"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import { motion } from "framer-motion";
import { Lock, User, ChefHat, Eye, EyeOff } from "lucide-react";
import { authApi } from "@/lib/api";

export default function AdminLoginPage() {
  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");
  const [showPassword, setShowPassword] = useState(false);
  const [error, setError] = useState("");
  const [loading, setLoading] = useState(false);
  const router = useRouter();

  const handleLogin = async (e: React.FormEvent) => {
    e.preventDefault();
    setError("");
    setLoading(true);

    try {
      const res = await authApi.login(username, password);
      if (res.success && res.data?.token) {
        localStorage.setItem("admin_token", res.data.token);
        localStorage.setItem("admin_user", JSON.stringify(res.data));
        router.push("/admin");
      }
    } catch (err) {
      setError(err instanceof Error ? err.message : "Giriş başarısız.");
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="min-h-screen flex items-center justify-center relative overflow-hidden">
      {/* Background */}
      <div className="absolute inset-0 bg-gradient-to-br from-background via-background to-primary/5" />
      <div className="absolute top-20 right-20 w-96 h-96 bg-primary/5 rounded-full blur-3xl" />
      <div className="absolute bottom-20 left-20 w-72 h-72 bg-emerald/5 rounded-full blur-3xl" />

      <motion.div
        initial={{ opacity: 0, y: 30 }}
        animate={{ opacity: 1, y: 0 }}
        className="relative w-full max-w-sm mx-4"
      >
        <div className="bg-card border border-border/50 rounded-2xl p-8 shadow-2xl shadow-primary/5">
          {/* Logo */}
          <div className="text-center mb-8">
            <div className="w-16 h-16 bg-gradient-to-br from-primary to-amber rounded-2xl flex items-center justify-center mx-auto mb-4 shadow-lg shadow-primary/25">
              <ChefHat className="w-8 h-8 text-primary-foreground" />
            </div>
            <h1 className="text-2xl font-bold">Yönetim Paneli</h1>
            <p className="text-sm text-muted-foreground mt-1">Lezzet Sarayı</p>
          </div>

          <form onSubmit={handleLogin} className="space-y-4">
            <div className="space-y-2">
              <label className="text-xs font-medium text-muted-foreground">Kullanıcı Adı</label>
              <div className="relative">
                <User className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
                <input
                  type="text"
                  value={username}
                  onChange={(e) => setUsername(e.target.value)}
                  placeholder="admin"
                  className="w-full bg-muted/50 border border-border/50 rounded-xl py-3 pl-10 pr-4 text-sm focus:outline-none focus:ring-2 focus:ring-primary/30"
                  required
                />
              </div>
            </div>

            <div className="space-y-2">
              <label className="text-xs font-medium text-muted-foreground">Şifre</label>
              <div className="relative">
                <Lock className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
                <input
                  type={showPassword ? "text" : "password"}
                  value={password}
                  onChange={(e) => setPassword(e.target.value)}
                  placeholder="••••••"
                  className="w-full bg-muted/50 border border-border/50 rounded-xl py-3 pl-10 pr-10 text-sm focus:outline-none focus:ring-2 focus:ring-primary/30"
                  required
                />
                <button
                  type="button"
                  onClick={() => setShowPassword(!showPassword)}
                  className="absolute right-3 top-1/2 -translate-y-1/2"
                >
                  {showPassword ? <EyeOff className="w-4 h-4 text-muted-foreground" /> : <Eye className="w-4 h-4 text-muted-foreground" />}
                </button>
              </div>
            </div>

            {error && (
              <div className="bg-destructive/10 border border-destructive/20 rounded-lg p-3 text-sm text-destructive">
                {error}
              </div>
            )}

            <button
              type="submit"
              disabled={loading}
              className="w-full bg-gradient-to-r from-primary to-amber py-3 rounded-xl text-primary-foreground font-bold text-sm shadow-lg shadow-primary/25 disabled:opacity-50 flex items-center justify-center gap-2"
            >
              {loading ? (
                <div className="w-4 h-4 border-2 border-primary-foreground/30 border-t-primary-foreground rounded-full animate-spin" />
              ) : (
                "Giriş Yap"
              )}
            </button>
          </form>
        </div>
      </motion.div>
    </div>
  );
}