import clsx from 'clsx';
import { AnimatePresence, HTMLMotionProps, motion, Variants } from 'motion/react';
import { Fragment, useEffect, useRef } from 'react';
import { generatePath, Link } from 'react-router';

import styles from './full-screen-player-image.module.css';

import { useItemImageUrl } from '/@/renderer/components/item-image/item-image';
import { AppRoute } from '/@/renderer/router/routes';
import { useNativeAspectRatio, usePlayerData, usePlayerSong } from '/@/renderer/store';
import { Badge } from '/@/shared/components/badge/badge';
import { Center } from '/@/shared/components/center/center';
import { Flex } from '/@/shared/components/flex/flex';
import { Group } from '/@/shared/components/group/group';
import { Icon } from '/@/shared/components/icon/icon';
import { Stack } from '/@/shared/components/stack/stack';
import { Text } from '/@/shared/components/text/text';
import { useSetState } from '/@/shared/hooks/use-set-state';
import { LibraryItem } from '/@/shared/types/domain-types';

const imageVariants: Variants = {
    closed: {
        opacity: 0,
        transition: {
            duration: 0.8,
            ease: 'linear',
        },
    },
    initial: {
        opacity: 0,
    },
    open: (custom) => {
        const { isOpen } = custom;
        return {
            opacity: isOpen ? 1 : 0,
            transition: {
                duration: 0.4,
                ease: 'linear',
            },
        };
    },
};

const MotionImage = motion.img;

const ImageWithPlaceholder = ({
    className,
    ...props
}: HTMLMotionProps<'img'> & { placeholder?: string }) => {
    const nativeAspectRatio = useNativeAspectRatio();

    if (!props.src) {
        return (
            <Center
                style={{
                    background: 'var(--theme-colors-surface)',
                    borderRadius: 'var(--theme-card-default-radius)',
                    height: '100%',
                    width: '100%',
                }}
            >
                <Icon color="muted" icon="itemAlbum" size="25%" />
            </Center>
        );
    }

    return (
        <MotionImage
            className={clsx(styles.image, className)}
            style={{
                objectFit: nativeAspectRatio ? 'contain' : 'cover',
                width: nativeAspectRatio ? 'auto' : '100%',
            }}
            {...props}
        />
    );
};

export const FullScreenPlayerImage = () => {
    const mainImageRef = useRef<HTMLImageElement | null>(null);

    const currentSong = usePlayerSong();
    const { nextSong } = usePlayerData();

    const currentImageUrl = useItemImageUrl({
        id: currentSong?.imageId || undefined,
        itemType: LibraryItem.SONG,
        serverId: currentSong?._serverId,
        type: 'fullScreenPlayer',
    });

    const nextImageUrl = useItemImageUrl({
        id: nextSong?.imageId || undefined,
        itemType: LibraryItem.SONG,
        serverId: nextSong?._serverId,
        type: 'fullScreenPlayer',
    });

    const [imageState, setImageState] = useSetState({
        bottomImage: nextImageUrl,
        current: 0,
        topImage: currentImageUrl,
    });

    // Track previous song to detect changes
    const previousSongRef = useRef<string | undefined>(currentSong?._uniqueId);
    const imageStateRef = useRef(imageState);

    // Keep ref in sync
    useEffect(() => {
        imageStateRef.current = imageState;
    }, [imageState]);

    // Update images when song or size changes
    useEffect(() => {
        if (currentSong?._uniqueId === previousSongRef.current) {
            return;
        }

        const isTop = imageStateRef.current.current === 0;

        setImageState({
            bottomImage: isTop ? currentImageUrl : nextImageUrl,
            current: isTop ? 1 : 0,
            topImage: isTop ? nextImageUrl : currentImageUrl,
        });

        previousSongRef.current = currentSong?._uniqueId;
    }, [currentSong?._uniqueId, currentImageUrl, nextSong?._uniqueId, nextImageUrl, setImageState]);

    return (
        <Flex
            align="center"
            className={clsx(styles.playerContainer, 'full-screen-player-image-container')}
            direction="column"
            justify="flex-start"
            p="1rem"
        >
            <div className={styles.imageContainer} ref={mainImageRef}>
                <AnimatePresence initial={false} mode="sync">
                    {imageState.current === 0 && (
                        <ImageWithPlaceholder
                            animate="open"
                            className="full-screen-player-image"
                            custom={{ isOpen: imageState.current === 0 }}
                            draggable={false}
                            exit="closed"
                            initial="closed"
                            key={`top-${currentSong?._uniqueId || 'none'}`}
                            placeholder="var(--theme-colors-foreground-muted)"
                            src={imageState.topImage || ''}
                            variants={imageVariants}
                        />
                    )}

                    {imageState.current === 1 && (
                        <ImageWithPlaceholder
                            animate="open"
                            className="full-screen-player-image"
                            custom={{ isOpen: imageState.current === 1 }}
                            draggable={false}
                            exit="closed"
                            initial="closed"
                            key={`bottom-${currentSong?._uniqueId || 'none'}`}
                            placeholder="var(--theme-colors-foreground-muted)"
                            src={imageState.bottomImage || ''}
                            variants={imageVariants}
                        />
                    )}
                </AnimatePresence>
            </div>
            <Stack className={styles.metadataContainer} gap="md" maw="100%">
                <Text fw={900} lh="1.2" overflow="hidden" size="4xl" w="100%">
                    {currentSong?.name}
                </Text>
                <Text
                    component={Link}
                    isLink
                    overflow="hidden"
                    size="xl"
                    to={generatePath(AppRoute.LIBRARY_ALBUMS_DETAIL, {
                        albumId: currentSong?.albumId || '',
                    })}
                    w="100%"
                >
                    {currentSong?.album}
                </Text>
                <Text key="fs-artists">
                    {currentSong?.artists?.map((artist, index) => (
                        <Fragment key={`fs-artist-${artist.id}`}>
                            {index > 0 && (
                                <Text
                                    style={{
                                        display: 'inline-block',
                                        padding: '0 0.5rem',
                                    }}
                                >
                                    •
                                </Text>
                            )}
                            <Text
                                component={Link}
                                isLink
                                to={generatePath(AppRoute.LIBRARY_ALBUM_ARTISTS_DETAIL, {
                                    albumArtistId: artist.id,
                                })}
                            >
                                {artist.name}
                            </Text>
                        </Fragment>
                    ))}
                </Text>
                <Group justify="center" mt="sm">
                    {currentSong?.container && (
                        <Badge variant="transparent">{currentSong?.container}</Badge>
                    )}
                    {currentSong?.releaseYear && (
                        <Badge variant="transparent">{currentSong?.releaseYear}</Badge>
                    )}
                </Group>
            </Stack>
        </Flex>
    );
};