"use client";

import { useState } from "react";
import { useRouter, useSearchParams } from "next/navigation";
import Link from "next/link";
import { supabaseBrowser } from "@/lib/supabase/client";
import { Card } from "@/components/ui/Card";
import { Input } from "@/components/ui/Input";
import { Button } from "@/components/ui/Button";

export default function LoginPage() {
  const router = useRouter();
  const params = useSearchParams();
  const next = params.get("next") || "/app";
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  async function onSubmit(e: React.FormEvent) {
    e.preventDefault();
    setLoading(true);
    setError(null);
    const supabase = supabaseBrowser();
    const { error } = await supabase.auth.signInWithPassword({ email, password });
    setLoading(false);
    if (error) return setError(error.message);
    router.push(next);
  }

  return (
    <div className="min-h-screen bg-thebe-bg flex items-center justify-center px-4">
      <Card className="w-full max-w-md">
        <h1 className="text-2xl font-semibold">Sign in</h1>
        <p className="mt-1 text-sm text-slate-600">Welcome back to Thebe.</p>
        <form className="mt-6 space-y-3" onSubmit={onSubmit}>
          <div>
            <label className="text-sm text-slate-600">Email</label>
            <Input value={email} onChange={(e) => setEmail(e.target.value)} type="email" required />
          </div>
          <div>
            <label className="text-sm text-slate-600">Password</label>
            <Input value={password} onChange={(e) => setPassword(e.target.value)} type="password" required />
          </div>
          {error && <div className="text-sm text-red-600">{error}</div>}
          <Button className="w-full" disabled={loading}>
            {loading ? "Signing in..." : "Sign in"}
          </Button>
        </form>
        <div className="mt-4 text-sm text-slate-600">
          No account? <Link href="/register" className="text-thebe-blue2 hover:underline">Create one</Link>
        </div>
      </Card>
    </div>
  );
}