"use client";

import { Suspense, useState } from "react";
import { useRouter, useSearchParams } from "next/navigation";
import { AuthCard, AuthFooterLink } from "@/components/auth/auth-card";
import { useAuth } from "@/components/auth/auth-provider";
import { AuthError } from "@/lib/auth";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";

function LoginForm() {
  const router = useRouter();
  const params = useSearchParams();
  const { logIn } = useAuth();
  const [email, setEmail] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState<string | null>(null);
  const [submitting, setSubmitting] = useState(false);

  async function onSubmit(e: React.SyntheticEvent) {
    e.preventDefault();
    setError(null);
    setSubmitting(true);
    try {
      await logIn(email, password);
      router.push(params.get("next") ?? "/profile");
      router.refresh();
    } catch (err) {
      setError(err instanceof AuthError ? err.message : "Login failed.");
      setSubmitting(false);
    }
  }

  return (
    <AuthCard
      title="Welcome back"
      description="Log in to access your bookmarks, notes, and collections."
      footer={
        <div className="space-y-1">
          <AuthFooterLink prefix="No account?" href="/signup" label="Create one" />
          <AuthFooterLink prefix="Forgot your password?" href="/forgot-password" label="Reset it" />
        </div>
      }
    >
      <form onSubmit={onSubmit} className="space-y-6">
        <div className="space-y-1.5">
          <Label htmlFor="email">Email</Label>
          <Input
            id="email"
            type="email"
            autoComplete="email"
            required
            value={email}
            onChange={(e) => setEmail(e.target.value)}
          />
        </div>
        <div className="space-y-1.5">
          <Label htmlFor="password">Password</Label>
          <Input
            id="password"
            type="password"
            autoComplete="current-password"
            required
            value={password}
            onChange={(e) => setPassword(e.target.value)}
          />
        </div>
        <br />
        {error ? <p className="text-sm text-destructive">{error}</p> : null}
        <Button type="submit" disabled={submitting} className="w-full h-11 text-base">
          {submitting ? "Logging in…" : "Log in"}
        </Button>
      </form>
    </AuthCard>
  );
}

export default function LoginPage() {
  // useSearchParams must be inside Suspense for Next.js streaming.
  return (
    <Suspense fallback={null}>
      <LoginForm />
    </Suspense>
  );
}