/**
 * 主题演示组件
 * 
 * 展示所有主题颜色和组件在不同主题下的效果
 */

import React from 'react';
import { StyleSheet, View, Text, TouchableOpacity, ScrollView } from 'react-native';
import { ThemedText, ThemedView, useThemeColor } from './Themed';
import { useTheme, useSettingsActions } from '@/stores';
import { useHaptics } from '@/hooks';

export function ThemeDemo() {
  const theme = useTheme();
  const { setTheme } = useSettingsActions();
  const haptics = useHaptics();

  // 获取主题颜色
  const primary = useThemeColor({}, 'primary');
  const secondary = useThemeColor({}, 'secondary');
  const success = useThemeColor({}, 'success');
  const warning = useThemeColor({}, 'warning');
  const error = useThemeColor({}, 'error');
  const info = useThemeColor({}, 'info');
  const border = useThemeColor({}, 'border');
  const card = useThemeColor({}, 'card');
  const textSecondary = useThemeColor({}, 'textSecondary');

  const handleThemeChange = (newTheme: 'light' | 'dark' | 'auto') => {
    haptics.selection();
    console.log('🎨 Changing theme to:', newTheme);
    setTheme(newTheme);
    console.log('🎨 Theme colors after change:', { primary, secondary, background: card });
  };

  return (
    <ThemedView style={styles.container}>
      <ScrollView>
        {/* 主题切换器 */}
        <View style={styles.section}>
          <ThemedText type="subtitle">主题切换</ThemedText>
          <View style={styles.themeButtons}>
            <TouchableOpacity
              style={[
                styles.themeButton,
                { borderColor: border },
                theme === 'light' && { backgroundColor: primary },
              ]}
              onPress={() => handleThemeChange('light')}
            >
              <Text style={[styles.themeButtonText, theme === 'light' && styles.activeButtonText]}>
                ☀️ 浅色
              </Text>
            </TouchableOpacity>

            <TouchableOpacity
              style={[
                styles.themeButton,
                { borderColor: border },
                theme === 'dark' && { backgroundColor: primary },
              ]}
              onPress={() => handleThemeChange('dark')}
            >
              <Text style={[styles.themeButtonText, theme === 'dark' && styles.activeButtonText]}>
                🌙 深色
              </Text>
            </TouchableOpacity>

            <TouchableOpacity
              style={[
                styles.themeButton,
                { borderColor: border },
                theme === 'auto' && { backgroundColor: primary },
              ]}
              onPress={() => handleThemeChange('auto')}
            >
              <Text style={[styles.themeButtonText, theme === 'auto' && styles.activeButtonText]}>
                🔄 自动
              </Text>
            </TouchableOpacity>
          </View>
          <ThemedText style={styles.hint}>
            当前主题: {theme === 'light' ? '浅色' : theme === 'dark' ? '深色' : '自动'}
          </ThemedText>
        </View>

        {/* 文本样式 */}
        <View style={styles.section}>
          <ThemedText type="subtitle">文本样式</ThemedText>
          <ThemedText type="title">标题文本 (Title)</ThemedText>
          <ThemedText type="subtitle">副标题文本 (Subtitle)</ThemedText>
          <ThemedText type="defaultSemiBold">加粗文本 (SemiBold)</ThemedText>
          <ThemedText type="default">默认文本 (Default)</ThemedText>
          <ThemedText type="link">链接文本 (Link)</ThemedText>
        </View>

        {/* 颜色展示 */}
        <View style={styles.section}>
          <ThemedText type="subtitle">主题颜色</ThemedText>
          <View style={styles.colorGrid}>
            <View style={styles.colorItem}>
              <View style={[styles.colorBox, { backgroundColor: primary }]} />
              <ThemedText style={styles.colorLabel}>Primary</ThemedText>
            </View>
            <View style={styles.colorItem}>
              <View style={[styles.colorBox, { backgroundColor: secondary }]} />
              <ThemedText style={styles.colorLabel}>Secondary</ThemedText>
            </View>
            <View style={styles.colorItem}>
              <View style={[styles.colorBox, { backgroundColor: success }]} />
              <ThemedText style={styles.colorLabel}>Success</ThemedText>
            </View>
            <View style={styles.colorItem}>
              <View style={[styles.colorBox, { backgroundColor: warning }]} />
              <ThemedText style={styles.colorLabel}>Warning</ThemedText>
            </View>
            <View style={styles.colorItem}>
              <View style={[styles.colorBox, { backgroundColor: error }]} />
              <ThemedText style={styles.colorLabel}>Error</ThemedText>
            </View>
            <View style={styles.colorItem}>
              <View style={[styles.colorBox, { backgroundColor: info }]} />
              <ThemedText style={styles.colorLabel}>Info</ThemedText>
            </View>
          </View>
        </View>

        {/* 卡片示例 */}
        <View style={styles.section}>
          <ThemedText type="subtitle">卡片组件</ThemedText>
          <View style={[styles.card, { backgroundColor: card, borderColor: border }]}>
            <ThemedText type="defaultSemiBold">卡片标题</ThemedText>
            <ThemedText style={{ color: textSecondary }}>
              这是一个卡片组件示例，会根据主题自动调整颜色
            </ThemedText>
          </View>
        </View>

        {/* 按钮示例 */}
        <View style={styles.section}>
          <ThemedText type="subtitle">按钮组件</ThemedText>
          <TouchableOpacity style={[styles.button, { backgroundColor: primary }]}>
            <Text style={styles.buttonText}>Primary Button</Text>
          </TouchableOpacity>
          <TouchableOpacity style={[styles.button, { backgroundColor: secondary }]}>
            <Text style={styles.buttonText}>Secondary Button</Text>
          </TouchableOpacity>
          <TouchableOpacity style={[styles.button, { backgroundColor: success }]}>
            <Text style={styles.buttonText}>Success Button</Text>
          </TouchableOpacity>
          <TouchableOpacity style={[styles.button, { backgroundColor: error }]}>
            <Text style={styles.buttonText}>Error Button</Text>
          </TouchableOpacity>
        </View>
      </ScrollView>
    </ThemedView>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 16,
  },
  section: {
    marginBottom: 24,
  },
  themeButtons: {
    flexDirection: 'row',
    gap: 12,
    marginTop: 12,
  },
  themeButton: {
    flex: 1,
    paddingVertical: 12,
    paddingHorizontal: 16,
    borderRadius: 8,
    borderWidth: 1,
    alignItems: 'center',
  },
  themeButtonText: {
    fontSize: 14,
    fontWeight: '600',
  },
  activeButtonText: {
    color: '#FFFFFF',
  },
  hint: {
    marginTop: 8,
    fontSize: 12,
    opacity: 0.7,
  },
  colorGrid: {
    flexDirection: 'row',
    flexWrap: 'wrap',
    gap: 16,
    marginTop: 12,
  },
  colorItem: {
    alignItems: 'center',
    width: 80,
  },
  colorBox: {
    width: 60,
    height: 60,
    borderRadius: 8,
    marginBottom: 8,
  },
  colorLabel: {
    fontSize: 12,
    textAlign: 'center',
  },
  card: {
    padding: 16,
    borderRadius: 12,
    borderWidth: 1,
    marginTop: 12,
  },
  button: {
    paddingVertical: 12,
    paddingHorizontal: 24,
    borderRadius: 8,
    alignItems: 'center',
    marginTop: 12,
  },
  buttonText: {
    color: '#FFFFFF',
    fontSize: 16,
    fontWeight: '600',
  },
});