name: CI

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

permissions:
  contents: write
  pull-requests: write

jobs:
  gofmt:
    name: Check gofmt
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Run gofmt
        run: gofmt -w .

      - name: Check for changes
        id: diff
        run: |
          if [ -n "$(git diff --name-only)" ]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Create Pull Request
        if: steps.diff.outputs.changed == 'true'
        uses: peter-evans/create-pull-request@v7
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "chore: run gofmt"
          title: "chore: run gofmt"
          body: |
            Automated PR created by CI.

            `gofmt -w .` detected formatting differences and applied fixes.
          branch: auto/gofmt
          delete-branch: true

  go-generate:
    name: Check go generate
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Download SYCL Linux
        run: |
          wget https://github.com/intel/llvm/releases/download/v6.3.0/sycl_linux.tar.gz
          tar -xzf sycl_linux.tar.gz

      - name: Add SYCL bin to PATH
        run: |
          echo "${{ github.workspace }}/sycl_linux/bin" >> $GITHUB_PATH

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

      - name: Check for changes
        id: diff
        run: |
          if [ -n "$(git diff --name-only)" ]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Create Pull Request
        if: steps.diff.outputs.changed == 'true'
        uses: peter-evans/create-pull-request@v7
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "chore: run go generate"
          title: "chore: run go generate"
          body: |
            Automated PR created by CI.

            `go generate .` detected generated file differences and applied updates.
          branch: auto/go-generate
          delete-branch: true

  build:
    name: Build
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest]
        go-version: ["stable"]
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}

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

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

      - name: Build cmd/func2kernel
        run: go build ./cmd/func2kernel

  test:
    name: Test
    needs: build
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest]
        go-version: ["stable"]
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version: ${{ matrix.go-version }}

      - name: Run tests
        run: go test -v -count=1 ./...

  vet:
    name: Vet
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

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