"use client";

/**
 * SignUpForm — paired with LoginForm. Same callback contract:
 * `onSuccess` fires once the new account is logged in; callers decide
 * what to do next.
 */

import { useState } from "react";
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";

export function SignUpForm({ onSuccess }: { onSuccess?: () => void }) {
  const { signUp } = useAuth();
  const [name, setName] = useState("");
  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 signUp(email, password, name);
      onSuccess?.();
    } catch (err) {
      setError(err instanceof AuthError ? err.message : "Sign-up failed.");
    } finally {
      setSubmitting(false);
    }
  }

  return (
    <form onSubmit={onSubmit} className="space-y-5">
      <div className="space-y-1.5">
        <Label htmlFor="signup-name">Name</Label>
        <Input
          id="signup-name"
          type="text"
          autoComplete="name"
          required
          value={name}
          onChange={(e) => setName(e.target.value)}
        />
      </div>
      <div className="space-y-1.5">
        <Label htmlFor="signup-email">Email</Label>
        <Input
          id="signup-email"
          type="email"
          autoComplete="email"
          required
          value={email}
          onChange={(e) => setEmail(e.target.value)}
        />
      </div>
      <div className="space-y-1.5">
        <Label htmlFor="signup-password">Password</Label>
        <Input
          id="signup-password"
          type="password"
          autoComplete="new-password"
          minLength={8}
          required
          value={password}
          onChange={(e) => setPassword(e.target.value)}
        />
        <p className="text-xs text-muted-foreground">At least 8 characters.</p>
      </div>
      {error ? <p className="text-sm text-destructive">{error}</p> : null}
      <Button type="submit" disabled={submitting} className="w-full h-11 text-base">
        {submitting ? "Creating account…" : "Sign up"}
      </Button>
    </form>
  );
}