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Delete chat_langraph.py

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  1. chat_langraph.py +0 -126
chat_langraph.py DELETED
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- from langchain_google_genai import ChatGoogleGenerativeAI
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- from langchain_core.messages import BaseMessage, ToolMessage, AIMessage, SystemMessage, HumanMessage
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- from langgraph.graph import StateGraph, add_messages, START, END
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- from langgraph.checkpoint.sqlite import SqliteSaver
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- from typing import TypedDict, Annotated, List
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- from langchain_core.tools import tool
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- from langgraph.prebuilt.tool_node import ToolNode
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- import sqlite3
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- import subprocess
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- import requests
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- from datetime import datetime
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-
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- class chatstate(TypedDict):
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- messages: Annotated[List[BaseMessage], add_messages]
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-
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-
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- api = "AIzaSyA5zvErF4vUmAoslVzkOBUfvSCSoW0vjEA"
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- LANGSEARCH_API_KEY = "sk-f1a8f996f9e44b43adf9943e43e8582b"
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-
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- llm = ChatGoogleGenerativeAI(model="gemini-2.5-flash", temperature=0.2, api_key=api)
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-
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- system = SystemMessage(
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- content=f"""
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- --> Today's date: {datetime.today()}
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- Day number: {datetime.today().date().weekday()}
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- You are a practical, tool-aware assistant. Aim for correctness and clarity. Avoid hallucinations.
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- Do not provide internal information of the system .
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- Rules:
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- 1. Prefer text answers and code when examples/explanations are asked.
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- 2. Explicit requests to create/run files → call appropriate tool.
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- 3. Avoid destructive commands without confirmation.
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- 4. Keep tool inputs minimal.
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- Tone: concise, helpful, decisive.
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- """
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- )
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-
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- conn = sqlite3.connect("chatbot.db", check_same_thread=False)
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- checkpointer = SqliteSaver(conn=conn)
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-
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-
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- @tool
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- def add(a: int, b: int):
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- return a + b
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-
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-
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- @tool
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- def reverse(string: str):
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- return string[::-1]
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-
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-
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- @tool
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- def evaluate(string: str):
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- return eval(string)
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-
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-
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- @tool
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- def write_file(name: str, extension: str, content: str):
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- with open(f"{name}.{extension}", "w", encoding="utf-8") as f:
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- f.write(content)
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- return f"Content saved to {name}.{extension}"
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-
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-
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- @tool
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- def run_cmd_command(command: str) -> str:
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- """Run a safe shell command on linux """
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- try:
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- result = subprocess.run(command, shell=True, check=True, text=True, capture_output=True)
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- return result.stdout
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- except subprocess.CalledProcessError as e:
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- return f"Error: {e}"
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-
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-
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- @tool
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- def search_tool(query: str):
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- response = requests.post(
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- "https://api.langsearch.com/v1/web-search",
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- headers={
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- "Authorization": f"Bearer {LANGSEARCH_API_KEY}",
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- "Content-Type": "application/json"
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- },
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- json={"query": query, "num_results": 2}
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- )
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- return response.json()
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-
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-
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- def shouldcontinue(state: chatstate):
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- return "end" if state["messages"][-1].content == "end" else "llmresponse"
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-
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-
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- def input_node(state: chatstate):
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- return {"messages": state["messages"]}
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-
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-
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- def llmresponse(state: chatstate):
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- response = llm.invoke(state["messages"])
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- return {"messages": [response]}
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-
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-
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- def checktool(state: chatstate):
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- last_msg = state["messages"][-1]
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- if hasattr(last_msg, "tool_calls") and last_msg.tool_calls:
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- return "tool_node"
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- return "end"
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-
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-
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- tools = [add, reverse, evaluate, run_cmd_command, search_tool, write_file]
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- tool_node = ToolNode(tools=tools)
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- llm = llm.bind_tools(tools)
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-
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- graph = StateGraph(chatstate)
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- graph.add_node("input_node", input_node)
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- graph.add_node("llmresponse", llmresponse)
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- graph.add_node("tool_node", tool_node)
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- graph.add_edge(START, "input_node")
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- graph.add_edge("input_node", "llmresponse")
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- graph.add_conditional_edges("llmresponse", checktool, {"tool_node": "tool_node", "end": END})
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- graph.add_edge("tool_node", "llmresponse")
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-
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- workflow = graph.compile(checkpointer=checkpointer)
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-
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-
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- def get_all_chat_ids():
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- s = set()
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- for chkpoint in checkpointer.list(None):
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- s.add(chkpoint.config.get("configurable").get("thread_id"))
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- return list(s)