# 💩📈

A better web UI for COVID wastewater data

💩📈 is a simple web server that periodically downloads a data
PDF from the Massachusetts Water Resources Authority, parses it to
extract the data, and serves the data as CSV and JSON along with
a simple Chart.js-based web frontend.

## Environment variables

- `CACHED_PDF_PATH`: file path to save the PDF to. Default: `./data.pdf`.
- `STATIC_DIR`: directory containing static files to serve. Default: `./static/`.

## Running

### Nix Flakes

```
nix run git+https://git.xeno.science/xenofem/poop-graph?ref=main
```

(The Nix package is wrapped with `STATIC_DIR` set automatically to the
correct Nix store path, so it'll serve the static files properly
no matter what directory you run it from.)

### Non-Nix

```
git clone https://git.xeno.science/xenofem/poop-graph
cd poop-graph
cargo run
```

## Other setup

- 💩📈 serves HTTP on `127.0.0.1:8080`, and is meant to be used behind
  a reverse proxy (e.g. Nginx), ideally with SSL certificates
  (e.g. Let's Encrypt). If you prefer, you could also use that web
  server to serve the static files, and only pass requests for
  `/data.csv` and `/data.json` to 💩📈.
- You'll probably want to set up a service (systemd or whatever your
  OS uses) to start 💩📈 automatically with environment
  variables set appropriately.