import { CloseCircle, DocumentUpload, Gallery } from 'iconsax-react'
import { type FC, useCallback, useEffect, useState } from 'react'
import { useDropzone } from 'react-dropzone';
import { clx } from '../helpers/utils';

type Props = {
    label: string;
    onChange: (file: File[]) => void;
    isMultiple?: boolean;
    isFile?: boolean,
    preview?: string[],
    onChangePreview?: (preview: string[]) => void,
    getCover?: (url: string) => void,
    coverUrl?: string,
    /** نمایش وضعیت بارگذاری داخل باکس آپلود */
    isLoading?: boolean,
    loadingLabel?: string,
    /** بدون پیش‌نمایش زیر باکس (مثلاً گالری جداگانه دارد) */
    hidePreview?: boolean,
}

const UploadBoxDraggble: FC<Props> = (props: Props) => {

    const [files, setFiles] = useState<File[]>([]);
    const [perviews, setPerviews] = useState<string[]>(props.preview ?? []);
    const [cover, setCover] = useState<string>(props.coverUrl ?? "");

    const onDrop = useCallback((acceptedFiles: File[]) => {
        if (props.hidePreview) {
            props.onChange(acceptedFiles);
            return;
        }
        // وقتی parent با preview و onChangePreview مدیریت می‌کند، فقط onChange بزن تا فقط یک ردیف (perviews) نمایش داده شود
        if (props.preview !== undefined && props.onChangePreview) {
            props.onChange(acceptedFiles);
            return;
        }
        if (props.isMultiple) {
            const array = [...files, ...acceptedFiles];
            setFiles(array);
            props.onChange(array);
        } else {
            setFiles([acceptedFiles[0]]);
            props.onChange([acceptedFiles[0]]);
        }
        // eslint-disable-next-line react-hooks/exhaustive-deps
    }, [files]);
    const { getRootProps, getInputProps } = useDropzone({
        onDrop,
        disabled: props.isLoading,
    })

    const handleDelete = (index: number) => {
        const array = [...files]
        array.splice(index, 1)
        setFiles(array)
        props.onChange(array)
    }

    const handleDeletePreview = (index: number) => {
        const array = [...perviews];
        array.splice(index, 1);
        setPerviews(array);
        if (props.onChangePreview) {
            props.onChangePreview(array);
        }
    }

    useEffect(() => {
        if (props.preview) {
            setPerviews(props.preview);
        }
    }, [props.preview]);

    useEffect(() => {
        setCover(props.coverUrl ? props.coverUrl : '')
    }, [props.coverUrl])


    return (
        <div>
            <div
                {...getRootProps()}
                className={clx(
                    'relative w-full py-8 border border-dashed border-description flex flex-col justify-center items-center gap-4 rounded-2xl',
                    props.isLoading && 'pointer-events-none opacity-80',
                )}
            >
                <input {...getInputProps()} />
                {props.isLoading ? (
                    <>
                        <span className="h-8 w-8 animate-spin rounded-full border-2 border-gray-300 border-t-black" />
                        <div className="text-description text-xs">
                            {props.loadingLabel ?? 'در حال آپلود...'}
                        </div>
                    </>
                ) : (
                    <>
                        <Gallery
                            className='size-8'
                            color='#8C90A3'
                        />
                        <div className='text-description text-xs'>
                            {props.label}
                        </div>

                        <div className='flex items-center gap-2'>
                            <DocumentUpload
                                className='size-4'
                                color='black'
                            />
                            <div className='text-xs'>آپلود</div>
                        </div>
                    </>
                )}
            </div>

            {
                !props.hidePreview && (files.length > 0 || perviews.length > 0) ? (
                    <div className='mt-4 flex gap-4 items-center'>
                        {
                            perviews && perviews.map((item, index) => {
                                return (
                                    <div key={index} className='flex items-center gap-2'>
                                        <div key={index} className='flex relative items-center gap-2'>
                                            <img onClick={() => {
                                                if (props.getCover) {
                                                    setCover(item)
                                                    props.getCover(item)
                                                }
                                            }} src={item}
                                                className={clx(
                                                    'size-10 rounded-full object-cover',
                                                    cover === item ? 'border-2 border-red-400' : ''
                                                )} />
                                            <div onClick={() => handleDeletePreview(index)} className='absolute -left-2 -top-2 shadow-md bg-white size-5 rounded-full flex justify-center items-center'>
                                                <CloseCircle className='size-4 ' color='red' />
                                            </div>
                                        </div>
                                    </div>
                                )
                            })
                        }
                        {
                            files.map((file, index) => {
                                if (props.isFile) {
                                    return (
                                        <div key={index} className='flex border p-2 rounded-lg items-center gap-2'>
                                            <div className='flex relative items-center gap-2'>
                                                <div className='text-xs'>{file.name}</div>
                                                <div className='absolute -left-4 -top-4 shadow-md bg-white size-5 rounded-full flex justify-center items-center'>
                                                    <CloseCircle onClick={() => handleDelete(index)} className='size-4 ' color='red' />
                                                </div>
                                            </div>
                                        </div>
                                    )
                                }
                                else
                                    return (
                                        <div key={index} className='flex items-center gap-2'>
                                            <div key={index} className='flex relative items-center gap-2'>
                                                <img src={URL.createObjectURL(file)} alt={file.name} className='size-10 rounded-full object-cover' />
                                                <div className='absolute -left-2 -top-2 shadow-md bg-white size-5 rounded-full flex justify-center items-center'>
                                                    <CloseCircle onClick={() => handleDelete(index)} className='size-4 ' color='red' />
                                                </div>
                                            </div>
                                        </div>
                                    )
                            })
                        }
                    </div>
                ) : null
            }

        </div>
    )
}

export default UploadBoxDraggble