name: CI/CD Pipeline

on:
  push:
    branches: [ main ]
    tags: [ 'v*' ]
  pull_request:
    branches: [ main ]

jobs:
  test:
    name: Test
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4

    - name: Set up Go
      uses: actions/setup-go@v5
      with:
        go-version: '1.21'

    - name: Run tests
      run: go test ./... -v -race -coverprofile=coverage.txt -covermode=atomic

    - name: Check code coverage
      run: |
        total=$(go tool cover -func=coverage.txt | grep total | awk '{print $3}' | sed 's/%//')
        echo "Total coverage: $total%"
        if (( $(echo "$total < 50" | bc -l) )); then
          echo "Error: Code coverage is below 50%"
          exit 1
        fi

  lint:
    name: Lint
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4

    - name: Set up Go
      uses: actions/setup-go@v5
      with:
        go-version: '1.21'

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

    - name: Run go fmt
      run: |
        if [ -n "$(gofmt -s -l .)" ]; then
          echo "Go code is not formatted:"
          gofmt -s -d .
          exit 1
        fi

  build:
    name: Build and Push Docker Image
    runs-on: ubuntu-latest
    needs: [test, lint]
    if: github.event_name == 'push'
    permissions:
      contents: read
      packages: write

    steps:
    - uses: actions/checkout@v4

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v3
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract metadata
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ghcr.io/${{ github.repository }}
        tags: |
          type=ref,event=branch
          type=ref,event=tag
          type=sha
          type=raw,value=latest,enable={{is_default_branch}}

    - name: Build and push
      uses: docker/build-push-action@v5
      with:
        context: .
        push: true
        tags: ${{ steps.meta.outputs.tags }}
        labels: ${{ steps.meta.outputs.labels }}