name: CI

on:
  push:
    branches:
      - master
    tags:
      - v*
  pull_request:
    branches:
      - "**"

env:
  CARGO_TERM_COLOR: always
  CARGO_INCREMENTAL: 0

jobs:
  unix-tests:
    name: Unix tests
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: true
      matrix:
        os:
          - macos-latest
          - ubuntu-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@v2

      # Work around https://github.com/actions/cache/issues/403.
      - name: Use GNU tar
        if: matrix.os == 'macos-latest'
        run: |
          echo PATH="/usr/local/opt/gnu-tar/libexec/gnubin:$PATH" >> $GITHUB_ENV

      - name: Read Emscripten version
        run: |
          printf 'EMSCRIPTEN_VERSION=%s\n' "$(cat cli/loader/emscripten-version)" >> $GITHUB_ENV

      - name: Cache artifacts
        id: cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}-emscripten-${{ env.EMSCRIPTEN_VERSION }}

      - name: Install rust
        if: steps.cache.outputs.cache-hit != 'true'
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal

      - name: Check Rust code formatting
        run: cargo fmt -- --check

      - name: Install emscripten
        uses: mymindstorm/setup-emsdk@v10
        with:
          version: ${{ env.EMSCRIPTEN_VERSION }}

      - name: Build C library
        run: make

      - name: Build wasm library
        run: script/build-wasm

      - name: Build CLI
        run: |
          RUSTFLAGS="-D warnings"
          cargo build --release

      - name: Set up fixture parsers
        run: |
          script/fetch-fixtures
          script/generate-fixtures
          script/generate-fixtures-wasm

      - name: Run main tests
        run: cargo test

      - name: Run wasm tests
        run: script/test-wasm

      - name: Run benchmarks
        run: script/benchmark

      - name: Compress CLI binary
        if: startsWith(github.ref, 'refs/tags/v')
        run: |
          cp target/release/tree-sitter .
          export platform=$(echo ${{ runner.os }} | awk '{print tolower($0)}')
          gzip --suffix "-${platform}-x64.gz" tree-sitter

      - name: Release
        uses: softprops/action-gh-release@v1
        if: startsWith(github.ref, 'refs/tags/v')
        with:
          draft: true
          files: |
            tree-sitter-*.gz
            lib/binding_web/tree-sitter.js
            lib/binding_web/tree-sitter.wasm
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  windows-tests:
    name: Windows tests
    runs-on: windows-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@v2

      - name: Cache artifacts
        id: cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}

      - name: Install rust
        if: steps.cache.outputs.cache-hit != 'true'
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          profile: minimal

      - name: Check Rust code formatting
        run: cargo fmt -- --check

      - name: Build CLI
        run: |
          $env:RUSTFLAGS="-D warnings"
          cargo build --release

      - name: Set up fixture parsers
        run: |
          script/fetch-fixtures.cmd
          script/generate-fixtures.cmd

      - name: Run main tests
        run: script/test