在 上一篇教程中, 我们创建了自动回复消息的机器人,当用户发送消息"Hello,World!"时，机器人会自动回复同一条消息!

第二课: 机器人接受比特币并立即退还用户

按本篇教程后学习后完成后，你的机器人将会接受用户发送过来的加密货币，然后立即转回用户。 完整代码如下：

app.py

from mixin_ws_api import MIXIN_WS_API
from mixin_api import MIXIN_API
import mixin_config
import json
import time
from io import BytesIO
import base64
import gzip
try:
    import thread
except ImportError:
    import _thread as thread
def on_message(ws, message):
    inbuffer = BytesIO(message)
    f = gzip.GzipFile(mode="rb", fileobj=inbuffer)
    rdata_injson = f.read()
    rdata_obj = json.loads(rdata_injson)
    print("-------json object begin---------")
    print(rdata_obj)
    print("-------json object end---------")
    action = rdata_obj["action"]
    if rdata_obj["data"] is not None:
        print("data in message:",rdata_obj["data"])
    if rdata_obj["data"] is not None and rdata_obj["data"]["category"] is not None:
        print(rdata_obj["data"]["category"])
    if action == "CREATE_MESSAGE":
        data = rdata_obj["data"]
        msgid = data["message_id"]
        typeindata = data["type"]
        categoryindata = data["category"]
        userId = data["user_id"]
        conversationId = data["conversation_id"]
        dataindata = data["data"]
        created_at = data["created_at"]
        updated_at = data["updated_at"]
        realData = base64.b64decode(dataindata)
        MIXIN_WS_API.replayMessage(ws, msgid)
        print('userId', userId)
        print("created_at",created_at)
        if categoryindata == "PLAIN_TEXT":
            realData = realData.decode('utf-8')
            print("dataindata",realData)
            MIXIN_WS_API.sendUserText(ws, conversationId, userId, realData)
        elif categoryindata == "SYSTEM_ACCOUNT_SNAPSHOT":
            rdJs = json.loads(realData)
            if ( float(rdJs["amount"]) > 0 ):
                mixin_api.transferTo(userId, rdJs["asset_id"], rdJs["amount"], "")
if __name__ == "__main__":
    mixin_api = MIXIN_API(mixin_config)
    mixin_ws = MIXIN_WS_API(on_message=on_message)
    mixin_ws.run()
复制代码

Hello Bitcoin!

在项目目录下，执行 python app.py

cd mixin_labs-python-bot
source ./bin/activate
(mixin_labs-python-bot) wenewzha:mixin_labs-python-bot wenewzhang$ python app.py
ws open
-------json object begin---------
{'id': 'fd6ce766-331a-11e9-92a9-20c9d08850cd', 'action': 'LIST_PENDING_MESSAGES'}
-------json object end---------
复制代码

开发者可以通过消息面板，给机器人转比特币，当机器人收到比特币后，马上返还给用户！

<figure><figcaption></figcaption></figure>

事实上，用户可以发送任意的币种给机器人，它都能马上返还！

<figure><figcaption></figcaption></figure>

源代码解释

elif categoryindata == "SYSTEM_ACCOUNT_SNAPSHOT":
    rdJs = json.loads(realData)
    if ( float(rdJs["amount"]) > 0 ):
        mixin_api.transferTo(userId, rdJs["asset_id"], rdJs["amount"], "")
复制代码

如果机器人收到币，rdJs["amount"] 大于零；如果机器人支付币给用户，接收到的消息是一样的，唯一不同的是,rdJs["amount"]是一个负数. 最后一步，调用SDK的 mixin_api.transferTo 将币返还用户！

高级用法

coming soon!