/**
 * App Navigator
 * Bottom tab navigation with sleek design
 */

import React from 'react';
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import { NavigationContainer } from '@react-navigation/native';
import { StyleSheet, View, Text } from 'react-native';
import { theme } from '../theme';

// Screens
import HomeScreen from '../screens/HomeScreen';
import MessagesScreen from '../screens/MessagesScreen';
import GamesScreen from '../screens/GamesScreen';
import FriendsScreen from '../screens/FriendsScreen';
import ProfileScreen from '../screens/ProfileScreen';

const Tab = createBottomTabNavigator();

const TabIcon = ({ focused, emoji }: { focused: boolean; emoji: string }) => (
  <View style={[styles.tabIcon, focused && styles.tabIconActive]}>
    <Text style={styles.tabEmoji}>{emoji}</Text>
  </View>
);

export default function AppNavigator() {
  return (
    <NavigationContainer
      theme={{
        dark: true,
        colors: {
          primary: theme.colors.primary,
          background: theme.colors.background,
          card: theme.colors.background,
          text: theme.colors.text,
          border: theme.colors.gray800,
          notification: theme.colors.primary,
        },
      }}
    >
      <Tab.Navigator
        screenOptions={{
          headerShown: false,
          tabBarStyle: styles.tabBar,
          tabBarActiveTintColor: theme.colors.primary,
          tabBarInactiveTintColor: theme.colors.gray600,
          tabBarLabelStyle: styles.tabLabel,
        }}
      >
        <Tab.Screen
          name="Home"
          component={HomeScreen}
          options={{
            tabBarIcon: ({ focused }) => <TabIcon focused={focused} emoji="🏠" />,
          }}
        />
        <Tab.Screen
          name="Messages"
          component={MessagesScreen}
          options={{
            tabBarIcon: ({ focused }) => <TabIcon focused={focused} emoji="💬" />,
            tabBarBadge: 3, // Unread count
          }}
        />
        <Tab.Screen
          name="Games"
          component={GamesScreen}
          options={{
            tabBarIcon: ({ focused }) => <TabIcon focused={focused} emoji="🎮" />,
          }}
        />
        <Tab.Screen
          name="Friends"
          component={FriendsScreen}
          options={{
            tabBarIcon: ({ focused }) => <TabIcon focused={focused} emoji="👥" />,
          }}
        />
        <Tab.Screen
          name="Profile"
          component={ProfileScreen}
          options={{
            tabBarIcon: ({ focused }) => <TabIcon focused={focused} emoji="👤" />,
          }}
        />
      </Tab.Navigator>
    </NavigationContainer>
  );
}

const styles = StyleSheet.create({
  tabBar: {
    backgroundColor: theme.colors.background,
    borderTopWidth: 1,
    borderTopColor: theme.colors.gray900,
    height: theme.layout.tabBarHeight,
    paddingBottom: 8,
    paddingTop: 8,
  },
  tabLabel: {
    fontSize: theme.typography.fontSize.xs,
    fontWeight: theme.typography.fontWeight.medium,
  },
  tabIcon: {
    width: 40,
    height: 40,
    borderRadius: theme.borderRadius.md,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: 'transparent',
  },
  tabIconActive: {
    backgroundColor: theme.colors.backgroundTertiary,
    ...theme.shadows.glow,
  },
  tabEmoji: {
    fontSize: 24,
  },
});