"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { Button } from "@/components/ui/Button";
import { Input } from "@/components/ui/Input";
import { apiFetch, ApiClientError } from "@/lib/api/client";

export default function LoginPage() {
  const router = useRouter();
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState<string | null>(null);
  const [submitting, setSubmitting] = useState(false);

  async function handleSubmit(e: React.FormEvent) {
    e.preventDefault();
    setError(null);
    setSubmitting(true);
    try {
      await apiFetch("/api/v1/auth/login", { method: "POST", body: JSON.stringify({ email, password }) });
      router.push("/dashboard");
      router.refresh();
    } catch (err) {
      setError(err instanceof ApiClientError ? err.message : "Something went wrong. Please try again.");
    } finally {
      setSubmitting(false);
    }
  }

  return (
    <div className="flex min-h-screen items-center justify-center bg-canvas px-4">
      <div className="w-full max-w-sm">
        <h1 className="mb-1 text-lg font-semibold text-ink">Log in</h1>
        <p className="mb-6 text-sm text-ink-muted">Access your WiFi operations dashboard.</p>

        <form onSubmit={handleSubmit} className="flex flex-col gap-4">
          <Input
            label="Email"
            type="email"
            name="email"
            autoComplete="email"
            required
            value={email}
            onChange={(e) => setEmail(e.target.value)}
          />
          <Input
            label="Password"
            type="password"
            name="password"
            autoComplete="current-password"
            required
            value={password}
            onChange={(e) => setPassword(e.target.value)}
          />

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

          <Button type="submit" disabled={submitting} className="mt-1 w-full">
            {submitting ? "Logging in…" : "Log in"}
          </Button>
        </form>

        <p className="mt-6 text-center text-sm text-ink-muted">
          New here?{" "}
          <Link href="/register" className="font-medium text-primary">
            Create an organization
          </Link>
        </p>
      </div>
    </div>
  );
}