name: build and deploy docs

on:
  schedule:
    - cron: '0 */8 * * *' # every 8 hours
  push:
    branches:
      - "main"
  pull_request:

jobs:
  build:
    name: build and deploy docs
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@v3

      - name: install elan
        run: |
          set -o pipefail
          curl https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -sSf | sh -s -- --default-toolchain none -y
          ~/.elan/bin/lean --version
          echo "$HOME/.elan/bin" >> $GITHUB_PATH

      - name: Checkout and compile mathlib4
        run: |
          cd ../
          git clone https://github.com/leanprover-community/mathlib4
          cd mathlib4
          lake exe cache get
          lake build

      - name: generate docs (PRs only)
        if: github.event_name == 'pull_request'
        run: |
          cd ../
          ./doc-gen4/deploy_docs.sh "mathlib4" "doc-gen4" "false" "LeanInk"
        env:
          DOC_GEN_REF: ${{ github.event.pull_request.head.sha }}

      - name: generate and deploy docs (main only)
        if: (github.event_name == 'push' || github.event_name == 'schedule') && github.repository == 'leanprover/doc-gen4' && github.ref_name == 'main'
        run: |
          cd ../
          ./doc-gen4/deploy_docs.sh "mathlib4" "doc-gen4" "true" "LeanInk"
        env:
          MATHLIB4_DOCS_KEY: ${{ secrets.MATHLIB4_DOCS_KEY }}
          DOC_GEN_REF: ${{ github.sha }}