import React, { useState, useEffect } from "react";
import ChatPanel from "./components/ChatPanel";
import ChatBox from "./components/ChatBox";
import Header from "./components/Header";
import GoogleLoginPage from "./pages/GoogleLoginPage";
import { BrowserRouter as Router, Routes, Route, Navigate } from "react-router-dom";


const App = () => {
  const [threads, setThreads] = useState([]);
  const [activeThread, setActiveThread] = useState(null);
  const [user, setUser] = useState(null);

  useEffect(() => {
    // Check if user is already logged in
    const storedUser = localStorage.getItem("user");
    if (storedUser) {
      setUser(JSON.parse(storedUser));
    }
  }, []);

  const createNewThread = () => {
    const newThreadId = `thread-${Date.now()}`;
    setThreads([...threads, newThreadId]);
    setActiveThread(newThreadId);
  };

  const handleLogout = () => {
    setUser(null);
    localStorage.removeItem("user");
  };

  return (
    <Router>
      <div
        style={{
          height: "100vh",
          display: "flex",
          flexDirection: "column",
          backgroundColor: "#1e1e1e", // Dark background
          color: "#f5f5f5", // Light text
        }}
      >
        {user && <Header user={user} onLogout={handleLogout} />}
        <Routes>
          <Route
            path="/login"
            element={<GoogleLoginPage setUser={setUser} />}
          />
          <Route
            path="/"
            element={
              user ? (
                <div style={{ display: "flex", flex: 1 }}>
                  <ChatPanel
                    threads={threads}
                    activeThread={activeThread}
                    setActiveThread={setActiveThread}
                    createNewThread={createNewThread}
                  />
                  {activeThread && <ChatBox activeThread={activeThread} />}
                </div>
              ) : (
                <Navigate to="/login" />
              )
            }
          />
        </Routes>
      </div>
    </Router>
  );
};

export default App;