Initial commit (WIP)

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+## By rbehzadan@gmail.com
+.archive/
+samples/
+*_[0-9]
+*_[0-9][0-9]
+*_????-??-??
+*.zip
+*.db
+*.exp.py

Dockerfile

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+FROM archlinux:base
+
+RUN pacman -Sy --noconfirm curl reflector && \
+    reflector --latest 5 --sort rate --save /etc/pacman.d/mirrorlist
+RUN sed -i '/\[options\]/a XferCommand = /usr/bin/curl -C - --fail --retry 3 --retry-delay 3 -o %o %u' /etc/pacman.conf
+RUN pacman -Syu --noconfirm --needed texlive-basic texlive-bibtexextra texlive-bin texlive-fontsextra texlive-fontsrecommended texlive-formatsextra texlive-games texlive-humanities texlive-langgerman texlive-latex texlive-latexextra texlive-latexrecommended texlive-mathscience texlive-music texlive-pictures texlive-plaingeneric texlive-pstricks texlive-publishers
+RUN pacman -Syu --noconfirm --needed python-fastapi uvicorn python-python-multipart
+RUN yes | pacman -Scc
+
+WORKDIR /app
+COPY main.py .
+
+ENTRYPOINT ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]

main.py

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+import asyncio
+from fastapi import FastAPI, File, UploadFile
+from fastapi.responses import StreamingResponse
+from io import BytesIO
+
+app = FastAPI()
+
+@app.post("/tex2pdf")
+async def convert_to_pdf(file: UploadFile = File(...)):
+    input_file = BytesIO(await file.read())
+
+    process = await asyncio.create_subprocess_exec(
+        'pdflatex', '-f', 'pdf',
+        stdin=asyncio.subprocess.PIPE,
+        stdout=asyncio.subprocess.PIPE,
+        stderr=asyncio.subprocess.PIPE
+    )
+
+    output_pdf, error = await process.communicate(input=input_file.getvalue())
+
+    if process.returncode == 0:
+        return StreamingResponse(BytesIO(output_pdf), media_type='application/pdf')
+    else:
+        return {"error": "Conversion failed.", "details": error.decode()}
+