"use client";

import Image from "next/image";
import { useEffect, useState } from "react";
import type { Session } from "next-auth";
import { getBadge } from "../../lib/badges";

function useDailyStats() {
  const [today, setToday] = useState<number | null>(null);
  useEffect(() => {
    fetch("/api/stats")
      .then((r) => r.json())
      .then((d) => setToday(d.total))
      .catch(() => {});
  }, []);
  return today;
}

function useUserWins(enabled: boolean) {
  const [wins, setWins] = useState<number>(0);
  useEffect(() => {
    if (!enabled) return;
    fetch("/api/games")
      .then((r) => (r.ok ? r.json() : []))
      .then((games: unknown) => {
        if (Array.isArray(games)) {
          setWins((games as { won: boolean }[]).filter((g) => g.won).length);
        } else {
          setWins(0);
        }
      })
      .catch(() => setWins(0));
  }, [enabled]);
  return wins;
}

type HomeScreenProps = {
  playerName: string;
  setPlayerName: (v: string) => void;
  joinCode: string;
  setJoinCode: (v: string) => void;
  error: string | null;
  setError: (v: string | null) => void;
  loading: boolean;
  onCreateRoom: () => void;
  onJoinRoom: () => void;
  onSolo: () => void;
  session: Session | null;
  onShowAuth: () => void;
  onShowProfile: () => void;
  onShowLeaderboard: () => void;
  onDaily: () => void;
  onBlitz: () => void;
};

export function HomeScreen({
  playerName,
  setPlayerName,
  joinCode,
  setJoinCode,
  error,
  setError,
  loading,
  onCreateRoom,
  onJoinRoom,
  onSolo,
  session,
  onShowAuth,
  onShowProfile,
  onShowLeaderboard,
  onDaily,
  onBlitz,
}: HomeScreenProps) {
  const btnGhost =
    "min-h-9 px-3 rounded-lg text-xs sm:text-sm font-semibold bg-[#242424] border border-[#2e2e2e] text-[#f0f0f0] hover:bg-[#1a1a1a] cursor-pointer whitespace-nowrap";
  const today = useDailyStats();
  const wins = useUserWins(!!session?.user);
  const badge = session?.user ? getBadge(wins) : null;

  return (
    <div className="min-h-dvh w-full bg-[#0f0f0f] text-[#f0f0f0] animate-fade-in flex flex-col items-center justify-center px-4 py-16 gap-6 sm:gap-8">
      {/* Topbar */}
      <div className="fixed top-3 right-3 flex items-center gap-1.5 sm:gap-2 z-50">
        <button className={btnGhost} onClick={onShowLeaderboard}>
          🏆 Classement
        </button>
        {session?.user ? (
          <button
            className="flex items-center gap-1.5 sm:gap-2 bg-[#242424] border border-[#2e2e2e] rounded-full pl-1 pr-2.5 sm:pr-3 py-1 cursor-pointer hover:bg-[#1a1a1a]"
            onClick={onShowProfile}
          >
            {badge ? (
              // eslint-disable-next-line @next/next/no-img-element
              <img
                src={`/badges/${badge.file}.Png`}
                alt={badge.name}
                width={28}
                height={28}
                className="shrink-0 w-7 h-7 object-contain"
              />
            ) : (
              <span className="w-7 h-7 rounded-full bg-[#7c3aed] text-white flex items-center justify-center text-xs font-bold shrink-0">
                {session.user.name?.[0]?.toUpperCase() ?? "?"}
              </span>
            )}
            <span className="hidden sm:block max-w-28 truncate text-sm font-medium">
              {session.user.name}
            </span>
          </button>
        ) : (
          <button className={btnGhost} onClick={onShowAuth}>
            Connexion
          </button>
        )}
      </div>

      {/* Hero */}
      <div className="flex-1 flex flex-col items-center justify-center gap-6 sm:gap-8 w-full max-w-sm sm:max-w-md">
        <div className="text-center">
          <Image
            src="/wikirush.png"
            alt="WikiRush"
            width={320}
            height={320}
            className="w-40 sm:w-56 md:w-72 h-auto mx-auto mix-blend-screen"
            priority
          />
          <p className="mt-3 text-sm sm:text-base font-semibold text-[#f0f0f0] max-w-xs sm:max-w-sm mx-auto leading-relaxed tracking-wide">
            Navigue entre les articles Wikipedia pour atteindre la cible en
            premier !
          </p>
          {today !== null && (
            <p className="mt-2 text-xs text-[#888]">
              <span className="font-semibold text-[#f0f0f0]">
                {today.toLocaleString("fr-FR")}
              </span>{" "}
              partie{today > 1 ? "s" : ""} jouée{today > 1 ? "s" : ""} au total
            </p>
          )}
          {badge && (
            <div className="mt-3 flex items-center justify-center gap-2">
              {/* eslint-disable-next-line @next/next/no-img-element */}
              <img src={`/badges/${badge.file}.Png`} alt={badge.name} className="w-8 h-8 object-contain" />
              <span className="text-sm font-black text-[#a78bfa]">{badge.name}</span>
            </div>
          )}
        </div>

        {/* Form */}
        <div className="w-full flex flex-col gap-3 sm:gap-4">
          {error && (
            <div className="flex items-center justify-between gap-3 bg-red-950/40 border border-red-600 text-red-300 px-3 py-2.5 rounded-xl text-xs sm:text-sm">
              {error}
              <button
                onClick={() => setError(null)}
                className="shrink-0 px-1.5 py-0.5 rounded hover:bg-white/10 cursor-pointer"
              >
                ✕
              </button>
            </div>
          )}

          <input
            className="w-full min-h-11 px-3.5 bg-[#1a1a1a] border-[1.5px] border-[#2e2e2e] rounded-xl text-[#f0f0f0] text-sm outline-none focus:border-[#7c3aed] transition-colors"
            type="text"
            placeholder="Ton pseudo"
            value={playerName}
            onChange={(e) => setPlayerName(e.target.value)}
            maxLength={20}
            onKeyDown={(e) => e.key === "Enter" && onCreateRoom()}
          />

          {/* Multijoueur */}
          <div className="bg-[#1a1a1a] border border-[#2e2e2e] rounded-xl p-4 sm:p-5 flex flex-col gap-3">
            <h3 className="text-[10px] sm:text-xs font-bold text-[#888] uppercase tracking-wider">
              Multijoueur
            </h3>
            <button
              className="w-full min-h-11 rounded-xl text-sm font-semibold bg-[#7c3aed] text-white hover:bg-[#6d28d9] disabled:opacity-50 cursor-pointer transition-colors"
              onClick={onCreateRoom}
              disabled={loading}
            >
              {loading ? "Création..." : "Créer une partie"}
            </button>
            {/* Join row - colonne sur mobile, ligne sur sm+ */}
            <div className="flex flex-col sm:flex-row gap-2">
              <input
                className="flex-1 min-h-11 px-3.5 bg-[#0f0f0f] border-[1.5px] border-[#2e2e2e] rounded-xl text-[#f0f0f0] font-mono text-base sm:text-lg tracking-widest uppercase outline-none focus:border-[#7c3aed] transition-colors"
                type="text"
                placeholder="Code de la partie"
                value={joinCode}
                onChange={(e) =>
                  setJoinCode(e.target.value.toUpperCase().slice(0, 4))
                }
                maxLength={4}
                onKeyDown={(e) => e.key === "Enter" && onJoinRoom()}
              />
              <button
                className="w-full sm:w-auto min-h-11 px-5 rounded-xl text-sm font-semibold bg-[#2563eb] text-white hover:bg-[#1d4ed8] disabled:opacity-50 cursor-pointer shrink-0 transition-colors"
                onClick={onJoinRoom}
                disabled={loading}
              >
                Rejoindre
              </button>
            </div>
          </div>

          {/* Divider */}
          <div className="relative text-center text-[#888] text-xs py-1">
            <span className="relative z-10 px-3 bg-[#0f0f0f]">ou</span>
            <div className="absolute inset-x-0 top-1/2 h-px bg-[#2e2e2e]" />
          </div>

          {/* Solo */}
          <div className="bg-[#1a1a1a] border border-[#2e2e2e] rounded-xl p-4 sm:p-5 flex flex-col gap-3">
            <h3 className="text-[10px] sm:text-xs font-bold text-[#888] uppercase tracking-wider">
              Solo
            </h3>
            <button
              className="w-full min-h-11 rounded-xl text-sm font-semibold bg-[#242424] border border-[#2e2e2e] text-[#f0f0f0] hover:bg-[#1a1a1a] cursor-pointer transition-colors"
              onClick={onSolo}
            >
              🎯 Jouer en solo
            </button>
            <button
              className="w-full min-h-11 rounded-xl text-sm font-semibold bg-[#242424] border border-[#2e2e2e] text-[#f0f0f0] hover:bg-[#1a1a1a] cursor-pointer transition-colors"
              onClick={onDaily}
            >
              🗓 Défi du jour
            </button>
            <button
              className="w-full min-h-11 rounded-xl text-sm font-semibold bg-[#242424] border border-[#2e2e2e] text-[#f0f0f0] hover:bg-[#1a1a1a] cursor-pointer transition-colors"
              onClick={onBlitz}
            >
              ⚡ Mode Blitz - 2 min
            </button>
          </div>
        </div>
      </div>
    </div>
  );
}
