feat: support langchain powered by flowise

Bump requests from 2.28.2 to 2.31.0

Bumps [requests](https://github.com/psf/requests) from 2.28.2 to 2.31.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.28.2...v2.31.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.env.example

@@ -13,4 +13,6 @@ BING_AUTH_COOKIE="xxxxxxxxxxxxxxxxxxx" # _U cookie, Optional, for Bing Image Cre
 MARKDOWN_FORMATTED="true" # Optional
 OUTPUT_FOUR_IMAGES="true" # Optional
 IMPORT_KEYS_PATH="element-keys.txt" # Optional
-IMPORT_KEYS_PASSWORD="xxxxxxx" # Optional
+IMPORT_KEYS_PASSWORD="xxxxxxx" # Optional
+FLOWISE_API_URL="http://localhost:3000/api/v1/prediction/xxxx" # Optional
+FLOWISE_API_KEY="xxxxxxxxxxxxxxxxxxxxxxx" # Optional

README.md

@@ -1,13 +1,13 @@
 ## Introduction
 
-This is a simple Matrix bot that uses OpenAI's GPT API and Bing AI and Google Bard to generate responses to user inputs. The bot responds to five types of prompts: `!gpt`, `!chat` and `!bing` and `!pic` and `!bard` depending on the first word of the prompt.
+This is a simple Matrix bot that uses OpenAI's GPT API and Bing AI and Google Bard to generate responses to user inputs. The bot responds to six types of prompts: `!gpt`, `!chat` and `!bing` and `!pic` and `!bard` and `!lc` depending on the first word of the prompt.
 ![Bing](https://user-images.githubusercontent.com/32976627/231073146-3e380217-a6a2-413d-9203-ab36965b909d.png)
 ![image](https://user-images.githubusercontent.com/32976627/232036790-e830145c-914e-40be-b3e6-c02cba93329c.png)
 ![ChatGPT](https://i.imgur.com/kK4rnPf.jpeg)
 
 ## Feature
 
-1. Support Openai ChatGPT and Bing AI and Google Bard(US only at the moment)
+1. Support Openai ChatGPT and Bing AI and Google Bard and Langchain([Flowise](https://github.com/FlowiseAI/Flowise))
 2. Support Bing Image Creator
 3. Support E2E Encrypted Room
 4. Colorful code blocks
@@ -26,7 +26,7 @@ sudo docker compose up -d
 
 <hr>
 Normal Method:<br>
-system dependece: `libolm-dev`
+system dependece: <code>libolm-dev</code>
 
 1. Clone the repository and create virtual environment:
 
@@ -99,7 +99,10 @@ To interact with the bot, simply send a message to the bot in the Matrix room wi
 ```
 !bard Building a website can be done in 10 simple steps
 ```
-
+- `!lc` To chat using langchain api endpoint
+```
+!lc 人生如音乐，欢乐且自由
+```
 - `!pic` To generate an image from Microsoft Bing
 
 ```

bot.py

@@ -21,6 +21,7 @@
 from send_message import send_room_message
 from v3 import Chatbot
 from bard import Bardbot
+from flowise import flowise_query
 
 logger = getlogger()
 
@@ -45,6 +46,8 @@ def __init__(
         output_four_images: Union[bool, None] = False,
         import_keys_path: Optional[str] = None,
         import_keys_password: Optional[str] = None,
+        flowise_api_url: Optional[str] = None,
+        flowise_api_key: Optional[str] = None
     ):
         if (homeserver is None or user_id is None
                 or device_id is None):
@@ -66,6 +69,8 @@ def __init__(
         self.chatgpt_api_endpoint = chatgpt_api_endpoint
         self.import_keys_path = import_keys_path
         self.import_keys_password = import_keys_password
+        self.flowise_api_url = flowise_api_url
+        self.flowise_api_key = flowise_api_key
 
         self.session = aiohttp.ClientSession()
 
@@ -124,6 +129,7 @@ def __init__(
         self.bing_prog = re.compile(r"^\s*!bing\s*(.+)$")
         self.bard_prog = re.compile(r"^\s*!bard\s*(.+)$")
         self.pic_prog = re.compile(r"^\s*!pic\s*(.+)$")
+        self.lc_prog = re.compile(r"^\s*!lc\s*(.+)$")
         self.help_prog = re.compile(r"^\s*!help\s*.*$")
 
         # initialize chatbot and chatgpt_api_endpoint
@@ -281,6 +287,24 @@ async def message_callback(self, room: MatrixRoom, event: RoomMessageText) -> No
                         logger.error(e, exc_info=True)
                         await send_room_message(self.client, room_id, reply_message={e})
 
+            # lc command
+            if self.flowise_api_url is not None:
+                m = self.lc_prog.match(content_body)
+                if m:
+                    prompt = m.group(1)
+                    try:
+                        asyncio.create_task(self.lc(
+                            room_id,
+                            reply_to_event_id,
+                            prompt,
+                            sender_id,
+                            raw_user_message
+                        )
+                        )
+                    except Exception as e:
+                        logger.error(e, exc_info=True)
+                        await send_room_message(self.client, room_id, reply_message={e})
+
             # help command
             h = self.help_prog.match(content_body)
             if h:
@@ -598,6 +622,26 @@ async def bard(self, room_id, reply_to_event_id, prompt, sender_id,
         except Exception as e:
             logger.error(e, exc_info=True)
 
+    # !lc command
+    async def lc(self, room_id, reply_to_event_id, prompt, sender_id,
+                raw_user_message) -> None:
+        try:
+            # sending typing state
+            await self.client.room_typing(room_id)
+            if self.flowise_api_key is not None:
+                headers = {'Authorization': f'Bearer {self.flowise_api_key}'}
+                response = await asyncio.to_thread(flowise_query,
+                                               self.flowise_api_url, prompt, headers)
+            else:
+                response = await asyncio.to_thread(flowise_query,
+                                               self.flowise_api_url, prompt)
+            await send_room_message(self.client, room_id, reply_message=response,
+                                    reply_to_event_id="", sender_id=sender_id,
+                                    user_message=raw_user_message,
+                                    markdown_formatted=self.markdown_formatted)
+        except Exception as e:
+            raise Exception(e)
+
     # !pic command
 
     async def pic(self, room_id, prompt):
@@ -629,11 +673,12 @@ async def help(self, room_id):
         try:
             # sending typing state
             await self.client.room_typing(room_id)
-            help_info = "!gpt [content], generate response without context conversation\n" + \
-                        "!chat [content], chat with context conversation\n" + \
-                        "!bing [content], chat with context conversation powered by Bing AI\n" + \
-                        "!bard [content], chat with Google's Bard\n" + \
+            help_info = "!gpt [prompt], generate response without context conversation\n" + \
+                        "!chat [prompt], chat with context conversation\n" + \
+                        "!bing [prompt], chat with context conversation powered by Bing AI\n" + \
+                        "!bard [prompt], chat with Google's Bard\n" + \
                         "!pic [prompt], Image generation by Microsoft Bing\n" + \
+                        "!lc [prompt], chat using langchain api\n" + \
                         "!help, help message"  # noqa: E501
 
             await send_room_message(self.client, room_id, reply_message=help_info)

config.json.sample

@@ -13,5 +13,7 @@
   "markdown_formatted": true,
   "output_four_images": true,
   "import_keys_path": "element-keys.txt",
-  "import_keys_password": "xxxxxxxxx"
+  "import_keys_password": "xxxxxxxxx",
+  "flowise_api_url": "http://localhost:3000/api/v1/prediction/6deb3c89-45bf-4ac4-a0b0-b2d5ef249d21",
+  "flowise_api_key": "U3pe0bbVDWOyoJtsDzFJjRvHKTP3FRjODwuM78exC3A="
 }

flowise.py

@@ -0,0 +1,19 @@
+import requests
+
+def flowise_query(api_url: str, prompt: str, headers: dict = None) -> str:
+    """
+    Sends a query to the Flowise API and returns the response.
+
+    Args:
+        api_url (str): The URL of the Flowise API.
+        prompt (str): The question to ask the API.
+
+    Returns:
+        str: The response from the API.
+    """
+    if headers:
+        response = requests.post(api_url, json={"question": prompt},
+                                 headers=headers, timeout=120)
+    else:
+        response = requests.post(api_url, json={"question": prompt}, timeout=120)
+    return response.text

main.py

@@ -29,6 +29,8 @@ async def main():
                          import_keys_path=config.get('import_keys_path'),
                          import_keys_password=config.get(
                              'import_keys_password'),
+                         flowise_api_url=config.get('flowise_api_url'),
+                         flowise_api_key=config.get('flowise_api_key'),
                          )
         if config.get('import_keys_path') and \
                 config.get('import_keys_password') is not None:
@@ -57,6 +59,8 @@ async def main():
                          import_keys_path=os.environ.get("IMPORT_KEYS_PATH"),
                          import_keys_password=os.environ.get(
                              "IMPORT_KEYS_PASSWORD"),
+                         flowise_api_url=os.environ.get("FLOWISE_API_URL"),
+                         flowise_api_key=os.environ.get("FLOWISE_API_KEY"),
                          )
         if os.environ.get("IMPORT_KEYS_PATH") \
                 and os.environ.get("IMPORT_KEYS_PASSWORD") is not None:

requirements.txt

@@ -39,7 +39,7 @@ python-magic==0.4.27
 python-olm==3.1.3
 python-socks==2.2.0
 regex==2023.3.23
-requests==2.28.2
+requests==2.31.0
 rfc3986==1.5.0
 six==1.16.0
 sniffio==1.3.0