "${REGISTRY_TOKEN}" | docker login "${REGISTRY}" \
            --username "${REGISTRY_USER}" --password-stdin
        env:
          REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
          REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}

      - name: Test build only (unit tests)
        run: |
          echo "Running unit tests..."
          go test ./...
          echo "Running static analysis..."
          go vet ./...

      - name: Build Docker image
        run: |
          docker build --no-cache \
            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
            -f Dockerfile .
          echo "Built image: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"

      - name: Push test image (SHA tag only, not latest yet)
        run: |
          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
          echo "✓ Pushed test image: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"

      - name: Setup kubeconfig for test pod
        run: |
          mkdir -p ~/.kube
          echo "${KUBECONFIG_B64}" | base64 -d > ~/.kube/config
        env:
          KUBECONFIG_B64: ${{ secrets.KUBECONFIG_B64 }}
        continue-on-error: true

      - name: Install kubectl
        run: |
          curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
          chmod +x kubectl
          sudo mv kubectl /usr/local/bin/

      - name: Deploy test pod from new image
        run: |
          echo "Deploying test pod with new image: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"
          kubectl run api-gateway-test-${{ steps.sha.outputs.short_sha }} \
            --image="${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
            --namespace=api \
            --restart=Never \
            --port=8080 \
            --labels="app=api-gateway,managed-by=argocd,role=test,test-run=${{ steps.sha.outputs.short_sha }}" \
            --overrides='{"spec":{"containers":[{"name":"gateway","securityContext":{"runAsNonRoot":true,"runAsUser":65532,"allowPrivilegeEscalation":false}}]}}'
          
          echo "Waiting for test pod to be ready..."
          kubectl wait --for=condition=ready pod -l run=api-gateway-test-${{ steps.sha.outputs.short_sha }} -n api --timeout=60s
        continue-on-error: true

      - name: Run integration tests against test pod
        run: |
          echo "Running integration tests against test pod..."
          # Port-forward to test pod
          kubectl port-forward -n api pod/api-gateway-test-${{ steps.sha.outputs.short_sha }} 8080:8080 &
          PF_PID=$!
          sleep 3
          
          # Run tests
          TEST_RESULT=0
          go test -v -tags=integration -timeout=5m ./internal/integration/... || TEST_RESULT=$?
          
          kill $PF_PID || true
          exit $TEST_RESULT
        env:
          GATEWAY_URL: http://localhost:8080
        continue-on-error: false

      - name: Promote image to latest (only if tests passed)
        if: success()
        run: |
          docker pull "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
          docker tag "${IMAGE}:${{ steps.sha.outputs.short_sha }}" "${IMAGE}:latest"
          docker push "${IMAGE}:latest"
          echo "✓ Promoted ${IMAGE}:${{ steps.sha.outputs.short_sha }} to latest"

      - name: Cleanup test pod
        if: always()
        run: |
          kubectl delete pod api-gateway-test-${{ steps.sha.outputs.short_sha }} -n api 2>/dev/null || true
        continue-on-error: true

      - name: Prune unused images
        run: docker image prune -a --force 2>&1 | tail -3 || true