app.py

# Install dependencies
# pip install gradio langgraph

import gradio as gr
import random
from typing import Literal
from typing_extensions import TypedDict
from langgraph.graph import StateGraph, START, END

# Define the game state
global_score = {"total": 0}
game_history = []  # Track game rounds

class State(TypedDict):
    bet: int
    result: str
    score: int
    roll: int

# Nodes for LangGraph
def roll_node(state):
    state["roll"] = random.randint(1, 6) + random.randint(1, 6)
    return state

def input_node(state):
    return state

def success_node(state):
    global_score["total"] += 10
    state["result"] = f"🎉 You win! +$10 (Roll: {state['roll']})"
    state["score"] = global_score["total"]
    return state

def failure_node(state):
    global_score["total"] -= 5
    state["result"] = f"😞 You lose! -$5 (Roll: {state['roll']})"
    state["score"] = global_score["total"]
    return state

def determine_outcome(state) -> Literal["node_2", "node_3"]:
    return "node_2" if state["roll"] <= state["bet"] else "node_3"

# Build LangGraph
builder = StateGraph(State)
builder.add_node("roll_node", roll_node)
builder.add_node("node_1", input_node)
builder.add_node("node_2", success_node)
builder.add_node("node_3", failure_node)

builder.add_edge(START, "roll_node")
builder.add_edge("roll_node", "node_1")
builder.add_conditional_edges("node_1", determine_outcome)
builder.add_edge("node_2", END)
builder.add_edge("node_3", END)

graph = builder.compile()

# Gradio UI function
def play_game(bet: int):
    if bet < 1 or bet > 12:
        return "Please enter a value between 1 and 12.", global_score["total"], []
    result = graph.invoke({"bet": bet, "result": "", "score": global_score["total"]})
    game_history.append({"Bet": bet, "Roll": result["roll"], "Result": result["result"], "Score": result["score"]})
    history_table_data = [[g["Bet"], g["Roll"], g["Result"], g["Score"]] for g in game_history[::-1]]
    return result["result"], result["score"], history_table_data

# Gradio Interface
with gr.Blocks() as demo:
    gr.Markdown("## 🎲 Dice Bet Game with LangGraph")
    with gr.Row():
        bet_input = gr.Number(label="Your Bet (1-12)", value=7, precision=0)
        play_button = gr.Button("🎲 Roll Dice")
    with gr.Row():
        result_output = gr.Textbox(label="Result")
        score_output = gr.Number(label="Total Winnings", value=0, precision=0, interactive=False)
    history_table = gr.Dataframe(headers=["Bet", "Roll", "Result", "Score"], label="Game History", interactive=False)

    play_button.click(play_game, inputs=[bet_input], outputs=[result_output, score_output, history_table])

if __name__ == "__main__":
    demo.launch()