name: Deploy documentation

on:
    push:
        branches: [develop]
    workflow_dispatch: {}

jobs:
    docs:
        name: GitHub Pages
        runs-on: ubuntu-latest
        steps:
            - name: Fetch element-desktop
              uses: actions/checkout@v4
              with:
                  repository: vector-im/element-desktop
                  path: element-desktop

            - name: Fetch element-web
              uses: actions/checkout@v4
              with:
                  path: element-web

            - name: Fetch matrix-react-sdk
              uses: actions/checkout@v4
              with:
                  repository: matrix-org/matrix-react-sdk
                  path: matrix-react-sdk

            - name: Setup mdBook
              uses: peaceiris/actions-mdbook@v1
              with:
                  mdbook-version: "0.4.10"

            - name: Install mdbook-combiner
              run: cargo install mdbook-combiner

            - name: Prepare docs
              run: |
                  mkdir -p docs/element-{desktop,web} docs/matrix-react-sdk

                  mv element-desktop/docs "docs/element-desktop/Element Desktop"
                  mv element-desktop/README.md docs/element-desktop/

                  mv element-web/docs "docs/element-web/Element Web"
                  mv element-web/README.md docs/element-web/

                  mv matrix-react-sdk/docs "docs/matrix-react-sdk/Matrix React SDK"
                  mv matrix-react-sdk/README.md docs/matrix-react-sdk/

                  mdbook-combiner -m docs
                  mv SUMMARY.md docs/

                  mv element-web/book.toml .

            - name: Build docs
              run: mdbook build

            - name: Deploy to gh pages
              uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3.9.3
              with:
                  github_token: ${{ secrets.GITHUB_TOKEN }}
                  publish_dir: ./book