import { Colors } from "@/constants/Colors"; // Import Colors
import { Images } from "@/constants/images";
import { Image } from "expo-image";
import { usePathname, useRouter, useSegments } from "expo-router";
import React from "react";
import {
    Dimensions,
    StyleSheet,
    Text,
    TouchableOpacity,
    View,
} from "react-native";
import { useSafeAreaInsets } from "react-native-safe-area-context";

const { width: SCREEN_WIDTH } = Dimensions.get("window");

const tabList = [
  {
    name: "大厅", // Was 首页
    route: "/",
    img: Images.tabs.home,
    active: Images.tabs.homeActive,
  },
  {
    name: "矩阵", // Was 开箱
    route: "/box",
    img: Images.tabs.box,
    active: Images.tabs.boxActive,
  },
  {
    name: "次元", // Was 福利
    route: "/dimension",
    img: Images.tabs.welfare,
    active: Images.tabs.welfareActive,
  },
  {
    name: "档案", // Was 我的
    route: "/mine",
    img: Images.tabs.mine,
    active: Images.tabs.mineActive,
  },
];

export function CustomTabBar() {
  const router = useRouter();
  const segments = useSegments();
  const pathname = usePathname();
  const insets = useSafeAreaInsets();

  const getTabIndex = () => {
    // Check Box
    if (segments[1] === "box" || pathname?.startsWith("/box")) return 1;
    // Check Dimension (formerly Welfare)
    if (
      (segments[1] as string) === "dimension" ||
      pathname?.startsWith("/dimension")
    )
      return 2;
    // Check Mine
    if (segments[1] === "mine" || pathname?.startsWith("/mine")) return 3;

    // Check Home (Explicit)
    if (
      (segments[1] as string) === "index" ||
      pathname === "/" ||
      pathname === "/index"
    )
      return 0;

    return -1;
  };

  const [currentIndex, setCurrentIndex] = React.useState(() => {
    const idx = getTabIndex();
    return idx === -1 ? 0 : idx;
  });

  React.useEffect(() => {
    const idx = getTabIndex();
    if (idx !== -1) {
      setCurrentIndex(idx);
    }
  }, [segments, pathname]);

  const handlePress = (index: number) => {
    const route = tabList[index].route;
    router.replace(route as any);
  };

  return (
    <View style={styles.wrapper}>
      {/* Replaced ImageBackground with View for Cyberpunk style */}
      <View style={styles.container}>
        <View style={styles.center}>
          {tabList.map((item, index) => {
            const isActive = currentIndex === index;
            return (
              <TouchableOpacity
                key={index}
                style={styles.item}
                activeOpacity={0.8}
                onPress={() => handlePress(index)}
              >
                <View
                  style={[
                    styles.iconContainer,
                    isActive && styles.activeIconContainer,
                  ]}
                >
                  <Image
                    source={isActive ? item.active : item.img}
                    style={styles.icon}
                    contentFit="contain"
                  />
                </View>
                <Text
                  style={[
                    styles.label,
                    { color: isActive ? Colors.neonBlue : Colors.textTertiary },
                  ]}
                >
                  {item.name}
                </Text>
              </TouchableOpacity>
            );
          })}
        </View>
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  wrapper: {
    position: "absolute",
    bottom: 0,
    left: 0,
    right: 0,
    zIndex: 999,
  },
  container: {
    width: SCREEN_WIDTH,
    height: 85, // Slightly taller for labels
    backgroundColor: Colors.darkBg,
    borderTopWidth: 1,
    borderTopColor: Colors.neonBlue,
    borderTopLeftRadius: 20,
    borderTopRightRadius: 20,
    // Neon Glow
    shadowColor: Colors.neonBlue,
    shadowOffset: { width: 0, height: -2 },
    shadowOpacity: 0.3,
    shadowRadius: 10,
    elevation: 10,
    paddingBottom: 20, // For home indicator
  },
  center: {
    flex: 1,
    flexDirection: "row",
    alignItems: "center",
  },
  item: {
    flex: 1,
    justifyContent: "center",
    alignItems: "center",
    paddingTop: 10,
  },
  iconContainer: {
    width: 28,
    height: 28,
    marginBottom: 4,
    justifyContent: "center",
    alignItems: "center",
  },
  activeIconContainer: {
    // Optional: Add glow behind active icon
  },
  icon: {
    width: "100%",
    height: "100%",
  },
  label: {
    fontSize: 10,
    fontWeight: "bold",
  },
});