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'use client';
import { useState } from "react";
import { useRouter } from "next/navigation";
import ErrorMessage from "./ErrorMessage";
import { BACKEND_ADDRESS } from "@/app/resources/ResourcesPaths";
import { Trans } from 'react-i18next';
import BigBlueButton from "./BigBlueButton";
import { useTranslation } from 'react-i18next';
export default function SubmitForm() {
const { t } = useTranslation();
const router = useRouter();
const [requiredVisible, setRequiredVisible] = useState(false);
const [email, setEmail] = useState('');
const [displayName, setDisplayName] = useState('');
const [file, setFile] = useState(null);
const [isSubmitting, setIsSubmitting] = useState(false);
const [submitStatus, setSubmitStatus] = useState(null); // 'success' | 'error'
const [errorMessage, setErrorMessage] = useState('');
const [submissionId, setSubmissionId] = useState(null);
const handleFileChange = (e) => {
setFile(e.target.files[0]);
};
const submitResults = async () => {
if (!email || !displayName || !file) {
setRequiredVisible(true);
return;
}
if (!file.name.toLowerCase().endsWith('.zip')) {
alert(t('submit_zipAlert'));
return;
}
setRequiredVisible(false);
setIsSubmitting(true);
const formData = new FormData();
formData.append('email', email);
formData.append('display_name', displayName);
formData.append('predictions_zip', file);
try {
const res = await fetch(`${BACKEND_ADDRESS}/submit`, {
method: "POST",
body: formData,
});
if (!res.ok) {
const err = await res.json().catch(() => null);
throw new Error(err?.detail || `HTTP ${res.status}`);
}
const json = await res.json();
const id = json.submission_id;
setSubmissionId(id);
localStorage.setItem('last_result_file', `${id}.json`);
localStorage.setItem('just_submitted', 'true');
setSubmitStatus('success');
} catch (err) {
setErrorMessage(err.message);
setSubmitStatus('error');
} finally {
setIsSubmitting(false);
}
};
const renderModal = () => {
if (submitStatus === 'success') {
return (
<div className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50">
<div className="bg-white p-6 rounded-2xl shadow-lg max-w-sm text-center">
<h3 className="text-xl font-semibold text-green-600">
{t('submit_successTitle')}
</h3>
<p className="mt-2">{t('submit_successMessage')}</p>
<BigBlueButton
className="mt-4 px-4 py-2 rounded-full shadow hover:shadow-md"
onClick={() => router.push(`/results/${submissionId}`)}
>
{t('submit_checkResults')}
</BigBlueButton>
</div>
</div>
);
}
if (submitStatus === 'error') {
return (
<div className="fixed inset-0 flex items-center justify-center bg-black bg-opacity-50">
<div className="bg-white p-6 rounded-2xl shadow-lg max-w-sm text-center">
<h3 className="text-xl font-semibold text-red-600">
{t('submit_errorTitle')}
</h3>
<p className="mt-2">
<Trans i18nKey="submit_errorMessage" values={{ errorMessage }}>
Submission error: {{ errorMessage }}
</Trans>
</p>
<button
className="mt-4 px-4 py-2 rounded-full shadow hover:shadow-md"
onClick={() => setSubmitStatus(null)}
>
{t('submit_closeButton')}
</button>
</div>
</div>
);
}
return null;
};
return (
<div className="relative">
<div className="space-y-6 bg-white rounded-xl shadow-md p-6 w-full max-w-xl mx-auto border border-gray-200">
<h2 className="text-2xl font-semibold text-gray-800 text-center">
{t('submit_formTitle')}
</h2>
<div className="space-y-2">
<label htmlFor="email" className="block text-sm font-medium text-gray-700">
{t('submit_labelEmail')}
</label>
<input
id="email"
type="email"
placeholder={t('submit_placeholderEmail')}
value={email}
onChange={(e) => setEmail(e.target.value)}
className="border border-gray-300 p-3 rounded-md w-full focus:ring-2 focus:ring-blue-500"
/>
</div>
<div className="space-y-2">
<label htmlFor="displayname" className="block text-sm font-medium text-gray-700">
{t('submit_labelDisplayName')}
</label>
<input
id="displayname"
type="text"
placeholder={t('submit_placeholderDisplayName')}
value={displayName}
onChange={(e) => setDisplayName(e.target.value)}
className="border border-gray-300 p-3 rounded-md w-full focus:ring-2 focus:ring-blue-500"
/>
</div>
<div className="space-y-2">
<label htmlFor="zipfile" className="block text-sm font-medium text-gray-700">
{t('submit_labelZip')}
</label>
<input
id="zipfile"
type="file"
accept=".zip"
onChange={handleFileChange}
className="border border-gray-300 p-3 rounded-md w-full focus:ring-2 focus:ring-blue-500"
/>
</div>
<ErrorMessage condition={requiredVisible}>
⚠️ Email, display name & ZIP are required.
</ErrorMessage>
<button
onClick={submitResults}
disabled={isSubmitting}
className="w-full bg-blue-600 text-white py-3 rounded-xl hover:bg-blue-700 mt-4"
>
{isSubmitting ? t('submit_submitting') : t('submit_button')}
</button>
{renderModal()}
</div>
</div>
);
}
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