pelagia-portal/App/README.md
2026-05-18 23:18:58 +05:30

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# Pelagia Portal
An internal purchase order management system for a maritime vessel-operations company. Digitises the full PO lifecycle — from crew requisition through manager approval, vendor validation, accounts payment, and receipt confirmation — replacing ad-hoc email chains and spreadsheets with a single auditable workflow.
## Tech Stack
| Layer | Technology |
|---|---|
| Framework | Next.js 15 (App Router) |
| Language | TypeScript 5 (strict) |
| Database | PostgreSQL 16 via Prisma 5 |
| Auth | NextAuth.js v5 (credentials) |
| Styling | Tailwind CSS v4 + shadcn/ui |
| File Storage | Cloudflare R2 (production) / local filesystem (development) |
| Email | Resend (production) / console log (development) |
---
## Prerequisites
| Tool | Required Version |
|---|---|
| Node.js | >= 20.11.0 LTS |
| pnpm | >= 9.0.0 |
| PostgreSQL | >= 16 (local or Docker) |
Install pnpm if you don't have it:
```bash
npm install -g pnpm
```
---
## Development Setup
In development mode the app requires **only a database and auth secret** — Cloudflare R2 and Resend are not needed. File uploads are saved to `.dev-uploads/` on your local machine, and emails are printed to the terminal instead of being sent.
### 1. Install dependencies
```bash
pnpm install
```
### 2. Configure environment
Copy the example file and fill in the two required values:
```bash
cp .env.example .env.local
```
Minimum `.env.local` for development:
```env
NEXTAUTH_SECRET=<generate with: openssl rand -base64 32>
NEXTAUTH_URL=http://localhost:3000
DATABASE_URL="postgresql://postgres:postgres@localhost:5432/pelagia_portal"
```
The R2 and Resend variables are not needed in development and can be left as placeholders.
### 3. Set up the database
Create the database (if it doesn't exist yet), run migrations, and seed sample data:
```bash
pnpm db:migrate # runs prisma migrate dev
pnpm db:seed # seeds vessels, accounts, vendors, and demo users
```
To inspect the database with a GUI:
```bash
pnpm db:studio # opens Prisma Studio at http://localhost:5555
```
### 4. Start the dev server
```bash
pnpm dev
```
The app will be available at [http://localhost:3000](http://localhost:3000).
**Email behaviour in dev:** all notification emails are logged to the terminal in place of actual delivery. Look for lines starting with `📧 [DEV EMAIL]`.
**File upload behaviour in dev:** uploaded files are written to `.dev-uploads/` at the project root. This directory is git-ignored.
---
## Serving in Production
Production requires all environment variables to be set, including Cloudflare R2 credentials and a Resend API key.
### 1. Configure environment
Set the following variables in your hosting platform (Vercel, etc.) or in `.env.local` for a self-hosted deploy:
```env
# Auth
NEXTAUTH_SECRET=<strong random secret>
NEXTAUTH_URL=https://your-domain.com
# Database
DATABASE_URL=postgresql://<user>:<password>@<host>:<port>/<db>
# Cloudflare R2
R2_ACCOUNT_ID=<your cloudflare account id>
R2_ACCESS_KEY_ID=<r2 access key>
R2_SECRET_ACCESS_KEY=<r2 secret key>
R2_BUCKET_NAME=pelagia-portal
R2_PUBLIC_URL=https://<bucket>.<account>.r2.cloudflarestorage.com
# Email
RESEND_API_KEY=re_<your key>
EMAIL_FROM=noreply@yourdomain.com
EMAIL_FROM_NAME="Pelagia Portal"
```
### 2. Run database migrations
```bash
pnpm db:migrate:deploy # runs prisma migrate deploy (safe for production)
```
### 3. Build and start
```bash
pnpm build
pnpm start
```
The app listens on port 3000 by default. Point your reverse proxy (nginx, Caddy, etc.) or hosting platform to that port.
---
## Database Management
| Command | Purpose |
|---|---|
| `pnpm db:migrate` | Create and run a new migration (dev only) |
| `pnpm db:migrate:deploy` | Apply pending migrations without prompting (CI/production) |
| `pnpm db:push` | Push schema changes without a migration file (prototyping only) |
| `pnpm db:seed` | Seed sample data |
| `pnpm db:studio` | Open Prisma Studio GUI |
| `pnpm db:reset` | Drop and recreate the database, then re-seed (dev only) |
---
## Testing
```bash
pnpm test # unit + integration tests (Vitest)
pnpm test:watch # watch mode
pnpm test:e2e # end-to-end tests (Playwright)
pnpm test:e2e:ui # Playwright with interactive UI
```
---
## Other Scripts
```bash
pnpm lint # ESLint
pnpm type-check # tsc --noEmit
pnpm email:preview # live-preview email templates at http://localhost:3001
```
---
## Project Structure
```
pelagia-portal/
├── app/ # Next.js App Router pages and API routes
│ ├── (auth)/ # Login
│ ├── (portal)/ # Authenticated shell (sidebar + header)
│ │ ├── dashboard/
│ │ ├── po/ # PO creation, detail, edit
│ │ ├── approvals/ # Manager approval queue
│ │ ├── payments/ # Accounts payment queue
│ │ ├── history/ # Audit trail
│ │ └── admin/ # User, vessel, account, vendor management
│ └── api/
│ ├── auth/ # NextAuth endpoints
│ ├── files/sign/ # Generate presigned upload URL (production)
│ ├── files/dev/ # Local file upload/download handler (dev only)
│ └── reports/export/ # CSV / PDF export
├── components/ # Shared UI components (shadcn/ui + custom)
├── lib/ # Business logic
│ ├── po-state-machine.ts # All PO state transitions enforced here
│ ├── permissions.ts # Role → allowed-action map
│ ├── notifier.ts # Email dispatch (Resend in prod, console in dev)
│ ├── storage.ts # File storage (R2 in prod, local in dev)
│ └── validations/ # Zod schemas
├── emails/ # React Email templates
├── prisma/ # Schema and migrations
└── tests/ # Vitest unit/integration + Playwright E2E
```
---
## Roles
| Role | Description |
|---|---|
| Technical | Deck/engine crew — create and submit POs, confirm receipt |
| Manning | Crew-management staff — same as Technical |
| Manager | Review, approve, reject, request edits |
| Accounts | Process payment for approved POs |
| SuperUser | Combined Technical + Manning + Manager authority |
| Auditor | Read-only access to all records and reports |
| Admin | Manage users, vessels, accounts, and vendors |
User accounts are provisioned by an Admin; there is no self-registration.