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| module flashlend::flashlend;
use sui::balance::{Self, Balance};
use sui::coin::{Self, Coin};
use sui::sui::SUI;
use sui::transfer::transfer;
public struct Flashlend has key {
id: UID,
val: Balance<SUI>,
}
public struct AdminCap has key {
id: UID,
}
public struct Receipt {
val: u64,
}
fun init(ctx: &mut TxContext) {
let flash_lend = Flashlend { id: object::new(ctx), val: balance::zero() };
let admin = AdminCap { id: object::new(ctx) };
transfer(admin, ctx.sender());
}
public fun lend(pool: &mut Flashlend, amout: u64, ctx: &mut TxContext): (Receipt, Coin<SUI>) {
let bal = pool.val.split(amout);
let sui_coin = coin::from_balance(bal, ctx);
let receipt = Receipt { val: amout+amout/100 };
(receipt, sui_coin)
}
public fun repay(pool: &mut Flashlend, re_amout: Receipt, in: Coin<SUI>) {
let in_amout = coin::value(&in);
assert!(in_amout == re_amout.val, 0x11);
let bal = coin::into_balance(in);
pool.val.join(bal);
let Receipt { val } = re_amout;
}
#[test]
//伪代码
fun handle() {
let (sui, re) = lend();
repay(pool, re_amout, in);
}
|