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app.py

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+import os
+import streamlit as st
+from typing import List, Tuple
+import json
+import uvicorn
+from dotenv import load_dotenv
+load_dotenv()
+from fastapi import FastAPI
+from langchain.agents import AgentExecutor
+from langchain.agents.format_scratchpad import format_to_openai_function_messages
+from langchain.agents.output_parsers import OpenAIFunctionsAgentOutputParser
+from langchain.callbacks import FinalStreamingStdOutCallbackHandler
+from langchain.chat_models import ChatOpenAI
+from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
+from langchain.pydantic_v1 import BaseModel, Field
+from langchain.schema.messages import AIMessage, HumanMessage
+from langchain.tools.render import format_tool_to_openai_function
+from langchain_community.utilities.google_serper import GoogleSerperAPIWrapper
+from langchain_core.runnables import ConfigurableField
+from langchain_core.tools import Tool
+from langserve import add_routes
+from langchain.prompts import PromptTemplate
+import requests
+from langchain.embeddings.openai import OpenAIEmbeddings
+from langchain.vectorstores import Qdrant
+from langchain.chains import RetrievalQA
+from langchain.agents import Tool, Agent, AgentType
+from langchain.agents import AgentExecutor
+from langchain_core.tools import Tool
+from langchain_openai import ChatOpenAI
+from langchain_openai import AzureChatOpenAI
+from langchain_community.document_loaders import JSONLoader
+
+embeddings = OpenAIEmbeddings()
+llm_1 = AzureChatOpenAI(openai_api_version=os.environ.get("AZURE_OPENAI_VERSION", "2023-07-01-preview"),
+        azure_deployment=os.environ.get("AZURE_OPENAI_DEPLOYMENT", "gpt4chat"),
+        azure_endpoint=os.environ.get("AZURE_OPENAI_ENDPOINT", "https://gpt-4-trails.openai.azure.com/"),
+        api_key=os.environ.get("AZURE_OPENAI_KEY"))
+
+llm = ChatOpenAI(temperature=0.2,
+                 model="gpt-3.5-turbo-0125",
+                 streaming=True,
+                 callbacks=[FinalStreamingStdOutCallbackHandler()]).configurable_fields(
+    temperature=ConfigurableField(
+        id="llm_temperature",
+        name="LLM Temperature",
+        description="The temperature of the LLM"))
+assistant_system_message = """You are a helpful assistant. \
+Use tools (only if necessary) to best answer the users questions."""
+
+prompt = ChatPromptTemplate.from_messages(
+    [
+        ("system", assistant_system_message),
+        MessagesPlaceholder(variable_name="chat_history"),
+        ("user", "{input}"),
+        MessagesPlaceholder(variable_name="agent_scratchpad"),
+    ]
+)
+
+# Define the API call function for Ares API
+
+def api_call(text):
+  url = "https://api-ares.traversaal.ai/live/predict"
+
+  payload = { "query": [text]}
+  headers = {
+    "x-api-key": "ares_a0866ad7d71d2e895c5e05dce656704a9e29ad37860912ad6a45a4e3e6c399b5",
+    "content-type": "application/json"
+  }
+
+  response = requests.post(url, json=payload, headers=headers)
+
+  # here we will use the llm to summarize the response received from the ares api
+  response_data = response.json()
+  #print(response_data)
+  try:
+    response_text = response_data['data']['response_text']
+    web_urls = response_data['data']['web_url']
+    # Continue processing the data...
+  except KeyError:
+    print("Error: Unexpected response from the API. Please try again or contact the api owner.")
+    # Optionally, you can log the error or perform other error handling actions.
+  
+
+  if len(response_text) > 10000:
+    response_text = response_text[:8000]
+    prompt = f"Summarize the following text in 500-100 0 words and jsut summarize what you see and do not add anythhing else: {response_text}"
+    summary = llm_1.invoke(prompt)
+    print(summary)
+  else:
+    summary = response_text
+
+  result = "{} My list is: {}".format(response_text, web_urls)
+
+# Convert the result to a string
+  result_str = str(result)
+
+  return result_str
+
+
+
+def metadata_func(record: str, metadata: dict) -> dict:
+    lines = record.split('\n')
+    locality_line = lines[10]
+    price_range_line = lines[12]
+    locality = locality_line.split(': ')[1]
+    price_range = price_range_line.split(': ')[1]
+    metadata["location"] = locality
+    metadata["price_range"] = price_range
+
+    return metadata
+
+# Instantiate the JSONLoader with the metadata_func
+jq_schema = '.parser[] | to_entries | map("\(.key): \(.value)") | join("\n")'
+loader = JSONLoader(
+    jq_schema=jq_schema,
+    file_path='data.json',
+    metadata_func=metadata_func,
+)
+
+# Load the JSON file and extract metadata
+documents = loader.load()
+
+    
+from langchain.vectorstores import FAISS
+def get_vectorstore(text_chunks):
+    # Check if the FAISS index file already exists
+    if os.path.exists("faiss_index"):
+        # Load the existing FAISS index
+        vectorstore = FAISS.load_local("faiss_index")
+        print("Loaded existing FAISS index.")
+    else:
+        # Create a new FAISS index
+        embeddings = OpenAIEmbeddings()
+        vectorstore = FAISS.from_documents(documents=text_chunks, embedding=embeddings)
+        # Save the new FAISS index locally
+        vectorstore.save_local("faiss_index")
+        print("Created and saved new FAISS index.")
+    return vectorstore
+
+#docs = new_db.similarity_search(query)
+
+vector = get_vectorstore(documents)
+
+template = """
+
+context:- I have low budget what is the best hotel in Instanbul?
+anser:- The other hotels in instanbul are costly and are not in your budget. so the best hotel in instanbul for you is hotel is xyz."
+
+Don’t give information not mentioned in the CONTEXT INFORMATION. 
+The system should take into account various factors such as location, amenities, user reviews, and other relevant criteria to 
+generate informative and personalized explanations.
+{context} 
+Question: {question}
+Answer:"""
+
+def search():
+    #llm = ChatOpenAI(model="gpt-3.5-turbo-1106", temperature=0)
+    vector = vector
+    prompt = PromptTemplate(template=template, input_variables=["context","question"])
+    chain_type_kwargs = {"prompt": prompt}
+    return RetrievalQA.from_chain_type(
+    llm=llm,
+    chain_type="stuff",
+    retriever=vector.as_retriever(),
+    chain_type_kwargs=chain_type_kwargs,
+)
+
+# Initialize LangChain tools
+
+
+api_tool = Tool(name="Ares_API",
+                func=api_call,
+                description="Integration with Traversaal AI Ares API for real-time internet searches."
+               )
+
+chain_rag_tool = Tool(name="RAG_Chain",
+                      func=search,
+                      description="RAG chain for question answering."
+                     )
+
+app = FastAPI(
+    title='Example',
+)
+
+tools = [chain_rag_tool, api_tool]
+llm_with_tools = llm.bind(functions=[format_tool_to_openai_function(t) for t in tools])
+
+
+def _format_chat_history(chat_history: List[Tuple[str, str]]):
+    buffer = []
+    for human, ai in chat_history:
+        buffer.append(HumanMessage(content=human))
+        buffer.append(AIMessage(content=ai))
+    return buffer
+
+
+agent = (
+    {
+        "input": lambda x: x["input"],
+        "chat_history": lambda x: _format_chat_history(x["chat_history"]),
+        "agent_scratchpad": lambda x: format_to_openai_function_messages(
+            x["intermediate_steps"]
+        ),
+    }
+    | prompt
+    | llm_with_tools
+    | OpenAIFunctionsAgentOutputParser()
+)
+
+
+class AgentInput(BaseModel):
+    input: str
+    chat_history: List[Tuple[str, str]] = Field(
+        ..., extra={"widget": {"type": "chat", "input": "input", "output": "output"}}
+    )
+
+
+agent_executor = AgentExecutor(agent=agent, tools=tools, verbose=True).with_types(
+    input_type=AgentInput
+)
+
+
+def get_response(user_input):
+    response = agent_executor.invoke({"input":user_input, "chat_history": _format_chat_history([])})
+    return response
+
+
+def main():
+    st.title("Travle Assistant Chatbot")
+    st.write("Welcome to the Hotel Assistant Chatbot!")
+    user_input = st.text_input("User Input:")
+    
+    if st.button("Submit"):
+        response = get_response(user_input)
+        st.text_area("Chatbot Response:", value=response)
+    
+    if st.button("Exit"):
+        st.stop()
+
+if __name__ == "__main__":
+    main()