# Phase 2.7 / Phase 3 — Repository Layer & Feature Modules — COMPLETE ✅

**Date**: March 10, 2026  
**Result**: `npx tsc --noEmit` → Exit Code 0 (zero errors)

---

## Phase 2.7 — Repository Layer (Data Access Layer)

### What was built

6 repository files + 1 barrel export under `src/server/db/repositories/`:

| File | Model(s) | Key Operations |
|---|---|---|
| `pppoe.repository.ts` | `pppoeUser` | findById, findByUsername, findByPhone, findPaginated, findExpired, count, create, update, updateStatus, delete |
| `invoice.repository.ts` | `invoice` | findById, findByInvoiceNumber, findByPaymentToken, findByUser, findPaginated, findPending, findOverdue, count, create, update, markPaid |
| `payment.repository.ts` | `payment` | findById, findByInvoice, findRecent, create, sumByGateway, totalRevenue |
| `hotspot.repository.ts` | `hotspotVoucher`, `hotspotProfile` | findProfileById, findActiveProfiles, findVoucherById, findVoucherByCode, findVouchersByBatch, findPaginatedVouchers, updateVoucher, deleteVoucher, countByStatus |
| `agent.repository.ts` | `agent`, `agentSale`, `agentDeposit` | findById, findByPhone, findAll, findActive, create, update, adjustBalance, delete, findDeposits, createDeposit, findSales |
| `company.repository.ts` | `company` | getFirst, findById, update, upsert |
| `index.ts` | — | Barrel export for all repositories |

### Usage Pattern

```ts
// Import from barrel — never import individual files
import { pppoeRepository, invoiceRepository } from '@/server/db/repositories'

// In a service or API route
const users = await pppoeRepository.findPaginated({ page: 1, limit: 20, status: 'active' })
const invoice = await invoiceRepository.findById(id, { user: true, payments: true })
```

---

## Phase 3 — Feature Modules

### What was built

Feature vertical slices under `src/features/` — each feature contains domain types, Zod schemas, and query helpers.

Dependencies added:
- **`zod@^4.3.6`** — schema validation (added to production dependencies)

---

### Feature Structure

```
src/features/
├── pppoe/
│   ├── types.ts        — PppoeUser, PppoeProfile, PppoeStats, PppoeUserListItem
│   ├── schemas.ts      — createPppoeUserSchema, updatePppoeUserSchema, pppoeUserListQuerySchema
│   └── queries.ts      — getPppoeUsers(), getPppoeUser(), getPppoeStats()
├── hotspot/
│   ├── types.ts        — HotspotVoucher, HotspotProfile, VoucherStats, BatchInfo
│   ├── schemas.ts      — generateVoucherSchema, hotspotProfileSchema, voucherListQuerySchema
│   └── queries.ts      — getVouchers(), getVoucherStats(), getActiveProfiles()
├── billing/
│   ├── types.ts        — Invoice, Payment, InvoiceStats, RevenueSummary
│   ├── schemas.ts      — createInvoiceSchema, invoiceListQuerySchema, manualPaymentSchema
│   └── queries.ts      — getInvoices(), getInvoice(), getRecentPayments(), getInvoiceStats()
├── network/
│   ├── types.ts        — Router, VpnServer, VpnClient, NetworkTopology
│   └── schemas.ts      — routerSchema, vpnServerSchema
├── notifications/
│   ├── types.ts        — Notification, NotificationChannel, BroadcastTarget
│   └── schemas.ts      — sendWhatsAppSchema, sendBroadcastSchema, sendEmailSchema
├── agents/
│   ├── types.ts        — Agent, AgentDeposit, AgentSale, AgentStats
│   └── schemas.ts      — createAgentSchema, updateAgentSchema, agentDepositSchema
└── reports/
    └── queries.ts      — getMonthlyRevenue(), getUserGrowth(), getTopAgents(), getInvoiceSummary()
```

---

### Shared Component Structure (3.9)

New directories created under `src/components/`:

```
src/components/
├── data-display/
│   └── index.ts        — re-exports all chart components
├── feedback/
│   └── index.ts        — stub for loading/empty state components
├── layout/
│   └── index.ts        — stub for shared layout primitives
└── (existing)
    ├── ui/             — shadcn/ui components (unchanged)
    ├── charts/         — chart components (unchanged)
    ├── cyberpunk/      — cyberpunk theme (unchanged)
    └── ...
```

---

### Shared Validators (src/lib/validators)

```
src/lib/validators/
└── index.ts            — idSchema, phoneSchema, emailSchema, passwordSchema,
                          paginationSchema, searchQuerySchema, dateRangeSchema,
                          emptyStringToUndefined helper
```

---

### How to use in API Routes

```ts
// Route handler example — clean and thin
import { pppoeUserListQuerySchema } from '@/features/pppoe/schemas'
import { getPppoeUsers } from '@/features/pppoe/queries'

export async function GET(req: NextRequest) {
  const params = pppoeUserListQuerySchema.parse(
    Object.fromEntries(new URL(req.url).searchParams)
  )
  const result = await getPppoeUsers(params)
  return NextResponse.json({ data: result })
}
```

---

## Validation

```
npx tsc --noEmit
# Exit Code: 0 — No TypeScript errors
```

---

## Next: Phase 4 — API Route Thinning

Target: Strip business logic from route handlers. Each handler should be ≤20 lines: parse → validate → call service → respond.

See [ROADMAP_RESTRUCTURING.md](../ROADMAP_RESTRUCTURING.md) for the full plan.