import { LinearGradient } from 'expo-linear-gradient'
import { StatusBar } from 'expo-status-bar'
import { useEffect, useState } from 'react'
import { Pressable, ScrollView, StatusBar as RNStatusBar, StyleSheet, Text, View } from 'react-native'
import { SafeAreaView } from 'react-native-safe-area-context'

import { useActivities } from '@/hooks/data/use-activities'

type MessageType = 'all' | 'notice' | 'other'

export default function MessageScreen() {
  const [activeTab, setActiveTab] = useState<MessageType>('all')
  const { load, loading, error, data } = useActivities()

  useEffect(() => {
    load({ page: 1, limit: 20, orderBy: 'createdAt', order: 'desc' })
  }, [])

  const activities = data?.activities || []

  const filteredActivities = activities.filter((activity) => {
    if (activeTab === 'all') return true
    return activeTab === 'notice'
  })

  return (
    <SafeAreaView edges={['top']} style={styles.container}>
      <StatusBar style="light" />
      <RNStatusBar barStyle="light-content" />

      {/* 固定在顶部的标签选择器 */}
      <View style={styles.segment}>
        <Pressable onPress={() => setActiveTab('all')}>
          {activeTab === 'all' ? (
            <View style={styles.segmentTextActiveWrapper}>
              <LinearGradient
                colors={['#FF9966', '#FF6699', '#9966FF']}
                end={{ x: 1, y: 0 }}
                start={{ x: 0, y: 0 }}
                style={styles.segmentTextActiveBg}
              />
              <Text style={[styles.segmentText, styles.segmentTextActiveText]}>全部</Text>
            </View>
          ) : (
            <Text style={styles.segmentText}>全部</Text>
          )}
        </Pressable>
        <Pressable onPress={() => setActiveTab('notice')}>
          {activeTab === 'notice' ? (
            <View style={styles.segmentTextActiveWrapper}>
              <LinearGradient
                colors={['#FF9966', '#FF6699', '#9966FF']}
                end={{ x: 1, y: 0 }}
                start={{ x: 0, y: 0 }}
                style={styles.segmentTextActiveBg}
              />
              <Text style={[styles.segmentText, styles.segmentTextActiveText]}>活动通知</Text>
            </View>
          ) : (
            <Text style={styles.segmentText}>活动通知</Text>
          )}
        </Pressable>
        <Pressable onPress={() => setActiveTab('other')}>
          {activeTab === 'other' ? (
            <View style={styles.segmentTextActiveWrapper}>
              <LinearGradient
                colors={['#FF9966', '#FF6699', '#9966FF']}
                end={{ x: 1, y: 0 }}
                start={{ x: 0, y: 0 }}
                style={styles.segmentTextActiveBg}
              />
              <Text style={[styles.segmentText, styles.segmentTextActiveText]}>其他</Text>
            </View>
          ) : (
            <Text style={styles.segmentText}>其他</Text>
          )}
        </Pressable>
      </View>

      <ScrollView
        contentContainerStyle={styles.scrollContent}
        showsVerticalScrollIndicator={false}
        style={styles.scrollView}
      >
        {loading ? (
          <View style={styles.emptyContainer}>
            <Text style={styles.emptyText}>加载中...</Text>
          </View>
        ) : error ? (
          <View style={styles.emptyContainer}>
            <Text style={styles.emptyText}>加载失败</Text>
          </View>
        ) : filteredActivities.length > 0 ? (
          filteredActivities.map((activity) => (
            <View key={activity.id} style={styles.cardContainer}>
              <Text style={styles.cardTitle}>{activity.title}</Text>
              <Text numberOfLines={2} style={styles.cardSubtitle}>
                {activity.titleEn || activity.desc}
              </Text>

              <View style={styles.cardBody}>
                <Text style={styles.cardBodyText}>{activity.desc}</Text>
              </View>

              <Text style={styles.cardTime}>
                {new Date(activity.createdAt)
                  .toLocaleString('zh-CN', {
                    year: 'numeric',
                    month: '2-digit',
                    day: '2-digit',
                    hour: '2-digit',
                    minute: '2-digit',
                    second: '2-digit',
                    hour12: false,
                  })
                  .replace(/\//g, '-')}
              </Text>
            </View>
          ))
        ) : (
          <View style={styles.emptyContainer}>
            <Text style={styles.emptyText}>💭</Text>
            <Text style={styles.emptyText}>暂无消息</Text>
          </View>
        )}
      </ScrollView>
    </SafeAreaView>
  )
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#090A0B',
  },
  scrollView: {
    flex: 1,
    backgroundColor: '#090A0B',
  },
  scrollContent: {
    paddingHorizontal: 4,
    paddingTop: 12,
    paddingBottom: 24,
  },
  segment: {
    flexDirection: 'row',
    paddingHorizontal: 8,
    paddingTop: 19,
    paddingBottom: 12,
    backgroundColor: '#090A0B',
    gap: 16,
  },

  segmentText: {
    fontSize: 14,
    color: '#FFFFFF',
  },
  segmentTextActiveWrapper: {
    position: 'relative',
    paddingBottom: 2,
    justifyContent: 'flex-end',
    alignSelf: 'flex-start',
  },
  segmentTextActiveBg: {
    position: 'absolute',
    left: 0,
    right: 0,
    bottom: 0,
    height: 10,
    backgroundColor: '#FF9966',
  },
  segmentTextActiveText: {
    zIndex: 1,
  },
  cardContainer: {
    backgroundColor: '#16181B',
    borderRadius: 16,
    padding: 16,
    marginBottom: 12,
    marginHorizontal: 4,
  },
  cardTitle: {
    color: '#FFFFFF',
    fontSize: 15,
    fontWeight: '600',
    marginBottom: 8,
  },
  cardSubtitle: {
    color: '#ABABAB',
    fontSize: 11,
    marginBottom: 16,
  },
  cardBody: {
    backgroundColor: '#26292E',
    borderRadius: 12,
    height: 100,
    marginBottom: 12,
  },
  cardBodyText: {
    color: '#FFFFFF',
    fontSize: 12,
    opacity: 0.8,
  },
  cardTime: {
    color: '#8A8A8A',
    fontSize: 10,
  },
  emptyContainer: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    paddingTop: 200,
  },
  emptyText: {
    color: '#8A8A8A',
    fontSize: 12,
    marginTop: 16,
  },
})