# Architecture

**Sistem Desa Mandiri** is a village administration platform built on Next.js 14 (App Router) with PostgreSQL.

## Key Layers

- **`src/app/(application)/`** — Auth-protected pages grouped by feature (announcement, division, project, discussion, member, profile, home, group)
- **`src/app/(auth)/`** — Login/register pages
- **`src/app/api/`** — REST API endpoints; subdirectories map to resource types (`/api/announcement`, `/api/project`, `/api/task`, etc.). Mobile-specific endpoints live under `/api/mobile/`
- **`src/module/`** — Business logic modules, one per feature (19 modules). Each module contains hooks, components, and API call functions for that domain
- **`src/lib/`** — Shared utilities: Prisma client singleton (`prisma.ts`), Firebase init, route definitions (`routes.ts`), push notification hooks

## Data Access

All DB access goes through the Prisma client singleton in `src/lib/prisma.ts`. Schema at `prisma/schema.prisma` (40+ models). Migrations in `prisma/migrations/`.

## State Management

- **Hookstate** (`@hookstate/core` + `@hookstate/localstored`) — client-side global state with localStorage persistence
- **Iron-session** — server-side session management / auth
- **Jose** — JWT handling

## UI Stack

- **Mantine 7** — primary UI library (components, forms, modals, notifications, charts, dates)
- **Tailwind CSS** — utility classes, used alongside Mantine
- **PostCSS** — configured with Mantine preset (`postcss.config.mjs`)

## Real-time & Notifications

- **Firebase FCM** (`src/lib/firebase/`) — mobile push notifications
- **Web Push + VAPID keys** (`src/lib/usePushNotifications.ts`) — browser push
- **wibu-realtime** (custom library) — WebSocket-based real-time updates

## User Roles

Five roles with distinct access levels (see `PANDUAN PENGGUNAAN.md`):

1. **Super Admin** — full system access
2. **Admin Desa** — village-level administration
3. **Ketua Divisi** — division leader
4. **Anggota Divisi** — division member
5. **Warga/Perangkat Desa** — village resident/official