User Profiles Smart Contract

This Solana-based smart contract, built with the Anchor framework, enables users to create and manage profiles, follow others, and maintain a registry of all users. Designed for scalability, future iterations will introduce more advanced features. It serves as a foundational engine for building decentralized communities.

Interact with Our 3D WebGL DApp Demo on Devnet

users-ekza2.mp4

User Profile Account Structure

The UserProfile struct represents a user's profile in the Solana program. It includes essential information about the user, such as their identity, links, and their social connections. This data is stored on-chain and can be referenced by other users.

#[account]
pub struct UserProfile {
    pub owner: Pubkey,              // The public key of the profile owner
    pub nickname: String,           // User's nickname
    pub description: String,        // Short bio or description
    pub twitter_link: String,       // Link to Twitter profile
    pub website_link: String,       // Personal or business website
    pub email: String,              // User's email address
    pub registration_time: i64,     // UNIX timestamp of profile registration
    pub following: Vec<Pubkey>,     // List of public keys of followed users
    pub pic: String,                // IPFS hash for profile picture
    pub avatar: String,             // IPFS hash for avatar
}

The total maximum size of the UserProfile account at the moment is:

const MAX_SIZE: usize = 32          // owner
    + 8                             // registration_time
    + 4 + 32                        // nickname
    + 4 + 256                       // description
    + 4 + 64                        // twitter_link
    + 4 + 64                        // website_link
    + 4 + 64                        // email
    + 4 + 64                        // pic (IPFS hash)
    + 4 + 64                        // avatar (IPFS hash)
    + 4 + (32 * 32);                // following

    // total: 1,704 bytes

Features

• Initialize User List: Create a central account to store a list of all users.
• Create User Profile: Users can create a personal profile with information like nickname, description, Twitter link, and website link.
• Follow Users: Users can follow other users, maintaining a list of accounts they are following.
• Update Profile: Users can update their profile information at any time.
• Delete Profile: Users can delete their profiles, which also removes them from the global users list.

Future Enhancements

• Account Partitions: Add account partitions to handle more users efficiently by splitting data across multiple accounts to support a larger user base.
• Subscription with Donation: Add a feature that allows users to subscribe to others and make donations either once or on a monthly basis.

Getting Started

Prerequisites

• Solana CLI installed and configured.
• Anchor CLI installed and set up.
• Node.js and npm installed.

Development

run local node (if meet problem with test validator)

% solana config set --url localhost # or devnet
% anchor build 
% anchor deploy
% anchor test