# Inspired by LLVM's pr-code-format.yml at
# https://github.com/llvm/llvm-project/blob/main/.github/workflows/pr-code-format.yml

name: Check code formatting
on:
  pull_request:
    branches:
      - main

jobs:
  code_formatter:
    runs-on: [self-hosted, X64]
    if: github.repository == 'FEX-Emu/FEX'

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Checkout through merge base
        uses: rmacklin/fetch-through-merge-base@v0
        timeout-minutes: 3
        with:
          base_ref: ${{ github.event.pull_request.base.ref }}
          head_ref: ${{ github.event.pull_request.head.sha }}
          deepen_length: 500

      - name: Get changed files
        run: |
          BASE=$(git merge-base main HEAD)
          FILES=$(git diff --name-only "$BASE" | tr '\n' ',' | sed 's/,$//')
          echo "CHANGED_FILES=$FILES" >> $GITHUB_ENV

          echo "Changed files:"
          echo "$FILES"

      - name: Check git-clang-format-19 exists
        run: which git-clang-format-19

      - name: Setup Python env
        uses: actions/setup-python@v4
        with:
          python-version: 3.11
          cache: pip
          cache-dependency-path: ./External/code-format-helper/requirements_formatting.txt

      - name: Install python dependencies
        run: pip install -r ./External/code-format-helper/requirements_formatting.txt

      - name: Run code formatter
        env:
          CLANG_FORMAT_PATH: git-clang-format-19
          GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}
          START_REV: ${{ github.event.pull_request.base.sha }}
          END_REV: ${{ github.event.pull_request.head.sha }}
        run: |
          python ./External/code-format-helper/code-format-helper.py \
            --repo "FEX-Emu/FEX" \
            --issue-number "$GITHUB_PR_NUMBER" \
            --start-rev "$START_REV" \
            --end-rev "$END_REV" \
            --changed-files "$CHANGED_FILES"