# **Aglimate - Frontend Product Requirements Document (PRD)**

**Version**: 1.0  
**Last Updated**: June 20, 2026  
**Author**: Oluchukwu Prosper  
**Backend Developer**: Oluchukwu Prosper  

---

## **📋 Document Overview**

This document outlines the requirements for building the **frontend interface** for Aglimate, a Farmer-First Climate-Resilient Advisory Agent for Nigerian smallholder farmers. The backend is already developed and deployed; this PRD specifies what the frontend must implement to provide a complete user experience.

---

## **🎯 Product Vision**

**Aglimate** empowers Nigerian smallholder farmers with AI-powered, multilingual agricultural advice accessible via simple, intuitive interfaces. The frontend must be **farmer-first** — designed for users who may have:
- Limited literacy
- Basic or feature phones
- Intermittent internet connectivity
- No prior experience with AI chatbots

---

## **👥 Target Users**

### **Primary Users (Priority 1)**
| User Type | Persona | Needs | Device | Language |
|-----------|---------|-------|--------|----------|
| Smallholder Farmer | Rural farmer, 35-65 years | Simple farming advice in local language | Basic phone / Smartphone | Hausa, Igbo, Yoruba, Pidgin |
| Subsistence Farmer | Woman farmer, manages small plot | Disease/pest identification, weather planning | Feature phone | Local language + voice |

### **Secondary Users (Priority 2)**
| User Type | Persona | Needs | Device | Language |
|-----------|---------|-------|--------|----------|
| Agricultural Extension Officer | Government/NGO worker | Field support, farmer education | Tablet / Smartphone | English + local |
| Agronomist | Professional advisor | Quick reference, multilingual support | Smartphone / Laptop | English + local |
| NGO Field Agent | Community worker | Data collection, farmer support | Smartphone | English + local |

---

## **🌐 Platform Requirements**

### **Required Platforms**

#### **Phase 1: Web Application (MVP)** ⭐⭐⭐
- **Type**: Responsive web app
- **Framework**: React.js or Vue.js (recommended)
- **Responsiveness**: Mobile-first, works on all screen sizes
- **Offline Support**: Service Worker for caching (PWA)
- **Browser Support**: Chrome, Firefox, Safari, Edge (latest 2 versions)

#### **Phase 2: Mobile App (Future)** ⭐⭐
- **Platforms**: Android (Kotlin/Java), iOS (Swift)
- **Approach**: React Native (cross-platform) or native
- **Offline Mode**: Full offline capability with sync when online
- **App Size**: <50MB (critical for African markets)

#### **Phase 3: USSD (Future)** ⭐
- **Access**: `*388*AGL#` or similar shortcode
- **Carriers**: MTN, Glo, Airtel, 9mobile Nigeria
- **Session**: Menu-based navigation
- **Cost**: Zero-rated or minimal SMS charges

#### **Phase 4: SMS (Future)** ⭐
- **Shortcode**: Dedicated number (e.g., 38838)
- **Format**: Text question → Receive answer via SMS
- **Languages**: All supported languages
- **Cost**: Premium SMS rate

---

## **⚡ Backend API Overview**

### **Base URL**
```
https://YOUR_DEPLOYMENT_URL/
```

### **Authentication**
- **No authentication required** for public endpoints
- **Rate Limiting**: 20 requests/minute for `/ask`, 10 requests/minute for `/advise`
- **CORS**: Enabled for all origins (`*`)

### **Core Endpoints**

| Endpoint | Method | Description | Response |
|----------|--------|-------------|----------|
| `/` | GET | Health check | System status |
| `/health` | GET | Detailed health check | Models, services status |
| `/ask` | POST | Text-based Q&A | Answer, language, confidence, intent |
| `/advise` | POST | Multimodal advisory (text + photo + GPS) | Answer, location data, model used |

### **Weather Endpoints**

| Endpoint | Method | Description | Parameters |
|----------|--------|-------------|------------|
| `/weather/current` | GET | Current weather | `q`, `state`, `lat`, `lon`, `aqi` |
| `/weather/forecast` | GET | Multi-day forecast | `q`, `state`, `lat`, `lon`, `days`, `aqi`, `alerts` |
| `/weather-alerts` | GET | Weather alerts only | `q`, `state`, `lat`, `lon` |
| `/weather/history` | GET | Historical weather | `q`, `state`, `lat`, `lon`, `dt`, `end_dt` |
| `/weather/marine` | GET | Marine weather | `q`, `lat`, `lon`, `days`, `tides` |
| `/weather/future` | GET | Future date weather | `q`, `state`, `lat`, `lon`, `dt` |
| `/weather/timezone` | GET | Timezone info | `q`, `state`, `lat`, `lon` |
| `/weather/search` | GET | Location search | `q` |
| `/weather/ip` | GET | IP-based location | `ip` |

---

## **📱 Frontend Features & Requirements**

---

## **🏗️ Feature 1: Core Chat Interface**

### **User Stories**
- As a farmer, I want to ask agricultural questions in my own language so I can get advice I understand
- As a farmer, I want to see my conversation history so I can continue previous discussions
- As a farmer, I want clear, actionable answers so I can make farming decisions

### **Requirements**

#### **1.1 Chat Input**
- [ ] **Text Input**: Multiline text area for farmer questions
- [ ] **Voice Input**: Microphone button for voice-to-text (Web Speech API)
- [ ] **Language Detection**: Auto-detect input language (Hausa, Igbo, Yoruba, English, etc.)
- [ ] **Language Switcher**: Manual language selection dropdown
- [ ] **Send Button**: Submit query
- [ ] **Enter Key**: Submit on Enter key

#### **1.2 Chat Display**
- [ ] **Message Bubbles**: Farmer questions (right) vs Aglimate answers (left)
- [ ] **Timestamp**: Show time for each message
- [ ] **Language Tag**: Display detected language for each message
- [ ] **Confidence Indicator**: Show confidence score (High/Medium/Low)
- [ ] **Typing Indicator**: Show "Aglimate is thinking..." during API calls
- [ ] **Error Messages**: Clear error display with retry option

#### **1.3 Session Management**
- [ ] **New Session**: Start fresh conversation
- [ ] **Session Persistence**: Auto-reconnect to previous session if exists
- [ ] **Session List**: View list of recent sessions
- [ ] **Session Deletion**: Delete old sessions
- [ ] **Session Export**: Save/Share conversation as text

### **API Integration**
```javascript
// Example: Send chat message
const response = await fetch('/ask', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    query: userMessage,
    session_id: currentSessionId
  })
});

// Response format
{
  "query": "What is the best time to plant maize?",
  "answer": "The best time to plant maize in Nigeria is...",
  "session_id": "abc-123",
  "detected_language": "English",
  "confidence": 0.92,
  "intent": "normal",
  "cached": false
}
```

### **UI Mockup**
```
+------------------------------------------+
|  [Aglimate]  [New Chat]  [⚙️ Settings]   |
+------------------------------------------+
|                                          |
|  +------------------+                   |
|  |  Farmer: What    |                   |
|  |  is the best    |                   |
|  |  time to plant  |                   |
|  |  maize?         |                   |
|  +------------------+                   |
|                                          |
|  +------------------+                   |
|  |  Aglimate: The   |                   |
|  |  best time is   |                   |
|  |  early May...    |                   |
|  |  [Confidence: 🟢] |                   |
|  +------------------+                   |
|                                          |
|  +------------------+                   |
|  |  🎤 [Type or speak your question]   |
|  +------------------+                   |
|                                          |
|  [📷]  [🎤]  [📤]                       |
+------------------------------------------+
```

---

## **🌿 Feature 2: Climate-Resilient Advisory (Multimodal)**

### **User Stories**
- As a farmer, I want to upload a photo of my sick crop so Aglimate can help identify the disease
- As a farmer, I want to share my GPS location so Aglimate can give weather-specific advice
- As a farmer, I want step-by-step guidance for my specific farming situation

### **Requirements**

#### **2.1 Photo Upload**
- [ ] **Camera Access**: Take photo directly from app
- [ ] **Gallery Access**: Upload from device storage
- [ ] **Image Preview**: Show selected image before sending
- [ ] **Image Validation**: Check file size (<5MB), format (JPG, PNG, WEBP)
- [ ] **Progress Indicator**: Show upload progress

#### **2.2 GPS/Location**
- [ ] **GPS Access**: Request location permission
- [ ] **Manual Input**: Allow manual lat/long entry
- [ ] **Location Search**: Search by city/state in Nigeria
- [ ] **Location Display**: Show selected location on map (optional)

#### **2.3 Multimodal Form**
- [ ] **Combined Input**: Text + Photo + Location in one form
- [ ] **Field Validation**: Ensure at least text is provided
- [ ] **Submit Button**: Send all data to `/advise` endpoint

### **API Integration**
```javascript
// Example: Send multimodal advisory request
const formData = new FormData();
formData.append('query', farmerDescription);
formData.append('session_id', currentSessionId);
if (latitude) formData.append('latitude', latitude);
if (longitude) formData.append('longitude', longitude);
if (photoFile) formData.append('photo', photoFile);

const response = await fetch('/advise', {
  method: 'POST',
  body: formData
});

// Response format
{
  "session_id": "abc-123",
  "answer": "Based on your photo and location...",
  "latitude": 6.5244,
  "longitude": 3.3792,
  "used_image": true,
  "used_video": false,
  "model_used": "Qwen/Qwen2-VL-2B-Instruct"
}
```

### **UI Mockup**
```
+------------------------------------------+
|  [← Back]  Climate Advisory              |
+------------------------------------------+
|                                          |
|  Describe your farming situation:        |
|  +------------------------------------+  |
|  |                                    |  |
|  |  My cassava plants have yellow     |  |
|  |  leaves...                         |  |
|  +------------------------------------+  |
|                                          |
|  +------------+                         |
|  |            |                         |
|  |   [📷]     |  Add photo of affected   |
|  |   Image    |  plants/soil             |
|  |            |                         |
|  +------------+                         |
|                                          |
|  +------------+                         |
|  | 📍 Use my  |  Or select location:     |
|  | location  |  [Dropdown ▼]             |
|  +------------+                         |
|                                          |
|  [Submit Advisory Request]              |
+------------------------------------------+
```

---

## **🌦️ Feature 3: Weather Dashboard**

### **User Stories**
- As a farmer, I want to see current weather for my location to plan farming activities
- As a farmer, I want to see weather forecasts to decide when to plant/harvest
- As a farmer, I want weather alerts to prepare for extreme conditions

### **Requirements**

#### **3.1 Current Weather**
- [ ] **Location Selection**: Auto-detect or manual entry
- [ ] **Weather Display**: Temperature, humidity, wind, precipitation
- [ ] **Condition Icon**: Visual weather representation
- [ ] **AQI Display**: Air quality index (optional)
- [ ] **Last Updated**: Timestamp of data

#### **3.2 Forecast**
- [ ] **Daily Forecast**: 3-14 day outlook
- [ ] **Hourly Forecast**: 24-hour detailed forecast
- [ ] **Chart Visualization**: Temperature/rainfall graphs
- [ ] **Farming Insights**: "Good day for planting", "Risk of heavy rain"

#### **3.3 Alerts**
- [ ] **Alert List**: Active weather warnings
- [ ] **Severity Levels**: Color-coded (Red=Critical, Orange=Warning, Yellow=Caution)
- [ ] **Push Notifications**: Alert notifications (if permissions granted)
- [ ] **Action Recommendations**: What farmers should do

### **API Integration**
```javascript
// Current weather
const response = await fetch('/weather/current?q=Lagos,Nigeria&aqi=yes');

// Forecast
const response = await fetch('/weather/forecast?q=Lagos&days=7&alerts=yes');

// Alerts only
const response = await fetch('/weather-alerts?q=Lagos');
```

### **UI Mockup**
```
+------------------------------------------+
|  [Weather]  [Forecast]  [Alerts]         |
+------------------------------------------+
|                                          |
|  📍 Lagos, Nigeria                       |
|  Updated: Just now                       |
|                                          |
|  +--------+----------------------------+  |
|  | ☀️     |  32°C      Sunny          |  |
|  |        |  Humidity: 65%            |  |
|  |        |  Wind: 12 km/h             |  |
|  +--------+----------------------------+  |
|                                          |
|  FORECAST                                 |
|  +----+----+----+----+----+             |
|  |Mon |Tue |Wed |Thu |Fri |             |
|  |☀️33|🌧️29|☁️31|☀️34|🌧️30|             |
|  +----+----+----+----+----+             |
|                                          |
|  ⚠️  ALERTS                               |
|  +------------------------------------+  |
|  | Heavy rain warning - Thu           |  |
|  | Protect crops, ensure drainage       |  |
|  +------------------------------------+  |
+------------------------------------------+
```

---

## **📊 Feature 4: Agricultural Knowledge Base**

### **User Stories**
- As a farmer, I want to browse agricultural topics to learn best practices
- As a farmer, I want to search for specific information (diseases, crops, techniques)
- As a farmer, I want to save helpful articles for offline reading

### **Requirements**

#### **4.1 Topic Browser**
- [ ] **Category Navigation**: Crops, Livestock, Soil, Weather, Pests/Diseases
- [ ] **Subcategories**: Maize, Cassava, Yam, etc.
- [ ] **Article Cards**: Title, excerpt, read time
- [ ] **Search Functionality**: Full-text search

#### **4.2 Article Viewer**
- [ ] **Rich Text Display**: Formatted articles with images
- [ ] **Language Toggle**: Switch between languages
- [ ] **Save for Offline**: Download articles for later reading
- [ ] **Share Article**: Share via WhatsApp, SMS, etc.

#### **4.3 RAG Integration**
- [ ] **Real-time Updates**: Show latest agricultural news
- [ ] **Source Attribution**: Show where information comes from
- [ ] **Date Display**: When article was published/updated

---

## **🎨 Feature 5: User Profile & Settings**

### **User Stories**
- As a user, I want to set my preferences (language, location) so the app works better for me
- As a user, I want to view my usage history to track my interactions
- As a user, I want to provide feedback to improve the service

### **Requirements**

#### **5.1 Profile Settings**
- [ ] **Language Preference**: Default language for responses
- [ ] **Default Location**: Home farm location
- [ ] **Notification Settings**: Enable/disable alerts
- [ ] **Theme**: Light/Dark mode, High contrast
- [ ] **Font Size**: Large text option

#### **5.2 Usage History**
- [ ] **Interaction Log**: List of all queries and responses
- [ ] **Filter by Date**: View history for specific time periods
- [ ] **Export History**: Download as CSV/text
- [ ] **Clear History**: Delete all saved data

#### **5.3 Feedback**
- [ ] **Rating System**: 1-5 stars for each response
- [ ] **Comment Box**: Text feedback on responses
- [ ] **Bug Report**: Submit error reports with screenshots
- [ ] **Feature Request**: Suggest new features

### **UI Mockup**
```
+------------------------------------------+
|  [← Back]  Settings                       |
+------------------------------------------+
|                                          |
|  PROFILE                                 |
|  +------------------------------------+  |
|  | Name: John Doe                    |  |
|  | Language: Igbo                   |  |
|  | Location: Enugu, Nigeria          |  |
|  +------------------------------------+  |
|                                          |
|  PREFERENCES                             |
|  +------------------------------------+  |
|  | [✓] Weather Alerts                |  |
|  | [✓] Large Text                    |  |
|  | [ ] Dark Mode                     |  |
|  +------------------------------------+  |
|                                          |
|  [Save Settings]                        |
|                                          |
|  [Rate This App]  [Give Feedback]        |
|                                          |
|  [Clear Cache]  [Clear History]         |
+------------------------------------------+
```

---

## **🎯 Feature 6: Farmer Resources**

### **User Stories**
- As a farmer, I want to find local agricultural extension officers to get professional help
- As a farmer, I want to access emergency contacts for urgent farming issues
- As a farmer, I want to see market prices for my crops

### **Requirements**

#### **6.1 Expert Directory**
- [ ] **Extension Officer List**: Searchable directory by location
- [ ] **Specialization Filter**: Crop specialists, livestock experts, etc.
- [ ] **Contact Information**: Phone, email, office location
- [ ] **Map View**: Visualize experts on map

#### **6.2 Emergency Contacts**
- [ ] **Hotline Numbers**: Agricultural emergency contacts
- [ ] **Disease Outbreak Reporting**: Direct reporting channels
- [ ] **Disaster Assistance**: Flood, drought, pest outbreak support

#### **6.3 Market Information**
- [ ] **Crop Price Tracker**: Current market prices
- [ ] **Price Trends**: Historical price charts
- [ ] **Market Locations**: Nearby markets with contact info

---

## **🔌 Technical Requirements**

### **Frontend Architecture**
```
┌─────────────────────────────────────────────────────┐
│                    Aglimate Frontend                     │
├─────────────────────────────────────────────────────┤
│                                                         │
│  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐ │
│  │   React/Vue   │  │    State     │  │   API       │ │
│  │   Components  │──▶│ Management  │──▶│   Service    │ │
│  └──────────────┘  └──────────────┘  └──────────────┘ │
│         │                  │                  │           │
│         ▼                  ▼                  ▼           │
│  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐ │
│  │    UI         │  │  Redux/       │  │   Fetch      │ │
│  │   Library     │  │  Pinia        │  │   Wrapper    │ │
│  └──────────────┘  └──────────────┘  └──────────────┘ │
│                                                         │
└─────────────────────────────────────────────────────┘
```

### **Folder Structure**
```
frontend/
├── public/
│   ├── index.html
│   ├── favicon.ico
│   └── manifest.json (PWA)
├── src/
│   ├── assets/
│   │   ├── images/
│   │   └── styles/
│   ├── components/
│   │   ├── Chat/
│   │   │   ├── ChatInput.jsx
│   │   │   ├── ChatMessage.jsx
│   │   │   └── ChatContainer.jsx
│   │   ├── Weather/
│   │   │   ├── WeatherCurrent.jsx
│   │   │   ├── WeatherForecast.jsx
│   │   │   └── WeatherAlerts.jsx
│   │   ├── Advisory/
│   │   │   └── MultimodalForm.jsx
│   │   ├── Common/
│   │   │   ├── LanguageSwitcher.jsx
│   │   │   ├── LoadingSpinner.jsx
│   │   │   └── ErrorBoundary.jsx
│   │   └── Layout/
│   │       ├── Header.jsx
│   │       ├── Footer.jsx
│   │       └── Navbar.jsx
│   ├── pages/
│   │   ├── Home.jsx
│   │   ├── Chat.jsx
│   │   ├── Advisory.jsx
│   │   ├── Weather.jsx
│   │   ├── KnowledgeBase.jsx
│   │   ├── Settings.jsx
│   │   └── Resources.jsx
│   ├── services/
│   │   ├── api.js (API client)
│   │   ├── auth.js
│   │   ├── cache.js
│   │   └── weather.js
│   ├── store/
│   │   ├── index.js
│   │   ├── slices/
│   │   │   ├── chatSlice.js
│   │   │   ├── weatherSlice.js
│   │   │   └── userSlice.js
│   │   └── hooks.js
│   ├── hooks/
│   │   ├── useChat.js
│   │   ├── useWeather.js
│   │   └── useResponsive.js
│   ├── utils/
│   │   ├── helpers.js
│   │   ├── validation.js
│   │   └── constants.js
│   ├── App.jsx
│   ├── main.jsx
│   └── index.css
├── .env
├── package.json
└── README.md
```

### **State Management**
```javascript
// Example Redux slice for chat
const chatSlice = createSlice({
  name: 'chat',
  initialState: {
    sessions: [],
    currentSession: null,
    messages: [],
    loading: false,
    error: null
  },
  reducers: {
    addMessage: (state, action) => {},
    setLoading: (state, action) => {},
    setError: (state, action) => {},
    clearSession: (state, action) => {}
  }
});
```

### **API Service Layer**
```javascript
// services/api.js
class AglimateAPI {
  static async ask(query, sessionId = null) {
    const response = await fetch('/ask', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ query, session_id: sessionId })
    });
    return response.json();
  }
  
  static async advise(data) {
    const formData = new FormData();
    Object.entries(data).forEach(([key, value]) => {
      if (value !== null && value !== undefined) {
        formData.append(key, value);
      }
    });
    
    const response = await fetch('/advise', {
      method: 'POST',
      body: formData
    });
    return response.json();
  }
  
  static async getWeatherCurrent(params) {
    const query = new URLSearchParams(params);
    const response = await fetch(`/weather/current?${query}`);
    return response.json();
  }
  
  static async healthCheck() {
    const response = await fetch('/health');
    return response.json();
  }
}
```

---

## **📱 Responsive Design Requirements**

### **Breakpoints**
```css
/* Mobile First */
:root {
  --breakpoint-xs: 0px;
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
}

/* Mobile (<576px) */
@media (max-width: 575.98px) {
  /* Single column layout */
  /* Full-width inputs */
  /* Bottom navigation bar */
}

/* Tablet (≥576px) */
@media (min-width: 576px) {
  /* Two-column layout for chat */
  /* Side navigation */
}

/* Desktop (≥768px) */
@media (min-width: 768px) {
  /* Full multi-column layout */
  /* Sidebar + main content */
}
```

### **Mobile-Specific Requirements**
- [ ] **Touch Targets**: Minimum 48x48px for all interactive elements
- [ ] **Font Size**: Minimum 16px for body text
- [ ] **Viewport**: Proper meta tags for mobile
- [ ] **Input Types**: Use `type="number"`, `type="email"` etc. for better mobile UX
- [ ] **Virtual Keyboard**: Handle keyboard appearance/disappearance
- [ ] **Scroll Behavior**: Smooth scrolling, no horizontal scroll

### **Accessibility Requirements**
- [ ] **Color Contrast**: WCAG 2.1 AA compliance
- [ ] **Keyboard Navigation**: All functionality accessible via keyboard
- [ ] **Screen Reader Support**: ARIA labels, semantic HTML
- [ ] **Focus Indicators**: Visible focus states for all interactive elements
- [ ] **Alt Text**: All images have descriptive alt text
- [ ] **Error Messages**: Clear, accessible error messages

---

## **⚡ Performance Requirements**

### **Loading Times**
| Metric | Target | Measurement |
|--------|--------|-------------|
| First Contentful Paint | <1.5s | Lighthouse |
| Time to Interactive | <2.5s | Lighthouse |
| Largest Contentful Paint | <2.5s | Lighthouse |
| API Response Display | <500ms | Custom |

### **Optimizations**
- [ ] **Code Splitting**: Lazy load non-critical components
- [ ] **Image Optimization**: Compress images, use WebP format
- [ ] **Bundle Size**: Main JS bundle <1MB (uncompressed)
- [ ] **Tree Shaking**: Remove unused code
- [ ] **CDN**: Use CDN for static assets
- [ ] **Caching**: Implement service worker for offline caching

### **Progressive Web App (PWA)**
```json
{
  "name": "Aglimate",
  "short_name": "Aglimate",
  "start_url": "/",
  "display": "standalone",
  "background_color": "#ffffff",
  "theme_color": "#2E7D32",
  "icons": [
    {
      "src": "icon-192x192.png",
      "sizes": "192x192",
      "type": "image/png"
    },
    {
      "src": "icon-512x512.png",
      "sizes": "512x512",
      "type": "image/png"
    }
  ]
}
```

---

## **🌐 Offline Functionality**

### **Requirements**
- [ ] **Service Worker**: Cache API responses for offline use
- [ ] **Local Storage**: Store recent conversations
- [ ] **Offline Detection**: Notify user when offline
- [ ] **Queue Requests**: Queue requests made while offline, sync when online
- [ ] **Cached Data**: Display cached weather/data when offline

### **Implementation**
```javascript
// service-worker.js
const CACHE_NAME = 'aglimate-v1';
const ASSETS_TO_CACHE = [
  '/',
  '/index.html',
  '/static/css/main.css',
  '/static/js/main.js'
];

self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME)
      .then((cache) => cache.addAll(ASSETS_TO_CACHE))
  );
});

self.addEventListener('fetch', (event) => {
  event.respondWith(
    caches.match(event.request)
      .then((response) => response || fetch(event.request))
  );
});
```

---

## **🔒 Security Requirements**

### **Data Protection**
- [ ] **HTTPS**: Enforce HTTPS in production
- [ ] **Input Sanitization**: Sanitize all user inputs
- [ ] **XSS Protection**: Prevent cross-site scripting
- [ ] **CSRF Protection**: Implement CSRF tokens for forms
- [ ] **Rate Limiting**: Respect backend rate limits
- [ ] **Error Handling**: Don't expose sensitive info in errors

### **Privacy**
- [ ] **Data Minimization**: Collect only necessary data
- [ ] **User Consent**: Request permissions clearly
- [ ] **Location Data**: Explain why location is needed
- [ ] **Data Deletion**: Allow users to delete their data
- [ ] **Privacy Policy**: Display privacy policy

---

## **📊 Analytics & Monitoring**

### **Frontend Tracking**
- [ ] **Page Views**: Track page navigation
- [ ] **Feature Usage**: Track which features are used
- [ ] **Language Stats**: Track language preferences
- [ ] **Error Tracking**: Log frontend errors to backend
- [ ] **Performance**: Track load times, API response times

### **Implementation**
```javascript
// Analytics service
class Analytics {
  static trackEvent(category, action, label = null, value = null) {
    // Send to backend or external service
    fetch('/analytics', {
      method: 'POST',
      body: JSON.stringify({ category, action, label, value }),
      headers: { 'Content-Type': 'application/json' }
    }).catch(() => {});
  }
  
  static trackPageView(path) {
    this.trackEvent('page', 'view', path);
  }
  
  static trackError(error, context = {}) {
    fetch('/error', {
      method: 'POST',
      body: JSON.stringify({ error: error.message, context }),
      headers: { 'Content-Type': 'application/json' }
    }).catch(() => {});
  }
}
```

---

## **🚀 Deployment & Hosting**

### **Web Application**
- **Hosting**: Vercel, Netlify, or GitHub Pages
- **Custom Domain**: aglimate.ng or similar
- **SSL**: Automatic HTTPS
- **CI/CD**: GitHub Actions for automatic deployment

### **Mobile Application**
- **Android**: Google Play Store
- **iOS**: Apple App Store
- **APK**: Direct download for users without app stores

### **Environment Variables**
```env
# Development
REACT_APP_API_URL=http://localhost:7860
REACT_APP_ENV=development

# Production
REACT_APP_API_URL=https://your-backend-url.com
REACT_APP_ENV=production
REACT_APP_SENTRY_DSN=your-sentry-dsn
```

---

## **📅 Implementation Timeline**

### **Phase 1: MVP (4-6 weeks)**
| Week | Tasks | Priority |
|------|-------|----------|
| 1 | Setup project, design system, core components | ⭐⭐⭐ |
| 2 | Chat interface, API integration | ⭐⭐⭐ |
| 3 | Weather dashboard, responsive design | ⭐⭐⭐ |
| 4 | Multimodal advisory, testing | ⭐⭐ |
| 5 | Settings, user profile | ⭐⭐ |
| 6 | Polish, bug fixes, deployment | ⭐⭐ |

### **Phase 2: Enhanced Features (2-4 weeks)**
| Week | Tasks | Priority |
|------|-------|----------|
| 7 | Knowledge base, article viewer | ⭐⭐ |
| 8 | Farmer resources, expert directory | ⭐ |
| 9 | Market information, price tracker | ⭐ |
| 10 | Performance optimization | ⭐ |

### **Phase 3: Mobile & Advanced (4-6 weeks)**
| Week | Tasks | Priority |
|------|-------|----------|
| 11-12 | React Native mobile app | ⭐⭐ |
| 13-14 | USSD implementation | ⭐ |
| 15-16 | SMS gateway integration | ⭐ |

---

## **💰 Budget & Resources**

### **Team Requirements**
| Role | Count | Duration | Cost |
|------|-------|----------|------|
| Frontend Developer | 1-2 | 3 months | $$ |
| UI/UX Designer | 1 | 1 month | $ |
| QA Tester | 1 | Part-time | $ |
| Project Manager | 1 | Part-time | $ |

### **Technology Costs**
| Item | Cost | Notes |
|------|------|-------|
| Hosting | $0-20/month | Vercel free tier sufficient |
| Domain | $10-15/year | .ng domain recommended |
| Design Tools | $0-20/month | Figma free tier available |
| CI/CD | $0 | GitHub Actions free |

---

## **🎯 Success Metrics**

### **User Metrics**
| Metric | Target | Timeframe |
|--------|--------|-----------|
| Daily Active Users | 1,000 | 3 months |
| Monthly Active Users | 10,000 | 3 months |
| Retention Rate (30-day) | 50% | 3 months |
| Average Session Duration | 5 minutes | 3 months |
| Languages Used | 5+ | 3 months |

### **Technical Metrics**
| Metric | Target | Measurement |
|--------|--------|-------------|
| Lighthouse Score | 90+ | Google Lighthouse |
| API Response Time | <500ms | Custom monitoring |
| Uptime | 99.9% | Backend health checks |
| Error Rate | <1% | Custom monitoring |

### **Business Metrics**
| Metric | Target | Timeframe |
|--------|--------|-----------|
| Farmer Satisfaction | 4.5/5 | Continuous |
| Reduction in Expert Consultations | 30% | 6 months |
| Crop Yield Improvement | 10% | 12 months |
| Food Security Impact | Measurable | 12 months |

---

## **📚 Branding Guidelines**

### **Color Palette**
```
Primary:   #2E7D32 (Green - Agriculture)
Secondary: #66BB6A (Light Green)
Accent:    #FF8F00 (Orange - Nigeria)
Background: #FAFAFA (Off White)
Surface:   #FFFFFF (White)
Text:      #212121 (Dark Grey)
Error:     #D32F2F (Red)
Warning:   #FFA726 (Amber)
Info:      #1976D2 (Blue)
Success:   #388E3C (Dark Green)
```

### **Typography**
```css
/* Primary Font */
font-family: 'Roboto', 'Helvetica', 'Arial', sans-serif;

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Roboto Bold', sans-serif;
  font-weight: 700;
}

/* Body */
body {
  font-size: 16px;
  line-height: 1.5;
}

/* For Nigerian languages */
font-family: 'Noto Sans', 'Roboto', sans-serif;
```

### **Logo**
- **Icon**: Farm/agriculture related (corn, plant, sun)
- **Text**: "Aglimate" in bold, modern font
- **Tagline**: "Farmer-First Climate-Resilient Advisory"
- **Colors**: Green and orange

### **Tone & Voice**
- **Friendly**: Approachable, not intimidating
- **Professional**: Expertise, but not jargon-heavy
- **Encouraging**: Supportive, positive reinforcement
- **Clear**: Simple language, easy to understand
- **Respectful**: Values farmer knowledge and experience

---

## **📝 Content Guidelines**

### **Writing for Farmers**
1. **Use Simple Language**: Avoid technical jargon
2. **Short Sentences**: Easy to read and understand
3. **Action-Oriented**: Focus on what farmers should DO
4. **Local Examples**: Use Nigerian farming examples
5. **Visual**: Use icons and images where possible
6. **Multilingual**: Support all major Nigerian languages

### **Example Messages**
```
❌ "The optimal planting window for Zea mays is during the initial precipitation events of the rainy season."

✅ "The best time to plant maize is at the beginning of the rainy season, when the first rains start."
```

---

## **🔄 Integration with Backend**

### **API Contract**
All frontend development must respect the existing backend API contract. Any changes to API requirements must be coordinated with the backend developer (Oluchukwu Prosper).

### **Testing**
- [ ] Test all endpoints with mock data before integration
- [ ] Validate API responses match frontend expectations
- [ ] Handle API errors gracefully
- [ ] Implement loading states for all async operations
- [ ] Test with slow networks (throttle in dev tools)

---

## **📋 Acceptance Criteria**

### **MVP Acceptance**
- [ ] Chat interface works for all supported languages
- [ ] Weather dashboard displays correctly
- [ ] Multimodal advisory form works
- [ ] Responsive on mobile and desktop
- [ ] All API endpoints integrated
- [ ] Error handling implemented
- [ ] Loading states visible
- [ ] Offline caching works
- [ ] Deployed and accessible

### **Quality Acceptance**
- [ ] Lighthouse score > 90
- [ ] No critical accessibility issues
- [ ] No console errors
- [ ] All interactive elements work
- [ ] Consistent UI across devices
- [ ] Fast load times
- [ ] Works on 3G network speeds

---

## **🏁 Next Steps**

### **For Frontend Developer**
1. **Review this PRD** carefully
2. **Ask clarifying questions** to Oluchukwu Prosper
3. **Create design mockups** for approval
4. **Set up development environment**
5. **Start with MVP features** (Chat + Weather)
6. **Integrate with backend** early
7. **Test on real devices** (especially low-end Android)

### **For Backend Developer (Oluchukwu Prosper)**
1. **Provide API documentation**
2. **Set up staging environment** for frontend testing
3. **Monitor backend logs** for frontend integration issues
4. **Optimize backend** based on frontend usage patterns
5. **Add new endpoints** as frontend requires

### **For Project Manager**
1. **Coordinate between frontend and backend**
2. **Track progress** against timeline
3. **Manage resources** and budget
4. **Organize user testing** with farmers
5. **Plan deployment** and marketing

---

## **📞 Contact Information**

| Role | Name | Contact |
|------|------|---------|
| Backend Developer | Oluchukwu Prosper | prosper@example.com |
| Frontend Lead | [TBD] | [TBD] |
| Project Manager | [TBD] | [TBD] |
| Technical Support | [TBD] | [TBD] |

---

## **📜 Appendix**

### **Glossary**
| Term | Definition |
|------|------------|
| Smallholder Farmer | Farmer with small plot of land (typically <2 hectares) |
| Multimodal | Using multiple input types (text, image, voice, etc.) |
| RAG | Retrieval-Augmented Generation - AI with access to external knowledge |
| LLM | Large Language Model - AI that generates text |
| Qwen | Open-source large language model used by Aglimate |
| PWA | Progressive Web App - Web app that works like a native app |
| USSD | Unstructured Supplementary Service Data - Menu system for feature phones |

### **References**
- [Aglimate Backend Documentation](SYSTEM_OVERVIEW.md)
- [FastAPI Documentation](https://fastapi.tiangolo.com/)
- [React Documentation](https://react.dev/)
- [Vue Documentation](https://vuejs.org/)
- [MDN Web Docs](https://developer.mozilla.org/)

---

**Document Status**: ✅ Approved  
**Next Review**: July 20, 2026  
**Version Control**: Git  

---

*"Empowering Nigerian farmers with AI-driven climate-smart advice."*  
- **Oluchukwu Prosper, Developer**