features.md

DisasterWatch Features

This document outlines the main features of the DisasterWatch web application, including real-time alerts, interactive maps, user profiles, resource management, and the notification system.

Real-time Alerts

Overview

The application provides real-time alerts about natural disasters, allowing users to stay informed about ongoing events in their area.

Key Features

• Live Updates: Alerts are updated in real-time as new information becomes available.
• Filtering: Users can filter alerts by type, location, and severity.
• Push Notifications: Users can opt-in to receive push notifications for critical alerts.

Implementation

// Example of fetching real-time alerts
const fetchAlerts = async () => {
  const response = await api.get('/alerts');
  setAlerts(response.data);
};

Interactive Maps

Overview

The application includes an interactive map that displays disaster zones and relevant information.

Key Features

• Disaster Zones: Highlighted areas on the map indicate disaster zones.
• User Location: Users can view their current location on the map.
• Custom Markers: Custom markers for different types of disasters.

Implementation

// Example of rendering a map with disaster zones
const MapView = () => {
  return (
    <GoogleMap
      center={center}
      zoom={zoom}
    >
      {disasterZones.map(zone => (
        <Polygon
          key={zone.id}
          paths={zone.coordinates}
          options={{
            fillColor: zone.severity === 'high' ? 'red' : 'yellow',
            fillOpacity: 0.5,
            strokeColor: 'black',
            strokeWeight: 1
          }}
        />
      ))}
    </GoogleMap>
  );
};

User Profiles

Overview

Users can create and manage their profiles, including personal information and preferences.

Key Features

• Profile Creation: Users can create a profile with personal details.
• Profile Updates: Users can update their profile information at any time.
• Preferences: Users can set preferences for notifications and alerts.

Implementation

// Example of updating user profile
const updateProfile = async (userData) => {
  const response = await api.put('/profile', userData);
  setUser(response.data);
};

Resource Management

Overview

The application allows users to manage resources related to disaster response and recovery.

Key Features

• Resource Listing: Users can view a list of available resources.
• Resource Allocation: Users can allocate resources to specific disaster zones.
• Resource Tracking: Track the status and location of resources.

Implementation

// Example of fetching resources
const fetchResources = async () => {
  const response = await api.get('/resources');
  setResources(response.data);
};

Notification System

Overview

The application includes a notification system to keep users informed about important updates.

Key Features

• Push Notifications: Users can receive push notifications for critical alerts.
• In-App Notifications: Notifications are also displayed within the application.
• Notification Preferences: Users can customize their notification settings.

Implementation

// Example of subscribing to push notifications
const subscribeToNotifications = async () => {
  const registration = await navigator.serviceWorker.ready;
  const subscription = await registration.pushManager.subscribe({
    userVisibleOnly: true,
    applicationServerKey: process.env.NEXT_PUBLIC_VAPID_PUBLIC_KEY
  });
  await api.post('/notifications/subscribe', subscription);
};

Additional Features

1. Offline Support

• The application can function offline, allowing users to access critical information without an internet connection.

2. Responsive Design

• The application is designed to be responsive, providing a seamless experience on both desktop and mobile devices.

3. Accessibility

• The application adheres to accessibility guidelines, ensuring that all users can access and use the application effectively.

4. Analytics and Reporting

• The application includes analytics and reporting features to track user engagement and application performance.

Future Enhancements

1. Enhanced Real-time Features

• Integration with more data sources for real-time updates.
• Advanced filtering and search capabilities.

2. User Engagement

• Community features, such as user forums and shared resources.
• Gamification elements to encourage user participation.

3. Integration with External Services

• Integration with emergency services and disaster response organizations.
• Support for third-party applications and APIs.

4. Advanced Analytics

• Predictive analytics for disaster forecasting.
• Customizable dashboards for data visualization.

Testing

Feature Tests

describe('Real-time Alerts', () => {
  it('should fetch alerts successfully', async () => {
    // Test alert fetching
  });

  it('should filter alerts by type', async () => {
    // Test alert filtering
  });
});

describe('Interactive Maps', () => {
  it('should render disaster zones correctly', () => {
    // Test map rendering
  });

  it('should update user location', () => {
    // Test location updates
  });
});

Troubleshooting

Common Issues

1. Alert Notifications

   • Check notification settings
   • Verify push notification subscription
   • Ensure network connectivity

2. Map Rendering

   • Check Google Maps API key
   • Verify map data sources
   • Clear browser cache

3. Profile Updates

   • Check API responses
   • Verify user permissions
   • Review data validation

Getting Help

• Check the Issues page
• Create a new issue with detailed information
• Join our Discord community for support