# RhemaWave

A Go-based fullscreen SDL2/OpenGL application for Linux kiosk systems. Displays proclamations with audio playback and animated visual patterns.

## Development

Development uses Nix for a reproducible build environment.

```bash
nix develop                                # enter dev shell
go build -o bin/rhemawave rhemawave.go     # build
./bin/rhemawave                            # run
./dev_scripts/reset.sh                     # reset database (if needed)
```

### Prerequisites

- Nix with flakes enabled
- A display server (X11/Wayland) and audio device for running the application

## Architecture

- **Page-based UI** — SDL2/OpenGL 3.3 fullscreen rendering with a page stack for navigation
- **Proclamation player** — scrolling text display with synchronized audio playback
- **Startup validation** — WiFi, TOS acceptance, email, license key checks
- **Singleton managers** — ShaderManager, FontManager, Logger (initialized once via `sync.Once`)

### Key Directories

```
bin/                          # build output (gitignored)
share/rhemawave/              # assets (fonts, shaders, proclamations, TOS)
internal/                     # Go source packages
packaging/                    # deployment configs (kiosk, updater, polkit)
dev_scripts/                  # developer utilities
```

### Runtime Data

Stored in `~/.local/share/rhemawave/`:
- `data.db` — SQLite database (config, proclamations, logs)
- `log.txt` — application log
- `license_key` — license key file

## Deployment

Deployed to kiosk hardware via NixOS-Anywhere. See `packaging/` for kiosk system configs.