"use client";

import { useEffect, useState } from "react";
import { useSession } from "next-auth/react";
import { useRouter } from "next/navigation";
import Navigation from "@/components/Navigation";

interface UserPreferences {
  id: string;
  userId: string;
  homeBackground: string | null;
  eventsBackground: string | null;
  leaderboardBackground: string | null;
  user: {
    id: string;
    username: string;
    email: string;
  };
}

export default function AdminPage() {
  const { data: session, status } = useSession();
  const router = useRouter();
  const [preferences, setPreferences] = useState<UserPreferences[]>([]);
  const [loading, setLoading] = useState(true);
  const [editingUserId, setEditingUserId] = useState<string | null>(null);
  const [formData, setFormData] = useState({
    homeBackground: "",
    eventsBackground: "",
    leaderboardBackground: "",
  });

  useEffect(() => {
    if (status === "unauthenticated") {
      router.push("/login");
      return;
    }

    if (status === "authenticated" && session?.user?.role !== "ADMIN") {
      router.push("/");
      return;
    }

    if (status === "authenticated" && session?.user?.role === "ADMIN") {
      fetchPreferences();
    }
  }, [status, session, router]);

  const fetchPreferences = async () => {
    try {
      const response = await fetch("/api/admin/preferences");
      if (response.ok) {
        const data = await response.json();
        setPreferences(data);
      }
    } catch (error) {
      console.error("Error fetching preferences:", error);
    } finally {
      setLoading(false);
    }
  };

  const handleEdit = (pref: UserPreferences) => {
    setEditingUserId(pref.userId);
    setFormData({
      homeBackground: pref.homeBackground || "",
      eventsBackground: pref.eventsBackground || "",
      leaderboardBackground: pref.leaderboardBackground || "",
    });
  };

  const handleSave = async () => {
    if (!editingUserId) return;

    try {
      const response = await fetch("/api/admin/preferences", {
        method: "PUT",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          userId: editingUserId,
          ...formData,
        }),
      });

      if (response.ok) {
        await fetchPreferences();
        setEditingUserId(null);
        setFormData({
          homeBackground: "",
          eventsBackground: "",
          leaderboardBackground: "",
        });
      }
    } catch (error) {
      console.error("Error updating preferences:", error);
    }
  };

  const handleCancel = () => {
    setEditingUserId(null);
    setFormData({
      homeBackground: "",
      eventsBackground: "",
      leaderboardBackground: "",
    });
  };

  if (status === "loading" || loading) {
    return (
      <main className="min-h-screen bg-black relative">
        <Navigation />
        <div className="flex items-center justify-center min-h-screen text-pixel-gold">
          Chargement...
        </div>
      </main>
    );
  }

  return (
    <main className="min-h-screen bg-black relative">
      <Navigation />
      <section className="relative w-full min-h-screen flex flex-col items-center overflow-hidden pt-24 pb-16">
        <div className="relative z-10 w-full max-w-6xl mx-auto px-8 py-16">
          <h1 className="text-4xl font-gaming font-black mb-8 text-center">
            <span className="bg-gradient-to-r from-pixel-gold via-orange-400 to-pixel-gold bg-clip-text text-transparent">
              ADMIN - GESTION DES PRÉFÉRENCES UI
            </span>
          </h1>

          <div className="bg-black/80 border border-pixel-gold/30 rounded-lg p-6 backdrop-blur-sm">
            <div className="space-y-4">
              {preferences.map((pref) => (
                <div
                  key={pref.id}
                  className="bg-black/60 border border-pixel-gold/20 rounded p-4"
                >
                  <div className="flex justify-between items-start mb-4">
                    <div>
                      <h3 className="text-pixel-gold font-bold text-lg">
                        {pref.user.username}
                      </h3>
                      <p className="text-gray-400 text-sm">{pref.user.email}</p>
                    </div>
                    {editingUserId !== pref.userId && (
                      <button
                        onClick={() => handleEdit(pref)}
                        className="px-4 py-2 border border-pixel-gold/50 bg-black/60 text-white uppercase text-xs tracking-widest rounded hover:bg-pixel-gold/10 transition"
                      >
                        Modifier
                      </button>
                    )}
                  </div>

                  {editingUserId === pref.userId ? (
                    <div className="space-y-3">
                      <div>
                        <label className="block text-sm text-gray-300 mb-1">
                          Background Home
                        </label>
                        <input
                          type="text"
                          value={formData.homeBackground}
                          onChange={(e) =>
                            setFormData({
                              ...formData,
                              homeBackground: e.target.value,
                            })
                          }
                          placeholder="/got-2.jpg"
                          className="w-full px-3 py-2 bg-black/60 border border-pixel-gold/30 rounded text-white text-sm"
                        />
                      </div>
                      <div>
                        <label className="block text-sm text-gray-300 mb-1">
                          Background Events
                        </label>
                        <input
                          type="text"
                          value={formData.eventsBackground}
                          onChange={(e) =>
                            setFormData({
                              ...formData,
                              eventsBackground: e.target.value,
                            })
                          }
                          placeholder="/got-2.jpg"
                          className="w-full px-3 py-2 bg-black/60 border border-pixel-gold/30 rounded text-white text-sm"
                        />
                      </div>
                      <div>
                        <label className="block text-sm text-gray-300 mb-1">
                          Background Leaderboard
                        </label>
                        <input
                          type="text"
                          value={formData.leaderboardBackground}
                          onChange={(e) =>
                            setFormData({
                              ...formData,
                              leaderboardBackground: e.target.value,
                            })
                          }
                          placeholder="/leaderboard-bg.jpg"
                          className="w-full px-3 py-2 bg-black/60 border border-pixel-gold/30 rounded text-white text-sm"
                        />
                      </div>
                      <div className="flex gap-2">
                        <button
                          onClick={handleSave}
                          className="px-4 py-2 border border-green-500/50 bg-green-900/20 text-green-400 uppercase text-xs tracking-widest rounded hover:bg-green-900/30 transition"
                        >
                          Enregistrer
                        </button>
                        <button
                          onClick={handleCancel}
                          className="px-4 py-2 border border-gray-600/50 bg-gray-900/20 text-gray-400 uppercase text-xs tracking-widest rounded hover:bg-gray-900/30 transition"
                        >
                          Annuler
                        </button>
                      </div>
                    </div>
                  ) : (
                    <div className="space-y-2 text-sm text-gray-400">
                      <div>
                        Home: {pref.homeBackground || "Par défaut"}
                      </div>
                      <div>
                        Events: {pref.eventsBackground || "Par défaut"}
                      </div>
                      <div>
                        Leaderboard:{" "}
                        {pref.leaderboardBackground || "Par défaut"}
                      </div>
                    </div>
                  )}
                </div>
              ))}

              {preferences.length === 0 && (
                <div className="text-center text-gray-400 py-8">
                  Aucune préférence trouvée
                </div>
              )}
            </div>
          </div>
        </div>
      </section>
    </main>
  );
}