name: epub

on:
  push:
    branches:
      - epub
  workflow_dispatch:

permissions:
  contents: read

jobs:
  build:
    name: Build EPUB and PDF
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Cache cargo
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
          key: ${{ runner.os }}-cargo-mdbook-pandoc-v1
          restore-keys: |
            ${{ runner.os }}-cargo-mdbook-pandoc-

      - name: Install mdbook
        uses: peaceiris/actions-mdbook@v2
        with:
          mdbook-version: "latest"

      - name: Install FUSE (required for AppImages)
        run: |
          sudo apt-get update
          sudo apt-get install -y libfuse2

      - name: Install Tectonic
        uses: wtfjoke/setup-tectonic@v1
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Install Pandoc, LaTeX and fonts
        run: |
          sudo apt-get install -y pandoc texlive-xetex texlive-luatex texlive-lang-japanese fonts-noto-cjk fonts-noto-cjk-extra fonts-noto-color-emoji fonts-dejavu

      - name: Install mdbook-pandoc
        run: |
          if ! command -v mdbook-pandoc &> /dev/null; then
            cargo install mdbook-pandoc
          else
            echo "mdbook-pandoc already installed"
          fi

      - name: Build Book
        run: mdbook build

      - name: List Output Directory
        if: always()
        run: find book -maxdepth 4

      - name: Upload EPUB
        if: success()
        uses: actions/upload-artifact@v4
        with:
          name: rust-course-epub
          path: book/pandoc/epub/rust-course.epub

      - name: Upload PDF
        if: success()
        uses: actions/upload-artifact@v4
        with:
          name: rust-course-pdf
          path: book/pandoc/pdf/rust-course.pdf