name: Build LaTeX Document

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

env:
  TEX_NAME: Tesi.tex
  PDF_NAME: Tesi.pdf

jobs:
  build_latex:
    runs-on: ubuntu-latest
    steps:
      - name: Set up Git repository
        uses: actions/checkout@v4.2.2

      - name: Install MiKTeX
        run: |
          curl -fsSL https://miktex.org/download/key | tee /usr/share/keyrings/miktex-keyring.asc > /dev/null
          echo "deb [signed-by=/usr/share/keyrings/miktex-keyring.asc] https://miktex.org/download/ubuntu jammy universe" | sudo tee /etc/apt/sources.list.d/miktex.list
          apt-get update
          apt-get install miktex -y
          miktexsetup --shared=yes finish

      - name: Update MiKTeX package database
        run: miktex packages update-package-database && miktex packages update

      - name: Enable automatic package installation
        run: initexmf --set-config-value=[MPM]AutoInstall=yes

      - name: Build LaTeX document
        run: |
          pdflatex -interaction=nonstopmode -halt-on-error ${{ env.TEX_NAME }} || (cat /root/.miktex/texmfs/data/miktex/log/pdflatex.log && exit 1)

      - name: Check for PDF artifact
        run: file ${{ env.PDF_NAME }} || grep -q ' PDF '

      - name: Delete latest release attachment for Tesi.pdf
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        run: |
          latest_release_id=$(curl -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" https://gitea.kobim.cloud/api/v1/repos/${{ github.repository }}/releases/tags/latest | jq -r '.id')
          assets=$(curl -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" https://gitea.kobim.cloud/api/v1/repos/${{ github.repository }}/releases/$latest_release_id/assets | jq -r '.[] | select(.name == "'${{ env.PDF_NAME }}'") | .id')
          for asset_id in $assets; do
            curl -X DELETE -H "Authorization: token ${{ secrets.RELEASE_TOKEN }}" https://gitea.kobim.cloud/api/v1/repos/${{ github.repository }}/releases/assets/$asset_id
          done

      - name: Release PDF artifact
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        uses: softprops/action-gh-release@v2
        with:
          files: ${{ env.PDF_NAME }}
          tag_name: latest
          body: |
            PDF document built from latest LaTeX source.
          token: ${{ secrets.RELEASE_TOKEN }}