go-ci.yml

name: Go CI/CD

on:
  push:
    branches: [ main ]
    tags: 
      - 'v0.[1-9][0-9]*.[0-9]+'  # Matches v0.1.0, v0.2.0, v0.10.0, etc.
      - 'v0.[1-9][0-9]*.[0-9]+[0-9]'  # Also matches v0.1.10, v0.2.23, etc.
  pull_request:
    branches: [ main ]

permissions:
  contents: write
  pull-requests: write

jobs:
  test:
    name: Test & Lint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Go
        uses: actions/setup-go@v4
        with:
          go-version: '1.21'
          cache: true
    
      - name: Install dependencies
        run: |
          go mod download
          go install golang.org/x/tools/cmd/goimports@latest

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

      - name: Run golangci-lint
        uses: golangci/golangci-lint-action@v3
        with:
          version: latest
          args: --timeout=5m --out-format=colored-line-number --issues-exit-code=1
          only-new-issues: true
          skip-pkg-cache: true
          skip-build-cache: false

      - name: Upload coverage
        if: success()
        uses: codecov/codecov-action@v3
        with:
          file: ./coverage.txt
          fail_ci_if_error: false
          verbose: true

  build:
    name: Build Binary
    needs: test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Go
        uses: actions/setup-go@v4
        with:
          go-version: '1.21'
          cache: true

      - name: Build
        run: |
          VERSION=$(git describe --tags --always --dirty)
          mkdir -p hapax
          go build -v -ldflags="-X main.Version=${VERSION}" -o hapax/hapax .
        
      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: hapax-binary
          path: ./hapax
          retention-days: 5

  release:
    name: Create Release
    needs: [test, build]
    runs-on: ubuntu-latest
    if: startsWith(github.ref, 'refs/tags/')
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Generate changelog
        id: changelog
        run: |
          echo "CHANGELOG<<EOF" >> $GITHUB_ENV
          echo "## What's Changed" >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          
          # Features
          echo "### Features" >> $GITHUB_ENV
          git log $(git describe --tags --abbrev=0 HEAD^)..HEAD --pretty=format:'%s' | grep -i '^feat' | sed 's/feat: /* /' >> $GITHUB_ENV || true
          
          # Fixes
          echo "" >> $GITHUB_ENV
          echo "### Fixes" >> $GITHUB_ENV
          git log $(git describe --tags --abbrev=0 HEAD^)..HEAD --pretty=format:'%s' | grep -i '^fix' | sed 's/fix: /* /' >> $GITHUB_ENV || true
          
          # Documentation
          echo "" >> $GITHUB_ENV
          echo "### Documentation" >> $GITHUB_ENV
          git log $(git describe --tags --abbrev=0 HEAD^)..HEAD --pretty=format:'%s' | grep -i '^docs' | sed 's/docs: /* /' >> $GITHUB_ENV || true
          
          # Performance
          echo "" >> $GITHUB_ENV
          echo "### Performance Improvements" >> $GITHUB_ENV
          git log $(git describe --tags --abbrev=0 HEAD^)..HEAD --pretty=format:'%s' | grep -i '^perf' | sed 's/perf: /* /' >> $GITHUB_ENV || true
          
          echo "EOF" >> $GITHUB_ENV

      - name: Download binary
        uses: actions/download-artifact@v4
        with:
          name: hapax-binary
          path: ./

      - name: Create Release
        uses: softprops/action-gh-release@v1
        with:
          body: ${{ env.CHANGELOG }}
          files: ./hapax/hapax
          draft: false
          prerelease: false
          generate_release_notes: true