generate-docs.yml

# This workflow assumes that a `grain-linux-x64` binary was uploaded earlier within the same Action run.
# It downloads the binary, regenerates the documentation for the project, and pushes it to the ref that was checked out.
# Note: the `ref` should always be a branch for successful pushes!
name: Generate documentation

on:
  workflow_call:
    inputs:
      ref:
        description: Git reference to checkout
        type: string
        required: false
    secrets:
      PUSH_TOKEN:
        description: Token used to push back to repository
        required: true

jobs:
  generate-docs:
    name: Generate documentation
    runs-on: ubuntu-latest
    steps:
      - name: Setup bot user
        run: |
          git config --global user.email "bot@grain-lang.org"
          git config --global user.name "Grain Bot"

      - name: Checkout project
        uses: actions/checkout@v3
        with:
          ref: ${{ inputs.ref }}
          token: ${{ secrets.PUSH_TOKEN }}

      - name: Fetch linux binary
        uses: actions/download-artifact@v3
        with:
          name: grain-linux-x64

      - name: Untar download
        run: |
          tar -xvf grain.tar

      - name: Regenerate documentation
        run: |
          ./grain doc stdlib -o stdlib --current-version=$(./grain -v)
          git add stdlib
          git diff --staged --quiet || git commit -m 'chore(stdlib): Regenerate markdown documentation'
          git push