name: Build and deploy documentation

on:
  push:
    # Runs on pushes targeting the release branches
    branches:
      - main
      - nixos-24.05

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
permissions:
  contents: read
  pages: write
  id-token: write

# Allow one concurrent deployment
concurrency:
  group: "pages"
  cancel-in-progress: true

jobs:
  deploy:
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    timeout-minutes: 40
    steps:
      - name: Install nix
        uses: cachix/install-nix-action@v26
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Configure cachix
        uses: cachix/cachix-action@v15
        with:
          name: nix-community
          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"

      - run: |
          set -ex
          mkdir -p docs-build
          nix build github:nix-community/nixvim#docs
          cp -r result/share/doc/nixvim/* docs-build
          nix build github:nix-community/nixvim/nixos-24.05#docs
          # TODO: use the new path when 24.11 hits
          cp -r result/share/doc docs-build/stable

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: "docs-build"

      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4