use crate::ClientItemId;

#[derive(Debug, Clone)]
pub enum TradeItem {
    Individual(ClientItemId),
    Stacked(ClientItemId, usize),
}

impl TradeItem {
    pub fn stacked(&self) -> Option<(ClientItemId, usize)> {
        match self {
            TradeItem::Stacked(item_id, amount) => Some((*item_id, *amount)),
            _ => None
        }
    }

    pub fn stacked_mut(&mut self) -> Option<(ClientItemId, &mut usize)> {
        match self {
            TradeItem::Stacked(item_id, ref mut amount) => Some((*item_id, amount)),
            _ => None
        }
    }

    pub fn item_id(&self) -> ClientItemId  {
        match self {
            TradeItem::Individual(item_id) => *item_id,
            TradeItem::Stacked(item_id, _) => *item_id,
        }
    }

    pub fn amount(&self) -> usize {
        match self {
            TradeItem::Individual(_) => 1,
            TradeItem::Stacked(_, amount) => *amount,
        }
    }
}