from pyrogram.api import types


def get_peer_id(input_peer) -> int:
    return (
        input_peer.user_id if isinstance(input_peer, types.InputPeerUser)
        else -input_peer.chat_id if isinstance(input_peer, types.InputPeerChat)
        else int("-100" + str(input_peer.channel_id))
    )


def get_input_peer(peer_id: int, access_hash: int):
    return (
        types.InputPeerUser(peer_id, access_hash) if peer_id > 0
        else types.InputPeerChannel(int(str(peer_id)[4:]), access_hash)
        if (str(peer_id).startswith("-100") and access_hash)
        else types.InputPeerChat(-peer_id)
    )


def get_offset_date(dialogs):
    for m in reversed(dialogs.messages):
        if isinstance(m, types.MessageEmpty):
            continue
        else:
            return m.date
    else:
        return 0