Open the lib.rs file inside the programs/solana-spl-tutorial/src directory and replace its content with the following code:
use anchor_lang::prelude::*;
use spl_token::instruction::mint_to;
use solana_program::program::invoke;
declare_id!("YourProgramID");
#[program]
pub mod solana_spl_tutorial {
use super::*;
pub fn mint_token(ctx: Context<MintToken>, amount: u64) -> Result<()> {
let cpi_accounts = MintTo {
mint: ctx.accounts.mint.to_account_info(),
to: ctx.accounts.token_account.to_account_info(),
authority: ctx.accounts.authority.to_account_info(),
};
let cpi_program = ctx.accounts.token_program.to_account_info();
let cpi_ctx = CpiContext::new(cpi_program, cpi_accounts);
invoke(
&mint_to(
ctx.accounts.token_program.key,
ctx.accounts.mint.key,
ctx.accounts.token_account.key,
ctx.accounts.authority.key,
&[],
amount,
)?,
&[
ctx.accounts.mint.to_account_info(),
ctx.accounts.token_account.to_account_info(),
ctx.accounts.authority.to_account_info(),
],
)?;
Ok(())
}
}
#[derive(Accounts)]
pub struct MintToken<'info> {
#[account(mut)]
pub mint: AccountInfo<'info>,
#[account(mut)]
pub token_account: AccountInfo<'info>,
#[account(signer)]
pub authority: AccountInfo<'info>,
pub token_program: AccountInfo<'info>,
}