# Tenebrous Sheets

An open source character sheet service for tabletop roleplaying games.

Currently under heavy development.

## The Stack

This project makes use of these technologies:

- Rust
- Rocket Web Framework
- Tonic gRPC Framework
- Typescript

Building is backed by: cargo, npm, and webpack.

## Build Instructions

These are very basic build instructions. They assume you already have
cargo set up and installed.

### Initial Setup

Quick initial setup instructions that will set up a development
environment.

First, install dependencies by either using the command below (Void
Linux), or reading the "Dependencies Required" section:

```
xbps-install sqlite sqlite-devel protobuf nodejs docker
```

Then run the required `cargo` commands to install management tools and
create a development database:

```

cargo install --version=0.2.0 sqlx-cli
cargo install cargo-run-script
cargo run --bin tenebrous-migrate
```

### Dependencies Required

Dependencies required to build the project. The exact installation
method depends on your OS.

 * sqlite3 and development headers (Void Linux: `xbps-install
   sqlite sqlite-devel`, Ubuntu: `apt install sqlite3 libsqlite3-dev`).
 * protoc: protocol buffers compiler. Needed to compile protobuf files
   for both the server and web frontends (Void Linux: `xbps-install
   protobuf`).
 * Node and npm: Needed to run webpack for compiling and injecting
   Typescript into various web pages (Void Linux: `xbps-install
   nodejs`).
 * Docker: Needed to run the grpc proxy (Void Linux `xbps-install
   docker`).

### Run Application

Command line "instructions" to build and run the application:

```
cargo run-script grpc-proxy # only required if proxy not already running
cargo run
```

The sqlite database is created in the directory `cargo run` was
invoked from by default. You can also pass a path to a different
location as a single argument to the program.

## Development

Development instructions.

To set up a local database, or run migrations, run:

```
cargo run --bin tenebrous-migrate
```

### Database Queries and Migrations

When adding/updating a compile-checked query or a migration, you need
to update the SQLx data JSON file:

```
cargo sqlx prepare -- --bin tenebrous
```

### gRPC-Web Proxy

The frontend web application makes use of the gRPC-Web protocol to
call gPRC endpoints from the browser. This requires a proxy to
translate the calls from the browser to HTTP2 calls gRPC understands.
For development, executing the `cargo run-script grpc-proxy` command
will start the envoy proxy recommended by Google's gRPC-Web project.

The envoy configuration assumes you are on Linux. If you are using Mac
OS or Windows, see the note in the envoy configuration.

[rustup]: https://rust-lang.github.io/rustup/index.html