app.py

from langgraph.graph import Graph
from typing import TypedDict

# Define the state type
class State(TypedDict):
    messages: list[str]
    current_step: str

# Create nodes (functions that represent different states)
def collect_info(state: State) -> State:
    return {
        **state,
        "messages": state["messages"] + ["Information collected"],
        "current_step": "process"
    }

def process_info(state: State) -> State:
    return {
        **state,
        "messages": state["messages"] + ["Information processed"],
        "current_step": "end"
    }

# Create the graph
workflow = Graph()

# Add nodes and edges
workflow.add_node("collect", collect_info)
workflow.add_node("process", process_info)
workflow.add_edge("collect", "process")

# Set the entry point and compile
workflow.set_entry_point("collect")
app = workflow.compile()