name: GoChat CI/CD Pipeline
# Reference: Chatwoot uses CircleCI for CI/CD; this is the Go equivalent using GitHub Actions
# Multi-stage pipeline: test → build → security → deploy

on:
  push:
    branches: [main, develop, 'release/**']
  pull_request:
    branches: [main]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: gochat/gochat
  SHANGWUTONG_IMAGE_NAME: gochat/shangwutong
  GOPROXY: https://goproxy.cn,direct

jobs:
  # ---- Stage 1: Lint + Test ----
  test:
    name: Test & Lint
    runs-on: ubuntu-latest
    strategy:
      matrix:
        db-mode: [postgres, sqlite]
    services:
      postgres:
        image: pgvector/pgvector:pg16
        env:
          POSTGRES_DB: gochat_test
          POSTGRES_USER: postgres
          POSTGRES_PASSWORD: postgres
        ports:
          - 5432:5432
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
      redis:
        image: redis:7-alpine
        ports:
          - 6379:6379
        options: >-
          --health-cmd "redis-cli ping"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: '1.25'

      # Lint
      - name: Run golangci-lint
        uses: golangci/golangci-lint-action@v6
        with:
          version: v1.64
          working-directory: backend

      # Vet
      - name: Run go vet
        working-directory: backend
        run: go vet ./...

      # Unit + Integration Tests
      - name: Run unit & integration tests
        working-directory: backend
        env:
          GOCHAT_ENV: test
          GOCHAT_TEST_DB: ${{ matrix.db-mode }}
          GOCHAT_DATABASE_DSN: postgres://postgres:postgres@localhost:5432/gochat_test?sslmode=disable
          GOCHAT_REDIS_DSN: redis://localhost:6379
          GOPROXY: https://goproxy.cn,direct
        run: go test -v -race -coverprofile=coverage.out -timeout 180s ./internal/... ./pkg/... ./cmd/...

      # E2E Tests (only on postgres matrix)
      - name: Run e2e tests
        if: matrix.db-mode == 'postgres'
        working-directory: backend
        env:
          GOCHAT_ENV: test
          GOCHAT_DATABASE_DSN: postgres://postgres:postgres@localhost:5432/gochat_test?sslmode=disable
          GOCHAT_REDIS_DSN: redis://localhost:6379
        run: go test -v -timeout 120s ./tests/e2e/...

      # Benchmark (quick sanity check, not full bench)
      - name: Run benchmarks
        working-directory: backend
        env:
          GOCHAT_ENV: test
          GOCHAT_TEST_DB: ${{ matrix.db-mode }}
          GOCHAT_DATABASE_DSN: postgres://postgres:postgres@localhost:5432/gochat_test?sslmode=disable
        run: go test -bench=. -benchtime=1s -run=^$ -timeout 60s ./internal/service/... ./pkg/crypto/...

      # Coverage report
      - name: Upload coverage
        if: matrix.db-mode == 'postgres'
        uses: codecov/codecov-action@v4
        with:
          files: backend/coverage.out

  shangwutong:
    name: Shangwutong Connector
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: channels/shangwutong
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: '1.26.4'
          cache-dependency-path: channels/shangwutong/go.sum
      - name: Verify sqlc generation
        run: go tool sqlc generate && git diff --exit-code -- db/generated
      - name: Test with race detector
        run: go test -race ./...
      - name: Vet and build
        run: go vet ./... && go build -o /tmp/shangwutong-build-check ./cmd/shangwutong

  # ---- Stage 2: Security Scan ----
  security:
    name: Security Scan
    needs: [test, shangwutong]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-go@v5
        with:
          go-version: '1.25'

      # Gosec — Go security scanner
      - name: Run gosec
        uses: securego/gosec@master
        with:
          args: '-no-fail ./...'
        working-directory: backend

      # Dependency vulnerability scan
      - name: Run govulncheck
        working-directory: backend
        run: go install golang.org/x/vuln/cmd/govulncheck@latest && govulncheck ./...

      # Trivy filesystem scan
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@master
        with:
          scan-type: 'fs'
          scan-ref: '.'
          format: 'table'
          exit-code: '1'
          severity: 'CRITICAL,HIGH'

  # ---- Stage 3: Build Docker Image ----
  build:
    name: Build Docker Image
    needs: [test, shangwutong, security]
    runs-on: ubuntu-latest
    if: github.event_name == 'push'  # Only build on push, not PRs
    permissions:
      contents: read
      packages: write
    outputs:
      image_tag: ${{ steps.meta.outputs.tags }}
      image_digest: ${{ steps.build.outputs.digest }}
    steps:
      - uses: actions/checkout@v4

      # Set up Docker Buildx for multi-platform builds
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      # Login to GHCR
      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Extract metadata (tags, labels)
      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha

      # Build and push main GoChat image
      - name: Build and push GoChat image
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./deploy/docker/Dockerfile
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ github.ref_name }}
            COMMIT_SHA=${{ github.sha }}
            BUILD_DATE=${{ github.event.head_commit.timestamp }}
          cache-from: type=gha,scope=gochat
          cache-to: type=gha,mode=max,scope=gochat

      - name: Extract Shangwutong connector metadata
        id: shangwutong_meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.SHANGWUTONG_IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha

      - name: Build and push Shangwutong connector image
        id: shangwutong_build
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./channels/shangwutong/Dockerfile
          push: true
          tags: ${{ steps.shangwutong_meta.outputs.tags }}
          labels: ${{ steps.shangwutong_meta.outputs.labels }}
          cache-from: type=gha,scope=shangwutong
          cache-to: type=gha,mode=max,scope=shangwutong

      # Scan Docker images with Trivy
      - name: Scan GoChat image
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build.outputs.digest }}
          format: 'table'
          exit-code: '1'
          severity: 'CRITICAL,HIGH'

      - name: Scan Shangwutong connector image
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: ${{ env.REGISTRY }}/${{ env.SHANGWUTONG_IMAGE_NAME }}@${{ steps.shangwutong_build.outputs.digest }}
          format: 'table'
          exit-code: '1'
          severity: 'CRITICAL,HIGH'