name: PR Checks

on:
  pull_request:
    branches: [main]
  workflow_dispatch:

jobs:
  checks:
    runs-on: ubuntu-latest
    container:
      image: golang:1.26-alpine
    env:
      CGO_ENABLED: "0"
    steps:
      - name: Install toolchain deps
        run: apk add --no-cache nodejs npm git tar

      - uses: actions/checkout@v4

      - name: Cache npm downloads
        uses: actions/cache@v4
        with:
          path: ~/.npm
          key: npm-${{ hashFiles('frontend/package-lock.json') }}
          restore-keys: npm-

      - name: Cache Go modules and build cache
        uses: actions/cache@v4
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: go-${{ hashFiles('go.sum') }}-${{ hashFiles('**/*.go') }}
          restore-keys: |
            go-${{ hashFiles('go.sum') }}-
            go-

      - name: Install frontend dependencies
        working-directory: frontend
        run: npm ci

      - name: Type-check and build frontend
        working-directory: frontend
        run: |
          npx vue-tsc -b
          npx vite build --outDir ../internal/server/static --emptyOutDir

      - name: Check Go formatting
        run: |
          unformatted="$(gofmt -l .)"
          if [ -n "$unformatted" ]; then
            echo "These files are not gofmt-formatted:"
            echo "$unformatted"
            exit 1
          fi

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

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

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

      - name: Test
        run: go test ./...