chore: add fetch_translate method to Bridge class

bot/bot_factory.py

@@ -0,0 +1,36 @@
+"""
+channel factory
+"""
+from common import const
+
+
+def create_bot(bot_type):
+    """
+    create a bot_type instance
+    :param bot_type: bot type code
+    :return: bot instance
+    """
+    if bot_type == const.BAIDU:
+        # Baidu Unit对话接口
+        from bot.baidu.baidu_unit_bot import BaiduUnitBot
+
+        return BaiduUnitBot()
+
+    elif bot_type == const.CHATGPT:
+        # ChatGPT 网页端web接口
+        from bot.chatgpt.chat_gpt_bot import ChatGPTBot
+
+        return ChatGPTBot()
+
+    elif bot_type == const.OPEN_AI:
+        # OpenAI 官方对话模型API
+        from bot.openai.open_ai_bot import OpenAIBot
+
+        return OpenAIBot()
+
+    elif bot_type == const.CHATGPTONAZURE:
+        # Azure chatgpt service https://azure.microsoft.com/en-in/products/cognitive-services/openai-service/
+        from bot.chatgpt.chat_gpt_bot import AzureChatGPTBot
+
+        return AzureChatGPTBot()
+    raise RuntimeError