name: Generate Doxygen Documentation

on:
  push:
    branches: [master]
  workflow_dispatch:

permissions:
  contents: write
  pages: write
  id-token: write

jobs:
  generate-docs:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v4

      - name: Install Doxygen and Graphviz
        run: |
          sudo apt-get update
          sudo apt-get install -y doxygen graphviz

      - name: Clone Doxygen Awesome Theme
        run: |
          git clone https://github.com/jothepro/doxygen-awesome-css.git doxygen-awesome
          mkdir -p docs/theme
          cp doxygen-awesome/doxygen-awesome.css docs/theme/
          cp doxygen-awesome/doxygen-awesome-dark-mode.css docs/theme/
          cp doxygen-awesome/doxygen-awesome-darkmode-toggle.js docs/theme/

      - name: Create and Configure Doxyfile
        run: |
          doxygen -g Doxyfile
          
          # Customize Doxyfile settings
          sed -i 's/^PROJECT_NAME *=.*$/PROJECT_NAME = "fbgl"/' Doxyfile
          sed -i 's/^PROJECT_NUMBER *=.*$/PROJECT_NUMBER = 0.1.0/' Doxyfile
          sed -i 's/^OUTPUT_DIRECTORY *=.*$/OUTPUT_DIRECTORY = docs/' Doxyfile
          sed -i 's/^INPUT *=.*$/INPUT = fbgl.h README.md/' Doxyfile
          sed -i 's/^HTML_OUTPUT *=.*$/HTML_OUTPUT = html/' Doxyfile
          sed -i 's/^USE_MDFILE_AS_MAINPAGE *=.*$/USE_MDFILE_AS_MAINPAGE = README.md/' Doxyfile
          
          # Configure Doxygen Awesome theme
          echo 'HTML_EXTRA_STYLESHEET = docs/theme/doxygen-awesome.css docs/theme/doxygen-awesome-dark-mode.css' >> Doxyfile
          echo 'HTML_HEADER = docs/theme/doxygen-awesome-darkmode-toggle.js' >> Doxyfile

      - name: Generate Documentation
        run: doxygen Doxyfile

      - name: Deploy to GitHub Pages
        uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_branch: gh-pages
          publish_dir: docs/html
          force_orphan: true