triggr-program 0.1.1

Created with Anchor
Documentation 
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pub use crate::state::*;
use anchor_lang::{
    prelude::*,
    system_program::{transfer, System, Transfer},
};

#[derive(Accounts)]
pub struct CloseUser<'info> {
    #[account(mut)]
    authority: Signer<'info>,

    #[account(mut, seeds = ["payer".as_bytes(), authority.key().as_ref()], bump)]
    payer_pda: SystemAccount<'info>,

    #[account(mut, close = authority, seeds = ["user".as_bytes(), &authority.key().to_bytes()[..]], bump)]
    user: Account<'info, User>,

    system_program: Program<'info, System>,
}

pub fn handler(ctx: Context<CloseUser>) -> Result<()> {
    let lamports = ctx.accounts.payer_pda.lamports();

    let authority = ctx.accounts.authority.key();

    let payer_seeds = &[
        "payer".as_bytes(),
        &authority.as_ref()[..],
        &[ctx.bumps["payer_pda"]],
    ];
    let payer = &[&payer_seeds[..]];

    let cpi_context = CpiContext::new_with_signer(
        ctx.accounts.system_program.to_account_info(),
        Transfer {
            from: ctx.accounts.payer_pda.to_account_info(),
            to: ctx.accounts.authority.to_account_info(),
        },
        payer,
    );

    transfer(cpi_context, lamports)?;

    Ok(())
}