import { FC, useState } from 'react';
import { FaCrown, FaDoorOpen, FaExchangeAlt, FaHome, FaLock, FaMapMarkerAlt, FaSearch, FaTimes, FaTrash, FaUserSlash, FaUsers, FaVolumeMute } from 'react-icons/fa';
import { LocalizeText } from '../../../../api';
import { Button } from '../../../../common';
import { useHousekeeping, useHousekeepingConfirm, useRoom } from '../../../../hooks';

const DEFAULT_MUTE_MINUTES = 10;

export const HousekeepingRoomsTab: FC = () =>
{
    const {
        selectedRoom, setSelectedRoom, lookupRoomById, isRoomLoading, isActionPending,
        openRoom, closeRoom, muteRoom, kickAllFromRoom, transferRoomOwnership, deleteRoom
    } = useHousekeeping();
    const { roomSession = null } = useRoom();
    const [ query, setQuery ] = useState('');
    const [ muteMinutes, setMuteMinutes ] = useState<number>(DEFAULT_MUTE_MINUTES);
    const [ newOwnerId, setNewOwnerId ] = useState<number>(0);

    const confirm = useHousekeepingConfirm();

    const currentRoomId = roomSession && roomSession.roomId > 0 ? roomSession.roomId : 0;

    // Empty query + Cerca → fall back to the room the operator is
    // currently standing in. Saves a copy-paste of the room id from
    // navigator just to inspect "this room". Mirrors how /ban / /kick
    // in chat default to the active room.
    const submitLookup = () =>
    {
        const trimmed = query.trim();
        const idFromQuery = parseInt(trimmed);
        const id = (Number.isFinite(idFromQuery) && idFromQuery > 0) ? idFromQuery : currentRoomId;

        if(id <= 0) return;

        lookupRoomById(id);
    };

    const useCurrentRoom = () =>
    {
        if(currentRoomId <= 0) return;
        setQuery(String(currentRoomId));
        lookupRoomById(currentRoomId);
    };

    const disableActions = !selectedRoom || isActionPending;

    const confirmAndRun = (key: string, fn: () => void) => confirm(LocalizeText(key), fn);

    const occupancyPct = selectedRoom && selectedRoom.maxUsers > 0
        ? Math.min(100, Math.round((selectedRoom.userCount / selectedRoom.maxUsers) * 100))
        : 0;

    return (
        <div className="flex flex-col gap-2">
            { /* Lookup bar */ }
            <div className="flex gap-1.5 items-center">
                <div className="flex items-center gap-1 grow rounded-md border border-zinc-300 bg-white px-2 py-1 shadow-sm focus-within:ring-1 focus-within:ring-sky-300 focus-within:border-sky-400 transition-colors">
                    <FaSearch className="text-zinc-400 shrink-0" size={ 11 } />
                    <input
                        type="number"
                        min={ 1 }
                        className="grow text-sm bg-transparent outline-none placeholder:text-zinc-400"
                        placeholder={ currentRoomId > 0
                            ? `${ LocalizeText('housekeeping.room.search.placeholder') } · empty → current #${ currentRoomId }`
                            : LocalizeText('housekeeping.room.search.placeholder') }
                        value={ query }
                        onChange={ event => setQuery(event.target.value) }
                        onKeyDown={ event => { if(event.key === 'Enter') submitLookup(); } } />
                </div>
                { currentRoomId > 0 && currentRoomId !== selectedRoom?.id &&
                    <Button
                        gap={ 1 }
                        variant="secondary"
                        disabled={ isRoomLoading }
                        title={ `Lookup current room #${ currentRoomId }` }
                        onClick={ useCurrentRoom }>
                        <FaMapMarkerAlt size={ 10 } className="text-sky-500" />
                        <span>here</span>
                    </Button> }
                <Button gap={ 1 } disabled={ isRoomLoading } onClick={ submitLookup }>
                    <FaSearch size={ 10 } className={ isRoomLoading ? 'animate-pulse' : '' } />
                    <span>{ LocalizeText('housekeeping.room.search.button') }</span>
                </Button>
            </div>

            { /* Selected room hero card */ }
            { selectedRoom
                ? (
                    <div className="relative overflow-hidden rounded-lg border border-sky-200 bg-gradient-to-br from-sky-50 via-white to-violet-50 p-3 shadow-sm">
                        <div className="flex items-start gap-3">
                            <div className="rounded-full bg-sky-100 p-2 shrink-0 flex items-center justify-center">
                                <span className="nitro-icon nitro-icon-hk-hero icon-rooms" />
                            </div>
                            <div className="grow min-w-0">
                                <div className="flex items-center gap-1.5 flex-wrap">
                                    <span className="font-bold text-base truncate">{ selectedRoom.name }</span>
                                    <span className="text-[10px] text-zinc-500 tabular-nums">#{ selectedRoom.id }</span>
                                    { selectedRoom.isPublic &&
                                        <span className="text-[9px] uppercase font-semibold px-1.5 py-0.5 rounded-full bg-emerald-100 border border-emerald-200 text-emerald-800">public</span> }
                                    { selectedRoom.isLocked &&
                                        <span className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded-full text-[10px] font-semibold bg-rose-100 border border-rose-200 text-rose-700"><FaLock size={ 8 } /> closed</span> }
                                    { selectedRoom.isMuted &&
                                        <span className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded-full text-[10px] font-semibold bg-amber-100 border border-amber-200 text-amber-700"><FaVolumeMute size={ 8 } /> muted</span> }
                                </div>
                                <div className="text-xs text-zinc-600 truncate mt-0.5">{ selectedRoom.description || '—' }</div>
                                <div className="flex items-center gap-3 text-[11px] text-zinc-700 mt-1.5">
                                    <span className="inline-flex items-center gap-1" title={ `${ selectedRoom.userCount } / ${ selectedRoom.maxUsers }` }>
                                        <FaUsers size={ 10 } className="text-sky-600" />
                                        <span className="tabular-nums font-semibold">{ selectedRoom.userCount }</span>
                                        <span className="text-zinc-400">/</span>
                                        <span className="tabular-nums">{ selectedRoom.maxUsers }</span>
                                    </span>
                                    <span className="inline-flex items-center gap-1 truncate" title={ selectedRoom.ownerName }>
                                        <FaCrown size={ 10 } className="text-amber-500" />
                                        <span className="truncate">{ selectedRoom.ownerName }</span>
                                        <span className="text-zinc-400 tabular-nums">#{ selectedRoom.ownerId }</span>
                                    </span>
                                </div>
                                { selectedRoom.maxUsers > 0 &&
                                    <div className="h-1 mt-1.5 rounded-full bg-zinc-100 overflow-hidden">
                                        <div
                                            className={ `h-full transition-all ${ occupancyPct > 85 ? 'bg-rose-500' : occupancyPct > 60 ? 'bg-amber-500' : 'bg-emerald-500' }` }
                                            style={ { width: `${ occupancyPct }%` } } />
                                    </div> }
                            </div>
                            <button
                                className="text-zinc-400 hover:text-rose-600 transition-colors p-1"
                                onClick={ () => setSelectedRoom(null) }
                                title={ LocalizeText('housekeeping.room.clear') }>
                                <FaTimes size={ 12 } />
                            </button>
                        </div>
                    </div>
                )
                : (
                    <div className="flex items-center gap-2 rounded-lg border border-dashed border-zinc-300 bg-zinc-50/50 p-3 text-xs text-zinc-500 italic">
                        <FaHome size={ 14 } />
                        { LocalizeText('housekeeping.room.none') }
                    </div>
                ) }

            { /* Open / Close + Mute */ }
            <div className="grid grid-cols-2 gap-1.5">
                <Button variant="success" disabled={ disableActions || !selectedRoom?.isLocked } onClick={ () => openRoom(selectedRoom.id) }>
                    <FaDoorOpen size={ 10 } />
                    <span className="ml-1">{ LocalizeText('housekeeping.room.open') }</span>
                </Button>
                <Button variant="danger" disabled={ disableActions || selectedRoom?.isLocked } onClick={ () => closeRoom(selectedRoom.id) }>
                    <FaLock size={ 10 } />
                    <span className="ml-1">{ LocalizeText('housekeeping.room.close') }</span>
                </Button>
                <div className="col-span-2 flex items-center gap-1.5 rounded-md border border-amber-200 bg-amber-50/40 px-2 py-1.5">
                    <FaVolumeMute size={ 11 } className="text-amber-600" />
                    <input
                        type="number"
                        min={ 1 }
                        className="w-14 px-1.5 py-0.5 rounded border border-amber-200 bg-white text-xs tabular-nums focus:outline-none focus:ring-1 focus:ring-amber-400"
                        value={ muteMinutes }
                        onChange={ event => setMuteMinutes(parseInt(event.target.value) || 0) } />
                    <span className="text-[11px] text-zinc-600">min</span>
                    <Button variant="warning" disabled={ disableActions } className="ml-auto" onClick={ () => muteRoom(selectedRoom.id, muteMinutes) }>
                        <span>{ LocalizeText('housekeeping.room.mute_min', [ 'm' ], [ String(muteMinutes) ]) }</span>
                    </Button>
                </div>
                <Button variant="warning" disabled={ disableActions } onClick={ () => confirmAndRun('housekeeping.room.kick_all.confirm', () => kickAllFromRoom(selectedRoom.id)) }>
                    <FaUserSlash size={ 10 } />
                    <span className="ml-1">{ LocalizeText('housekeeping.room.kick_all') }</span>
                </Button>
                <Button variant="danger" disabled={ disableActions } onClick={ () => confirmAndRun('housekeeping.room.delete.confirm', () => deleteRoom(selectedRoom.id)) }>
                    <FaTrash size={ 10 } />
                    <span className="ml-1">{ LocalizeText('housekeeping.room.delete') }</span>
                </Button>
            </div>

            { /* Transfer ownership card */ }
            <div className="flex flex-col gap-1.5 rounded-md border border-violet-200 bg-violet-50/40 p-2">
                <label className="text-[10px] uppercase tracking-wider font-semibold opacity-60 flex items-center gap-1">
                    <FaExchangeAlt size={ 8 } className="text-violet-500" />
                    { LocalizeText('housekeeping.room.transfer.label') }
                </label>
                <div className="flex items-center gap-1.5">
                    <input
                        type="number"
                        min={ 1 }
                        className="w-24 px-1.5 py-1 rounded border border-violet-200 bg-white text-xs tabular-nums focus:outline-none focus:ring-1 focus:ring-violet-400"
                        placeholder={ LocalizeText('housekeeping.room.transfer.new_owner') }
                        value={ newOwnerId || '' }
                        onChange={ event => setNewOwnerId(parseInt(event.target.value) || 0) } />
                    <Button variant="primary" disabled={ disableActions || !newOwnerId } className="grow" onClick={ () => transferRoomOwnership(selectedRoom.id, newOwnerId) }>
                        <FaExchangeAlt size={ 10 } />
                        <span className="ml-1">{ LocalizeText('housekeeping.room.transfer') }</span>
                    </Button>
                </div>
            </div>
        </div>
    );
};