SmartContract.rs (Solana)

// lib.rs (Solana Smart Contract)

use anchor_lang::prelude::*;
use std::str::FromStr;

#[program]
pub mod artwork_storage {
    use super::*;

    // Structure to store artwork details
    pub fn upload_artwork(ctx: Context<UploadArtwork>, image_url: String, description: String) -> Result<()> {
        let artwork = &mut ctx.accounts.artwork;
        artwork.image_url = image_url;
        artwork.description = description;
        artwork.uploader = ctx.accounts.uploader.key();
        artwork.timestamp = Clock::get()?.unix_timestamp;

        Ok(())
    }

    // Function to fetch all uploaded artworks (Note: Solana doesn't support return of large data natively)
    pub fn get_artworks(ctx: Context<GetArtworks>) -> Result<Vec<Artwork>> {
        Ok(vec![])  // Placeholder: Solana smart contracts don't support complex return types directly
    }
}

#[account]
pub struct Artwork {
    pub image_url: String,
    pub description: String,
    pub uploader: Pubkey,
    pub timestamp: i64,
}

#[derive(Accounts)]
pub struct UploadArtwork<'info> {
    #[account(init, payer = uploader, space = 8 + 128 + 128 + 32 + 8)]
    pub artwork: Account<'info, Artwork>,
    #[account(mut)]
    pub uploader: Signer<'info>,
    pub system_program: Program<'info, System>,
}

#[derive(Accounts)]
pub struct GetArtworks<'info> {
    #[account(signer)]
    pub user: AccountInfo<'info>,
}