ci.yml

name: CI

on:
  pull_request:
  push:
    branches:
      - main
  schedule:
    - cron: "37 6 * * 1-5" # run once per day Monday-Friday at 7:37am

env:
  RUST_BACKTRACE: 1
  CARGO_TERM_COLOR: always

jobs:
  just:
    name: Build & Test ${{ matrix.target }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-linux-gnu
          - os: macos-latest
            target: aarch64-apple-darwin
          - os: macos-latest
            target: x86_64-apple-darwin
          - os: windows-latest
            target: x86_64-pc-windows-msvc
    runs-on: ${{ matrix.os || 'ubuntu-latest' }}
    env:
      CARGO_BUILD_TARGET: ${{ matrix.target }}
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Install rust
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.target }}
          toolchain: stable

      - uses: Swatinem/rust-cache@v2

      - uses: extractions/setup-just@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - run: just build test --target ${{ matrix.target }}

  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Install rust
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: nightly
          components: rustfmt, clippy

      - uses: Swatinem/rust-cache@v2

      - uses: extractions/setup-just@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - run: just lint

  ci-everything:
    name: All CI stages
    runs-on: ubuntu-latest
    if: always()
    needs:
      - just
      - lint
    steps:
      - run: exit 1
        if: ${{ always() && (contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')) }}

  init-release:
    name: Run the release workflow
    needs:
      - should-publish
      - ci-everything
    if: needs.should-publish.outputs.is_new_version == 'yes' && github.ref == 'refs/heads/main'
    uses: ./.github/workflows/release.yml
    with:
      publish-tag: ${{ needs.should-publish.outputs.publish-tag }}
    secrets:
      CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

  should-publish:
    name: Check if version changed
    runs-on: ubuntu-latest
    outputs:
      is_new_version: ${{ steps.check.outputs.is_new_version }}
      publish-tag: ${{ steps.tag.outputs.tag }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          persist-credentials: false
          submodules: recursive

      - name: Install rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: nightly
          profile: minimal
          override: true

      - uses: Swatinem/rust-cache@v2

      - id: check
        run: |
          set +e
          ./scripts/is_version_already_uploaded.sh tiktoken-rs
          export EXIT_CODE="$?"
          set -e
          if [[ "$EXIT_CODE" == "7" ]]; then
            echo '::set-output name=is_new_version::no'
          elif [[ "$EXIT_CODE" == "0" ]]; then
            echo '::set-output name=is_new_version::yes'
          else
            # Unexpected outcome, indicates a bug.
            exit "$EXIT_CODE"
          fi

      - name: Determine the tag name
        id: tag
        run: |
          export TAG_NAME="v$(./scripts/get_current_version.sh tiktoken-rs)"
          echo "tag=$TAG_NAME" >> $GITHUB_OUTPUT