import { FormEvent, useState } from "react";
import { useTranslation } from "react-i18next";
import { Link, useNavigate } from "react-router-dom";
import { authApi } from "@/api";
import { useAuthStore } from "@/store/auth";
import { Button } from "@/components/ui/Button";
import { Input } from "@/components/ui/Input";
import { Card, CardBody } from "@/components/ui/Card";

export function RegisterPage() {
  const { t } = useTranslation();
  const navigate = useNavigate();
  const { setAuth } = useAuthStore();
  const [email, setEmail] = useState("");
  const [username, setUsername] = useState("");
  const [password, setPassword] = useState("");
  const [error, setError] = useState("");
  const [loading, setLoading] = useState(false);

  const onSubmit = async (e: FormEvent) => {
    e.preventDefault();
    setError("");
    setLoading(true);
    try {
      const { access_token, user } = await authApi.register(email, username, password);
      setAuth(access_token, user);
      navigate("/dashboard");
    } catch (err: any) {
      setError(err.response?.data?.detail || t("errors.unknown"));
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="max-w-md mx-auto px-4 py-12">
      <h1 className="text-2xl font-serif text-center text-ink-100 mb-6">{t("auth.register_title")}</h1>
      <Card>
        <CardBody>
          <form onSubmit={onSubmit} className="space-y-4">
            <Input
              label={t("auth.email")}
              type="email"
              name="email"
              value={email}
              onChange={(e) => setEmail(e.target.value)}
              required
            />
            <Input
              label={t("auth.username")}
              type="text"
              name="username"
              value={username}
              onChange={(e) => setUsername(e.target.value)}
              required
            />
            <Input
              label={t("auth.password")}
              type="password"
              name="password"
              value={password}
              onChange={(e) => setPassword(e.target.value)}
              required
              minLength={6}
            />
            {error && <p className="text-sm text-red-400">{error}</p>}
            <Button type="submit" disabled={loading} className="w-full">
              {loading ? t("common.loading") : t("auth.register_btn")}
            </Button>
          </form>
          <p className="text-center mt-4 text-sm text-ink-400">
            <Link to="/login" className="text-accent-400 hover:underline">
              {t("auth.have_account")}
            </Link>
          </p>
        </CardBody>
      </Card>
    </div>
  );
}
