# Analytics graphs

A small Rust web server that forwards SQL queries to `AnalyticsService.ExecuteAnalyticsQuery`
and displays the streamed result with ECharts.

## Run

Start the main komp_ac gRPC server, then run:

```sh
cargo run
```

Open <http://127.0.0.1:3000>. The default gRPC endpoint is
`http://[::1]:50051`. Both addresses can be changed:

```sh
ANALYTICS_GRPC_ENDPOINT=http://127.0.0.1:50051 \
LISTEN_ADDRESS=127.0.0.1:8080 \
cargo run
```

The first SQL result column is used for category labels. Bar and line charts use
all remaining columns as numeric series, pie uses the second column, and scatter
uses the first two columns. Table view displays every returned value.

ECharts is loaded from jsDelivr, so the browser needs network access when opening
the page.