This FastAPI service renders cumulative CNB Star/Fork histories as SVG or PNG charts.

All data is pulled from the official CNB API:
https://api.cnb.cool/{repo}/-/{resource}?filter_type=all
where {resource} is either stars or forks.

Variable	Purpose
CNB_API_TOKEN	Bearer token for the CNB API
CNB_API_BASE_URL (optional)	Override the API host (defaults to https://api.cnb.cool)
REDIS_URL (optional)	Enables Redis-backed caching; falls back to in-memory cache
CACHE_TTL_SECONDS (optional)	Cache time-to-live in seconds (default 86400)

You can place these in a .env file— the app loads it automatically via python-dotenv.

pip install -r requirements.txt
python main.py  # reload enabled by default

Set UVICORN_RELOAD=0 to disable hot reload.

Endpoints:

• /stars/{repo} → star history chart; pass multiple repos (up to 6) separated by commas to render a comparison (e.g. /stars/cnb/feedback,cnb/cool/git-clone-yyds).
• /forks/{repo} → fork history chart
• /issues/{repo} → issue history chart
• /healthz → health check

Each supports query options:

• image_format=svg|png
• theme=light|dark (default light)
• accumulation=cumulative|net (default cumulative); net plots the monthly growth instead of the running total
• Issues endpoint also accepts state=open, state=closed, state=open,closed (default all), state=both (renders open & closed lines together), and authors=user1,user2

docker build -t commitcool .
docker run --env-file .env -p 8000:8000 commitcool

Then call http://localhost:8000/stars/cnb/feedback.