import { Barrage } from "@/components/Barrage";
import { CouponModal } from "@/components/CouponModal";
import { Colors } from "@/constants/Colors";
import { Images } from "@/constants/images";
import { CouponItem, getNewbieGiftBagInfo, listValidCoupon } from "@/services/activity";
import { getFeedbackList, getPoolList, PoolItem } from "@/services/award";
import { getToken } from "@/services/http";
import { Image } from "expo-image";
import { useRouter } from "expo-router";
import React, { useCallback, useEffect, useMemo, useState } from "react";
import {
    ActivityIndicator,
    Dimensions,
    FlatList,
    RefreshControl,
    StatusBar,
    StyleSheet,
    Text,
    TextInput,
    TouchableOpacity,
    View,
} from "react-native";
import { useSafeAreaInsets } from "react-native-safe-area-context";

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

const typeList = [
  { label: "全部", value: "", type: 0 },
  { label: "高保赏", value: "UNLIMITED", type: 2 },
  { label: "高爆赏", value: "UNLIMITED", type: 1 },
  { label: "擂台赏", value: "YFS_PRO", type: 7 },
  { label: "一番赏", value: "YFS_PRO", type: 0 },
];

interface BarrageItem {
  id: string;
  content: string;
  nickname?: string;
  avatar: string;
  poolName?: string;
  type?: string;
  text?: string;
  poolId?: string;
}

// Static Header Component
const StaticHeader = React.memo(
  ({ barrageList }: { barrageList: BarrageItem[] }) => (
    <View>
      <View style={{ height: 60 }} />

      {/* Featured Banner Area */}
      <View style={styles.bannerContainer}>
        {/* Replace image with a styled cyber container for now */}
        <View style={styles.cyberBanner}>
          <Text style={styles.bannerTitle}>MATRIX</Text>
          <Text style={styles.bannerSubtitle}>SUPPLY CRATE</Text>
          {/* Visual tech lines */}
          <View style={styles.techLine1} />
          <View style={styles.techLine2} />
        </View>
      </View>

      {/* Barrage Area */}
      {barrageList && barrageList.length > 0 && (
        <View style={styles.barrageSection}>
          <Barrage
            data={barrageList.slice(0, Math.ceil(barrageList.length / 2))}
          />
          <View style={{ height: 8 }} />
          <Barrage
            data={barrageList.slice(Math.ceil(barrageList.length / 2))}
            speed={35}
          />
        </View>
      )}
    </View>
  ),
);

// Type Selector Component
const TypeSelector = React.memo(
  ({
    typeIndex,
    priceSort,
    onTypeChange,
    onSortChange,
  }: {
    typeIndex: number;
    priceSort: number;
    onTypeChange: (index: number) => void;
    onSortChange: () => void;
  }) => (
    <View style={styles.typeSection}>
      <View style={styles.typeListContainer}>
        <FlatList
          horizontal
          showsHorizontalScrollIndicator={false}
          data={typeList}
          keyExtractor={(_, index) => index.toString()}
          renderItem={({ item, index }) => {
            const isActive = typeIndex === index;
            return (
              <TouchableOpacity
                style={[styles.typeItem, isActive && styles.typeItemActive]}
                onPress={() => onTypeChange(index)}
                activeOpacity={0.7}
              >
                <Text
                  style={[styles.typeText, isActive && styles.typeTextActive]}
                >
                  {item.label}
                </Text>
              </TouchableOpacity>
            );
          }}
          contentContainerStyle={styles.typeListContent}
        />
      </View>
      <TouchableOpacity
        style={styles.sortBtn}
        onPress={onSortChange}
        activeOpacity={0.7}
      >
        <Text style={styles.sortBtnText}>
          价格 {priceSort === 0 ? "-" : priceSort === 1 ? "↑" : "↓"}
        </Text>
      </TouchableOpacity>
    </View>
  ),
);

export default function BoxScreen() {
  const router = useRouter();
  const insets = useSafeAreaInsets();

  const [keyword, setKeyword] = useState("");
  const [typeIndex, setTypeIndex] = useState(0);
  const [priceSort, setPriceSort] = useState(0);
  const [list, setList] = useState<PoolItem[]>([]);
  const [loading, setLoading] = useState(false);
  const [refreshing, setRefreshing] = useState(false);
  const [current, setCurrent] = useState(1);
  const [hasMore, setHasMore] = useState(true);
  const [barrageList, setBarrageList] = useState<BarrageItem[]>([]);
  // 新人优惠券弹窗
  const [couponVisible, setCouponVisible] = useState(false);
  const [couponList, setCouponList] = useState<CouponItem[]>([]);
  const [newPeopleChecked, setNewPeopleChecked] = useState(false);

  // 加载弹幕
  const loadBarrage = useCallback(async () => {
    try {
      const res = await getFeedbackList();
      if (res.data) {
        setBarrageList(res.data);
      }
    } catch (error) {
      console.error("加载弹幕失败:", error);
    }
  }, []);

  // 新人大礼包检测（Vue: initNewPeople）
  const initNewPeople = useCallback(async () => {
    if (newPeopleChecked) return;
    const token = getToken();
    if (!token) return; // 未登录不检测
    try {
      const data = await getNewbieGiftBagInfo();
      if (data) {
        setNewPeopleChecked(true);
        // Vue 原项目只是展示一张海报图片，这里跳过（无具体交互）
      }
    } catch (e) {
      // 静默失败
    }
  }, [newPeopleChecked]);

  // 优惠券检测（Vue: initCoupon）
  const initCoupon = useCallback(async () => {
    const token = getToken();
    if (!token) return;
    try {
      const coupons = await listValidCoupon("LUCK");
      if (coupons && coupons.length > 0) {
        setCouponList(coupons);
        setCouponVisible(true);
      }
    } catch (e) {
      // 静默失败
    }
  }, []);

  const loadData = useCallback(
    async (isRefresh = false) => {
      if (loading) return;

      const page = isRefresh ? 1 : current;
      if (!isRefresh && !hasMore) return;

      setLoading(true);
      try {
        const selectedType = typeList[typeIndex];
        const res = await getPoolList({
          current: page,
          size: 10,
          mode: selectedType.value || undefined,
          type: selectedType.type,
          keyword: keyword || undefined,
          priceSort: priceSort || undefined,
        });

        if (res.success && res.data) {
          const newList = isRefresh ? res.data : [...list, ...res.data];
          setList(newList);
          setCurrent(page + 1);
          setHasMore(newList.length < (res.count || 0));
        }
      } catch (error) {
        console.error("加载奖池列表失败:", error);
      }
      setLoading(false);
      setRefreshing(false);
    },
    [current, hasMore, loading, typeIndex, list, keyword, priceSort],
  );

  useEffect(() => {
    loadData(true);
    loadBarrage();
    initNewPeople();
    initCoupon();
  }, [typeIndex, priceSort]);

  // 执行搜索
  const handleSearch = () => {
    setList([]);
    setCurrent(1);
    setHasMore(true);
    setTimeout(() => {
      loadData(true);
    }, 100);
  };

  const handleRefresh = () => {
    setRefreshing(true);
    loadData(true);
  };

  const handleLoadMore = () => {
    if (!loading && hasMore) {
      loadData(false);
    }
  };

  const handleTypeChange = useCallback((index: number) => {
    setTypeIndex(index);
    setList([]);
    setCurrent(1);
    setHasMore(true);
  }, []);

  const handlePriceSort = useCallback(() => {
    setPriceSort((prev) => (prev + 1) % 3);
  }, []);

  const handleItemPress = useCallback(
    (item: PoolItem) => {
      if (item.status !== undefined && item.status !== 1) return;

      if (item.type === 7) {
        router.push({
          pathname: "/boxInBox",
          params: { poolId: item.id },
        } as any);
      } else if (item.mode === "UNLIMITED") {
        router.push({
          pathname: "/award-detail",
          params: { poolId: item.id },
        } as any);
      } else if (item.mode === "YFS_PRO") {
        router.push({
          pathname: "/award-detail-yfs",
          params: { poolId: item.id },
        } as any);
      } else {
        router.push(`/product/${item.id}` as any);
      }
    },
    [router],
  );

  const renderItem = useCallback(
    ({ item }: { item: PoolItem }) => (
      <TouchableOpacity
        style={styles.itemContainer}
        onPress={() => handleItemPress(item)}
        activeOpacity={0.8}
      >
        <View style={styles.itemCard}>
          <View style={styles.itemImageContainer}>
            <Image
              source={{ uri: item.cover }}
              style={styles.itemImage}
              contentFit="cover"
            />
            {/* Cyber Border Overlay */}
            <View style={styles.itemCyberOverlay} />
          </View>
          <View style={styles.itemInfo}>
            <Text style={styles.itemName} numberOfLines={1}>
              {item.name}
            </Text>
            <Text style={styles.itemPrice}>
              <Text style={styles.priceUnit}>¥</Text>
              {item.price} <Text style={styles.priceStart}>起</Text>
            </Text>
          </View>
        </View>
      </TouchableOpacity>
    ),
    [handleItemPress],
  );

  const ListHeader = useMemo(
    () => (
      <View>
        <StaticHeader barrageList={barrageList} />
        <TypeSelector
          typeIndex={typeIndex}
          priceSort={priceSort}
          onTypeChange={handleTypeChange}
          onSortChange={handlePriceSort}
        />
      </View>
    ),
    [barrageList, typeIndex, priceSort, handleTypeChange, handlePriceSort],
  );

  const renderFooter = useCallback(() => {
    if (!loading) return null;
    return (
      <View style={styles.footer}>
        <ActivityIndicator size="small" color={Colors.neonBlue} />
        <Text style={styles.footerText}>数据传输中...</Text>
      </View>
    );
  }, [loading]);

  const renderEmpty = useCallback(() => {
    if (loading) return null;
    return (
      <View style={styles.empty}>
        <Text style={styles.emptyText}>暂无数据</Text>
      </View>
    );
  }, [loading]);

  return (
    <View style={styles.container}>
      <StatusBar barStyle="light-content" />
      <View style={styles.background}>
        {/* Header */}
        <View style={[styles.header, { paddingTop: insets.top + 10 }]}>
          <View style={styles.logoArea}>
            <Text style={styles.logoText}>
              CYBER<Text style={styles.logoHighlight}>BOX</Text>
            </Text>
          </View>
          <View style={styles.searchBar}>
            <Image
              source={{ uri: Images.home.search }}
              style={styles.searchIcon}
              contentFit="contain"
              tintColor={Colors.neonBlue}
            />
            <TextInput
              style={styles.searchInput}
              value={keyword}
              onChangeText={setKeyword}
              placeholder="搜索奖池"
              placeholderTextColor={Colors.textTertiary}
              returnKeyType="search"
              onSubmitEditing={handleSearch}
            />
          </View>
        </View>

        {/* List */}
        <FlatList
          data={list}
          renderItem={renderItem}
          keyExtractor={(item) => item.id}
          ListHeaderComponent={ListHeader}
          ListFooterComponent={renderFooter}
          ListEmptyComponent={renderEmpty}
          contentContainerStyle={styles.listContent}
          showsVerticalScrollIndicator={false}
          refreshControl={
            <RefreshControl
              refreshing={refreshing}
              onRefresh={handleRefresh}
              tintColor={Colors.neonBlue}
            />
          }
          onEndReached={handleLoadMore}
          onEndReachedThreshold={0.3}
        />

        {/* 新人优惠券弹窗 */}
        <CouponModal
          visible={couponVisible}
          coupons={couponList}
          onClose={() => setCouponVisible(false)}
          onSuccess={() => {
            setCouponList([]);
            loadData(true);
          }}
        />
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: Colors.darkBg,
  },
  background: {
    flex: 1,
    backgroundColor: Colors.darkBg,
  },
  header: {
    position: "relative",
    zIndex: 11,
    flexDirection: "row",
    alignItems: "center",
    paddingHorizontal: 15,
    paddingBottom: 10,
    backgroundColor: Colors.darkBg,
  },
  logoArea: {
    marginRight: 15,
  },
  logoText: {
    color: "#fff",
    fontWeight: "bold",
    fontSize: 18,
    fontStyle: "italic",
  },
  logoHighlight: {
    color: Colors.neonPink,
  },
  searchBar: {
    flex: 1,
    flexDirection: "row",
    alignItems: "center",
    backgroundColor: "rgba(255,255,255,0.05)",
    borderRadius: 20,
    paddingHorizontal: 15,
    height: 32,
    borderWidth: 1,
    borderColor: "rgba(0, 243, 255, 0.3)",
  },
  searchIcon: {
    width: 14,
    height: 14,
    marginRight: 8,
  },
  searchInput: {
    flex: 1,
    color: "#fff",
    fontSize: 12,
    padding: 0,
  },
  // Banner
  bannerContainer: {
    height: 180,
    marginHorizontal: 10,
    marginTop: 10,
    marginBottom: 20,
    borderRadius: 12,
    overflow: "hidden",
  },
  cyberBanner: {
    flex: 1,
    backgroundColor: Colors.darkCard,
    justifyContent: "center",
    alignItems: "center",
    borderWidth: 1,
    borderColor: Colors.neonPink,
    position: "relative",
  },
  bannerTitle: {
    fontSize: 32,
    fontWeight: "bold",
    color: "#fff",
    textShadowColor: Colors.neonPink,
    textShadowRadius: 10,
    fontStyle: "italic",
  },
  bannerSubtitle: {
    fontSize: 14,
    color: Colors.neonBlue,
    letterSpacing: 4,
    marginTop: 5,
  },
  techLine1: {
    position: "absolute",
    top: 10,
    left: 10,
    width: 20,
    height: 2,
    backgroundColor: Colors.neonBlue,
  },
  techLine2: {
    position: "absolute",
    bottom: 10,
    right: 10,
    width: 20,
    height: 2,
    backgroundColor: Colors.neonBlue,
  },
  // Type Selector
  typeSection: {
    flexDirection: "row",
    alignItems: "center",
    paddingHorizontal: 10,
    paddingVertical: 10,
    zIndex: 10,
  },
  typeListContainer: {
    flex: 1,
    marginRight: 5,
  },
  typeListContent: {
    paddingRight: 10,
  },
  typeItem: {
    paddingHorizontal: 12,
    paddingVertical: 6,
    borderRadius: 15,
    backgroundColor: "rgba(255,255,255,0.05)",
    marginRight: 8,
    borderWidth: 1,
    borderColor: "transparent",
  },
  typeItemActive: {
    backgroundColor: "rgba(0, 243, 255, 0.15)",
    borderColor: Colors.neonBlue,
  },
  typeText: {
    color: Colors.textSecondary,
    fontSize: 12,
    fontWeight: "600",
  },
  typeTextActive: {
    color: "#fff",
    textShadowColor: Colors.neonBlue,
    textShadowRadius: 5,
  },
  sortBtn: {
    paddingHorizontal: 8,
    paddingVertical: 6,
    alignItems: "center",
    justifyContent: "center",
    backgroundColor: "rgba(255,255,255,0.05)",
    borderRadius: 15,
  },
  sortBtnText: {
    color: Colors.textTertiary,
    fontSize: 12,
  },
  // List
  listContent: {
    paddingHorizontal: 10,
    paddingBottom: 100,
  },
  itemContainer: {
    marginBottom: 12,
  },
  itemCard: {
    width: "100%",
    backgroundColor: Colors.darkCard,
    borderRadius: 8,
    overflow: "hidden",
    borderWidth: 1,
    borderColor: "rgba(0, 243, 255, 0.2)",
  },
  itemImageContainer: {
    height: 160,
    width: "100%",
    position: "relative",
  },
  itemImage: {
    width: "100%",
    height: "100%",
  },
  itemCyberOverlay: {
    ...StyleSheet.absoluteFillObject,
    backgroundColor: "rgba(0,0,0,0.1)", // Slight dark overlay
    borderBottomWidth: 1,
    borderBottomColor: Colors.neonBlue,
  },
  itemInfo: {
    flexDirection: "row",
    justifyContent: "space-between",
    alignItems: "center",
    padding: 12,
  },
  itemName: {
    flex: 1,
    color: Colors.textPrimary,
    fontSize: 14,
    fontWeight: "bold",
  },
  itemPrice: {
    color: Colors.neonBlue,
    fontSize: 16,
    fontWeight: "bold",
    marginLeft: 10,
    textShadowColor: Colors.neonBlue,
    textShadowRadius: 5,
  },
  priceUnit: {
    fontSize: 12,
    marginRight: 2,
  },
  priceStart: {
    fontSize: 10,
    color: Colors.textTertiary,
    fontWeight: "normal",
  },
  // Footer
  footer: {
    paddingVertical: 15,
    alignItems: "center",
    flexDirection: "row",
    justifyContent: "center",
  },
  footerText: {
    color: Colors.textTertiary,
    fontSize: 12,
    marginLeft: 8,
  },
  empty: {
    alignItems: "center",
    paddingVertical: 50,
  },
  emptyText: {
    color: Colors.textTertiary,
    fontSize: 14,
  },
  // Barrage
  barrageSection: {
    marginVertical: 10,
    paddingHorizontal: 5, // Edge to edge
  },
});