'use client';

import { useState } from 'react';
import { useRouter } from 'next/navigation';
import { ROOM_THEMES } from '@/entities/room';
import {
  GOAL_CHIPS,
  SOUND_PRESETS,
  TIMER_PRESETS,
  TODAY_ONE_LINER,
  useThoughtInbox,
  type GoalChip,
} from '@/entities/session';
import { MOCK_VIEWER } from '@/entities/user';
import { type CustomEntrySelection } from '@/features/custom-entry-modal';
import { useRoomSelection } from '@/features/room-select';
import {
  DEFAULT_APP_HUB_VISUAL_MODE,
  type AppHubVisualMode,
} from '@/shared/config/appHubVisualMode';
import { cn } from '@/shared/lib/cn';
import { useToast } from '@/shared/ui';
import {
  AppUtilityRailWidget,
  type AppUtilityPanelId,
} from '@/widgets/app-utility-rail';
import { AppTopBar } from '@/widgets/app-top-bar/ui/AppTopBar';
import { CustomEntryWidget } from '@/widgets/custom-entry-widget/ui/CustomEntryWidget';
import { RoomsGalleryWidget } from '@/widgets/rooms-gallery-widget/ui/RoomsGalleryWidget';
import { StartRitualWidget } from '@/widgets/start-ritual-widget/ui/StartRitualWidget';

const buildSpaceQuery = (
  roomId: string,
  goalInput: string,
  soundPresetId: string,
  timerLabel: string,
) => {
  const params = new URLSearchParams({
    room: roomId,
    sound: soundPresetId,
    timer: timerLabel,
  });

  const normalizedGoal = goalInput.trim();

  if (normalizedGoal) {
    params.set('goal', normalizedGoal);
  }

  return params.toString();
};

export const AppHubWidget = () => {
  const router = useRouter();
  const { pushToast } = useToast();
  const { thoughts, thoughtCount, clearThoughts } = useThoughtInbox();
  const { selectedRoomId, selectRoom } = useRoomSelection(
    ROOM_THEMES[0].id,
  );

  const [goalInput, setGoalInput] = useState('');
  const [selectedGoalId, setSelectedGoalId] = useState<string | null>(null);
  const [isCustomEntryOpen, setCustomEntryOpen] = useState(false);
  const [activeUtilityPanel, setActiveUtilityPanel] = useState<AppUtilityPanelId | null>(
    null,
  );

  const visualMode: AppHubVisualMode = DEFAULT_APP_HUB_VISUAL_MODE;
  const cinematic = visualMode === 'cinematic';

  const enterSpace = (soundPresetId: string, timerLabel: string) => {
    const query = buildSpaceQuery(
      selectedRoomId,
      goalInput,
      soundPresetId,
      timerLabel,
    );

    router.push(`/space?${query}`);
  };

  const handleGoalChipSelect = (chip: GoalChip) => {
    setSelectedGoalId(chip.id);
    setGoalInput(chip.label);
  };

  const handleGoalInputChange = (value: string) => {
    setGoalInput(value);

    if (selectedGoalId && value.trim() === '') {
      setSelectedGoalId(null);
    }
  };

  const handleQuickEnter = () => {
    enterSpace(SOUND_PRESETS[0].id, TIMER_PRESETS[0].label);
  };

  const handleCustomEnter = (selection: CustomEntrySelection) => {
    setCustomEntryOpen(false);
    enterSpace(selection.soundId, selection.timerLabel);
  };

  const handleLogout = () => {
    pushToast({
      title: '로그아웃은 목업에서만 동작해요',
      description: '실제 인증 로직은 연결하지 않았습니다.',
    });
  };

  return (
    <div className="relative min-h-screen overflow-hidden text-white">
      <div
        aria-hidden
        className={cn('absolute inset-0')}
        style={{
          backgroundImage: cinematic
            ? 'radial-gradient(132% 94% at 8% 0%, rgba(148,163,184,0.34) 0%, rgba(15,23,42,0) 46%), radial-gradient(116% 88% at 94% 6%, rgba(125,211,252,0.18) 0%, rgba(15,23,42,0) 52%), linear-gradient(162deg, #0f172a 0%, #111827 42%, #0b1220 100%)'
            : 'radial-gradient(130% 92% at 8% 0%, rgba(148,163,184,0.22) 0%, rgba(248,250,252,0) 48%), radial-gradient(104% 86% at 90% 8%, rgba(125,211,252,0.2) 0%, rgba(248,250,252,0) 54%), linear-gradient(164deg, #f8fafc 0%, #e2e8f0 48%, #dbe7f5 100%)',
        }}
      />
      <div
        aria-hidden
        className={cn(
          'absolute inset-0',
          cinematic
            ? 'bg-[radial-gradient(circle_at_24%_16%,rgba(148,163,184,0.14),transparent_36%),radial-gradient(circle_at_78%_14%,rgba(125,211,252,0.1),transparent_34%),linear-gradient(180deg,rgba(2,6,23,0.16)_0%,rgba(2,6,23,0.32)_52%,rgba(2,6,23,0.5)_100%)]'
            : 'bg-[radial-gradient(circle_at_20%_14%,rgba(148,163,184,0.16),transparent_38%),radial-gradient(circle_at_82%_16%,rgba(125,211,252,0.12),transparent_38%),linear-gradient(180deg,rgba(248,250,252,0.32)_0%,rgba(241,245,249,0.12)_40%,rgba(15,23,42,0.26)_100%)]',
        )}
      />
      <div
        aria-hidden
        className={cn(
          'absolute inset-0',
          cinematic ? 'opacity-[0.12]' : 'opacity-[0.06]',
        )}
        style={{
          backgroundImage:
            "url('/textures/grain.png'), repeating-linear-gradient(0deg, rgba(255,255,255,0.016) 0 1px, transparent 1px 2px)",
          mixBlendMode: 'soft-light',
        }}
      />
      <div
        aria-hidden
        className="absolute inset-0 bg-[radial-gradient(circle_at_50%_74%,transparent_12%,rgba(2,6,23,0.32)_100%)]"
      />

      <div className="relative z-10 flex min-h-screen flex-col">
        <AppTopBar
          user={MOCK_VIEWER}
          oneLiner={TODAY_ONE_LINER}
          onLogout={handleLogout}
          visualMode={visualMode}
          onOpenBilling={() => router.push('/settings')}
        />

        <main className="mx-auto w-full max-w-6xl flex-1 px-4 pb-8 pt-5 sm:px-6 sm:pt-6 lg:px-8 lg:pb-10">
          <RoomsGalleryWidget
            visualMode={visualMode}
            rooms={ROOM_THEMES}
            selectedRoomId={selectedRoomId}
            onRoomSelect={selectRoom}
            startPanel={(
              <StartRitualWidget
                visualMode={visualMode}
                goalInput={goalInput}
                selectedGoalId={selectedGoalId}
                goalChips={GOAL_CHIPS}
                onGoalInputChange={handleGoalInputChange}
                onGoalChipSelect={handleGoalChipSelect}
                onQuickEnter={handleQuickEnter}
                onOpenCustomEntry={() => setCustomEntryOpen(true)}
                inStage
              />
            )}
          />
        </main>
      </div>

      <CustomEntryWidget
        isOpen={isCustomEntryOpen}
        selectedRoomId={selectedRoomId}
        onSelectRoom={selectRoom}
        onClose={() => setCustomEntryOpen(false)}
        onEnter={handleCustomEnter}
      />

      <AppUtilityRailWidget
        visualMode={visualMode}
        activePanel={activeUtilityPanel}
        thoughts={thoughts}
        thoughtCount={thoughtCount}
        onOpenPanel={setActiveUtilityPanel}
        onClosePanel={() => setActiveUtilityPanel(null)}
        onClearInbox={() => {
          clearThoughts();
          pushToast({ title: '메모 인박스를 비웠어요' });
        }}
      />
    </div>
  );
};