import { use, useState } from 'react';
import { useEffect } from 'react';
import { render } from 'react-dom';
import Masonry from 'react-masonry-css';
import PanZoom from 'react-easy-panzoom';

interface GalleryProps {
    id: string;
    columns: number;
    closeMenu: () => void;
}

const Gallery = ({ id, columns, closeMenu }: GalleryProps) => {

    const [isSingle, setIsSingle] = useState<boolean>(false);
    const [loaded, setLoaded] = useState({})
    const [selectedImage, setSelectedImage] = useState<string | null>(null);
    const [images, setImages] = useState<string[]>([]);
    const [galleryId, setGalleryId] = useState(id as string);
    const [currentIndex, setCurrentIndex] = useState(0);

    const getData = async () => {
        const thumbnailResponse = await fetch('/api/galleries/' + String(galleryId) + '/images');
        const thumbnailUrl = await thumbnailResponse.json() as string[];
        setImages(thumbnailUrl);
    }

    const next = () => {
        if (currentIndex < images.length - 1) {
            setCurrentIndex(currentIndex + 1);
        } else {
            setCurrentIndex(0);
        }
    }

    const previous = () => {
        if (currentIndex > 0) {
            setCurrentIndex(currentIndex - 1);
        } else {
            setCurrentIndex(images.length - 1);
        }
    }

    const renderButtons = () => {
        return (
            <>

                <div className="z-20 fixed left-6 bottom-4 w-100 h-20  bg-purple-900 bg-opacity-40 animate-in rounded-3xl" style={{ backdropFilter: 'blur(10px)' }}>
                    <div className='grid grid-cols-4 gap-4 pl-32 pr-4 pt-4 m-1 '>

                        <button
                            className={`justify-center text-center w-full animate-in animate-once animate-duration-1000 animate-ease-out animate-reverse mb-4 py-2 px-4 rounded-lg no-underline flex items-center z-50 ${!selectedImage ? 'opacity-50 cursor-not-allowed bg-gray-800' : 'bg-pink-700 hover:bg-pink-600'}`}
                            onClick={() => previous()}
                            disabled={!selectedImage}
                        >
                            Previous
                        </button>
                        <button
                            className={`justify-center text-center w-full animate-in animate-once animate-duration-1000 animate-ease-out animate-reverse mb-4 py-2 px-4 rounded-lg no-underline flex items-center z-50 ${!selectedImage ? 'opacity-50 cursor-not-allowed bg-gray-800' : 'bg-pink-700 hover:bg-pink-600'}`}
                            onClick={() => next()}
                            disabled={!selectedImage}
                        >
                            Next
                        </button>
                        <button
                            className={`justify-center text-center w-full animate-in animate-once animate-duration-1000 animate-ease-out animate-reverse mb-4 py-2 px-4 rounded-lg no-underline flex items-center z-50 ${!selectedImage ? 'opacity-50 cursor-not-allowed bg-gray-800' : 'bg-purple-700 hover:bg-purple-600'}`}
                            onClick={() => selectedImage && handleDownload(selectedImage)}
                            disabled={!selectedImage}
                        >
                            Download
                        </button>
                        <button
                            className={`justify-center text-center w-full animate-in animate-once animate-duration-1000 animate-ease-out animate-reverse mb-4 py-2 px-4 rounded-lg no-underline flex items-center z-50 ${!selectedImage ? 'opacity-50 cursor-not-allowed bg-gray-800' : 'bg-purple-700 hover:bg-purple-600'}`}
                            onClick={() => selectedImage && open()}
                            disabled={!selectedImage}
                        >
                            Open
                        </button>
                    </div>
                </div>
            </>
        );
    };
    const handleDownload = (image: string) => {
        const link = document.createElement('a');
        link.href = image;
        link.download = 'image.jpg';  // or any other filename
        link.style.display = 'none';

        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
    };
    useEffect(() => {
        getData();
        const handleKeyDown = (event: KeyboardEvent) => {
            switch (event.key) {
                case 'ArrowLeft':
                case 'a':
                case 'A':
                    previous();
                    break;
                case 'ArrowRight':
                case 'd':
                case 'D':
                    next();
                    break;
                case 'Escape':
                    close();
                    break;
                default:
                    break;
            }
        };

        setSelectedImage(images[currentIndex]);
        window.addEventListener('keydown', handleKeyDown);

        // Clean up the event listener when the component is unmounted
        return () => {
            window.removeEventListener('keydown', handleKeyDown);
        };

    }, [selectedImage,currentIndex]);

    const handleClick = (image: string) => {
        setSelectedImage(image);
        setCurrentIndex(images.indexOf(image));
    };

    const open = () => {
        if (selectedImage === null) return;
        console.log(selectedImage)
        let base64Image = selectedImage.split(';base64,').pop();
        if (!base64Image) return;
        let blob = new Blob([Uint8Array.from(atob(base64Image), c => c.charCodeAt(0))], { type: 'image/jpeg' }); // adjust the type as needed
        let url = URL.createObjectURL(blob);
        window.open(url, '_blank');
    }

    const close = () => {
        if (selectedImage != null) {
            setSelectedImage(null);
            setImages([]);
        }
        else {
            closeMenu();
        }
    }

    const breakpointColumnsObj = {
        default: 3
    };
    return (
        <div className="z-20">
            <button
                className="fixed bg-purple-800 hover:bg-purple-700 left-10 bottom-5 animate-in animate-once animate-duration-1000 animate-ease-out animate-reverse mb-4 py-2 px-4 rounded-lg no-underline flex items-center z-50"
                onClick={() => close()}
            >
                <svg
                    xmlns="http://www.w3.org/2000/svg"
                    width="24"
                    height="24"
                    viewBox="0 0 24 24"
                    fill="none"
                    stroke="currentColor"
                    strokeWidth="2"
                    strokeLinecap="round"
                    strokeLinejoin="round"
                    className="mr-2 h-4 w-4 transition-transform group-hover:-translate-x-1"
                >
                    <polyline points="15 18 9 12 15 6" />
                </svg>{" "}
                Back
            </button>

            {renderButtons()}
            {selectedImage ? (
                <PanZoom
                    autoCenter={true}
                >
                    <img
                        src={images[currentIndex]}
                        style={{ objectFit: "contain", maxWidth: "100%", maxHeight: "calc(100vh - 20px)", pointerEvents:"none" }}
                        className="cursor-pointer animate-in w-full h-auto"
                        onClick={() => close()}
                    />
                </PanZoom>
            ) : (
                <div
                    className="z-30 pb-10"
                    style={{
                        display: selectedImage ? "flex" : "block",
                        alignItems: "flex-start",
                    }}
                >
                    <Masonry
                        breakpointCols={columns}
                        className="my-masonry-grid"
                        style={{ width: selectedImage ? "50%" : "100%" }}
                    >
                        {images
                            .filter((img) => img !== selectedImage)
                            .map((image, index) => (
                                <img
                                    src={image}
                                    onClick={() => handleClick(image)}
                                    className={`animate-in animate-once animate-duration-1000 animate-ease-out animate-reverse hover:scale-105 p-2 cursor-pointer my-2 transition-all opacity-100 duration-500 ease-in-out transform`}
                                />
                            ))}
                    </Masonry>
                    <>
                    </>
                </div>
            )}
        </div>
    );
}

export default Gallery;