use solana_program::{account_info::AccountInfo, entrypoint::ProgramResult, pubkey::Pubkey};

pub fn process_instruction(program_id: &Pubkey, accounts: &[AccountInfo], instruction_data: &[u8]) -> ProgramResult {

let mut lamports = accounts[0].lamports();

let mut data = accounts[0].data.borrow_mut();

data[0] = instruction_data[0];

accounts[0].lamports.set(lamports);

Ok(())

}

struct SigmaToken {

pub mint: Pubkey,

pub authority: Pubkey,

pub supply: u64,

}

impl SigmaToken {

pub fn new(mint: Pubkey, authority: Pubkey) -> Self {

Self { mint, authority, supply: 0 }

}

pub fn mint(&mut self, amount: u64) -> Result<(), ProgramError> {

self.supply = self.supply.checked_add(amount).ok_or(ProgramError::ArithmeticOverflow)?;

Ok(())

}

}

let mut sigma_labs = SigmaLabs::new();

sigma_labs.add_project(Project::new("DeFi Protocol", "Revolutionary lending platform"));

sigma_labs.add_project(Project::new("NFT Marketplace", "Next-gen digital art trading"));

sigma_labs.add_project(Project::new("DAO Governance", "Community-driven decision making"));

for project in sigma_labs.projects.iter() {

println!("Project: {}", project.name);

println!("Description: {}", project.description);

}

async fn deploy_to_solana(program: &Program) -> Result<Signature, Box<dyn std::error::Error>> {

let client = RpcClient::new("https://api.mainnet-beta.solana.com".to_string());

let signature = client.send_and_confirm_transaction(&transaction)?;

Ok(signature)

}

let mut blockchain = Blockchain::new();

blockchain.add_block(Block::new(previous_hash, transactions));

blockchain.validate_chain()?;

println!("Blockchain is valid!");

let smart_contract = SmartContract::new(

"SigmaLabsToken",

"SLT",

1000000,

TokenStandard::Fungible

);

smart_contract.deploy(&client).await?;

println!("Smart contract deployed successfully!");