Initial

Author: jalakoo

.gitignore

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+# Mac OS
+.DS_Store
+
+# 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:
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+# Sphinx documentation
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+# PyBuilder
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+# Jupyter Notebook
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+
+# 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.
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+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
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+#Pipfile.lock
+
+# poetry
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+#   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
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+
+# 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/

README.md

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+# Neo4j LangChain Starter Kit
+
+## Usage
+```
+poetry install
+poetry run uvicorn langchain_starter_kit.main:app --reload
+```
+
+Default local address will be: http://127.0.0.1:8000
+
+To change port, append above with `--port=<port>`
+
+## Docs
+FastAPI will automatically generate a swagger doc interface at a `/docs#` path from above

langchain_starter_kit/__init__.py

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+from __future__ import annotations
+from typing import Union
+from fastapi import FastAPI
+from .models import ApiChatPostRequest, ApiChatPostResponse
+
+app = FastAPI(
+    title='Chat API',
+    description='API for sending and receiving chat messages',
+    version='0.1.0',
+    servers=[{'url': 'http://localhost:3000'}],
+)
+
+@app.post(
+    '/api/chat',
+    response_model=None,
+    responses={'201': {'model': ApiChatPostResponse}},
+    tags=['chat'],
+)
+def send_chat_message(body: ApiChatPostRequest) -> Union[None, ApiChatPostResponse]:
+    """
+    Send a chat message
+    """
+
+    # Echo placeholder
+
+    # TODO: Replace to call with underlying LLM using target framework
+    return ApiChatPostResponse(message=body.message)

langchain_starter_kit/main.py

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+from __future__ import annotations
+from typing import Optional
+from pydantic import BaseModel, Field
+
+
+class ApiChatPostRequest(BaseModel):
+    message: str = Field(..., description='The chat message to send')
+
+
+class ApiChatPostResponse(BaseModel):
+    message: Optional[str] = Field(None, description='The chat message response')