/**
 * 公告栏组件
 *
 * 展示滚动公告，使用真实数据
 */

import React, { useState, useEffect, useRef } from 'react';
import {
  View,
  Text,
  StyleSheet,
  Animated,
  TouchableOpacity,
  Dimensions,
} from 'react-native';
import { createThemeStyles } from '@/theme';
import Colors from '@/constants/Colors';
import { mockNotices } from '@/services/mockHomeService';
import type { Notice } from '@/types/home';

const { width } = Dimensions.get('window');

/**
 * 创建主题样式
 */
const styles = createThemeStyles((colors) => ({
  container: {
    backgroundColor: colors.backgroundSecondary,
    paddingVertical: 10,
    paddingHorizontal: 12,
    marginHorizontal: 12,
    marginBottom: 12,
    borderRadius: 8,
    flexDirection: 'row',
    alignItems: 'center',
    elevation: 2,
    shadowColor: colors.cardShadow,
    shadowOffset: { width: 0, height: 1 },
    shadowOpacity: 0.1,
    shadowRadius: 3,
  },
  label: {
    fontSize: 12,
    fontWeight: 'bold',
    color: '#FFFFFF',
    marginRight: 8,
    backgroundColor: colors.primary,
    paddingHorizontal: 8,
    paddingVertical: 4,
    borderRadius: 4,
  },
  content: {
    flex: 1,
    fontSize: 12,
    color: colors.text,
    overflow: 'hidden',
  },
  closeButton: {
    marginLeft: 8,
    padding: 4,
  },
  closeText: {
    fontSize: 16,
    color: colors.textSecondary,
  },
}));

interface NoticeBarProps {
  theme: 'light' | 'dark';
  notices?: Notice[];
  onNoticePress?: (notice: Notice) => void;
}

/**
 * 公告栏组件
 */
export default function NoticeBar({ theme, notices: propNotices, onNoticePress }: NoticeBarProps) {
  const s = styles[theme];
  const [notices, setNotices] = useState<Notice[]>(propNotices || []);
  const [currentNotice, setCurrentNotice] = useState(0);
  const [visible, setVisible] = useState(true);
  const animatedValue = useRef(new Animated.Value(1)).current;

  // 加载公告数据
  useEffect(() => {
    if (propNotices && propNotices.length > 0) {
      setNotices(propNotices);
      return;
    }

    const loadNotices = async () => {
      try {
        // const data = await getNotices();
        // setNotices(data.length > 0 ? data : mockNotices);
      } catch (error) {
        console.error('加载公告失败:', error);
        setNotices(mockNotices);
      }
    };
    loadNotices();
  }, [propNotices]);

  // 自动切换公告
  useEffect(() => {
    if (notices.length === 0) return;

    const timer = setInterval(() => {
      setCurrentNotice((prev) => (prev + 1) % notices.length);
    }, 5000);

    return () => clearInterval(timer);
  }, [notices.length]);

  // 处理关闭公告
  const handleClose = () => {
    Animated.timing(animatedValue, {
      toValue: 0,
      duration: 300,
      useNativeDriver: true,
    }).start(() => {
      setVisible(false);
    });
  };

  // 处理公告点击
  const handleNoticePress = () => {
    if (notices.length > 0) {
      onNoticePress?.(notices[currentNotice]);
    }
  };

  if (!visible || notices.length === 0) {
    return null;
  }

  const currentNoticeData = notices[currentNotice];

  return (
    <Animated.View
      style={[
        s.container,
        {
          opacity: animatedValue,
          transform: [
            {
              scaleY: animatedValue,
            },
          ],
        },
      ]}
    >
      <Text style={s.label}>📢</Text>
      <TouchableOpacity
        style={{ flex: 1 }}
        onPress={handleNoticePress}
        activeOpacity={0.7}
      >
        <Text style={s.content} numberOfLines={1}>
          {currentNoticeData.title || currentNoticeData.content}
        </Text>
      </TouchableOpacity>
      <TouchableOpacity
        style={s.closeButton}
        onPress={handleClose}
      >
        <Text style={s.closeText}>✕</Text>
      </TouchableOpacity>
    </Animated.View>
  );
}