name: CI

# Pull requests into main: formatting (StyLua, .stylua.toml), and the smoke
# test (tests/smoke.lua) on the oldest Neovim the README supports and the
# current stable. Versions are pinned, with checksums, so a new release
# can't fail CI on its own.

on:
  pull_request:
    branches: [main]

jobs:
  format:
    name: StyLua
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install StyLua
        run: |
          set -eo pipefail
          V=2.5.2
          case "$(uname -m)" in
            x86_64) A=x86_64; SUM=bcb0d855e91f102f28a370e850f8566b3b44b79e6274d806ea5246837c0fd5ab ;;
            aarch64) A=aarch64; SUM=0ef2ebf0b7e5a652b65c4cb96c6d9ffb3981a98547de3c764465bbf54a8d761a ;;
            *) echo "::error::no StyLua for $(uname -m)"; exit 1 ;;
          esac
          F="stylua-linux-$A.zip"
          curl -fsSL -o "$RUNNER_TEMP/$F" "https://github.com/JohnnyMorganz/StyLua/releases/download/v$V/$F"
          echo "$SUM  $RUNNER_TEMP/$F" | sha256sum -c -
          unzip -q "$RUNNER_TEMP/$F" -d "$RUNNER_TEMP/stylua"
          install "$RUNNER_TEMP/stylua/stylua" /usr/local/bin/

      - name: Check
        run: |
          if ! stylua --check .; then
            echo "::error::not StyLua-formatted (run stylua .)"
            exit 1
          fi

  test:
    name: Smoke test (Neovim ${{ matrix.nvim }})
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - nvim: 0.11.7
            x86_64: 38a7c6317f94503841096c00e8fde05ef04b9472fc9d7d62b6e033cecd6f7991
            arm64: 99bb3c53604e83ce18fc0b459e34cf1a5e212f4e5fbe2eb136b3c18092ae9905
          - nvim: 0.12.5
            x86_64: bce0f56eda1f1b1db6eee8f4133d7a38813ea07933837dd1777411ca384c6875
            arm64: 1aa5ca085249580ae0f91eb14f27ec0919773ff2d99a163d03f3d6c21ac29725
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Neovim
        env:
          V: ${{ matrix.nvim }}
          SUM_X86_64: ${{ matrix.x86_64 }}
          SUM_ARM64: ${{ matrix.arm64 }}
        run: |
          set -eo pipefail
          case "$(uname -m)" in
            x86_64) A=x86_64; SUM=$SUM_X86_64 ;;
            aarch64) A=arm64; SUM=$SUM_ARM64 ;;
            *) echo "::error::no Neovim for $(uname -m)"; exit 1 ;;
          esac
          F="nvim-linux-$A.tar.gz"
          curl -fsSL -o "$RUNNER_TEMP/$F" "https://github.com/neovim/neovim/releases/download/v$V/$F"
          echo "$SUM  $RUNNER_TEMP/$F" | sha256sum -c -
          tar -xzf "$RUNNER_TEMP/$F" -C "$RUNNER_TEMP"
          echo "$RUNNER_TEMP/nvim-linux-$A/bin" >> "$GITHUB_PATH"

      - name: Smoke test
        run: nvim --clean -l tests/smoke.lua