from lib.block import Block


class Chain:
    def __init__(self):
        self.blocks = []

    def add_block(self, block: Block):
        self.blocks.append(block)

    def last_block(self):
        return self.blocks[-1]

    def get_height(self):
        return self.last_block().height

    def find_transactions(self, address):
        found = []
        for block in self.blocks:
            for transaction in block.transactions:
                if transaction.sender == address or transaction.receiver == address:
                    found.append(transaction)
        return found