name: Quality

on:
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  check-changes:
    runs-on: ubuntu-latest
    outputs:
      has_go_changes: ${{ steps.check.outputs.has_go_changes }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Check for Go changes
        id: check
        run: |
          if git diff --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.go$|go\.(mod|sum)$'; then
            echo "has_go_changes=true" >> $GITHUB_OUTPUT
          else
            echo "has_go_changes=false" >> $GITHUB_OUTPUT
          fi

  check-go-mod-tidy:
    runs-on: ubuntu-latest
    needs: check-changes
    if: needs.check-changes.outputs.has_go_changes == 'true'
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Go
        uses: actions/setup-go@v4
        with:
          go-version: 1.26

      - name: Check tidyness
        run: |
          go mod tidy
          if [ -n "$(git status --porcelain go.mod go.sum)" ]; then
            echo "go.mod or go.sum changed after go mod tidy; please run go mod tidy and commit the result" >&2
            git diff go.mod go.sum >&2
            exit 1
          fi


  check-go-vet:
    runs-on: ubuntu-latest
    needs: check-changes
    if: needs.check-changes.outputs.has_go_changes == 'true'
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Go
        uses: actions/setup-go@v4
        with:
          go-version: 1.26

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

  run-tests:
    runs-on: ubuntu-latest
    needs: check-changes
    if: needs.check-changes.outputs.has_go_changes == 'true'
    steps:
      - name: Checkout code
        uses: actions/checkout@v3

      - name: Setup Go
        uses: actions/setup-go@v4
        with:
          go-version: 1.26

      - name: Run Unit tests
        run: |
          go test -race -covermode atomic -coverprofile=coverage.out ./...