import { ThemedText } from '@/components/ThemedText';
import { useAppDispatch } from '@/hooks/redux';
import { useI18n } from '@/hooks/useI18n';
import { skipMedicationAction, takeMedicationAction } from '@/store/medicationsSlice';
import type { MedicationDisplayItem } from '@/types/medication';
import { Ionicons } from '@expo/vector-icons';
import dayjs, { Dayjs } from 'dayjs';
import { GlassView, isLiquidGlassAvailable } from 'expo-glass-effect';
import { Image } from 'expo-image';
import React, { useEffect, useState } from 'react';
import { Alert, StyleSheet, TouchableOpacity, View } from 'react-native';

export type MedicationCardProps = {
  medication: MedicationDisplayItem;
  colors: (typeof import('@/constants/Colors').Colors)[keyof typeof import('@/constants/Colors').Colors];
  selectedDate: Dayjs;
  onOpenDetails?: (medication: MedicationDisplayItem) => void;
  onCelebrate?: () => void;
};

export function MedicationCard({ medication, colors, selectedDate, onOpenDetails, onCelebrate }: MedicationCardProps) {
  const dispatch = useAppDispatch();
  const { t } = useI18n();
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [imageError, setImageError] = useState(false);
  
  const scheduledDate = dayjs(`${selectedDate.format('YYYY-MM-DD')} ${medication.scheduledTime}`);
  const timeDiffMinutes = scheduledDate.diff(dayjs(), 'minute');

  // 当药品变化时重置图片错误状态
  useEffect(() => {
    setImageError(false);
  }, [medication.id]);

  /**
   * 处理服药操作
   */
  const handleTakeMedication = async () => {
    // 检查 recordId 是否存在
    if (!medication.recordId || isSubmitting) {
      return;
    }

    // 判断是否早于服药时间1小时以上
    if (timeDiffMinutes > 60) {
      // 显示二次确认弹窗
      Alert.alert(
        t('medications.card.earlyTakeAlert.title'),
        t('medications.card.earlyTakeAlert.message', { time: medication.scheduledTime }),
        [
          {
            text: t('medications.card.earlyTakeAlert.cancel'),
            style: 'cancel',
            onPress: () => {
              // 用户取消，不执行任何操作
              console.log('用户取消提前服药');
            },
          },
          {
            text: t('medications.card.earlyTakeAlert.confirm'),
            style: 'default',
            onPress: () => {
              // 用户确认，执行服药逻辑
              executeTakeMedication(medication.recordId!);
            },
          },
        ]
      );
    } else {
      // 在正常时间范围内，直接执行服药逻辑
      executeTakeMedication(medication.recordId);
    }
  };

  /**
   * 执行服药操作（提取公共逻辑）
   */
  const executeTakeMedication = async (recordId: string) => {
    setIsSubmitting(true);
    
    try {
      // 调用 Redux action 标记为已服用
      await dispatch(takeMedicationAction({
        recordId: recordId,
        actualTime: new Date().toISOString(),
      })).unwrap();
      onCelebrate?.();
      
      // 可选：显示成功提示
      // Alert.alert('服药成功', '已记录本次服药');
    } catch (error) {
      console.error('[MEDICATION_CARD] 服药操作失败', error);
      Alert.alert(
        t('medications.card.takeError.title'),
        error instanceof Error ? error.message : t('medications.card.takeError.message'),
        [{ text: t('medications.card.takeError.confirm') }]
      );
    } finally {
      setIsSubmitting(false);
    }
  };

  /**
   * 处理跳过操作
   */
  const handleSkipMedication = async () => {
    // 检查 recordId 是否存在
    if (!medication.recordId || isSubmitting) {
      return;
    }

    // 显示二次确认弹窗
    Alert.alert(
      t('medications.card.skipAlert.title'),
      t('medications.card.skipAlert.message'),
      [
        {
          text: t('medications.card.skipAlert.cancel'),
          style: 'cancel',
          onPress: () => {
            console.log('用户取消跳过');
          },
        },
        {
          text: t('medications.card.skipAlert.confirm'),
          style: 'destructive',
          onPress: () => {
            executeSkipMedication(medication.recordId!);
          },
        },
      ]
    );
  };

  /**
   * 执行跳过操作
   */
  const executeSkipMedication = async (recordId: string) => {
    setIsSubmitting(true);
    
    try {
      // 调用 Redux action 标记为已跳过
      await dispatch(skipMedicationAction({
        recordId: recordId,
      })).unwrap();
      
      // 可选：显示成功提示
      // Alert.alert('跳过成功', '已跳过本次用药');
    } catch (error) {
      console.error('[MEDICATION_CARD] 跳过操作失败', error);
      Alert.alert(
        t('medications.card.skipError.title'),
        error instanceof Error ? error.message : t('medications.card.skipError.message'),
        [{ text: t('medications.card.skipError.confirm') }]
      );
    } finally {
      setIsSubmitting(false);
    }
  };

  const renderStatusBadge = () => {
    if (medication.status === 'missed') {
      return (
        <View style={[styles.statusChip, styles.statusChipMissed]}>
          <ThemedText style={styles.statusChipText}>{t('medications.card.status.missed')}</ThemedText>
        </View>
      );
    }

    if (medication.status === 'upcoming') {
      if (timeDiffMinutes <= 0) {
        return (
          <View style={[styles.statusChip, styles.statusChipUpcoming]}>
            <Ionicons name="time-outline" size={14} color="#fff" />
            <ThemedText style={styles.statusChipText}>{t('medications.card.status.timeToTake')}</ThemedText>
          </View>
        );
      }

      const hours = Math.floor(timeDiffMinutes / 60);
      const minutes = timeDiffMinutes % 60;
      const formatted =
        hours > 0 ? `${hours}小时${minutes > 0 ? `${minutes}分钟` : ''}` : `${minutes}分钟`;

      return (
        <View style={[styles.statusChip, styles.statusChipUpcoming]}>
          <Ionicons name="time-outline" size={14} color="#fff" />
          <ThemedText style={styles.statusChipText}>{t('medications.card.status.remaining', { time: formatted })}</ThemedText>
        </View>
      );
    }

    return null;
  };

  const renderAction = () => {
    // 已服用状态
    if (medication.status === 'taken') {
      return (
        <View style={[styles.actionButton, styles.actionButtonTaken]}>
          <Ionicons name="checkmark-circle" size={18} color="#fff" />
          <ThemedText style={styles.actionButtonText}>{t('medications.card.action.taken')}</ThemedText>
        </View>
      );
    }

    // 已跳过状态
    if (medication.status === 'skipped') {
      return (
        <View style={[styles.actionButton, styles.actionButtonSkipped]}>
          <Ionicons name="close-circle" size={18} color="#fff" />
          <ThemedText style={styles.actionButtonText}>{t('medications.card.action.skipped')}</ThemedText>
        </View>
      );
    }

    // 待服用或已错过状态，显示操作按钮
    return (
      <View style={styles.actionButtonsRow}>
        {/* 跳过按钮 */}
        <TouchableOpacity
          activeOpacity={0.7}
          onPress={handleSkipMedication}
          disabled={isSubmitting}
          style={styles.skipButtonWrapper}
        >
          {isLiquidGlassAvailable() ? (
            <GlassView
              style={[styles.actionButton, styles.actionButtonSkip]}
              glassEffectStyle="clear"
              tintColor="rgba(156, 163, 175, 0.2)"
              isInteractive={!isSubmitting}
            >
              <ThemedText style={styles.actionButtonTextSkip}>
                {t('medications.card.action.skip')}
              </ThemedText>
            </GlassView>
          ) : (
            <View style={[styles.actionButton, styles.actionButtonSkip, styles.fallbackActionButtonSkip]}>
              <ThemedText style={styles.actionButtonTextSkip}>
                {t('medications.card.action.skip')}
              </ThemedText>
            </View>
          )}
        </TouchableOpacity>

        {/* 立即服用按钮 */}
        <TouchableOpacity
          activeOpacity={0.7}
          onPress={handleTakeMedication}
          disabled={isSubmitting}
          style={styles.takeButtonWrapper}
        >
          {isLiquidGlassAvailable() ? (
            <GlassView
              style={[styles.actionButton, styles.actionButtonUpcoming]}
              glassEffectStyle="clear"
              tintColor="rgba(19, 99, 255, 0.3)"
              isInteractive={!isSubmitting}
            >
              <ThemedText style={styles.actionButtonText}>
                {isSubmitting ? t('medications.card.action.submitting') : t('medications.card.action.takeNow')}
              </ThemedText>
            </GlassView>
          ) : (
            <View style={[styles.actionButton, styles.actionButtonUpcoming, styles.fallbackActionButton]}>
              <ThemedText style={styles.actionButtonText}>
                {isSubmitting ? t('medications.card.action.submitting') : t('medications.card.action.takeNow')}
              </ThemedText>
            </View>
          )}
        </TouchableOpacity>
      </View>
    );
  };

  const statusChip = renderStatusBadge();


  return (
    <TouchableOpacity
      style={[styles.card, { shadowColor: colors.text }]}
      activeOpacity={onOpenDetails ? 0.92 : 1}
      onPress={() => onOpenDetails?.(medication)}
      disabled={!onOpenDetails}
    >
      <View style={[styles.cardSurface, { backgroundColor: colors.surface }]}>
        {statusChip ? <View style={styles.statusChipWrapper}>{statusChip}</View> : null}
        <View style={styles.cardBody}>
          <View style={styles.cardContent}>
            <View style={styles.thumbnailWrapper}>
              <View style={styles.thumbnailSurface}>
                <Image
                  source={medication.image}
                  style={styles.thumbnailImage}
                  onError={() => setImageError(true)}
                  key={medication.id} // 重新渲染时重置状态
                />
              </View>
            </View>
            <View style={styles.infoSection}>
              <ThemedText style={[styles.cardTitle, { color: colors.text }]}>
                {medication.name}
              </ThemedText>
              <ThemedText style={[styles.cardDosage, { color: colors.textSecondary }]}>
                {medication.dosage}
              </ThemedText>
              <View style={styles.scheduleRow}>
                <Ionicons
                  name="time-outline"
                  size={14}
                  color={colors.textSecondary}
                  style={styles.scheduleIcon}
                />
                <ThemedText style={[styles.cardSchedule, { color: colors.textSecondary }]}>
                  {medication.scheduledTime} | {medication.frequency}
                </ThemedText>
              </View>
              <View style={styles.actionContainer}>{renderAction()}</View>
            </View>
          </View>
        </View>
      </View>
    </TouchableOpacity>
  );
}

const styles = StyleSheet.create({
  card: {
    borderRadius: 18,
    position: 'relative',
  },
  cardSurface: {
    borderRadius: 18,
    overflow: 'hidden',
  },
  cardBody: {
    paddingHorizontal: 10,
    paddingBottom: 10,
    paddingTop: 10,
  },
  cardContent: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 20,
  },
  thumbnailWrapper: {
    width: 148,
    height: 110,
  },
  thumbnailSurface: {
    flex: 1,
    backgroundColor: '#F1F4FF',
    alignItems: 'center',
    justifyContent: 'center',
    overflow: 'hidden',
    borderRadius: 18,
  },
  thumbnailImage: {
    width: '70%',
    height: '70%',
    resizeMode: 'contain',
  },
  infoSection: {
    flex: 1,
  },
  cardTitle: {
    fontSize: 16,
    fontWeight: '700',
  },
  cardDosage: {
    fontSize: 12,
    marginTop: 4,
  },
  scheduleRow: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 6,
  },
  cardSchedule: {
    fontSize: 12,
  },
  scheduleIcon: {
    marginTop: -1,
  },
  actionContainer: {
    marginTop: 8,
  },
  actionButtonsRow: {
    flexDirection: 'row',
    gap: 8,
  },
  skipButtonWrapper: {
    flex: 1,
  },
  takeButtonWrapper: {
    flex: 2,
  },
  actionButton: {
    alignSelf: 'stretch',
    flexDirection: 'row',
    alignItems: 'center',
    gap: 6,
    justifyContent: 'center',
    height: 38,
    borderRadius: 10,
    overflow: 'hidden',
  },
  actionButtonUpcoming: {
    backgroundColor: '#1363FF',
  },
  actionButtonTaken: {
    backgroundColor: '#1FBF4B',
  },
  actionButtonSkipped: {
    backgroundColor: '#9CA3AF',
  },
  actionButtonSkip: {
    backgroundColor: '#E5E7EB',
  },
  actionButtonMissed: {
    backgroundColor: '#9CA3AF',
  },
  fallbackActionButton: {
    borderWidth: 1,
    borderColor: 'rgba(19, 99, 255, 0.3)',
    backgroundColor: 'rgba(19, 99, 255, 0.9)',
  },
  fallbackActionButtonSkip: {
    borderWidth: 1,
    borderColor: 'rgba(156, 163, 175, 0.2)',
    backgroundColor: 'rgba(229, 231, 235, 0.9)',
  },
  fallbackActionButtonMissed: {
    borderWidth: 1,
    borderColor: 'rgba(156, 163, 175, 0.3)',
    backgroundColor: 'rgba(156, 163, 175, 0.9)',
  },
  actionButtonText: {
    fontSize: 14,
    fontWeight: '700',
    color: '#fff',
  },
  actionButtonTextSkip: {
    fontSize: 14,
    fontWeight: '600',
    color: '#6B7280',
  },
  actionButtonTextMissed: {
    fontSize: 14,
    fontWeight: '700',
    color: '#fff',
  },
  statusChipWrapper: {
    position: 'absolute',
    top: 0,
    right: 0,
  },
  statusChip: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 6,
    paddingHorizontal: 10,
    height: 28,
    borderBottomLeftRadius: 20,
    borderTopRightRadius: 0,
    borderBottomRightRadius: 0,
    backgroundColor: '#1363FF',
  },
  statusChipUpcoming: {
    backgroundColor: '#1363FF',
  },
  statusChipMissed: {
    backgroundColor: '#FF3B30',
  },
  statusChipText: {
    fontSize: 10,
    fontWeight: '600',
    color: '#fff',
  },
});