use serde::{Serialize, Deserialize};
use tetratto_shared::{snow::Snowflake, unix_epoch_timestamp};

use super::auth::User;

#[derive(Serialize, Deserialize)]
pub struct CoinTransfer {
    pub id: usize,
    pub created: usize,
    pub sender: usize,
    pub receiver: usize,
    pub amount: i32,
}

impl CoinTransfer {
    /// Create a new [`CoinTransfer`].
    pub fn new(sender: usize, receiver: usize, amount: i32) -> Self {
        Self {
            id: Snowflake::new().to_string().parse::<usize>().unwrap(),
            created: unix_epoch_timestamp(),
            sender,
            receiver,
            amount,
        }
    }

    /// Apply the effects of this transaction onto the sender and receiver balances.
    ///
    /// # Returns
    /// `(sender bankrupt, receiver bankrupt)`
    pub fn apply(&self, sender: &mut User, receiver: &mut User) -> (bool, bool) {
        sender.coins -= self.amount;
        receiver.coins += self.amount;
        (sender.coins < 0, receiver.coins < 0)
    }
}