"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { authAPI } from "@/lib/api";
import { useAuthStore } from "@/stores/authStore";

export default function RegisterPage() {
  const router = useRouter();
  const setAuth = useAuthStore((s) => s.setAuth);
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");
  const [loading, setLoading] = useState(false);

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    setError("");
    if (password.length < 8) {
      setError("Password must be at least 8 characters.");
      return;
    }
    setLoading(true);
    try {
      const { access_token, user } = await authAPI.register(email.trim(), password);
      setAuth(access_token, { id: user.id, email: user.email, is_admin: user.is_admin });
      router.replace("/");
    } catch (err: unknown) {
      const msg =
        (err as { response?: { data?: { detail?: string } } })?.response?.data?.detail ||
        "Registration failed. Please try again.";
      setError(msg);
    } finally {
      setLoading(false);
    }
  }

  return (
    <div className="min-h-screen flex items-center justify-center bg-background">
      <div className="w-full max-w-sm space-y-6 p-8 border rounded-lg bg-card shadow-sm">
        <div>
          <h1 className="text-2xl font-bold">PocketVeto</h1>
          <p className="text-muted-foreground text-sm mt-1">Create your account</p>
        </div>

        <form onSubmit={handleSubmit} className="space-y-4">
          <div className="space-y-1">
            <label className="text-sm font-medium" htmlFor="email">Email</label>
            <input
              id="email"
              type="email"
              required
              autoComplete="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              className="w-full px-3 py-2 border rounded-md bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
            />
          </div>

          <div className="space-y-1">
            <label className="text-sm font-medium" htmlFor="password">
              Password <span className="text-muted-foreground font-normal">(min 8 chars)</span>
            </label>
            <input
              id="password"
              type="password"
              required
              autoComplete="new-password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              className="w-full px-3 py-2 border rounded-md bg-background text-sm focus:outline-none focus:ring-2 focus:ring-ring"
            />
          </div>

          {error && <p className="text-sm text-destructive">{error}</p>}

          <button
            type="submit"
            disabled={loading}
            className="w-full py-2 px-4 bg-primary text-primary-foreground rounded-md text-sm font-medium hover:bg-primary/90 disabled:opacity-50"
          >
            {loading ? "Creating account..." : "Create account"}
          </button>
        </form>

        <p className="text-sm text-center text-muted-foreground">
          Already have an account?{" "}
          <Link href="/login" className="text-primary hover:underline">
            Sign in
          </Link>
        </p>
      </div>
    </div>
  );
}