Generic github pipeline for a go project

go.yml

name: Build and unit test

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

env:
  TINYGO_VERSION: '0.30.0'
  GOLANGCI_LINT_VERSION: '1.55.2'

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        go-version: ['1.21']
    steps:
    - uses: actions/checkout@v3

    - name: Cache Go modules
      uses: actions/cache@v3
      with:
        path: ~/go/pkg/mod
        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
        restore-keys: |
          ${{ runner.os }}-go-

    - name: Set up Go
      uses: actions/setup-go@v4
      with:
        go-version: ${{ matrix.go-version }}

    - name: Build
      run: go build -v ./...

    - name: Check code formatting
      run: |
        if [ -n "$(gofmt -l .)" ]; then
          echo "Code is not formatted according to gofmt standards."
          exit 1
        fi

    - name: Install golangci-lint
      run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v${{ env.GOLANGCI_LINT_VERSION }}

    - name: Run golangci-lint
      run: golangci-lint run ./...

    - name: Test with coverage
      run: |
        go test -coverprofile=coverage.out ./...
        go tool cover -func=coverage.out -o coverage.txt
        awk '/^total:/ {print $3}' coverage.txt | sed 's/%//' | {
          read COVERAGE
          echo "Code coverage: $COVERAGE%"
          MIN_COVERAGE=20
          echo "Minimum coverage: $MIN_COVERAGE%"
          if (( $(echo "$COVERAGE < $MIN_COVERAGE" | bc -l) )); then
            echo "Coverage is below minimum."
            exit 1
          fi
        }

    - name: Install deadcode
      run: go install golang.org/x/tools/cmd/deadcode@latest

    - name: Run deadcode and fail if dead code is found
      run: |
        DEADCODE_OUTPUT=$(deadcode ./...)
        if [ -n "$DEADCODE_OUTPUT" ]; then
          echo "Dead code detected:"
          echo "$DEADCODE_OUTPUT"
          exit 1
        else
          echo "No dead code found."
        fi

    - name: Cache TinyGo
      uses: actions/cache@v3
      with:
        path: ~/tinygo
        key: ${{ runner.os }}-tinygo-${{ env.TINYGO_VERSION }}
        restore-keys: |
          ${{ runner.os }}-tinygo-

    - name: Set up TinyGo
      run: |
        wget -nv https://github.com/tinygo-org/tinygo/releases/download/v${{ env.TINYGO_VERSION }}/tinygo_${{ env.TINYGO_VERSION }}_amd64.deb
        sudo dpkg -i tinygo_${{ env.TINYGO_VERSION }}_amd64.deb

    - name: Compile to WASM with TinyGo
      run: |
        tinygo build -o main.wasm -target wasm ./...