# Technical Requirement Document (TRD)

> Project Name: [Your Project Name]  
> Author(s): [Team Member Names]  
> Date: [YYYY-MM-DD]  
> Version: 1.0  

---

## System Architecture Overview
*High-level diagram or description of how components connect.*

```
[Frontend] <-> [Backend API] <-> [Database]
     |
[External Services: e.g., Auth, Storage, APIs]
```

*Or describe in words if diagram isn't ready yet.*

---

## Tech Stack

| Layer | Technology | Why Chosen? |
|-------|-----------|-------------|
| **Frontend** | [e.g., React, Vue, Vanilla JS] | [Reason] |
| **Backend** | [e.g., Node.js, Python Flask, Go] | [Reason] |
| **Database** | [e.g., PostgreSQL, MongoDB, SQLite] | [Reason] |
| **Authentication** | [e.g., JWT, OAuth, Firebase Auth] | [Reason] |
| **Hosting** | [e.g., Vercel, Railway, Localhost] | [Reason] |
| **Version Control** | Git + GitHub | Collaboration and tracking |

---

## Data Model / Schema
*Describe your main data entities and relationships.*

### Example: `User` Entity
```json
{
  "id": "uuid",
  "email": "string, unique",
  "username": "string",
  "created_at": "timestamp"
}
```

### Example: `Task` Entity
```json
{
  "id": "uuid",
  "user_id": "foreign_key -> User.id",
  "title": "string",
  "description": "text, optional",
  "due_date": "date",
  "status": "enum: [todo, in-progress, done]",
  "priority": "enum: [low, medium, high]"
}
```

*(Add ER diagram link or description if helpful)*

---

## API Endpoints (If Applicable)
*List key routes your backend will expose.*

| Method | Endpoint | Description | Auth Required? |
|--------|----------|-------------|----------------|
| `POST` | `/api/auth/login` | User login | No |
| `GET` | `/api/tasks` | Fetch user's tasks | Yes |
| `POST` | `/api/tasks` | Create new task | Yes |
| `PUT` | `/api/tasks/:id` | Update task | Yes |
| `DELETE` | `/api/tasks/:id` | Delete task | Yes |

---

## Testing and Verification Strategy
*How will you ensure quality?*

- **Unit Testing:** [e.g., Jest for JS functions, pytest for Python]
- **Integration Testing:** [e.g., Test API endpoints with Supertest]
- **Manual Testing Checklist:**
  - [ ] User can register and login
  - [ ] Task CRUD operations work
  - [ ] Form validation shows errors correctly
- **Error Handling:** [How will you log and display errors?]

---

## Security and Privacy Considerations
- [ ] Passwords hashed (e.g., bcrypt)
- [ ] Input validation on all user inputs
- [ ] HTTPS in production
- [ ] No sensitive data in client-side code
- [ ] Rate limiting on auth endpoints (if applicable)

---

## Dependencies and Setup
*Commands to get the project running locally.*

```bash
# Clone repo
git clone [repo-url]

# Install dependencies
npm install  # or pip install -r requirements.txt

# Environment variables setup
cp .env.example .env
# Edit .env with your values

# Run locally
npm run dev  # or python app.py
```

---

> Tips for Writing TRD
> - Choose tools your team knows (or wants to learn simply)
> - Document decisions: "Why PostgreSQL over MongoDB?"
> - Keep setup instructions copy-paste friendly
> - Assume the reader has never seen your code before

---

> **Endpoint:** `/formats/trd-template`
> [formats](/formats) > [trd-template](/formats/trd-template)
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