import { Ionicons } from '@expo/vector-icons';
import React, { useState } from 'react';
import {
  Animated,
  Modal,
  StyleSheet,
  Text,
  TouchableOpacity,
  View
} from 'react-native';

import { Colors } from '@/constants/Colors';
import { useColorScheme } from '@/hooks/useColorScheme';

// 睡眠详情数据类型
export type SleepDetailData = {
  sleepScore: number;
  totalSleepTime: number;
  sleepQualityPercentage: number;
  bedtime: string;
  wakeupTime: string;
  timeInBed: number;
  sleepStages: any[];
  rawSleepSamples: any[];
  averageHeartRate: number | null;
  sleepHeartRateData: any[];
  sleepEfficiency: number;
  qualityDescription: string;
  recommendation: string;
};

// Sleep Grade Component 睡眠等级组件
const SleepGradeCard = ({
  icon,
  grade,
  range,
  isActive = false
}: {
  icon: string;
  grade: string;
  range: string;
  isActive?: boolean;
}) => {
  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
  const colorTokens = Colors[theme];

  const getGradeColor = (grade: string) => {
    switch (grade) {
      case '低': case '较差': return { bg: '#FECACA', text: '#DC2626' };
      case '正常': case '一般': return { bg: '#D1FAE5', text: '#065F46' };
      case '良好': return { bg: '#D1FAE5', text: '#065F46' };
      case '优秀': return { bg: '#FEF3C7', text: '#92400E' };
      default: return { bg: colorTokens.pageBackgroundEmphasis, text: colorTokens.textSecondary };
    }
  };

  const colors = getGradeColor(grade);

  return (
    <View style={[
      styles.gradeCard,
      {
        backgroundColor: isActive ? colors.bg : colorTokens.pageBackgroundEmphasis,
        borderColor: isActive ? colors.text : 'transparent',
      }
    ]}>
      <View style={styles.gradeCardLeft}>
        <Ionicons name={icon as any} size={16} color={colors.text} />
        <Text style={[
          styles.gradeText,
          { color: isActive ? colors.text : colorTokens.textSecondary }
        ]}>
          {grade}
        </Text>
      </View>
      <Text style={[
        styles.gradeRange,
        { color: isActive ? colors.text : colorTokens.textSecondary }
      ]}>
        {range}
      </Text>
    </View>
  );
};

// Info Modal 组件
export const InfoModal = ({
  visible,
  onClose,
  title,
  type,
  sleepData
}: {
  visible: boolean;
  onClose: () => void;
  title: string;
  type: 'sleep-time' | 'sleep-quality';
  sleepData: SleepDetailData;
}) => {
  const theme = (useColorScheme() ?? 'light') as 'light' | 'dark';
  const colorTokens = Colors[theme];
  const slideAnim = useState(new Animated.Value(0))[0];

  React.useEffect(() => {
    if (visible) {
      // 重置动画值确保每次打开都有动画
      slideAnim.setValue(0);
      Animated.spring(slideAnim, {
        toValue: 1,
        useNativeDriver: true,
        tension: 100,
        friction: 8,
      }).start();
    } else {
      Animated.spring(slideAnim, {
        toValue: 0,
        useNativeDriver: true,
        tension: 100,
        friction: 8,
      }).start();
    }
  }, [visible]);

  const translateY = slideAnim.interpolate({
    inputRange: [0, 1],
    outputRange: [300, 0],
  });

  const opacity = slideAnim.interpolate({
    inputRange: [0, 1],
    outputRange: [0, 1],
  });

  // 根据实际睡眠时间计算等级
  const getSleepTimeGrade = (totalSleepMinutes: number) => {
    const hours = totalSleepMinutes / 60;
    if (hours < 6) return 0; // 低
    if ((hours >= 6 && hours < 7) || hours > 9) return 1; // 正常
    if (hours >= 7 && hours < 8) return 2; // 良好
    if (hours >= 8 && hours <= 9) return 3; // 优秀
    return 1; // 默认正常
  };

  // 根据实际睡眠质量百分比计算等级
  const getSleepQualityGrade = (qualityPercentage: number) => {
    if (qualityPercentage < 55) return 0; // 较差
    if (qualityPercentage < 70) return 1; // 一般
    if (qualityPercentage < 85) return 2; // 良好
    return 3; // 优秀
  };

  const currentSleepTimeGrade = getSleepTimeGrade(sleepData.totalSleepTime || 443); // 默认7h23m
  const currentSleepQualityGrade = getSleepQualityGrade(sleepData.sleepQualityPercentage || 94); // 默认94%

  const sleepTimeGrades = [
    { icon: 'alert-circle-outline', grade: '低', range: '< 6h', isActive: currentSleepTimeGrade === 0 },
    { icon: 'checkmark-circle-outline', grade: '正常', range: '6h - 7h or > 9h', isActive: currentSleepTimeGrade === 1 },
    { icon: 'checkmark-circle', grade: '良好', range: '7h - 8h', isActive: currentSleepTimeGrade === 2 },
    { icon: 'star', grade: '优秀', range: '8h - 9h', isActive: currentSleepTimeGrade === 3 },
  ];

  const sleepQualityGrades = [
    { icon: 'alert-circle-outline', grade: '较差', range: '< 55%', isActive: currentSleepQualityGrade === 0 },
    { icon: 'checkmark-circle-outline', grade: '一般', range: '55% - 69%', isActive: currentSleepQualityGrade === 1 },
    { icon: 'checkmark-circle', grade: '良好', range: '70% - 84%', isActive: currentSleepQualityGrade === 2 },
    { icon: 'star', grade: '优秀', range: '85% - 100%', isActive: currentSleepQualityGrade === 3 },
  ];

  const currentGrades = type === 'sleep-time' ? sleepTimeGrades : sleepQualityGrades;

  const getDescription = () => {
    if (type === 'sleep-time') {
      return '睡眠最重要 - 它占据了你睡眠得分的一半以上。长时间的睡眠可以减少睡眠债务，但是规律的睡眠时间对于高质量的休息至关重要。';
    } else {
      return '睡眠质量综合评估您的睡眠效率、深度睡眠时长、REM睡眠比例等多个指标。高质量的睡眠不仅仅取决于时长，还包括睡眠的连续性和各睡眠阶段的平衡。';
    }
  };

  return (
    <Modal
      transparent
      visible={visible}
      animationType="none"
      onRequestClose={onClose}
    >
      <TouchableOpacity
        style={styles.modalOverlay}
        activeOpacity={1}
        onPress={onClose}
      >
        <Animated.View style={[
          styles.infoModalContent,
          {
            backgroundColor: colorTokens.background,
            transform: [{ translateY }],
            opacity,
          }
        ]}>
          <View style={styles.modalHandle} />
          <View style={styles.infoModalHeader}>
            <Text style={[styles.infoModalTitle, { color: colorTokens.text }]}>
              {title}
            </Text>
            <TouchableOpacity onPress={onClose} style={styles.infoModalCloseButton}>
              <Ionicons name="close" size={20} color={colorTokens.textSecondary} />
            </TouchableOpacity>
          </View>

          {/* 等级卡片区域 */}
          <View style={styles.gradesContainer}>
            {currentGrades.map((grade, index) => (
              <SleepGradeCard
                key={index}
                icon={grade.icon}
                grade={grade.grade}
                range={grade.range}
                isActive={grade.isActive}
              />
            ))}
          </View>

          <Text style={[styles.infoModalText, { color: colorTokens.textSecondary }]}>
            {getDescription()}
          </Text>
        </Animated.View>
      </TouchableOpacity>
    </Modal>
  );
};

const styles = StyleSheet.create({
  // Info Modal 样式
  modalOverlay: {
    flex: 1,
    backgroundColor: 'rgba(0, 0, 0, 0.5)',
    justifyContent: 'flex-end',
  },
  infoModalContent: {
    borderTopLeftRadius: 24,
    borderTopRightRadius: 24,
    paddingTop: 12,
    paddingHorizontal: 20,
    paddingBottom: 34,
    minHeight: 200,
    shadowColor: '#000',
    shadowOffset: { width: 0, height: -4 },
    shadowOpacity: 0.1,
    shadowRadius: 16,
    elevation: 8,
  },
  modalHandle: {
    width: 36,
    height: 4,
    backgroundColor: '#D1D5DB',
    borderRadius: 2,
    alignSelf: 'center',
    marginBottom: 20,
  },
  infoModalHeader: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    alignItems: 'center',
    marginBottom: 16,
  },
  infoModalTitle: {
    fontSize: 18,
    fontWeight: '700',
    letterSpacing: -0.3,
  },
  infoModalCloseButton: {
    padding: 4,
  },
  infoModalText: {
    fontSize: 15,
    lineHeight: 22,
    letterSpacing: -0.1,
  },
  // Grade Cards 样式
  gradesContainer: {
    marginBottom: 20,
    gap: 8,
  },
  gradeCard: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    alignItems: 'center',
    paddingHorizontal: 16,
    paddingVertical: 12,
    borderRadius: 12,
    borderWidth: 1,
  },
  gradeCardLeft: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 8,
  },
  gradeText: {
    fontSize: 16,
    fontWeight: '600',
    letterSpacing: -0.2,
  },
  gradeRange: {
    fontSize: 16,
    fontWeight: '700',
    letterSpacing: -0.3,
  },
});