如何反向下载 Telegram 消息？

Question

我通过 GetHistoryRequest 获取 Telegram 频道的所有消息。我想每天运行一个脚本，它会给我新的消息。是否可以颠倒 GetHistoryRequest 中消息的顺序？我看到了一个附加属性reverse=True，但这给了我一条错误消息。这是代码（可在线获取）

history = client(GetHistoryRequest(
            peer=my_channel,
            offset_id=0,
            offset_date=None,
            add_offset=0,
            limit=limit,
            max_id=0,
            min_id=0,
            hash=0
        ))

Answer 1

根据文档

GetHistoryRequest

没有

reverse

参数。但是，该方法

client.iter_messages

确实可以

Answer 2

这在这里有效。下载 100 条消息

from telethon.tl import functions, types

channel_link = "https://t.me/joinchat/xxxxxx-xxx"
channel_hash = channel_link.strip().split("joinchat/",1)[1]


channel = await client(functions.messages.CheckChatInviteRequest(hash=channel_hash))
    async for message in client.iter_messages(channel.chat, limit = 100,reverse=True):

Answer 3

  while True:
        # Fetch a batch of messages
        history = await self.client(GetHistoryRequest(
            peer=source[0],
            limit=batch_size,
            offset_date=None,
            offset_id=offset_id,  # No offset, as we're starting from the first message
            max_id=0,
            min_id=0,  # Start from the current min_id
            add_offset=0,
            hash=0
        ))

        if not history.messages:
            # Stop if there are no more messages
            break

        total_messages += len(history.messages)
        print(f"Fetched {total_messages} messages so far")

        for message in history.messages[::-1]:  # Process messages from oldest to newest
            try: