Djowda DIFP Store

Djowda DIFP Store is a decentralized food discovery web application built on top of the Djowda Interconnected Food Protocol (DIFP). It allows users to discover local food sources, manage inventory, and broadcast needs or donations over the Nostr network without requiring a centralized account.

Features

• Decentralized Identity: Your identity is a cryptographic keypair (secp256k1) generated and stored locally in your browser. No signup required.
• Geo-Aware Discovery: Find nearby stores, farmers, restaurants, and more based on your location or a specific Cell ID.
• Inventory Management: Easily list products available for sale, set prices, and toggle availability.
• Community Broadcasts:
  • Ask List: Broadcast products you are looking for.
  • Donation List: Broadcast products you want to donate to the community.
• Real-time Updates: Status and listings are published as Nostr events (Kind 30420 for Presence, Kind 30421 for Catalogs).
• Thematic Avatars: Automatic thematic avatar assignment based on your component type (Store, Farmer, Restaurant, etc.), preloaded from the @djowda/difp package.

Screenshots

Join Screen	Home Tab

Product Modal	Discover Tab

How it Works

The application uses the @djowda/difp library to interact with the DIFP protocol on Nostr.

DIFP Protocol Implementation

• Presence (Kind 30420): Published when you join or update your profile. Includes metadata like name, phone, component type, and working hours.
• Catalogs (Kind 30421): Published when you update your inventory, ask list, or donation list. These are tagged with your pubkey and the list type (-l for listings, -a for asks, -d for donations).
• Grid System: The protocol uses a cell-based grid system (500m x 500m cells) to enable efficient geo-spatial queries over Nostr relays.

Getting Started

1. Open the App: Simply open index.html in a modern web browser.
2. Join the Network: Enter your store or farm name, optional phone number, and location. Select your component type.
3. Manage Your Profile: Use the "Edit" button to update your information.
4. List Products: Go to the "Inventory" tab, click on a product, set its price and availability, and confirm.
5. Discover Others: Go to the "Discover" tab to search for other DIFP components in your area.

Technical Details

• Frontend: Vanilla JavaScript, HTML5, and CSS3.
• Protocol SDK: @djowda/difp (available on npm).
• Nostr Communication: Direct WebSocket connection to Nostr relays (defaults to wss://relay.damus.io).
• Assets: Avatars are served from the @djowda/difp package assets.

License

This project is licensed under the MIT License.