name: CI

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

permissions:
  contents: write
  pull-requests: write

jobs:
  vet_build_test:
    name: Vet & Build & Test
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest]
    steps:
      - uses: actions/checkout@v4

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

      - name: Find and remove all .cpp files
        run: |
          find . -name "*.cpp" -type f -delete
        shell: bash

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

      - 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

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

      - name: Run golangci-lint
        uses: golangci/golangci-lint-action@v9
        with:
          version: v2.11

  go-generate:
    name: Run all Generates & PR
    runs-on: ubuntu-latest
    needs: [vet_build_test]
    steps:
      - uses: actions/checkout@v4

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

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

      - name: Add SYCL bin to PATH
        run: |
          ls -hl /tmp/sycl_linux
          echo "/tmp/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