from typing import Any
from bta_proxy.datainputstream import AsyncDataInputStream, SyncDataInputStream


class ItemStack:
    __slots__ = ("item_id", "count", "data", "tag")
    def __init__(self, item_id: int, count: int, data: int, tag: Any = None):
        self.item_id = item_id
        self.count = count
        self.data = data
        self.tag = tag

    @classmethod
    async def read_from(cls, stream: AsyncDataInputStream) -> 'ItemStack':
        item_id = await stream.read_short()
        count = await stream.read()
        data = await stream.read_ushort()
        return cls(item_id, count, data)

    @classmethod
    def read_from_sync(cls, stream: SyncDataInputStream) -> 'ItemStack':
        item_id = stream.read_short()
        count = stream.read()
        data = stream.read_ushort()
        return cls(item_id, count, data)

    def __bool__(self):
        return self.item_id > 0 and self.count > 0

    def __repr__(self):
        if self.tag:
            return f'<ItemStack! {self.item_id}:{self.data} x{self.count}>'
        return f'<ItemStack {self.item_id}:{self.data} x{self.count}>'