//! This module implements the processing logic for ICS20 (token transfer) message.
use crate::applications::transfer::context::Ics20Context;
use crate::applications::transfer::error::Error as Ics20Error;
use crate::applications::transfer::is_sender_chain_source;
use crate::applications::transfer::packet::PacketData;
use crate::core::ics04_channel::packet::Packet;
use crate::prelude::*;

pub mod on_ack_packet;
pub mod on_recv_packet;
pub mod on_timeout_packet;
pub mod send_transfer;

fn refund_packet_token(
    ctx: &mut impl Ics20Context,
    packet: &Packet,
    data: &PacketData,
) -> Result<(), Ics20Error> {
    let sender = data
        .sender
        .clone()
        .try_into()
        .map_err(|_| Ics20Error::parse_account_failure())?;

    if is_sender_chain_source(
        packet.source_port.clone(),
        packet.source_channel.clone(),
        &data.token.denom,
    ) {
        // unescrow tokens back to sender
        let escrow_address =
            ctx.get_channel_escrow_address(&packet.source_port, &packet.source_channel)?;

        ctx.send_coins(&escrow_address, &sender, &data.token)
    }
    // mint vouchers back to sender
    else {
        ctx.mint_coins(&sender, &data.token)
    }
}