39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
use crate::encoding::approvals::interface::{Approval, UserApprovalsManager};
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use alloy_primitives::U256;
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use std::str::FromStr;
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use tycho_core::Bytes;
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pub struct Permit2 {
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pub address: Bytes,
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}
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impl Permit2 {
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pub fn new() -> Self {
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Self {
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address: Bytes::from_str("0x000000000022D473030F116dDEE9F6B43aC78BA3")
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.expect("Permit2 address not valid"),
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}
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}
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fn get_allowance_data(
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&self,
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user: Bytes,
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router_address: Bytes,
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token: Bytes,
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) -> (U256, u64, U256) {
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// get allowance data (if it exists) and the nonce
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// returns permitAmount, expiration, nonce
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todo!()
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}
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}
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impl UserApprovalsManager for Permit2 {
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fn encode_approvals(&self, approvals: Vec<Approval>) -> Vec<u8> {
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// calls get_allowance_data to get nonce
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// checks if we are not permitted already
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// puts data into a permitSingle struct if there is only 1 PermitDetails, if there are several, use PermitBatch
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// adds the nonce and the expiration (uniswap recommends 30 days for expiration)
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// signs data
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// returns encoded data
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todo!()
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}
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}
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