"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";

export default function LoginPage() {
  const [email, setEmail] = useState("");
  const [loading, setLoading] = useState(false);
  const router = useRouter();

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

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

      const data = await res.json();

      if (data.success) {
        // Store user and family info
        localStorage.setItem("user_id", data.userId);
        localStorage.setItem("user_email", data.email);
        if (data.familyId) {
          localStorage.setItem("family_id", data.familyId);
        }
        if (data.family) {
          localStorage.setItem("family", JSON.stringify(data.family));
        }
        router.push("/");
      } else {
        alert(data.error || "Sign in failed");
      }
    } catch (err) {
      console.error(err);
    }

    setLoading(false);
  };

  return (
    <div className="min-h-screen flex items-center justify-center bg-gradient-to-br from-rose-50 to-amber-50">
      <div className="w-full max-w-md p-8 text-center">
        <h1 className="text-4xl font-bold mb-2">Tia</h1>
        <p className="text-gray-600 mb-8">Your baby tracking companion</p>

        <form onSubmit={handleSubmit} className="space-y-4">
          <input
            type="email"
            placeholder="Enter your email"
            value={email}
            onChange={(e) => setEmail(e.target.value)}
            className="w-full p-4 border rounded-2xl bg-white shadow-sm"
            required
          />
          <button
            type="submit"
            disabled={loading}
            className="w-full p-4 bg-rose-400 text-white rounded-2xl font-medium"
          >
            {loading ? "Signing in..." : "Sign In"}
          </button>
        </form>
      </div>
    </div>
  );
}