import { Image } from 'expo-image';
import React, { forwardRef, useImperativeHandle, useState } from 'react';
import {
    ActivityIndicator,
    FlatList,
    Modal,
    StyleSheet,
    Text,
    TouchableOpacity,
    View,
} from 'react-native';

import { getBuyRecord } from '@/services/award';

interface RecordItem {
  id: string;
  nickname: string;
  avatar: string;
  goodsName: string;
  cover: string;  // API 返回的是 cover 字段
  level: string;
  createTime: string;
}

interface RecordModalProps {
  poolId: string;
}

export interface RecordModalRef {
  show: () => void;
  close: () => void;
}

const LEVEL_MAP: Record<string, string> = {
  A: '超神款',
  B: '欧皇款',
  C: '隐藏款',
  D: '普通款',
};

export const RecordModal = forwardRef<RecordModalRef, RecordModalProps>(
  ({ poolId }, ref) => {
    const [visible, setVisible] = useState(false);
    const [loading, setLoading] = useState(false);
    const [records, setRecords] = useState<RecordItem[]>([]);
    const [levelFilter, setLevelFilter] = useState<number | undefined>();

    useImperativeHandle(ref, () => ({
      show: () => {
        setVisible(true);
        loadRecords();
      },
      close: () => setVisible(false),
    }));

    const loadRecords = async (level?: number) => {
      setLoading(true);
      try {
        const res = await getBuyRecord(poolId, undefined, level);
        setRecords(res || []);
      } catch (error) {
        console.error('加载记录失败:', error);
      }
      setLoading(false);
    };

    const handleLevelFilter = (level?: number) => {
      setLevelFilter(level);
      loadRecords(level);
    };

    const renderItem = ({ item }: { item: RecordItem }) => (
      <View style={styles.recordItem}>
        <Image
          source={{ uri: item.avatar }}
          style={styles.avatar}
          contentFit="cover"
        />
        <View style={styles.recordInfo}>
          <Text style={styles.nickname} numberOfLines={1}>{item.nickname}</Text>
          <Text style={styles.time}>{item.createTime}</Text>
        </View>
        <View style={styles.goodsInfo}>
          <Image
            source={{ uri: item.cover }}
            style={styles.goodsImage}
            contentFit="cover"
          />
          <View style={styles.goodsDetail}>
            <Text style={styles.goodsName} numberOfLines={1}>{item.goodsName}</Text>
            <Text style={styles.levelText}>{LEVEL_MAP[item.level] || item.level}</Text>
          </View>
        </View>
      </View>
    );

    const levels = [
      { label: '全部', value: undefined },
      { label: '超神款', value: 1 },
      { label: '欧皇款', value: 2 },
      { label: '隐藏款', value: 3 },
      { label: '普通款', value: 4 },
    ];

    return (
      <Modal visible={visible} transparent animationType="slide" onRequestClose={() => setVisible(false)}>
        <View style={styles.overlay}>
          <View style={styles.container}>
            <View style={styles.header}>
              <Text style={styles.title}>购买记录</Text>
              <TouchableOpacity onPress={() => setVisible(false)} style={styles.closeBtn}>
                <Text style={styles.closeText}>×</Text>
              </TouchableOpacity>
            </View>

            <View style={styles.filterRow}>
              {levels.map((item) => (
                <TouchableOpacity
                  key={item.label}
                  style={[styles.filterBtn, levelFilter === item.value && styles.filterBtnActive]}
                  onPress={() => handleLevelFilter(item.value)}
                >
                  <Text style={[styles.filterText, levelFilter === item.value && styles.filterTextActive]}>
                    {item.label}
                  </Text>
                </TouchableOpacity>
              ))}
            </View>

            {loading ? (
              <View style={styles.loadingBox}>
                <ActivityIndicator size="large" color="#ff6600" />
              </View>
            ) : (
              <FlatList
                data={records}
                renderItem={renderItem}
                keyExtractor={(item, index) => item.id || index.toString()}
                contentContainerStyle={styles.listContent}
                ListEmptyComponent={
                  <View style={styles.emptyBox}>
                    <Text style={styles.emptyText}>暂无记录</Text>
                  </View>
                }
              />
            )}
          </View>
        </View>
      </Modal>
    );
  }
);

const styles = StyleSheet.create({
  overlay: {
    flex: 1,
    backgroundColor: 'rgba(0,0,0,0.5)',
    justifyContent: 'flex-end',
  },
  container: {
    backgroundColor: '#fff',
    borderTopLeftRadius: 20,
    borderTopRightRadius: 20,
    height: '70%',
  },
  header: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'center',
    padding: 15,
    borderBottomWidth: 1,
    borderBottomColor: '#eee',
  },
  title: { fontSize: 16, fontWeight: '600', color: '#333' },
  closeBtn: { position: 'absolute', right: 15, top: 10 },
  closeText: { fontSize: 24, color: '#999' },
  filterRow: {
    flexDirection: 'row',
    paddingHorizontal: 10,
    paddingVertical: 10,
    borderBottomWidth: 1,
    borderBottomColor: '#eee',
  },
  filterBtn: {
    paddingHorizontal: 12,
    paddingVertical: 6,
    borderRadius: 15,
    marginRight: 8,
    backgroundColor: '#f5f5f5',
  },
  filterBtnActive: { backgroundColor: '#ff6600' },
  filterText: { fontSize: 12, color: '#666' },
  filterTextActive: { color: '#fff' },
  listContent: { padding: 15 },
  recordItem: {
    flexDirection: 'row',
    alignItems: 'center',
    paddingVertical: 12,
    borderBottomWidth: 1,
    borderBottomColor: '#f5f5f5',
  },
  avatar: { width: 40, height: 40, borderRadius: 20 },
  recordInfo: { flex: 1, marginLeft: 10 },
  nickname: { fontSize: 14, color: '#333' },
  time: { fontSize: 11, color: '#999', marginTop: 2 },
  goodsInfo: { flexDirection: 'row', alignItems: 'center' },
  goodsImage: { width: 50, height: 50, borderRadius: 5 },
  goodsDetail: { marginLeft: 8, alignItems: 'flex-end' },
  goodsName: { fontSize: 12, color: '#333', maxWidth: 80 },
  levelText: { fontSize: 11, color: '#ff6600', marginTop: 2 },
  loadingBox: { flex: 1, justifyContent: 'center', alignItems: 'center' },
  emptyBox: { alignItems: 'center', paddingVertical: 50 },
  emptyText: { color: '#999', fontSize: 14 },
});