"use client";

import { useState, FormEvent } from "react";
import { useAuth } from "@/lib/AuthContext";
import { useRouter } from "next/navigation";
import Link from "next/link";

export default function RegisterPage() {
  const { register } = useAuth();
  const router = useRouter();
  const [name, setName] = useState("");
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");
  const [loading, setLoading] = useState(false);

  const handleSubmit = async (e: FormEvent) => {
    e.preventDefault();
    setError("");

    if (!name.trim() || !email.trim() || !password.trim()) {
      setError("Please fill in all fields");
      return;
    }

    if (password.length < 6) {
      setError("Password must be at least 6 characters");
      return;
    }

    setLoading(true);
    try {
      await register(email.trim(), name.trim(), password);
      router.push("/");
    } catch (err: unknown) {
      const message =
        err instanceof Error
          ? err.message
          : "Registration failed. Please try again.";
      setError(message);
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="min-h-dvh bg-[#0a0a0f] flex flex-col items-center justify-center px-6">
      <div className="w-full max-w-sm">
        {/* Logo / Brand */}
        <div className="text-center mb-8">
          <div className="w-16 h-16 rounded-2xl bg-gradient-to-br from-[#D4AF37]/20 to-[#D4AF37]/5 border border-[#D4AF37]/30 flex items-center justify-center mx-auto mb-4">
            <span className="text-3xl">☪️</span>
          </div>
          <h1 className="text-2xl font-bold text-white">Join Falah</h1>
          <p className="text-sm text-gray-500 mt-1">
            Start your Islamic lifestyle journey
          </p>
        </div>

        {/* Error */}
        {error && (
          <div className="mb-4 p-3 rounded-xl bg-red-900/20 border border-red-800/40 text-red-400 text-sm text-center">
            {error}
          </div>
        )}

        {/* Form */}
        <form onSubmit={handleSubmit} className="space-y-4">
          <div>
            <label
              htmlFor="name"
              className="block text-xs font-medium text-gray-500 mb-1.5 uppercase tracking-wider"
            >
              Name
            </label>
            <input
              id="name"
              type="text"
              value={name}
              onChange={(e) => setName(e.target.value)}
              placeholder="Your name"
              autoComplete="name"
              autoFocus
              className="w-full bg-[#111118] border border-gray-800/60 rounded-xl px-4 py-3 text-white placeholder-gray-600 focus:outline-none focus:border-[#D4AF37]/50 focus:ring-1 focus:ring-[#D4AF37]/30 transition"
            />
          </div>

          <div>
            <label
              htmlFor="email"
              className="block text-xs font-medium text-gray-500 mb-1.5 uppercase tracking-wider"
            >
              Email
            </label>
            <input
              id="email"
              type="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              placeholder="you@example.com"
              autoComplete="email"
              className="w-full bg-[#111118] border border-gray-800/60 rounded-xl px-4 py-3 text-white placeholder-gray-600 focus:outline-none focus:border-[#D4AF37]/50 focus:ring-1 focus:ring-[#D4AF37]/30 transition"
            />
          </div>

          <div>
            <label
              htmlFor="password"
              className="block text-xs font-medium text-gray-500 mb-1.5 uppercase tracking-wider"
            >
              Password
            </label>
            <input
              id="password"
              type="password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              placeholder="At least 6 characters"
              autoComplete="new-password"
              className="w-full bg-[#111118] border border-gray-800/60 rounded-xl px-4 py-3 text-white placeholder-gray-600 focus:outline-none focus:border-[#D4AF37]/50 focus:ring-1 focus:ring-[#D4AF37]/30 transition"
            />
          </div>

          <button
            type="submit"
            disabled={loading}
            className="w-full py-3 rounded-xl bg-[#D4AF37] text-[#0a0a0f] font-semibold text-sm active:opacity-80 disabled:opacity-50 transition"
          >
            {loading ? (
              <span className="flex items-center justify-center gap-2">
                <span className="w-4 h-4 rounded-full border-2 border-[#0a0a0f]/30 border-t-[#0a0a0f] animate-spin" />
                Creating account...
              </span>
            ) : (
              "Create Account"
            )}
          </button>
        </form>

        {/* Sign in link */}
        <div className="text-center mt-6">
          <p className="text-xs text-gray-600">
            Already have an account?{" "}
            <Link
              href="/login"
              className="text-[#D4AF37] font-medium hover:underline"
            >
              Sign in
            </Link>
          </p>
        </div>

        {/* Bonus info */}
        <div className="mt-6 rounded-xl bg-[#111118] border border-gray-800/60 p-3 text-center">
          <p className="text-xs text-gray-600 uppercase tracking-wider mb-1">
            New Member Bonus
          </p>
          <p className="text-xs text-gray-500">
            Get <span className="text-[#D4AF37] font-semibold">5,000 FLH</span>{" "}
            free on sign up + 7-day premium trial
          </p>
        </div>
      </div>
    </div>
  );
}