import { ThemedText } from "@/components/themed-text";
import { IconSymbol } from "@/components/ui/icon-symbol";
import { Colors } from "@/constants/theme";
import { useTheme } from "@/context/ThemeContext";
import { League } from "@/types/api";
import { Image } from "expo-image";
import React, { useMemo } from "react";
import { useTranslation } from "react-i18next";
import { ActivityIndicator, FlatList, Modal, Pressable, StyleSheet, View } from "react-native";
import { SafeAreaView } from "react-native-safe-area-context";

interface LeagueModalProps {
  visible: boolean;
  onClose: () => void;
  leagues: League[];
  selectedLeagueKey: string | null;
  loading?: boolean;
  onSelect: (leagueKey: string) => void;
}

export function LeagueModal({
  visible,
  onClose,
  leagues,
  selectedLeagueKey,
  loading = false,
  onSelect,
}: LeagueModalProps) {
  const { theme } = useTheme();
  const { t } = useTranslation();
  const isDark = theme === "dark";
  const bg = isDark ? "#1C1C1E" : "#FFFFFF";
  const text = isDark ? "#FFFFFF" : "#000000";
  const optionBg = isDark ? "#2C2C2E" : "#F5F5F5";
  const iconBg = isDark ? "#3A3A3C" : "#E5E5EA";

  const renderLeagueItem = ({ item: league }: { item: League }) => {
    const isSelected = selectedLeagueKey === league.key;

    return (
      <Pressable
        style={[styles.option, { backgroundColor: optionBg }]}
        onPress={() => {
          onSelect(league.key);
          onClose();
        }}
      >
        {/* 左侧图标 */}
        <View style={[styles.iconContainer, { backgroundColor: iconBg }]}>
          {league.logo ? (
            <Image
              source={{ uri: league.logo }}
              style={styles.leagueLogo}
              contentFit="contain"
            />
          ) : (
            <IconSymbol name="trophy-outline" size={24} color={text} />
          )}
        </View>

        {/* 中间内容 */}
        <View style={styles.content}>
          <ThemedText
            style={[
              styles.leagueName,
              { fontWeight: isSelected ? "600" : "400" },
            ]}
          >
            {league.name}
          </ThemedText>
          {league.countryName && (
            <ThemedText style={styles.countryName}>
              {league.countryName}
            </ThemedText>
          )}
        </View>

        {/* 右侧指示点 */}
        <View
          style={[
            styles.indicator,
            {
              backgroundColor: isSelected
                ? Colors.light.tint
                : isDark
                  ? "#666666"
                  : "#CCCCCC",
            },
          ]}
        />
      </Pressable>
    );
  };

  const renderContent = () => {
    if (loading) {
      return (
        <View style={styles.loadingContainer}>
          <ActivityIndicator size="large" color={Colors[theme].tint} />
          <ThemedText style={styles.loadingText}>
            {t("home.loading")}
          </ThemedText>
        </View>
      );
    }

    if (leagues.length === 0) {
      return (
        <View style={styles.emptyContainer}>
          <ThemedText style={styles.emptyText}>
            {t("home.no_leagues")}
          </ThemedText>
        </View>
      );
    }

    return (
      <FlatList
        data={leagues}
        renderItem={renderLeagueItem}
        keyExtractor={(item) => item.id.toString()}
        showsVerticalScrollIndicator={false}
        contentContainerStyle={styles.listContent}
        removeClippedSubviews={true}
        maxToRenderPerBatch={10}
        updateCellsBatchingPeriod={50}
        windowSize={10}
        initialNumToRender={10}
      />
    );
  };

  return (
    <Modal
      visible={visible}
      transparent
      animationType="slide"
      onRequestClose={onClose}
    >
      <Pressable style={styles.overlay} onPress={onClose}>
        <View />
      </Pressable>

      <View style={[styles.sheet, { backgroundColor: bg }]}>
        <SafeAreaView edges={["bottom"]}>
          <View style={styles.header}>
            <ThemedText type="subtitle" style={styles.title}>
              {t("home.select_league")}
            </ThemedText>
            <Pressable onPress={onClose} style={styles.closeButton}>
              <IconSymbol name="close" size={24} color={text} />
            </Pressable>
          </View>
          {renderContent()}
        </SafeAreaView>
      </View>
    </Modal>
  );
}

const styles = StyleSheet.create({
  overlay: {
    flex: 1,
    backgroundColor: "rgba(0,0,0,0.5)",
  },
  sheet: {
    borderTopLeftRadius: 20,
    borderTopRightRadius: 20,
    padding: 20,
    height: "55%",
  },
  header: {
    flexDirection: "row",
    justifyContent: "space-between",
    alignItems: "center",
    marginBottom: 20,
  },
  title: {
    fontSize: 18,
    fontWeight: "600",
  },
  closeButton: {
    width: 32,
    height: 32,
    alignItems: "center",
    justifyContent: "center",
  },
  listContent: {
    paddingBottom: 20,
  },
  loadingContainer: {
    padding: 40,
    alignItems: "center",
    justifyContent: "center",
  },
  loadingText: {
    marginTop: 12,
    fontSize: 14,
    opacity: 0.6,
  },
  emptyContainer: {
    padding: 40,
    alignItems: "center",
    justifyContent: "center",
  },
  emptyText: {
    fontSize: 16,
    opacity: 0.6,
  },
  option: {
    flexDirection: "row",
    alignItems: "center",
    paddingVertical: 16,
    paddingHorizontal: 16,
    marginBottom: 12,
    borderRadius: 12,
  },
  iconContainer: {
    width: 48,
    height: 48,
    borderRadius: 24,
    alignItems: "center",
    justifyContent: "center",
    marginRight: 12,
  },
  leagueLogo: {
    width: 32,
    height: 32,
  },
  content: {
    flex: 1,
  },
  leagueName: {
    fontSize: 16,
    marginBottom: 4,
  },
  countryName: {
    fontSize: 12,
    opacity: 0.6,
  },
  indicator: {
    width: 8,
    height: 8,
    borderRadius: 4,
    marginLeft: 12,
  },
});