/**
 * 设置页 SettingsScreen（响应式适配）
 * 胡萝卜BBS - 应用设置
 * 在宽屏下居中显示，最大宽度限制
 */

import React from 'react';
import {
  View,
  StyleSheet,
  TouchableOpacity,
  Alert,
  ScrollView,
} from 'react-native';
import { SafeAreaView } from 'react-native-safe-area-context';
import { useNavigation } from '@react-navigation/native';
import { MaterialCommunityIcons } from '@expo/vector-icons';
import Constants from 'expo-constants';
import { colors, spacing, fontSizes, borderRadius } from '../../theme';
import { useAuthStore } from '../../stores';
import { Text, ResponsiveContainer } from '../../components/common';
import { useResponsive } from '../../hooks';

interface SettingsItem {
  key: string;
  title: string;
  icon: string;
  onPress?: () => void;
  showArrow?: boolean;
  danger?: boolean;
  subtitle?: string;
}

// 获取应用版本号
const APP_VERSION = Constants.expoConfig?.version || '1.0.0';

// 设置分组配置
const SETTINGS_GROUPS = [
  {
    title: '账号与安全',
    icon: 'shield-check-outline',
    items: [
      { key: 'edit_profile', title: '编辑资料', icon: 'account-edit-outline', showArrow: true },
      { key: 'privacy', title: '隐私设置', icon: 'shield-account-outline', showArrow: true },
      { key: 'security', title: '账号安全', icon: 'lock-outline', showArrow: true },
      { key: 'blocked_users', title: '黑名单', icon: 'account-off-outline', showArrow: true },
    ],
  },
  {
    title: '通知与通用',
    icon: 'bell-outline',
    items: [
      { key: 'notification_settings', title: '通知设置', icon: 'bell-cog-outline', showArrow: true, subtitle: '推送、震动、提示音' },
    ],
  },
  {
    title: '关于与帮助',
    icon: 'information-outline',
    items: [
      { key: 'about', title: '关于我们', icon: 'information-outline', showArrow: true, subtitle: `版本 ${APP_VERSION}` },
      { key: 'help', title: '帮助与反馈', icon: 'help-circle-outline', showArrow: true },
    ],
  },
];

export const SettingsScreen: React.FC = () => {
  const navigation = useNavigation();
  const { logout } = useAuthStore();
  const { isWideScreen } = useResponsive();

  // 处理设置项点击
  const handleItemPress = (key: string) => {
    switch (key) {
      case 'edit_profile':
        navigation.navigate('EditProfile' as never);
        break;
      case 'notification_settings':
        navigation.navigate('NotificationSettings' as never);
        break;
      case 'blocked_users':
        navigation.navigate('BlockedUsers' as never);
        break;
      case 'security':
        navigation.navigate('AccountSecurity' as never);
        break;
      case 'logout':
        Alert.alert(
          '退出登录',
          '确定要退出登录吗？',
          [
            { text: '取消', style: 'cancel' },
            {
              text: '确定',
              style: 'destructive',
              onPress: () => {
                logout();
              }
            },
          ]
        );
        break;
      default:
        break;
    }
  };

  // 渲染单个设置项
  const renderSettingItem = (item: SettingsItem, index: number, total: number) => (
    <TouchableOpacity
      key={item.key}
      style={[
        styles.settingItem,
        index === 0 && styles.settingItemFirst,
        index === total - 1 && styles.settingItemLast,
      ]}
      onPress={() => item.onPress ? item.onPress() : handleItemPress(item.key)}
      activeOpacity={0.7}
    >
      <View style={styles.settingItemLeft}>
        <View style={[
          styles.iconContainer,
          item.danger && styles.dangerIconContainer
        ]}>
          <MaterialCommunityIcons
            name={item.icon as any}
            size={20}
            color={item.danger ? colors.error.main : colors.primary.main}
          />
        </View>
        <View style={styles.settingContent}>
          <Text
            variant="body"
            color={item.danger ? colors.error.main : colors.text.primary}
          >
            {item.title}
          </Text>
          {item.subtitle && (
            <Text variant="caption" color={colors.text.secondary} style={styles.subtitle}>
              {item.subtitle}
            </Text>
          )}
        </View>
      </View>
      {item.showArrow && (
        <MaterialCommunityIcons name="chevron-right" size={20} color={colors.text.hint} />
      )}
    </TouchableOpacity>
  );

  // 渲染分组
  const renderGroup = (group: typeof SETTINGS_GROUPS[0], groupIndex: number) => (
    <View key={group.title} style={styles.groupContainer}>
      <View style={styles.groupHeader}>
        <MaterialCommunityIcons name={group.icon as any} size={16} color={colors.primary.main} />
        <Text variant="caption" color={colors.text.secondary} style={styles.groupTitle}>
          {group.title}
        </Text>
      </View>
      <View style={styles.card}>
        {group.items.map((item, index) =>
          renderSettingItem(item, index, group.items.length)
        )}
      </View>
    </View>
  );

  // 退出登录按钮
  const renderLogoutButton = () => (
    <TouchableOpacity
      style={styles.logoutButton}
      onPress={() => handleItemPress('logout')}
      activeOpacity={0.7}
    >
      <MaterialCommunityIcons name="logout-variant" size={20} color={colors.error.main} />
      <Text variant="body" color={colors.error.main} style={styles.logoutText}>
        退出登录
      </Text>
    </TouchableOpacity>
  );

  // 渲染内容
  const renderContent = () => (
    <>
      {SETTINGS_GROUPS.map((group, index) => renderGroup(group, index))}
      {renderLogoutButton()}

      {/* 底部版权信息 */}
      <View style={styles.footer}>
        <Text variant="caption" color={colors.text.hint}>
          萝卜社区 v{APP_VERSION}
        </Text>
        <Text variant="caption" color={colors.text.hint} style={styles.copyright}>
          © 2024 Carrot BBS. All rights reserved.
        </Text>
      </View>
    </>
  );

  return (
    <SafeAreaView style={styles.container} edges={['bottom']}>
      {isWideScreen ? (
        <ResponsiveContainer maxWidth={800}>
          <ScrollView contentContainerStyle={styles.scrollContent}>
            {renderContent()}
          </ScrollView>
        </ResponsiveContainer>
      ) : (
        <ScrollView contentContainerStyle={styles.scrollContent}>
          {renderContent()}
        </ScrollView>
      )}
    </SafeAreaView>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: colors.background.default,
  },
  scrollContent: {
    paddingVertical: spacing.md,
  },
  groupContainer: {
    marginBottom: spacing.lg,
  },
  groupHeader: {
    flexDirection: 'row',
    alignItems: 'center',
    paddingHorizontal: spacing.lg,
    marginBottom: spacing.sm,
    gap: spacing.xs,
  },
  groupTitle: {
    fontWeight: '600',
    fontSize: fontSizes.sm,
  },
  card: {
    backgroundColor: colors.background.paper,
    marginHorizontal: spacing.lg,
    borderRadius: borderRadius.lg,
    overflow: 'hidden',
  },
  settingItem: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between',
    paddingVertical: spacing.md,
    paddingHorizontal: spacing.md,
    borderBottomWidth: 1,
    borderBottomColor: colors.divider,
  },
  settingItemFirst: {
    borderTopLeftRadius: borderRadius.lg,
    borderTopRightRadius: borderRadius.lg,
  },
  settingItemLast: {
    borderBottomLeftRadius: borderRadius.lg,
    borderBottomRightRadius: borderRadius.lg,
    borderBottomWidth: 0,
  },
  settingItemLeft: {
    flexDirection: 'row',
    alignItems: 'center',
    flex: 1,
  },
  iconContainer: {
    width: 36,
    height: 36,
    borderRadius: borderRadius.md,
    backgroundColor: colors.primary.light + '20',
    justifyContent: 'center',
    alignItems: 'center',
    marginRight: spacing.md,
  },
  dangerIconContainer: {
    backgroundColor: colors.error.light + '20',
  },
  settingContent: {
    flex: 1,
  },
  subtitle: {
    marginTop: 2,
  },
  logoutButton: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: colors.background.paper,
    marginHorizontal: spacing.lg,
    marginTop: spacing.sm,
    marginBottom: spacing.lg,
    paddingVertical: spacing.md,
    borderRadius: borderRadius.lg,
    gap: spacing.sm,
  },
  logoutText: {
    fontWeight: '500',
  },
  footer: {
    alignItems: 'center',
    marginTop: spacing.xl,
    paddingBottom: spacing.xl,
  },
  copyright: {
    marginTop: spacing.xs,
  },
});

export default SettingsScreen;
