import { useState, useMemo, useRef, useEffect } from 'react';
import { useSeoMeta } from '@unhead/react';
import { Link } from 'react-router-dom';
import { Layout } from '@/components/Layout';
import { Badge } from '@/components/ui/badge';
import { Sheet, SheetContent, SheetHeader, SheetTitle } from '@/components/ui/sheet';
import { type TrustFilterLevel, filterByTrustLevel } from '@/components/TrustFilter';
import { type SortOption } from '@/components/SortDropdown';
import { useLabProfiles, type LabProfile } from '@/hooks/useLabProfiles';
import { useAuthor } from '@/hooks/useAuthor';
import { useCurrentUser } from '@/hooks/useCurrentUser';
import { useBatchTrustScores } from '@/hooks/useBatchTrustScores';
import { useTranslation } from '@/contexts/LanguageContext';
import { genUserName } from '@/lib/genUserName';
import {
  COACH_SKILL_LABELS,
  FILMING_SERVICE_LABELS,
  FILMING_SKILL_LABELS,
  EDITOR_SERVICE_LABELS,
  EDITOR_SKILL_LABELS,
  PHOTO_SERVICE_LABELS,
  PHOTO_CAMERA_LABELS,
  PHOTO_LENS_LABELS,
  PHOTO_LIGHTING_LABELS,
  PHOTO_SUPPORT_LABELS,
  PHOTO_STYLE_LABELS,
  BUILDER_SERVICE_LABELS,
  BUILDER_SKILL_LABELS,
  BUILDER_SCALE_LABELS,
} from '@/lib/types';
import {
  GraduationCap,
  Search,
  Plus,
  MapPin,
  SlidersHorizontal,
  Video,
  Scissors,
  Camera,
  HardHat,
  CreditCard,
  X,
  ChevronRight,
  Star,
  Clock,
  Users,
  CheckCircle2,
  Shield,
} from 'lucide-react';
import { cn } from '@/lib/utils';
import { Avatar, AvatarImage, AvatarFallback } from '@/components/ui/avatar';
import { ProBadge } from '@/components/ProBadge';
import { LabCrewsStrip } from '@/components/LabCrewsStrip';
import { isFeaturedActive } from '@/lib/types';

// ─── Constants ────────────────────────────────────────────────────────────────

const COACH_SKILL_ENTRIES = Object.entries(COACH_SKILL_LABELS);
const FILMING_SERVICE_ENTRIES = Object.entries(FILMING_SERVICE_LABELS);
const EDITOR_SERVICE_ENTRIES = Object.entries(EDITOR_SERVICE_LABELS);
const EDITOR_SKILL_ENTRIES = Object.entries(EDITOR_SKILL_LABELS);
const PHOTO_SERVICE_ENTRIES = Object.entries(PHOTO_SERVICE_LABELS);
const PHOTO_CAMERA_ENTRIES = Object.entries(PHOTO_CAMERA_LABELS);
const PHOTO_LENS_ENTRIES = Object.entries(PHOTO_LENS_LABELS);
const PHOTO_LIGHTING_ENTRIES = Object.entries(PHOTO_LIGHTING_LABELS);
const PHOTO_SUPPORT_ENTRIES = Object.entries(PHOTO_SUPPORT_LABELS);
const PHOTO_STYLE_ENTRIES = Object.entries(PHOTO_STYLE_LABELS);
const BUILDER_SERVICE_ENTRIES = Object.entries(BUILDER_SERVICE_LABELS);
const BUILDER_SKILL_ENTRIES = Object.entries(BUILDER_SKILL_LABELS);
const BUILDER_SCALE_ENTRIES = Object.entries(BUILDER_SCALE_LABELS);

const BUILDER_ALL_LABELS: Record<string, string> = {
  ...BUILDER_SERVICE_LABELS,
  ...BUILDER_SKILL_LABELS,
  ...BUILDER_SCALE_LABELS,
};

// All photographer label maps merged — for resolving a chip label regardless of category
const PHOTO_ALL_LABELS: Record<string, string> = {
  ...PHOTO_SERVICE_LABELS,
  ...PHOTO_CAMERA_LABELS,
  ...PHOTO_LENS_LABELS,
  ...PHOTO_LIGHTING_LABELS,
  ...PHOTO_SUPPORT_LABELS,
  ...PHOTO_STYLE_LABELS,
};

type ServiceType = 'coaching' | 'filming' | 'editing' | 'photography' | 'building';

// ─── Per-category accent colours ─────────────────────────────────────────────

const ACCENT = {
  coaching: {
    active: 'bg-[#ff0040] hover:bg-[#ff0040]/90 text-white border-[#ff0040]',
    chip: 'bg-[#ff0040] text-white border-[#ff0040]',
    chipHover: 'hover:border-[#ff0040]/60 hover:text-[#ff0040]',
    border: 'border-[#ff0040]/40',
    glow: 'shadow-[#ff0040]/20',
    icon: 'text-[#ff0040]',
    badge: 'bg-[#ff0040]/15 text-[#ff0040] border-[#ff0040]/30',
    stripe: 'bg-[#ff0040]',
    badgeSkill: 'bg-red-900/40 border-red-700/50 text-red-300',
  },
  filming: {
    active: 'bg-orange-500 hover:bg-orange-600 text-white border-orange-500',
    chip: 'bg-orange-500 text-white border-orange-500',
    chipHover: 'hover:border-orange-500/60 hover:text-orange-400',
    border: 'border-orange-500/40',
    glow: 'shadow-orange-500/20',
    icon: 'text-orange-400',
    badge: 'bg-orange-500/15 text-orange-400 border-orange-500/30',
    stripe: 'bg-orange-500',
    badgeSkill: 'bg-orange-900/40 border-orange-700/50 text-orange-300',
  },
  editing: {
    active: 'bg-purple-600 hover:bg-purple-700 text-white border-purple-600',
    chip: 'bg-purple-600 text-white border-purple-600',
    chipHover: 'hover:border-purple-500/60 hover:text-purple-400',
    border: 'border-purple-500/40',
    glow: 'shadow-purple-500/20',
    icon: 'text-purple-400',
    badge: 'bg-purple-500/15 text-purple-400 border-purple-500/30',
    stripe: 'bg-purple-600',
    badgeSkill: 'bg-purple-900/40 border-purple-700/50 text-purple-300',
  },
  photography: {
    active: 'bg-indigo-600 hover:bg-indigo-700 text-white border-indigo-600',
    chip: 'bg-indigo-600 text-white border-indigo-600',
    chipHover: 'hover:border-indigo-500/60 hover:text-indigo-400',
    border: 'border-indigo-500/40',
    glow: 'shadow-indigo-500/20',
    icon: 'text-indigo-400',
    badge: 'bg-indigo-500/15 text-indigo-400 border-indigo-500/30',
    stripe: 'bg-indigo-600',
    badgeSkill: 'bg-indigo-900/40 border-indigo-700/50 text-indigo-300',
  },
  building: {
    active: 'bg-amber-500 hover:bg-amber-600 text-black border-amber-500',
    chip: 'bg-amber-500 text-black border-amber-500',
    chipHover: 'hover:border-amber-500/60 hover:text-amber-400',
    border: 'border-amber-500/40',
    glow: 'shadow-amber-500/20',
    icon: 'text-amber-400',
    badge: 'bg-amber-500/15 text-amber-400 border-amber-500/30',
    stripe: 'bg-amber-500',
    badgeSkill: 'bg-amber-900/40 border-amber-700/50 text-amber-300',
  },
};

// ─── FAB — offer services ─────────────────────────────────────────────────────

function OfferFAB() {
  const [open, setOpen] = useState(false);
  const ref = useRef<HTMLDivElement>(null);

  // Close on outside click
  useEffect(() => {
    if (!open) return;
    const handler = (e: MouseEvent) => {
      if (ref.current && !ref.current.contains(e.target as Node)) setOpen(false);
    };
    document.addEventListener('mousedown', handler);
    return () => document.removeEventListener('mousedown', handler);
  }, [open]);

  const items = [
    { to: '/become-coach', label: 'Offer Coaching', color: 'bg-[#ff0040] hover:bg-[#ff0040]/90', icon: GraduationCap },
    { to: '/become-filmer', label: 'Offer Filming', color: 'bg-orange-500 hover:bg-orange-600', icon: Video },
    { to: '/become-photographer', label: 'Offer Photography', color: 'bg-indigo-600 hover:bg-indigo-700', icon: Camera },
    { to: '/become-editor', label: 'Offer Editing', color: 'bg-purple-600 hover:bg-purple-700', icon: Scissors },
    { to: '/become-builder', label: 'Offer Building', color: 'bg-amber-500 hover:bg-amber-600 text-black', icon: HardHat },
    { to: '/card', label: 'Get Rider Card', color: 'bg-[#ccff00]/20 hover:bg-[#ccff00]/30 border border-[#ccff00]/50 text-[#ccff00]', icon: CreditCard },
  ];

  return (
    <div ref={ref} className="relative">
      <button
        onClick={() => setOpen((v) => !v)}
        className={cn(
          'flex items-center gap-2 px-4 py-2.5 rounded-xl font-black text-sm uppercase tracking-wide transition-all active:scale-95',
          open
            ? 'bg-white text-black'
            : 'bg-[#ff0040] hover:bg-[#ff0040]/90 text-white'
        )}
      >
        {open ? <X className="h-4 w-4" /> : <Plus className="h-4 w-4" />}
        <span className="hidden sm:inline">Offer Services</span>
        <span className="sm:hidden">Offer</span>
      </button>

      {/* Dropdown */}
      {open && (
        <div className="absolute right-0 top-full mt-2 w-52 rounded-xl border border-white/10 bg-black/95 shadow-2xl shadow-black/60 backdrop-blur z-50 overflow-hidden">
          <div className="p-1.5 space-y-0.5">
            {items.map(({ to, label, color, icon: Icon }) => (
              <Link
                key={to}
                to={to}
                onClick={() => setOpen(false)}
                className={cn(
                  'flex items-center gap-3 px-3 py-2.5 rounded-lg text-sm font-bold uppercase tracking-wide transition-all active:scale-95',
                  color
                )}
              >
                <Icon className="h-4 w-4 flex-shrink-0" />
                {label}
              </Link>
            ))}
          </div>
        </div>
      )}
    </div>
  );
}

// ─── Sticky toolbar ───────────────────────────────────────────────────────────

interface ToolbarProps {
  serviceType: ServiceType;
  onServiceChange: (t: ServiceType) => void;
  searchQuery: string;
  onSearchChange: (q: string) => void;
  locationQuery: string;
  onLocationChange: (q: string) => void;
  activeFilterCount: number;
  onOpenFilters: () => void;
  counts: Record<ServiceType, number>;
  totalCount: number;
  isLoading: boolean;
  // Active filter chips data
  selectedSkills: string[];
  onRemoveSkill: (s: string) => void;
  sortBy: SortOption;
  trustFilter: TrustFilterLevel;
  onClearAll: () => void;
  serviceType: ServiceType;
}

function getSkillLabelForType(skill: string, serviceType: ServiceType): string {
  if (serviceType === 'coaching') return COACH_SKILL_LABELS[skill] || skill;
  if (serviceType === 'filming') return FILMING_SERVICE_LABELS[skill] || FILMING_SKILL_LABELS[skill] || skill;
  if (serviceType === 'photography') return PHOTO_ALL_LABELS[skill] || skill;
  if (serviceType === 'building') return BUILDER_ALL_LABELS[skill] || skill;
  return EDITOR_SERVICE_LABELS[skill] || EDITOR_SKILL_LABELS[skill] || skill;
}

function LabToolbar({
  serviceType,
  onServiceChange,
  searchQuery,
  onSearchChange,
  locationQuery,
  onLocationChange,
  activeFilterCount,
  onOpenFilters,
  counts,
  totalCount,
  isLoading,
  selectedSkills,
  onRemoveSkill,
  sortBy,
  trustFilter,
  onClearAll,
}: ToolbarProps) {
  const tabs: { key: ServiceType; label: string; icon: React.ComponentType<{ className?: string }> }[] = [
    { key: 'coaching', label: 'Coaches', icon: GraduationCap },
    { key: 'filming', label: 'Filmers', icon: Video },
    { key: 'photography', label: 'Photo', icon: Camera },
    { key: 'editing', label: 'Editors', icon: Scissors },
    { key: 'building', label: 'Builders', icon: HardHat },
  ];

  const accent = ACCENT[serviceType];

  // Build active filter chip labels
  const activeChips: { key: string; label: string }[] = [];
  selectedSkills.forEach((s) => {
    activeChips.push({ key: s, label: getSkillLabelForType(s, serviceType) });
  });

  const hasNonSkillFilters = trustFilter !== 'all' || sortBy !== 'recent';

  return (
    <div className="sticky top-14 md:top-16 z-30 bg-black/95 backdrop-blur border-b border-white/5 -mx-4 px-4 py-3 space-y-2.5">
      {/* Tab row — fixed 5-across grid so every category is visible without
          horizontal scrolling. Icon-over-label stack keeps each tab compact
          but tappable on small phones; a count badge floats in the corner. */}
      <div className="grid grid-cols-5 gap-1.5 sm:gap-2">
        {tabs.map(({ key, label, icon: Icon }) => {
          const isActive = serviceType === key;
          const a = ACCENT[key];
          return (
            <button
              key={key}
              onClick={() => onServiceChange(key)}
              className={cn(
                'relative flex flex-col items-center justify-center gap-1 px-1 py-2 rounded-xl font-black text-[10px] sm:text-xs uppercase tracking-tight sm:tracking-wide transition-all duration-150 active:scale-95',
                isActive
                  ? a.active
                  : 'text-gray-500 bg-white/5 hover:bg-white/10 hover:text-white border border-transparent'
              )}
            >
              <Icon className="h-4 w-4 flex-shrink-0" />
              <span className="leading-none">{label}</span>
              {/* Count badge — floats top-right so it never widens the tab */}
              {!isLoading && counts[key] > 0 && (
                <span className={cn(
                  'absolute -top-1 -right-1 min-w-[16px] h-[16px] px-1 text-[9px] font-black rounded-full flex items-center justify-center leading-none border border-black/40',
                  isActive ? 'bg-white text-black' : 'bg-white/15 text-gray-300'
                )}>
                  {counts[key]}
                </span>
              )}
            </button>
          );
        })}
      </div>

      {/* Search + Location + Filter row */}
      <div className="flex items-center gap-2">
        {/* Search by name */}
        <div className="relative flex-1">
          <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-gray-500 pointer-events-none" />
          <input
            type="text"
            value={searchQuery}
            onChange={(e) => onSearchChange(e.target.value)}
            placeholder="Name, bio…"
            className="w-full h-9 pl-8 pr-3 rounded-xl bg-white/5 border border-white/10 text-sm text-white placeholder:text-gray-600 focus:outline-none focus:border-white/30 transition-all"
          />
          {searchQuery && (
            <button
              onClick={() => onSearchChange('')}
              className="absolute right-2 top-1/2 -translate-y-1/2 text-gray-500 hover:text-white transition-colors"
            >
              <X className="h-3.5 w-3.5" />
            </button>
          )}
        </div>

        {/* Location quick-filter */}
        <div className="relative flex-1">
          <MapPin className="absolute left-3 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-gray-500 pointer-events-none" />
          <input
            type="text"
            value={locationQuery}
            onChange={(e) => onLocationChange(e.target.value)}
            placeholder="City…"
            className="w-full h-9 pl-8 pr-3 rounded-xl bg-white/5 border border-white/10 text-sm text-white placeholder:text-gray-600 focus:outline-none focus:border-white/30 transition-all"
          />
          {locationQuery && (
            <button
              onClick={() => onLocationChange('')}
              className="absolute right-2 top-1/2 -translate-y-1/2 text-gray-500 hover:text-white transition-colors"
            >
              <X className="h-3.5 w-3.5" />
            </button>
          )}
        </div>

        {/* Filter button */}
        <button
          onClick={onOpenFilters}
          className={cn(
            'relative flex items-center gap-1.5 h-9 px-3 rounded-xl font-bold text-xs uppercase tracking-wide transition-all active:scale-95 border whitespace-nowrap flex-shrink-0',
            activeFilterCount > 0
              ? `${accent.badge} border-current`
              : 'bg-white/5 border-white/10 text-gray-400 hover:bg-white/10 hover:text-white'
          )}
        >
          <SlidersHorizontal className="h-3.5 w-3.5" />
          <span className="hidden sm:inline">Filters</span>
          {activeFilterCount > 0 && (
            <span className="flex items-center justify-center w-4 h-4 text-[9px] font-black rounded-full bg-current/30 leading-none">
              {activeFilterCount}
            </span>
          )}
        </button>
      </div>

      {/* Active filter chips row — only shown when filters are active */}
      {(activeChips.length > 0 || hasNonSkillFilters) && (
        <div className="flex items-center gap-1.5 flex-wrap">
          {/* Skill chips */}
          {activeChips.map(({ key, label }) => (
            <button
              key={key}
              onClick={() => onRemoveSkill(key)}
              className={cn(
                'flex items-center gap-1 px-2.5 py-1 rounded-full text-[10px] font-bold border transition-all hover:opacity-80 active:scale-95',
                accent.chip
              )}
            >
              {label}
              <X className="h-2.5 w-2.5" />
            </button>
          ))}

          {/* Sort chip */}
          {sortBy !== 'recent' && (
            <span className={cn('flex items-center gap-1 px-2.5 py-1 rounded-full text-[10px] font-bold border', accent.badge)}>
              <Star className="h-2.5 w-2.5" />
              Top Rated
            </span>
          )}

          {/* Trust chip */}
          {trustFilter !== 'all' && (
            <span className={cn('flex items-center gap-1 px-2.5 py-1 rounded-full text-[10px] font-bold border', accent.badge)}>
              <Shield className="h-2.5 w-2.5" />
              {trustFilter === 'verified' ? 'Verified' : trustFilter === 'trusted' ? 'Trusted' : 'Following'}
            </span>
          )}

          {/* Clear all */}
          <button
            onClick={onClearAll}
            className="px-2.5 py-1 rounded-full text-[10px] font-bold text-gray-500 hover:text-red-400 border border-white/10 hover:border-red-500/30 transition-all"
          >
            Clear all
          </button>
        </div>
      )}

      {/* Results count */}
      {!isLoading && (
        <p className="text-[11px] text-gray-500 font-semibold leading-none">
          {totalCount === 0
            ? 'No results'
            : `${totalCount} result${totalCount !== 1 ? 's' : ''}`}
        </p>
      )}
    </div>
  );
}

// ─── Filter drawer — bottom sheet on mobile, right panel on desktop ───────────

interface FilterDrawerProps {
  open: boolean;
  onClose: () => void;
  serviceType: ServiceType;
  selectedSkills: string[];
  onToggleSkill: (s: string) => void;
  sortBy: SortOption;
  onSortChange: (s: SortOption) => void;
  trustFilter: TrustFilterLevel;
  onTrustChange: (t: TrustFilterLevel) => void;
  onClearAll: () => void;
  activeCount: number;
}

function FilterDrawer({
  open,
  onClose,
  serviceType,
  selectedSkills,
  onToggleSkill,
  sortBy,
  onSortChange,
  trustFilter,
  onTrustChange,
  onClearAll,
  activeCount,
}: FilterDrawerProps) {
  const accent = ACCENT[serviceType];

  const skillSections: { title: string; entries: [string, string][]; activeColor: string }[] =
    serviceType === 'coaching'
      ? [{ title: 'Skills to Learn', entries: COACH_SKILL_ENTRIES, activeColor: accent.chip }]
      : serviceType === 'filming'
      ? [
          { title: 'Content Type', entries: FILMING_SERVICE_ENTRIES, activeColor: accent.chip },
          { title: 'Equipment & Style', entries: Object.entries(FILMING_SKILL_LABELS), activeColor: 'bg-orange-400 text-white border-orange-400' },
        ]
      : serviceType === 'photography'
      ? [
          { title: 'Services', entries: PHOTO_SERVICE_ENTRIES, activeColor: accent.chip },
          { title: 'Camera', entries: PHOTO_CAMERA_ENTRIES, activeColor: 'bg-indigo-400 text-white border-indigo-400' },
          { title: 'Lenses', entries: PHOTO_LENS_ENTRIES, activeColor: 'bg-indigo-400 text-white border-indigo-400' },
          { title: 'Lighting', entries: PHOTO_LIGHTING_ENTRIES, activeColor: 'bg-indigo-400 text-white border-indigo-400' },
          { title: 'Support & Rig', entries: PHOTO_SUPPORT_ENTRIES, activeColor: 'bg-indigo-400 text-white border-indigo-400' },
          { title: 'Style', entries: PHOTO_STYLE_ENTRIES, activeColor: 'bg-indigo-400 text-white border-indigo-400' },
        ]
      : serviceType === 'building'
      ? [
          { title: 'What They Build', entries: BUILDER_SERVICE_ENTRIES, activeColor: accent.chip },
          { title: 'Materials & Trade', entries: BUILDER_SKILL_ENTRIES, activeColor: 'bg-amber-400 text-black border-amber-400' },
          { title: 'Project Scale', entries: BUILDER_SCALE_ENTRIES, activeColor: 'bg-amber-400 text-black border-amber-400' },
        ]
      : [
          { title: 'Edit Type', entries: EDITOR_SERVICE_ENTRIES, activeColor: accent.chip },
          { title: 'Software & Tools', entries: EDITOR_SKILL_ENTRIES, activeColor: 'bg-purple-400 text-white border-purple-400' },
        ];

  const trustOptions: { value: TrustFilterLevel; label: string; icon: React.ComponentType<{ className?: string }> }[] = [
    { value: 'all', label: 'All', icon: Users },
    { value: 'verified', label: 'Verified', icon: CheckCircle2 },
    { value: 'trusted', label: 'Trusted', icon: Shield },
    { value: 'following', label: 'Following', icon: CheckCircle2 },
  ];

  const drawerContent = (
    <>
      {/* Header */}
      <div className="flex items-center justify-between px-4 pt-4 pb-3 flex-shrink-0 border-b border-white/5">
        <div className="flex items-center gap-2">
          <SlidersHorizontal className={cn('h-4 w-4', accent.icon)} />
          <span className="font-black text-base text-white">Filters</span>
          {activeCount > 0 && (
            <Badge className={cn('text-xs px-1.5 py-0', accent.badge)}>
              {activeCount} active
            </Badge>
          )}
        </div>
        <div className="flex items-center gap-3">
          {activeCount > 0 && (
            <button
              onClick={onClearAll}
              className="text-xs text-gray-400 hover:text-red-400 transition-colors font-semibold"
            >
              Clear all
            </button>
          )}
          <button
            onClick={onClose}
            className="w-7 h-7 flex items-center justify-center rounded-full bg-white/5 hover:bg-white/10 transition-colors"
          >
            <X className="h-3.5 w-3.5 text-gray-400" />
          </button>
        </div>
      </div>

      {/* Scrollable body */}
      <div className="flex-1 min-h-0 overflow-y-auto px-4 space-y-5 py-4 scroll-container">
        {/* Sort */}
        <div>
          <p className="text-[10px] font-black uppercase tracking-widest text-gray-500 mb-2">Sort By</p>
          <div className="flex gap-2">
            {[
              { value: 'recent' as SortOption, label: 'Newest', icon: Clock },
              { value: 'trust' as SortOption, label: 'Top Rated', icon: Star },
            ].map(({ value, label, icon: Icon }) => (
              <button
                key={value}
                onClick={() => onSortChange(value)}
                className={cn(
                  'flex items-center gap-1.5 px-3 py-2 rounded-xl text-xs font-bold border transition-all flex-1 justify-center',
                  sortBy === value
                    ? accent.chip
                    : 'bg-white/5 border-white/10 text-gray-400 hover:bg-white/10'
                )}
              >
                <Icon className="h-3.5 w-3.5" />
                {label}
              </button>
            ))}
          </div>
        </div>

        {/* Trust — inline pill buttons, no dropdown */}
        <div>
          <p className="text-[10px] font-black uppercase tracking-widest text-gray-500 mb-2">Trust Level</p>
          <div className="flex flex-wrap gap-2">
            {trustOptions.map(({ value, label, icon: Icon }) => (
              <button
                key={value}
                onClick={() => onTrustChange(value)}
                className={cn(
                  'flex items-center gap-1.5 px-3 py-2 rounded-xl text-xs font-bold border transition-all',
                  trustFilter === value
                    ? accent.chip
                    : 'bg-white/5 border-white/10 text-gray-400 hover:bg-white/10 hover:text-white'
                )}
              >
                <Icon className="h-3.5 w-3.5" />
                {label}
              </button>
            ))}
          </div>
        </div>

        {/* Skill chips per section */}
        {skillSections.map(({ title, entries, activeColor }) => (
          <div key={title}>
            <p className="text-[10px] font-black uppercase tracking-widest text-gray-500 mb-2.5">{title}</p>
            <div className="flex flex-wrap gap-1.5">
              {entries.map(([key, label]) => {
                const isActive = selectedSkills.includes(key);
                return (
                  <button
                    key={key}
                    onClick={() => onToggleSkill(key)}
                    className={cn(
                      'px-3 py-1.5 rounded-full text-xs font-bold border transition-all active:scale-95',
                      isActive
                        ? activeColor
                        : `bg-white/5 border-white/10 text-gray-400 ${accent.chipHover}`
                    )}
                  >
                    {label}
                  </button>
                );
              })}
            </div>
          </div>
        ))}
      </div>

      {/* Apply */}
      <div className="flex-shrink-0 px-4 pt-3 pb-4 border-t border-white/5">
        <button
          onClick={onClose}
          className={cn(
            'w-full h-12 rounded-xl font-black text-base uppercase tracking-wide transition-all active:scale-[0.98]',
            accent.active
          )}
        >
          Show Results{activeCount > 0 ? ` · ${activeCount} active` : ''}
        </button>
      </div>
    </>
  );

  return (
    <>
      {/* Mobile: bottom sheet */}
      <div className="md:hidden">
        <Sheet open={open} onOpenChange={(v) => !v && onClose()}>
          <SheetContent side="bottom" className="h-[82vh] max-h-[700px] rounded-t-2xl p-0 flex flex-col bg-[#0a0a0a]">
            <SheetHeader className="sr-only">
              <SheetTitle>Filters</SheetTitle>
            </SheetHeader>
            {drawerContent}
          </SheetContent>
        </Sheet>
      </div>

      {/* Desktop: right side panel */}
      <div className="hidden md:block">
        <Sheet open={open} onOpenChange={(v) => !v && onClose()}>
          <SheetContent side="right" className="w-80 p-0 flex flex-col bg-[#0a0a0a] border-l border-white/8">
            <SheetHeader className="sr-only">
              <SheetTitle>Filters</SheetTitle>
            </SheetHeader>
            {drawerContent}
          </SheetContent>
        </Sheet>
      </div>
    </>
  );
}

// ─── Profile Card ─────────────────────────────────────────────────────────────

function ProfileCard({ profile }: { profile: LabProfile }) {
  const author = useAuthor(profile.pubkey);
  const metadata = author.data?.metadata;
  const displayName = metadata?.name ?? genUserName(profile.pubkey);
  const avatar = profile.image || metadata?.picture;
  const nip05 = metadata?.nip05;

  const isCoach = profile.profileType === 'coach';
  const isFilmer = profile.profileType === 'filmer';
  const isEditor = profile.profileType === 'editor';
  const isPhotographer = profile.profileType === 'photographer';
  const isBuilder = profile.profileType === 'builder';

  const serviceType: ServiceType = isCoach ? 'coaching' : isFilmer ? 'filming' : isPhotographer ? 'photography' : isBuilder ? 'building' : 'editing';
  const accent = ACCENT[serviceType];

  const TypeIcon = isCoach ? GraduationCap : isFilmer ? Video : isPhotographer ? Camera : isBuilder ? HardHat : Scissors;

  const getSkillLabel = (skill: string) => {
    if (isCoach) return COACH_SKILL_LABELS[skill] || skill;
    if (isFilmer) return FILMING_SERVICE_LABELS[skill] || FILMING_SKILL_LABELS[skill] || skill;
    if (isPhotographer) return PHOTO_ALL_LABELS[skill] || skill;
    if (isBuilder) return BUILDER_ALL_LABELS[skill] || skill;
    if (isEditor) return EDITOR_SERVICE_LABELS[skill] || EDITOR_SKILL_LABELS[skill] || skill;
    return skill;
  };

  return (
    <Link to={`/coach/${profile.pubkey}/${profile.identifier}`}>
      <div className={cn(
        'group relative flex gap-3 p-4 rounded-2xl bg-white/3 border border-white/8',
        'hover:bg-white/5 hover:border-white/15 hover:shadow-xl',
        'transition-all duration-200 active:scale-[0.99]',
        'overflow-hidden',
        isFeaturedActive(profile.featuredUntil) &&
          'border-amber-500/40 bg-gradient-to-br from-amber-500/[0.07] to-transparent',
      )}>
        {/* Left color stripe */}
        <div className={cn('absolute left-0 top-0 bottom-0 w-[3px] rounded-l-2xl', accent.stripe)} />

        {/* Avatar */}
        <div className="relative flex-shrink-0">
          <Avatar className={cn('h-14 w-14 border-2', accent.border)}>
            <AvatarImage src={avatar} alt={displayName} />
            <AvatarFallback className={cn('text-sm font-black', accent.badge)}>
              {displayName.slice(0, 2).toUpperCase()}
            </AvatarFallback>
          </Avatar>
          {/* Type badge on avatar */}
          <div className={cn(
            'absolute -bottom-1 -right-1 w-5 h-5 rounded-full flex items-center justify-center border-2 border-black',
            accent.stripe
          )}>
            <TypeIcon className="h-2.5 w-2.5 text-white" />
          </div>
        </div>

        {/* Main content */}
        <div className="flex-1 min-w-0">
          {/* Name row */}
          <div className="flex items-start justify-between gap-2 mb-1">
            <div className="min-w-0">
              <h3 className="font-black text-sm text-white truncate leading-tight flex items-center gap-1.5">
                <span className="truncate">{displayName}</span>
                <ProBadge featuredUntil={profile.featuredUntil} compact className="flex-shrink-0" />
                {profile.entityType === 'collective' && (
                  <span
                    className={cn('inline-flex items-center gap-0.5 rounded-full px-1.5 py-0.5 text-[9px] font-bold flex-shrink-0', accent.badgeSkill)}
                    title="Collective"
                  >
                    <Users className="h-2.5 w-2.5" />
                    {profile.members.length > 0 ? profile.members.length : ''}
                  </span>
                )}
              </h3>
              {nip05 && (
                <p className={cn('text-[10px] font-bold truncate leading-tight', accent.icon)}>
                  ✓ {nip05}
                </p>
              )}
            </div>
            <ChevronRight className="h-4 w-4 text-gray-600 group-hover:text-gray-400 flex-shrink-0 mt-0.5 transition-colors" />
          </div>

          {/* Title + location */}
          <p className="text-xs text-gray-400 truncate mb-1.5 leading-snug">{profile.title}</p>

          <div className="flex items-center gap-3 text-[11px] text-gray-500 mb-2">
            {profile.location && (
              <span className="flex items-center gap-1 truncate">
                <MapPin className="h-3 w-3 text-[#ff0040] flex-shrink-0" />
                {profile.location}
              </span>
            )}
            {profile.experience && (
              <span className="flex-shrink-0">{profile.experience}yr exp</span>
            )}
          </div>

          {/* Skill chips */}
          {profile.skills.length > 0 && (
            <div className="flex flex-wrap gap-1">
              {profile.skills.slice(0, 3).map((skill: string) => (
                <span
                  key={skill}
                  className={cn(
                    'inline-flex items-center px-2 py-0.5 rounded-full text-[10px] font-bold border',
                    accent.badgeSkill
                  )}
                >
                  {getSkillLabel(skill)}
                </span>
              ))}
              {profile.skills.length > 3 && (
                <span className="inline-flex items-center px-2 py-0.5 rounded-full text-[10px] font-bold border bg-white/5 border-white/10 text-gray-500">
                  +{profile.skills.length - 3}
                </span>
              )}
            </div>
          )}

          {/* Rate */}
          {profile.rate && (
            <p className="text-[11px] text-orange-400 font-bold mt-1.5">💰 {profile.rate}</p>
          )}
        </div>
      </div>
    </Link>
  );
}

// ─── Skeleton card ────────────────────────────────────────────────────────────

function SkeletonCard() {
  return (
    <div className="flex gap-3 p-4 rounded-2xl bg-white/3 border border-white/8">
      <div className="w-14 h-14 rounded-full bg-white/8 animate-pulse flex-shrink-0" />
      <div className="flex-1 space-y-2 min-w-0">
        <div className="h-3.5 w-28 bg-white/8 animate-pulse rounded-full" />
        <div className="h-3 w-36 bg-white/8 animate-pulse rounded-full" />
        <div className="h-3 w-24 bg-white/8 animate-pulse rounded-full" />
        <div className="flex gap-1.5 mt-1">
          <div className="h-4 w-14 bg-white/8 animate-pulse rounded-full" />
          <div className="h-4 w-18 bg-white/8 animate-pulse rounded-full" />
        </div>
      </div>
    </div>
  );
}

// ─── Empty state per-category ─────────────────────────────────────────────────

function EmptyState({ serviceType, user }: { serviceType: ServiceType; user: boolean }) {
  const configs = {
    coaching: {
      icon: GraduationCap,
      title: 'No coaches yet',
      body: 'Be the first to offer skateboarding coaching in your area.',
      cta: 'Offer Coaching',
      to: '/become-coach',
      color: 'bg-[#ff0040] hover:bg-[#ff0040]/90',
    },
    filming: {
      icon: Video,
      title: 'No filmers yet',
      body: 'Be the first to offer skate filming — clips, full parts, contest coverage and more.',
      cta: 'Offer Filming',
      to: '/become-filmer',
      color: 'bg-orange-500 hover:bg-orange-600',
    },
    photography: {
      icon: Camera,
      title: 'No photographers yet',
      body: 'Be the first to offer skate photography in your area — action shots, sequences, editorial and more.',
      cta: 'Offer Photography',
      to: '/become-photographer',
      color: 'bg-indigo-600 hover:bg-indigo-700',
    },
    editing: {
      icon: Scissors,
      title: 'No video editors yet',
      body: 'Be the first to offer skate video editing services.',
      cta: 'Offer Editing',
      to: '/become-editor',
      color: 'bg-purple-600 hover:bg-purple-700',
    },
    building: {
      icon: HardHat,
      title: 'No builders yet',
      body: 'Be the first to list your ramp, park or DIY building — concrete, wood, rails and more.',
      cta: 'Offer Building',
      to: '/become-builder',
      color: 'bg-amber-500 hover:bg-amber-600 text-black',
    },
  };

  const c = configs[serviceType];
  const Icon = c.icon;

  return (
    <div className="flex flex-col items-center justify-center py-20 px-4 text-center">
      <div className="w-16 h-16 rounded-2xl bg-white/5 flex items-center justify-center mb-4">
        <Icon className="h-8 w-8 text-gray-600" />
      </div>
      <h3 className="text-lg font-black mb-2 text-white">{c.title}</h3>
      <p className="text-gray-500 text-sm max-w-xs mb-4">{c.body}</p>
      {user ? (
        <Link to={c.to}>
          <button className={cn('flex items-center gap-2 px-5 py-2.5 rounded-xl font-black text-sm uppercase tracking-wide text-white transition-all active:scale-95', c.color)}>
            <Plus className="h-4 w-4" />
            {c.cta}
          </button>
        </Link>
      ) : (
        <p className="text-xs text-gray-600 mb-4">
          <Link to="/settings" className="text-[#ccff00] underline underline-offset-2">Log in</Link> to create a profile
        </p>
      )}
      <Link to="/faq" className="mt-4 text-xs text-gray-600 hover:text-gray-400 underline underline-offset-2 transition-colors">
        Have questions? Check the FAQ →
      </Link>
    </div>
  );
}

// ─── Page ─────────────────────────────────────────────────────────────────────

export default function LabPage() {
  const { t } = useTranslation();

  useSeoMeta({
    title: 'The Lab - SkateSpots',
    description: 'Find skateboarding coaches, filmers, photographers, and video editors.',
  });

  const { user } = useCurrentUser();
  const { data: profiles, isLoading } = useLabProfiles(100);

  const [searchQuery, setSearchQuery] = useState('');
  const [locationQuery, setLocationQuery] = useState('');
  const [selectedSkills, setSelectedSkills] = useState<string[]>([]);
  const [serviceType, setServiceType] = useState<ServiceType>('coaching');
  const [trustFilter, setTrustFilter] = useState<TrustFilterLevel>('all');
  const [sortBy, setSortBy] = useState<SortOption>('recent');
  const [filtersOpen, setFiltersOpen] = useState(false);

  const profilePubkeys = useMemo(() => profiles?.map((p) => p.pubkey) || [], [profiles]);
  const { data: trustScores } = useBatchTrustScores(profilePubkeys);
  const getTrustScore = (pubkey: string) => trustScores?.get(pubkey);

  // Fetch all authors for search-by-name support
  // We collect metadata from ProfileCard's useAuthor calls via a shared memo approach
  // The search includes displayName by filtering against the author metadata in ProfileCard
  // Since we can't call hooks in loops at the page level, we implement name search
  // by passing the searchQuery down and letting ProfileCard self-filter via a parent store.
  // Simpler: we filter by profile fields, and the rendered cards handle their own display.
  // Name search: we add it as a secondary match against profile.title (already done) but
  // also expose a `displayName` field via a lookup map we build from the query cache.
  // For now, profile.title is the coach's self-described role (e.g. "Skate Coach Berlin")
  // and the display name comes from kind 0. We add the genUserName fallback to search too.
  const displayNameMap = useMemo(() => {
    // Build a map of pubkey -> genUserName fallback for client-side name search
    const map = new Map<string, string>();
    profiles?.forEach((p) => {
      map.set(p.pubkey, genUserName(p.pubkey));
    });
    return map;
  }, [profiles]);

  const toggleSkill = (skill: string) => {
    setSelectedSkills((prev) =>
      prev.includes(skill) ? prev.filter((s) => s !== skill) : [...prev, skill]
    );
  };

  const removeSkill = (skill: string) => {
    setSelectedSkills((prev) => prev.filter((s) => s !== skill));
  };

  // Counts per tab (unfiltered by skills/search/location, just by type)
  const counts = useMemo<Record<ServiceType, number>>(() => {
    if (!profiles) return { coaching: 0, filming: 0, editing: 0, photography: 0, building: 0 };
    return {
      coaching: profiles.filter((p) => p.profileType === 'coach').length,
      filming: profiles.filter((p) => p.profileType === 'filmer').length,
      photography: profiles.filter((p) => p.profileType === 'photographer').length,
      editing: profiles.filter((p) => p.profileType === 'editor').length,
      building: profiles.filter((p) => p.profileType === 'builder').length,
    };
  }, [profiles]);

  const filteredProfiles = useMemo(() => {
    if (!profiles) return [];

    let filtered = profiles.filter((profile) => {
      if (serviceType === 'coaching' && profile.profileType !== 'coach') return false;
      if (serviceType === 'filming' && profile.profileType !== 'filmer') return false;
      if (serviceType === 'photography' && profile.profileType !== 'photographer') return false;
      if (serviceType === 'editing' && profile.profileType !== 'editor') return false;
      if (serviceType === 'building' && profile.profileType !== 'builder') return false;

      // Text search: title, bio, and genUserName fallback
      if (searchQuery) {
        const q = searchQuery.toLowerCase();
        const fallbackName = displayNameMap.get(profile.pubkey) ?? '';
        const matchesTitle = profile.title.toLowerCase().includes(q);
        const matchesBio = profile.bio?.toLowerCase().includes(q);
        const matchesName = fallbackName.toLowerCase().includes(q);
        if (!matchesTitle && !matchesBio && !matchesName) return false;
      }

      // Location filter (dedicated city search)
      if (locationQuery) {
        const lq = locationQuery.toLowerCase();
        const matchesLocation = profile.location?.toLowerCase().includes(lq);
        if (!matchesLocation) return false;
      }

      if (selectedSkills.length > 0) {
        if (!profile.skills.some((s) => selectedSkills.includes(s))) return false;
      }

      return true;
    });

    if (trustScores && trustFilter !== 'all') {
      filtered = filterByTrustLevel(filtered, trustFilter, getTrustScore);
    }

    filtered.sort((a, b) => {
      if (sortBy === 'trust') {
        const diff = (getTrustScore(b.pubkey) || 0) - (getTrustScore(a.pubkey) || 0);
        if (diff !== 0) return diff;
      }
      return b.createdAt - a.createdAt;
    });

    return filtered;
  }, [profiles, searchQuery, locationQuery, selectedSkills, serviceType, trustFilter, trustScores, sortBy, displayNameMap]);

  // Active filter count (skills + trust + sort) — location and search are separate quick filters
  const activeFilterCount =
    selectedSkills.length +
    (trustFilter !== 'all' ? 1 : 0) +
    (sortBy !== 'recent' ? 1 : 0);

  const handleServiceChange = (type: ServiceType) => {
    setServiceType(type);
    setSelectedSkills([]);
  };

  const handleClearAll = () => {
    setSelectedSkills([]);
    setTrustFilter('all');
    setSortBy('recent');
  };

  return (
    <Layout>
      <div className="container px-4 py-6 md:py-10 max-w-4xl mx-auto">

        {/* ── Page header ── */}
        <div className="flex items-start justify-between gap-4 mb-6">
          <div>
            <h1 className="text-4xl md:text-5xl font-black uppercase leading-none mb-1">
              <span className="neon-red">THE</span>{' '}
              <span className="neon-orange">LAB</span>
            </h1>
            <p className="text-gray-500 text-sm">{t('labPage.subtitle')}</p>
          </div>

          {/* CTA — logged in: FAB dropdown. Logged out: small badge */}
          {user ? (
            <OfferFAB />
          ) : (
            <Badge variant="outline" className="border-yellow-500/40 text-yellow-500/80 text-xs px-2.5 py-1 flex-shrink-0">
              🔒 Login to offer services
            </Badge>
          )}
        </div>

        {/* ── Sticky toolbar (tabs + search + location + filter button + active chips) ── */}
        <LabToolbar
          serviceType={serviceType}
          onServiceChange={handleServiceChange}
          searchQuery={searchQuery}
          onSearchChange={setSearchQuery}
          locationQuery={locationQuery}
          onLocationChange={setLocationQuery}
          activeFilterCount={activeFilterCount}
          onOpenFilters={() => setFiltersOpen(true)}
          counts={counts}
          totalCount={filteredProfiles.length}
          isLoading={isLoading}
          selectedSkills={selectedSkills}
          onRemoveSkill={removeSkill}
          sortBy={sortBy}
          trustFilter={trustFilter}
          onClearAll={handleClearAll}
        />

        {/* ── Results grid ── */}
        <div className="mt-5">
          {isLoading ? (
            <div className="grid sm:grid-cols-2 gap-3">
              {Array.from({ length: 6 }).map((_, i) => <SkeletonCard key={i} />)}
            </div>
          ) : filteredProfiles.length > 0 ? (
            <div className="grid sm:grid-cols-2 gap-3">
              {filteredProfiles.map((profile) => (
                <ProfileCard key={profile.id} profile={profile} />
              ))}
            </div>
          ) : (
            <EmptyState serviceType={serviceType} user={!!user} />
          )}
        </div>

        {/* ── Crews in this scene ── */}
        <LabCrewsStrip serviceType={serviceType} />
      </div>

      {/* ── Filter drawer ── */}
      <FilterDrawer
        open={filtersOpen}
        onClose={() => setFiltersOpen(false)}
        serviceType={serviceType}
        selectedSkills={selectedSkills}
        onToggleSkill={toggleSkill}
        sortBy={sortBy}
        onSortChange={setSortBy}
        trustFilter={trustFilter}
        onTrustChange={setTrustFilter}
        onClearAll={handleClearAll}
        activeCount={activeFilterCount}
      />
    </Layout>
  );
}