Ruby 比特币开发教程: 机器人接受比特币并立即退还用户

摘要：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时，机器人会自动回复同一条消息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。

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!

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。下面是全部源代码，创建一个websocket_mixin_bot.rb试一下吧！

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require "faye/websocket"
require "eventmachine"
require "json"
require "zlib"
require "mixin_bot"
require "yaml"
yaml_hash = YAML.load_file("./config.yml")
MixinBot.client_id  = yaml_hash["MIXIN_CLIENT_ID"]
MixinBot.session_id = yaml_hash["MIXIN_SESSION_ID"]
MixinBot.client_secret = yaml_hash["MIXIN_CLIENT_SECRET"]
MixinBot.pin_token   = yaml_hash["MIXIN_PIN_TOKEN"]
MixinBot.private_key = yaml_hash["MIXIN_PRIVATE_KEY"]
access_token = MixinBot.api.access_token("GET","/","")
puts access_token
authorization = format("Bearer %s", access_token)
EM.run {
  ws = Faye::WebSocket::Client.new("wss://blaze.mixin.one/", ["Mixin-Blaze-1"],
    :headers => { "Authorization" => authorization }
  )
  ws.on :open do |event|
    p [:open]
    ws.send(MixinBot.api.list_pending_message)
  end
  ws.on :message do |event|
    p [:message]
    data = event.data
    msg = MixinBot.api.read_message(data)
    jsmsg =  JSON.parse msg
    p jsmsg
    # p jsmsg["data"]
    if jsmsg["action"] == "CREATE_MESSAGE" && jsmsg["data"] != nil
      msgid = jsmsg["data"]["message_id"]
      ws.send(MixinBot.api.acknowledge_message_receipt(msgid))
      if jsmsg["data"]["category"] == "PLAIN_TEXT"
        conversation_id = jsmsg["data"]["conversation_id"]
        decoded_msg = Base64.decode64 jsmsg["data"]["data"]
        p decoded_msg
        if decoded_msg == "?" or decoded_msg == "h" or decoded_msg == "H"
          reply_msg = "?: help
" + "1: Payment link for APP_CARD
" + "2: Payment link for APP_BUTTON_GROUP
"
          reply_msg = MixinBot.api.plain_text_message(conversation_id,reply_msg)
          ws.send(reply_msg)
        elsif (decoded_msg == "1")
          payLinkEOS = "https://mixin.one/pay?recipient=" +
             "a1ce2967-a534-417d-bf12-c86571e4eefa" + "&asset=" +
             "6cfe566e-4aad-470b-8c9a-2fd35b49c68d" +
             "&amount=0.001" + "&trace=" + SecureRandom.uuid +
             "&memo="
          msgData = {
                       "icon_url":"https://mixin.one/assets/98b586edb270556d1972112bd7985e9e.png",
                       "title":"Pay 0.001 EOS",
                       "description":"pay",
                       "action":payLinkEOS
                     }
          ws.send(MixinBot.api.
                  app_card_message(conversation_id,
                                    msgData))
        elsif decoded_msg == "2"
          payLinkEOS = "https://mixin.one/pay?recipient=" +
             "a1ce2967-a534-417d-bf12-c86571e4eefa" + "&asset=" +
             "6cfe566e-4aad-470b-8c9a-2fd35b49c68d" +
             "&amount=0.001" + "&trace=" + SecureRandom.uuid +
             "&memo="
          payLinkEOS = "https://mixin.one/pay?recipient=" +
             MixinBot.client_id + "&asset=" +
             "6cfe566e-4aad-470b-8c9a-2fd35b49c68d" +
             "&amount=0.001" + "&trace=" + SecureRandom.uuid +
             "&memo="
          payLinkBTC = "https://mixin.one/pay?recipient=" +
                       MixinBot.client_id + "&asset=" +
                       "c6d0c728-2624-429b-8e0d-d9d19b6592fa" +
                       "&amount=0.0001" + "&trace=" + SecureRandom.uuid +
                       "&memo="
          button1 = {
                    label: "Pay 0.001 EOS",
                    color:  "#FFABAB",
                    action: payLinkEOS
                    }
          button2 = {
                    label: "Pay 0.0001 BTC",
                    color:  "#00EEFF",
                    action: payLinkBTC
                    }
          buttons = [button1,button2]
          ws.send(MixinBot.api.
                      app_button_group_message(conversation_id,
                                              jsmsg["data"]["user_id"],
                                              buttons))
           p "send app button group"
        else
          reply_msg = MixinBot.api.plain_text_message(conversation_id,decoded_msg)
          ws.send(reply_msg)
        end
      end
      if jsmsg["data"]["category"] == "SYSTEM_ACCOUNT_SNAPSHOT"
        jsdata =  JSON.parse (Base64.decode64(jsmsg["data"]["data"]))
        p jsdata["amount"]
        if jsdata["amount"].to_f > 0
          p "The Bot got coins:" + jsdata["amount"]
          transInfo = MixinBot.api.create_transfer(MixinBot.api.encrypt_pin(yaml_hash["MIXIN_PIN_CODE"]),
                                            {
                                              asset_id: jsdata["asset_id"],
                                              opponent_id: jsdata["opponent_id"],
                                              amount: jsdata["amount"],
                                              trace_id: SecureRandom.uuid,
                                              memo: "from ruby"
                                            })
           p transInfo
        end
      end
    end
  end
  ws.on :error do |event|
    p [:error]
  end
  ws.on :close do |event|
    p [:close, event.code, event.reason]
    ws = nil
  end
}

在工程目录下，执行 ruby websocket_mixin_bot.rb

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ruby websocket_mixin_bot.rb

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wenewzha:mixin_labs-ruby-bot wenewzhang$ ruby websocket_mixin_bot.rb
[:open]
[:message]
{"id"=>"1003b2b5-b8e4-4b54-bd03-983c61f64869", "action"=>"LIST_PENDING_MESSAGES"}

如果控制台出现 "LIST_PENDING_MESSAGES"字样, 连接到mixin.one成功了，正在侦听用户发送消息给它!

按帮助来操作,发送消息得到相应的支付提示

1 机器人回复 APP_CARD 支付链接.

2 机器人回复 APP_BUTTON_GROUP 支付链接.

? or help : 显示帮助

点击上面的链接，将会弹出一个窗口，输入你的密码，将支付币给机器人!

Mixin Messenger支持的消息类型

如下图所示，用户点击支付链接，输入密码，支付0.01 EOS给机器人，机器人马上返还给用户！

亲爱的开发者，你也可以从消息控制面板里，点击转帐，直接将币转给机器人！它还是一样的立即返还！

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if jsmsg["data"]["category"] == "SYSTEM_ACCOUNT_SNAPSHOT"
  jsdata =  JSON.parse (Base64.decode64(jsmsg["data"]["data"]))
  p jsdata["amount"]
  if jsdata["amount"].to_f > 0
    p "The Bot got coins:" + jsdata["amount"]
    transInfo = MixinBot.api.create_transfer(MixinBot.api.encrypt_pin(yaml_hash["MIXIN_PIN_CODE"]),
                                      {
                                        asset_id: jsdata["asset_id"],
                                        opponent_id: jsdata["opponent_id"],
                                        amount: jsdata["amount"],
                                        trace_id: SecureRandom.uuid,
                                        memo: "from ruby"
                                      })
     p transInfo
  end
end

如果机器人收到币，

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jsdata["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

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jsdata["amount"]

是一个负数.

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transInfo = MixinBot.api.create_transfer(MixinBot.api.encrypt_pin(yaml_hash["MIXIN_PIN_CODE"]),
                                  {
                                    asset_id: jsdata["asset_id"],
                                    opponent_id: jsdata["opponent_id"],
                                    amount: jsdata["amount"],
                                    trace_id: SecureRandom.uuid,
                                    memo: "from ruby"
                                  })
 p transInfo

最后一步，调用MixinSDK将币还给用户！

完整的代码在这儿 here