import {useEffect, useState} from "react";
import {ActivityIndicator, View} from "react-native";
import {NavigationContainer} from "@react-navigation/native";
import {createNativeStackNavigator} from "@react-navigation/native-stack";
import {SafeAreaProvider} from "react-native-safe-area-context";
import LoginScreen from "./src/components/screens/LoginScreen";
import RegisterScreen from "./src/components/screens/RegisterScreen";
import TeamScreen from "./src/components/screens/TeamScreen";
import MapScreen from "./src/components/screens/MapScreen";
import LeaderboardScreen from "./src/components/screens/LeaderboardScreen";
import GameSettingsScreen from "./src/components/screens/GameSettingsScreen";
import DepartmentSettingsScreen from "./src/components/screens/DepartmentSettingsScreen";
import PlayersScreen from "./src/components/screens/PlayersScreen";
import ExpandedMapScreen from "./src/components/screens/ExpandedMapScreen";
import {loadSession} from "./src/hooks/SessionStore";

const RootStack = createNativeStackNavigator();
const AuthStackNav = createNativeStackNavigator();
const GameStackNav = createNativeStackNavigator();
const AdminStackNav = createNativeStackNavigator();

const screenOptions = {
    headerShown: false,
    contentStyle: {backgroundColor: '#ffffff'},
};

const AuthStack = () => (
    <AuthStackNav.Navigator screenOptions={{...screenOptions, keyboardHandlingEnabled: false}}>
        <AuthStackNav.Screen name="LoginScreen" component={LoginScreen}/>
        <AuthStackNav.Screen name="RegisterScreen" component={RegisterScreen}/>
    </AuthStackNav.Navigator>
);

const GameStack = () => (
    <GameStackNav.Navigator screenOptions={screenOptions}>
        <GameStackNav.Screen name="MapScreen" component={MapScreen}/>
        <GameStackNav.Screen name="TeamScreen" component={TeamScreen}/>
        <GameStackNav.Screen name="LeaderboardScreen" component={LeaderboardScreen}/>
        <GameStackNav.Screen name="PlayersScreen" component={PlayersScreen}/>
        <GameStackNav.Screen name="ExpandedMapScreen" component={ExpandedMapScreen}/>
    </GameStackNav.Navigator>
);

const AdminStack = () => (
    <AdminStackNav.Navigator screenOptions={screenOptions}>
        <AdminStackNav.Screen name="GameSettingsScreen" component={GameSettingsScreen}/>
        <AdminStackNav.Screen name="DepartmentSettingsScreen" component={DepartmentSettingsScreen}/>
        <AdminStackNav.Screen name="MapScreen" component={MapScreen}/>
        <AdminStackNav.Screen name="LeaderboardScreen" component={LeaderboardScreen}/>
        <AdminStackNav.Screen name="PlayersScreen" component={PlayersScreen}/>
        <AdminStackNav.Screen name="ExpandedMapScreen" component={ExpandedMapScreen}/>
        <AdminStackNav.Screen name="TeamScreen" component={TeamScreen}/>
    </AdminStackNav.Navigator>
);

export const App = () => {
    // Load persisted session from AsyncStorage before choosing initial route
    const [loading, setLoading] = useState(true);
    const [initialRoute, setInitialRoute] = useState('Auth');

    useEffect(() => {
        loadSession().then((session) => {
            if (session.currentUid) {
                setInitialRoute(session.isAcceptedAdmin ? 'Admin' : 'Game');
            }
            setLoading(false);
        });
    }, []);

    if (loading) {
        return (
            <View style={{flex: 1, justifyContent: 'center', alignItems: 'center', backgroundColor: '#fff'}}>
                <ActivityIndicator size="large" />
            </View>
        );
    }

    return (
        <SafeAreaProvider>
            <NavigationContainer>
                <RootStack.Navigator initialRouteName={initialRoute} screenOptions={screenOptions}>
                    <RootStack.Screen name="Auth" component={AuthStack}/>
                    <RootStack.Screen name="Game" component={GameStack}/>
                    <RootStack.Screen name="Admin" component={AdminStack}/>
                </RootStack.Navigator>
            </NavigationContainer>
        </SafeAreaProvider>
    );
};

export default App;