import React from 'react';

import { AlertDialog, AlertDialogBody, AlertDialogContent, AlertDialogFooter, AlertDialogHeader, AlertDialogOverlay, Button } from '@chakra-ui/react';
import { useForm } from 'react-hook-form';
import { useMutation, useQueryClient } from 'react-query';

import { ItemsService, UsersService } from '../../client';
import useCustomToast from '../../hooks/useCustomToast';

interface DeleteProps {
    type: string;
    id: number
    isOpen: boolean;
    onClose: () => void;
}

const Delete: React.FC<DeleteProps> = ({ type, id, isOpen, onClose }) => {
    const queryClient = useQueryClient();
    const showToast = useCustomToast();
    const cancelRef = React.useRef<HTMLButtonElement | null>(null);
    const { handleSubmit, formState: { isSubmitting } } = useForm();

    const deleteEntity = async (id: number) => {
        if (type === 'Item') {
            await ItemsService.deleteItem({ id: id });
        } else if (type === 'User') {
            await UsersService.deleteUser({ userId: id });
        } else {
            throw new Error(`Unexpected type: ${type}`);
        }
    }

    const mutation = useMutation(deleteEntity, {
        onSuccess: () => {
            showToast('Success', `The ${type.toLowerCase()} was deleted successfully.`, 'success');
            onClose();
        },
        onError: () => {
            showToast('An error occurred.', `An error occurred while deleting the ${type.toLowerCase()}.`, 'error');
        },
        onSettled: () => {
            queryClient.invalidateQueries(type === 'Item' ? 'items' : 'users');
        }
    })

    const onSubmit = async () => {
        mutation.mutate(id);
    }

    return (
        <>
            <AlertDialog
                isOpen={isOpen}
                onClose={onClose}
                leastDestructiveRef={cancelRef}
                size={{ base: 'sm', md: 'md' }}
                isCentered
            >
                <AlertDialogOverlay>
                    <AlertDialogContent as='form' onSubmit={handleSubmit(onSubmit)}>
                        <AlertDialogHeader>
                            Delete {type}
                        </AlertDialogHeader>

                        <AlertDialogBody>
                            {type === 'User' && <span>All items associated with this user will also be <strong>permantly deleted. </strong></span>}
                            Are you sure? You will not be able to undo this action.
                        </AlertDialogBody>

                        <AlertDialogFooter gap={3}>
                            <Button bg='ui.danger' color='white' _hover={{ opacity: 0.8 }} type='submit' isLoading={isSubmitting}>
                                Delete
                            </Button>
                            <Button ref={cancelRef} onClick={onClose} isDisabled={isSubmitting}>
                                Cancel
                            </Button>
                        </AlertDialogFooter>
                    </AlertDialogContent>
                </AlertDialogOverlay>
            </AlertDialog>
        </>
    )
}

export default Delete;