"use client";

import React from 'react';
import { 
  Users, 
  Store, 
  Clock, 
  MessageCircle,
  Eye,
  CheckCircle2,
  UserPlus
} from 'lucide-react';
import Link from 'next/link';

interface DashboardData {
  stats: {
    usersCount: number;
    businessCount: number;
    pendingCount: number;
    commentsCount: number;
    totalViews: number;
    uniqueVisitors: number;
  };
  latestBusinesses: Array<{
    id: string;
    name: string;
    category: string;
    logoUrl: string;
    location: string;
    createdAt: Date;
    verified: boolean;
    plan: string;
    owner?: {
      name: string;
      email: string;
    };
  }>;
  activities: Array<{
    id: string;
    type: 'comment' | 'user';
    title: string;
    subtitle: string;
    timestamp: Date;
    avatar?: string | null;
  }>;
}

import { useEffect } from 'react';
import { useSearchParams, useRouter } from 'next/navigation';
import toast from 'react-hot-toast';

export default function DashboardClient({ initialData }: { initialData: DashboardData }) {
  const { stats, latestBusinesses, activities } = initialData;
  const searchParams = useSearchParams();
  const router = useRouter();

  useEffect(() => {
    const unauthorized = searchParams.get('unauthorized');
    if (unauthorized) {
      toast.error(`Accès restreint : vous n'avez pas les autorisations pour accéder à ce module (${unauthorized}).`, {
        duration: 5000,
      });
      // Clean query param
      router.replace('/dashboard');
    }
  }, [searchParams, router]);

  const statCards = [
    { label: 'Utilisateurs', value: stats.usersCount, icon: Users, color: 'text-blue-400' },
    { label: 'Visiteurs Uniques', value: stats.uniqueVisitors, icon: Eye, color: 'text-indigo-400' },
    { label: 'Entrepreneurs', value: stats.businessCount, icon: Store, color: 'text-emerald-400' },
    { label: 'En attente', value: stats.pendingCount, icon: Clock, color: 'text-amber-400' },
    { label: 'Commentaires', value: stats.commentsCount, icon: MessageCircle, color: 'text-purple-400' },
    { label: 'Total Vues', value: stats.totalViews, icon: Eye, color: 'text-brand-400' },
  ];

  return (
    <div>
      <div className="mb-8">
        <h1 className="text-3xl font-bold text-white mb-2">Tableau de bord</h1>
        <p className="text-slate-400">Vue d'ensemble de l'activité sur la plateforme.</p>
      </div>

      <div className="stats-grid">
        {statCards.map((card) => (
          <div key={card.label} className="card">
            <div className="flex justify-between items-start mb-4">
              <div className={`p-2 rounded-lg bg-slate-800 ${card.color}`}>
                <card.icon className="w-6 h-6" />
              </div>
              <span className="text-2xl font-bold text-white">{card.value}</span>
            </div>
            <h3 className="text-slate-400 font-medium">{card.label}</h3>
          </div>
        ))}
      </div>

      <div className="grid grid-cols-1 lg:grid-cols-2 gap-8">
        {/* Derniers entrepreneurs */}
        <div className="card flex flex-col">
          <div className="flex justify-between items-center mb-6">
            <h2 className="text-xl font-bold text-white">Derniers entrepreneurs</h2>
            <Link href="/users" className="text-xs text-indigo-400 hover:underline font-semibold">
              Voir tout
            </Link>
          </div>

          <div className="space-y-4 flex-1">
            {latestBusinesses.length === 0 ? (
              <p className="text-slate-500 italic py-8 text-center">Aucune entreprise récente.</p>
            ) : (
              latestBusinesses.map((b) => (
                <div key={b.id} className="flex items-center justify-between p-3 rounded-xl bg-slate-800/40 hover:bg-slate-800/80 transition-colors border border-slate-800">
                  <div className="flex items-center gap-3 min-w-0">
                    <div className="w-10 h-10 rounded-lg bg-slate-800 overflow-hidden flex items-center justify-center border border-slate-700 flex-shrink-0">
                      {b.logoUrl ? (
                        <img src={b.logoUrl} alt={b.name} className="w-full h-full object-cover" />
                      ) : (
                        <Store className="w-4 h-4 text-slate-500" />
                      )}
                    </div>
                    <div className="min-w-0">
                      <div className="font-semibold text-white text-sm truncate">{b.name}</div>
                      <div className="text-xs text-slate-400 truncate">{b.category} • {b.location}</div>
                    </div>
                  </div>

                  <div className="flex items-center gap-2 flex-shrink-0 ml-3">
                    <span className={`text-[10px] font-bold px-2 py-0.5 rounded-full uppercase ${
                      b.plan === 'EMPIRE' ? 'bg-purple-500/10 text-purple-400 border border-purple-500/20' :
                      b.plan === 'BOOSTER' ? 'bg-amber-500/10 text-amber-400 border border-amber-500/20' :
                      'bg-slate-500/10 text-slate-400'
                    }`}>
                      {b.plan}
                    </span>
                    {b.verified ? (
                      <span title="Vérifié"><CheckCircle2 className="w-4 h-4 text-emerald-500" /></span>
                    ) : (
                      <span title="En attente"><Clock className="w-4 h-4 text-amber-500" /></span>
                    )}
                  </div>
                </div>
              ))
            )}
          </div>
        </div>

        {/* Activité récente */}
        <div className="card flex flex-col">
          <h2 className="text-xl font-bold text-white mb-6">Activité récente</h2>

          <div className="space-y-4 flex-1">
            {activities.length === 0 ? (
              <p className="text-slate-500 italic py-8 text-center">Aucune activité enregistrée.</p>
            ) : (
              activities.map((act) => (
                <div key={act.id} className="flex items-start gap-3.5 p-3 rounded-xl bg-slate-800/20 border border-slate-800/50">
                  <div className="mt-0.5 w-8 h-8 rounded-full bg-slate-800 flex items-center justify-center border border-slate-700 flex-shrink-0 overflow-hidden">
                    {act.avatar ? (
                      <img src={act.avatar} alt="" className="w-full h-full object-cover" />
                    ) : act.type === 'comment' ? (
                      <MessageCircle className="w-3.5 h-3.5 text-purple-400" />
                    ) : (
                      <UserPlus className="w-3.5 h-3.5 text-blue-400" />
                    )}
                  </div>
                  <div className="flex-1 min-w-0">
                    <div className="flex items-center justify-between gap-2">
                      <p className="text-xs font-semibold text-slate-200 truncate">{act.title}</p>
                      <span className="text-[10px] text-slate-500 flex-shrink-0">
                        {new Date(act.timestamp).toLocaleDateString('fr-FR', { day: 'numeric', month: 'short' })}
                      </span>
                    </div>
                    <p className="text-xs text-slate-400 mt-0.5 line-clamp-2">{act.subtitle}</p>
                  </div>
                </div>
              ))
            )}
          </div>
        </div>
      </div>
    </div>
  );
}