import {useState} from 'react';
import {useTranslation} from 'react-i18next';
import {Clock, Ellipsis, ExternalLink, Eye, EyeOff, Gamepad2, Image as ImageIcon, ImageOff, Merge, PanelTop, PencilLine, RotateCcw, Timer} from 'lucide-react';
import {toast} from 'sonner';

import {Badge} from '@/components/ui/badge';
import {Button} from '@/components/ui/button';
import {Card} from '@/components/ui/card';
import {
    DropdownMenu,
    DropdownMenuContent,
    DropdownMenuItem,
    DropdownMenuSeparator,
    DropdownMenuTrigger,
} from '@/components/ui/dropdown-menu';
import {cn} from '@/lib/utils';
import GameCover from './GameCover.jsx';
import FitText from './FitText.jsx';
import ComingBadge from './ComingBadge.jsx';
import ProfileArtItems from './ProfileArtItems.jsx';
import RatingStars from './RatingStars.jsx';
import StatusMenu from './StatusMenu.jsx';
import TimeToBeat from './TimeToBeat.jsx';
import useSaveAppearance from '../hooks/useSaveAppearance.js';
import useSaveBacklogField from '../hooks/useSaveBacklogField.js';
import useSetStatus from '../hooks/useSetStatus.js';
import {usePreferences} from '../context/PreferencesContext.jsx';
import {UNDO_MS} from '../utils/backlog.js';
import {formatPlaytime} from '../utils/games.js';
import {setGameHidden} from '../utils/hiddenGames.js';
import {isSteamKey} from '../utils/manualGames.js';
import {platformLabel} from '../utils/platforms.js';
import {coverEffect, detailEffect} from '../utils/rewards.js';

const SPEEDRUN_PREFIX = 'https://www.speedrun.com/';
// The spans of each completed effect decoration; effects.css places them.
const DETAIL_ELEMENTS = {'fx-detail-gold-shine': 8, 'fx-detail-neon-pulse': 1, 'fx-detail-holo': 1, 'fx-detail-ember': 6, 'fx-detail-platinum': 6};

/**
 * Status and rating are edited here and save at once. A status change needs no points check: GameDetail's
 * GamePointsLine sees the new status and does it.
 *
 * @param onSaved gets the saved backlog entry after a status or rating change
 */
export default function GameHeroCard({game, auditor, profileStyle, onCorrect, onMerge, onHiddenChanged, onProfileStyleSaved, onSaved}) {
    const {t} = useTranslation();
    const {appearance, equipped} = usePreferences();
    const saveAppearance = useSaveAppearance();
    const [hiding, setHiding] = useState(false);
    const {setStatus, busy: statusBusy} = useSetStatus(game.appid, {onChanged: onSaved});
    const {save, pending, busy: ratingBusy} = useSaveBacklogField(game.appid, {onSaved});

    const onSteam = isSteamKey(game.appid);
    // Core checks the link too; a link from the API must never run script.
    const speedrunUrl = typeof game.speedrunUrl === 'string' && game.speedrunUrl.startsWith(SPEEDRUN_PREFIX)
        ? game.speedrunUrl : null;
    const isBackground = appearance.backgroundAppid === game.appid;
    const isBanner = appearance.showBanner && appearance.bannerAppid === game.appid;
    const detailFx = detailEffect(equipped, game.status);

    const applyHidden = async (hidden, {undoable = false} = {}) => {
        setHiding(true);
        try {
            const response = await setGameHidden(game.appid, hidden);
            if (response.status === 401) return;
            if (!response.ok) {
                toast.error(t('GAME_DETAIL.HIDE_ERROR'));
                return;
            }
            onHiddenChanged(hidden);
            const message = t(hidden ? 'GAME_DETAIL.HIDDEN_TOAST' : 'GAME_DETAIL.SHOWN_TOAST');
            if (undoable) {
                toast.success(message, {duration: UNDO_MS, action: {label: t('MANUAL_GAME.UNDO'), onClick: () => applyHidden(!hidden)}});
            } else {
                toast.success(message);
            }
        } catch (err) {
            console.error('Hide game error:', err);
            toast.error(t('INFO.ERROR.NETWORK_FAILURE'));
        } finally {
            setHiding(false);
        }
    };

    return (
        <Card className="relative overflow-hidden p-0 gap-0 md:flex-row">
            {detailFx && (
                <div aria-hidden="true" className={cn('fx pointer-events-none absolute inset-0', detailFx)}>
                    {Array.from({length: DETAIL_ELEMENTS[detailFx]}, (_, i) => <span key={i}/>)}
                </div>
            )}
            <GameCover appid={game.appid} imageUrl={game.imageUrl} fx={coverEffect(equipped, game.status)}
                       className="w-full rounded-none md:w-96 md:shrink-0"/>
            <div className="relative flex flex-1 flex-col justify-between gap-4 p-6">
                <div>
                    <h1 className="@container text-2xl md:text-3xl font-bold tracking-tight">
                        <FitText wrapOnDesktop text={game.name ?? `App ${game.appid}`}/>
                    </h1>
                    <div className="mt-3 flex flex-wrap gap-2">
                        <Badge variant="secondary" className="tabular-nums">
                            <Clock className="size-3"/>
                            {t('GAME_DETAIL.PLAYTIME', {time: formatPlaytime(game.totalPlaytimeMinutes ?? game.playtimeMinutes)})}
                        </Badge>
                        <ComingBadge game={game}/>
                        <StatusMenu status={game.status} busy={statusBusy}
                                    onSelect={(status) => setStatus(status, {previous: game.status})}/>
                        {platformLabel(game) && (
                            <Badge variant="outline"><Gamepad2 className="size-3"/>{platformLabel(game)}</Badge>
                        )}
                    </div>
                    <div className="mt-3 flex items-center gap-2">
                        <span id="hero-rating" className="sr-only">{t('BACKLOG.RATING_LABEL')}</span>
                        <RatingStars value={pending?.field === 'rating' ? pending.value : (game.rating ?? 0)}
                                     onChange={(value) => save('rating', value)} labelledBy="hero-rating" disabled={ratingBusy}/>
                    </div>
                    <div className="mt-3">
                        <TimeToBeat time={game.timeToBeat}/>
                    </div>
                    {speedrunUrl && (
                        <Button asChild variant="outline" size="sm" className="mt-3">
                            <a href={speedrunUrl} target="_blank" rel="noopener noreferrer">
                                <Timer/>{t('GAME_DETAIL.OPEN_IN_SPEEDRUN')}<ExternalLink/>
                            </a>
                        </Button>
                    )}
                </div>
                {/* Background, banner and profile art need Steam art, so a game off Steam has none of them. */}
                <div className="flex flex-wrap gap-2">
                    {onSteam && (
                        <Button asChild variant="outline" size="sm">
                            <a href={`https://store.steampowered.com/app/${game.appid}`} target="_blank" rel="noopener noreferrer">
                                {t('GAME_DETAIL.OPEN_IN_STEAM')}<ExternalLink/>
                            </a>
                        </Button>
                    )}
                    <DropdownMenu>
                        <DropdownMenuTrigger asChild>
                            <Button variant="outline" size="icon-sm" aria-label={t('GAME_DETAIL.MORE')}><Ellipsis/></Button>
                        </DropdownMenuTrigger>
                        <DropdownMenuContent align="start">
                            {onSteam && (<>
                                {isBackground ? (
                                    <DropdownMenuItem onSelect={() => saveAppearance({backgroundAppid: null})}>
                                        <ImageOff/>{t('GAME_DETAIL.REMOVE_BACKGROUND')}
                                    </DropdownMenuItem>
                                ) : (
                                    <DropdownMenuItem onSelect={() => saveAppearance({backgroundAppid: game.appid})}>
                                        <ImageIcon/>{t('GAME_DETAIL.SET_BACKGROUND')}
                                    </DropdownMenuItem>
                                )}
                                {isBanner ? (
                                    <DropdownMenuItem onSelect={() => saveAppearance({bannerAppid: null})}>
                                        <RotateCcw/>{t('SETTINGS.BANNER_AUTO')}
                                    </DropdownMenuItem>
                                ) : (
                                    <DropdownMenuItem onSelect={() => saveAppearance({bannerAppid: game.appid, showBanner: true})}>
                                        <PanelTop/>{t('GAME_DETAIL.SET_BANNER')}
                                    </DropdownMenuItem>
                                )}
                                {profileStyle && (
                                    <ProfileArtItems appid={game.appid} style={profileStyle} onSaved={onProfileStyleSaved}/>
                                )}
                                <DropdownMenuSeparator/>
                            </>)}
                            <DropdownMenuItem disabled={hiding} onSelect={() => applyHidden(!game.hidden, {undoable: true})}>
                                {game.hidden ? <Eye/> : <EyeOff/>}
                                {t(game.hidden ? 'GAME_DETAIL.UNHIDE' : 'GAME_DETAIL.HIDE')}
                            </DropdownMenuItem>
                            {auditor && (<>
                                <DropdownMenuSeparator/>
                                <DropdownMenuItem onSelect={onCorrect}><PencilLine/>{t('CORRECTION.OPEN')}</DropdownMenuItem>
                                <DropdownMenuItem onSelect={onMerge}><Merge/>{t('MERGE.OPEN')}</DropdownMenuItem>
                            </>)}
                        </DropdownMenuContent>
                    </DropdownMenu>
                </div>
            </div>
        </Card>
    );
}