"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Image from "next/image";
import Link from "next/link";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Loader2, ArrowRight } from "lucide-react";
import { motion } from "framer-motion";
import { toast } from "@/hooks/use-toast";

// Matches LoginPage background
const AuthBackground = () => (
  <div className="absolute inset-0 overflow-hidden pointer-events-none">
    <div className="absolute inset-0 bg-black" />
    <div className="absolute top-0 left-0 w-full h-full bg-gradient-to-br from-indigo-500/20 via-purple-500/10 to-transparent" />
    <div className="absolute top-1/4 left-1/4 w-96 h-96 bg-blue-500/20 rounded-full blur-3xl opacity-50 animate-pulse" />
    <div className="absolute bottom-1/4 right-1/4 w-96 h-96 bg-purple-500/20 rounded-full blur-3xl opacity-50 animate-pulse delay-1000" />
  </div>
);

export default function RegisterPage() {
  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");
  const [invitationCode, setInvitationCode] = useState("");
  const [loading, setLoading] = useState(false);
  const router = useRouter();

  async function handleRegister(e: React.FormEvent) {
    e.preventDefault();
    setLoading(true);

    try {
      const res = await fetch(`/api/auth/register`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ username, password, invitationCode }),
      });

      const data = await res.json();

      if (res.ok) {
        toast({
          title: "Account Created! 🎉",
          description: "Welcome to Ember Market. Redirecting to login...",
          variant: "default",
        });
        setTimeout(() => router.push("/auth/login"), 1500);
      } else {
        toast({
          title: "Registration Failed",
          description: data.error || "Please check your details.",
          variant: "destructive",
        });
        setLoading(false);
      }
    } catch (error) {
      toast({
        title: "Error",
        description: "Something went wrong. Please try again.",
        variant: "destructive",
      });
      setLoading(false);
    }
  }

  return (
    <div className="relative flex items-center justify-center min-h-screen overflow-hidden">
      <AuthBackground />

      <div className="flex flex-col items-center w-full px-4 text-center z-10">
        <motion.div
          initial={{ opacity: 0, y: 20 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.5 }}
          className="w-full max-w-md"
        >
          <div className="overflow-hidden rounded-2xl border border-white/10 shadow-2xl bg-black/40 backdrop-blur-xl p-8">
            <div className="text-center mb-8">
              <h2 className="text-xl font-semibold text-white">Create your account</h2>
              <p className="mt-2 text-sm text-zinc-400">Start managing your store today</p>
            </div>

            <form className="space-y-5" onSubmit={handleRegister}>
              <div className="space-y-4 text-left">
                <div className="space-y-2">
                  <Label htmlFor="username" className="text-zinc-300">Username</Label>
                  <Input
                    id="username"
                    name="username"
                    type="text"
                    autoComplete="username"
                    required
                    value={username}
                    onChange={(e) => setUsername(e.target.value)}
                    className="bg-white/5 border-white/10 text-white placeholder:text-zinc-500 focus:border-indigo-500/50 focus:ring-indigo-500/20 transition-all duration-300"
                    placeholder="Choose a username"
                    disabled={loading}
                  />
                </div>
                <div className="space-y-2">
                  <Label htmlFor="password" className="text-zinc-300">Password</Label>
                  <Input
                    id="password"
                    name="password"
                    type="password"
                    autoComplete="new-password"
                    required
                    value={password}
                    onChange={(e) => setPassword(e.target.value)}
                    className="bg-white/5 border-white/10 text-white placeholder:text-zinc-500 focus:border-indigo-500/50 focus:ring-indigo-500/20 transition-all duration-300"
                    placeholder="Create a strong password"
                    disabled={loading}
                  />
                </div>
                <div className="space-y-2">
                  <Label htmlFor="invitationCode" className="text-zinc-300">Invitation Code</Label>
                  <Input
                    id="invitationCode"
                    name="invitationCode"
                    type="text"
                    required
                    value={invitationCode}
                    onChange={(e) => setInvitationCode(e.target.value)}
                    className="bg-white/5 border-white/10 text-white placeholder:text-zinc-500 focus:border-indigo-500/50 focus:ring-indigo-500/20 transition-all duration-300"
                    placeholder="Enter your invite code"
                    disabled={loading}
                  />
                </div>
              </div>

              <Button
                type="submit"
                className="w-full h-11 font-medium bg-gradient-to-r from-indigo-600 to-purple-600 hover:from-indigo-500 hover:to-purple-500 text-white shadow-lg shadow-indigo-500/25 transition-all duration-300"
                disabled={loading}
              >
                {loading ? (
                  <span className="flex items-center justify-center gap-2">
                    <Loader2 className="h-4 w-4 animate-spin" />
                    Creating account...
                  </span>
                ) : (
                  "Create Account"
                )}
              </Button>
            </form>

            <div className="mt-8 pt-6 border-t border-white/10 text-center">
              <p className="text-sm text-zinc-400">
                Already have an account?{" "}
                <Link
                  href="/auth/login"
                  className="text-indigo-400 hover:text-indigo-300 font-medium transition-colors inline-flex items-center gap-1"
                >
                  Sign in <ArrowRight className="w-3 h-3" />
                </Link>
              </p>
            </div>
          </div>
        </motion.div>
      </div>
    </div>
  );
}