import React, { useState, useEffect } from 'react';
import { View, Platform, Alert, ActivityIndicator } from 'react-native';
import { useTranslation } from 'react-i18next';
import { useTheme } from '~/features/theme/ThemeProvider';
import Text from '~/components/atoms/Text';
import BaseModal from '~/components/atoms/BaseModal';
import Icon from '~/components/atoms/Icon';
import Input from '~/components/atoms/Input';

interface PromptEditModalProps {
  isVisible: boolean;
  onClose: () => void;
  onSave: (title: string, promptText: string) => Promise<void>;
  onDelete?: () => Promise<void>;
  initialTitle?: string;
  initialPromptText?: string;
  currentLanguage?: string;
}

const PromptEditModal: React.FC<PromptEditModalProps> = ({
  isVisible,
  onClose,
  onSave,
  onDelete,
  initialTitle = '',
  initialPromptText = '',
  currentLanguage = 'de'
}) => {
  const { t } = useTranslation();
  const { isDark, themeVariant } = useTheme();
  
  const [title, setTitle] = useState(initialTitle);
  const [promptText, setPromptText] = useState(initialPromptText);
  const [isSaving, setIsSaving] = useState(false);
  const [isDeleting, setIsDeleting] = useState(false);
  
  // Reset form when modal opens with new data
  useEffect(() => {
    if (isVisible) {
      setTitle(initialTitle);
      setPromptText(initialPromptText);
    }
  }, [isVisible, initialTitle, initialPromptText]);
  
  // Handle save action
  const handleSave = async () => {
    if (!title.trim() || !promptText.trim()) {
      Alert.alert(
        t('prompts.validation_error', 'Eingabefehler'),
        t('prompts.all_fields_required', 'Bitte fülle alle Felder aus.')
      );
      return;
    }
    
    try {
      setIsSaving(true);
      await onSave(title, promptText);
      onClose();
    } catch (error) {
      console.debug('Error saving prompt:', error);
      Alert.alert(
        t('prompts.save_error', 'Fehler beim Speichern'),
        t('prompts.try_again', 'Bitte versuche es später erneut.')
      );
    } finally {
      setIsSaving(false);
    }
  };
  
  // Handle delete action with confirmation
  const handleDelete = async () => {
    if (!onDelete) return;
    
    // Show confirmation dialog
    if (Platform.OS === 'ios') {
      Alert.alert(
        t('prompts.delete_confirm_title', 'Prompt löschen'),
        t('prompts.delete_confirm_message', 'Möchtest du diesen Prompt wirklich löschen?'),
        [
          {
            text: t('common.cancel', 'Abbrechen'),
            style: 'cancel'
          },
          {
            text: t('common.delete', 'Löschen'),
            style: 'destructive',
            onPress: async () => {
              try {
                setIsDeleting(true);
                await onDelete();
                onClose();
              } catch (error) {
                console.debug('Error deleting prompt:', error);
                Alert.alert(
                  t('prompts.delete_error', 'Fehler beim Löschen'),
                  t('prompts.try_again', 'Bitte versuche es später erneut.')
                );
              } finally {
                setIsDeleting(false);
              }
            }
          }
        ]
      );
    } else {
      // For Android and other platforms
      Alert.alert(
        t('prompts.delete_confirm_title', 'Prompt löschen'),
        t('prompts.delete_confirm_message', 'Möchtest du diesen Prompt wirklich löschen?'),
        [
          {
            text: t('common.cancel', 'Abbrechen'),
            style: 'cancel'
          },
          {
            text: t('common.delete', 'Löschen'),
            style: 'destructive',
            onPress: async () => {
              try {
                setIsDeleting(true);
                await onDelete();
                onClose();
              } catch (error) {
                console.debug('Error deleting prompt:', error);
                Alert.alert(
                  t('prompts.delete_error', 'Fehler beim Löschen'),
                  t('prompts.try_again', 'Bitte versuche es später erneut.')
                );
              } finally {
                setIsDeleting(false);
              }
            }
          }
        ]
      );
    }
  };
  
  // Theme-Farben werden direkt von den Komponenten verwendet
  
  // Benutzerdefinierter Footer-Inhalt mit Lösch-Button
  const customFooter = onDelete ? (
    <View className='w-full'>
      <View 
        className='bg-red-600 rounded-xl py-3 px-4 items-center justify-center mb-4'
        style={{ opacity: isDeleting ? 0.7 : 1 }}
      >
        {isDeleting ? (
          <ActivityIndicator size='small' color='#FFFFFF' />
        ) : (
          <View className='flex-row items-center justify-center'>
            <Icon name='trash-outline' size={18} color='#FFFFFF' />
            <Text className='text-white font-medium text-base ml-2'>
              {t('common.delete', 'Löschen')}
            </Text>
          </View>
        )}
      </View>
    </View>
  ) : undefined;

  return (
    <BaseModal
      isVisible={isVisible}
      onClose={onClose}
      title={t('prompts.edit_prompt', 'Prompt bearbeiten')}
      animationType='none'
      primaryButtonText={t('common.save', 'Speichern')}
      secondaryButtonText={t('common.cancel', 'Abbrechen')}
      onPrimaryButtonPress={handleSave}
      primaryButtonLoading={isSaving}
      primaryButtonDisabled={isSaving}
      footerContent={customFooter}
    >
      <View className='w-full'>
        <Text className={`text-base font-medium mb-2 ${isDark ? 'text-white' : 'text-gray-800'}`}>
          {t('prompts.title', 'Titel')}
        </Text>
        <Input
          value={title}
          onChangeText={setTitle}
          placeholder={t('prompts.title_placeholder', 'Titel eingeben...')}
          style={{ marginBottom: 16 }}
        />
        
        <Text className={`text-base font-medium mb-2 ${isDark ? 'text-white' : 'text-gray-800'}`}>
          {t('prompts.prompt_text', 'Prompt')}
        </Text>
        <Input
          value={promptText}
          onChangeText={setPromptText}
          placeholder={t('prompts.prompt_placeholder', 'Prompt eingeben...')}
          multiline
          numberOfLines={5}
          textAlignVertical='top'
          style={{ minHeight: 120, marginBottom: 16, textAlignVertical: 'top' }}
        />
      </View>
    </BaseModal>
  );
};

// Keine Styles mehr nötig, da wir NativeWind verwenden

export default PromptEditModal;