name: CI

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

permissions:
  contents: read

jobs:
  lint-and-test:
    name: Lint + build + test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: "1.26.x"
          cache: false

      - name: Install templ
        run: go install github.com/a-h/templ/cmd/templ@v0.3.1001

      - name: Generate templ
        run: templ generate

      - name: Verify go.mod + go.sum are tidy
        run: |
          go mod tidy
          git diff --exit-code go.mod go.sum

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

      - name: Build (host)
        run: |
          go build ./...
          GOOS=linux GOARCH=amd64 go build ./...

      - name: Test
        run: go test -race -count=1 -coverprofile=coverage.out ./...

      - name: Coverage summary
        run: |
          go tool cover -func=coverage.out | tee coverage.txt
          go tool cover -html=coverage.out -o coverage.html

      - name: Upload coverage artifact
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: coverage
          path: |
            coverage.out
            coverage.txt
            coverage.html
          retention-days: 14