plateforme-corres2math/server_files/model.php

<?php

function loadUserValues()
{
	$_SESSION["user"] = $_SESSION["team"] = null;
	unset($_SESSION["user"]);
	unset($_SESSION["role"]);
	unset($_SESSION["team"]);
	unset($_SESSION["teams"]);

	if (isset($_SESSION["user_id"])) {
		$user = $_SESSION["user"] = User::fromId($_SESSION["user_id"]);
		if ($user == null) {
			unset($_SESSION["user_id"]);
			return;
		}

		$_SESSION["role"] = $user->getRole();

		$_SESSION["teams"] = $user->getTeams();

		if ($user->getRole() == Role::PARTICIPANT)
			$_SESSION["team"] = sizeof($_SESSION["teams"]) > 0 ? $_SESSION["teams"][0] : null;
	}

	if (isset($_GET["view-as-admin"])) {
	    if (isset($_SESSION["admin"])) {
	        $_SESSION["user_id"] = $_SESSION["admin"];
	        unset($_SESSION["admin"]);
        }
	    header("Location: /");
	    exit();
    }
}

function quitTeam($user_id = -1)
{
	global $DB, $URL_BASE;

	if ($user_id == -1)
		header("Location: $URL_BASE");

	$user_id = $user_id >= 0 ? $user_id : $_SESSION["user_id"];
	/** @var User $user */
	$user = User::fromId($user_id);
	$role = $user->getRole();

	if ($role == Role::ADMIN)
		return;

	if ($role == Role::PARTICIPANT)
		for ($i = 1; $i <= 5; ++$i)
			/** @noinspection SqlResolve */
			$DB->exec("UPDATE `teams` SET `participant_$i` = NULL WHERE `participant_$i` = $user_id;");
	else
		$DB->exec("UPDATE `teams` SET `encadrant` = NULL WHERE `encadrant` = $user_id;");
	$user->setTeamId(null);
	for ($i = 1; $i <= 4; ++$i) {
		/** @noinspection SqlResolve */
		$DB->exec("UPDATE `teams` SET `participant_$i` = `participant_" . strval($i + 1) . "`, `participant_" . strval($i + 1) . "` = NULL WHERE `participant_$i` IS NULL;");
	}

	$DB->exec("DELETE FROM `teams` WHERE `encadrant` IS NULL AND `participant_1` IS NULL;");
	$req = $DB->query("SELECT `file_id` FROM `documents` WHERE `user` = $user_id;");
	while (($data = $req->fetch()) !== false)
		unlink("$URL_BASE/files/" . $data["file_id"]);
	$DB->exec("DELETE FROM `documents` WHERE `user` = $user_id;");

	$_SESSION["team"] = null;
	unset($_SESSION["team"]);

	$_SESSION["teams"] = $user->getTeams();
}

function userExists($email)
{
	global $DB, $YEAR;

	$req = $DB->prepare("SELECT `id` FROM `users` WHERE `email` = ? AND `year` = '$YEAR';");
	$req->execute([$email]);
	return $req->fetch();
}

function teamExists($name)
{
	global $DB, $YEAR;

	$req = $DB->prepare("SELECT `id` FROM `teams` WHERE `name` = ? AND `year` = '$YEAR';");
	$req->execute([$name]);
	return $req->fetch();
}

function trigramExists($trigram)
{
	global $DB, $YEAR;

	$req = $DB->prepare("SELECT `id` FROM `teams` WHERE `trigram` = ? AND `year` = '$YEAR';");
	$req->execute([$trigram]);
	return $req->fetch();
}

function canValidate(Team $team)
{
	global $DB, $CONFIG;

	$can_validate = date("Y-m-d H:i:s") < $CONFIG->getInscriptionDate();
	$can_validate &= $team->getValidationStatus() == ValidationStatus::NOT_READY;
	$can_validate &= $team->getEncadrantId() != null;
	$can_validate &= $team->getParticipants()[2] != null;
	$can_validate &= preg_match("#[1-4]#", $team->getProblem());

	for ($i = 0; $i < 5; ++$i) {
		if ($team->getParticipants()[$i] === NULL)
			continue;

		$req = $DB->prepare("SELECT COUNT(*) AS `version` FROM `documents` WHERE `user` = ? AND `problem` = ?;");
		$req->execute([$team->getParticipants()[$i], $team->getProblem()]);
		$d = $req->fetch();
		$can_validate &= $d["version"] > 0;
	}

	return $can_validate;
}

function printDocuments($documents)
{
    if (sizeof($documents) == 0) {
        echo "<div class=\"alert alert-warning\">\nPas de document envoyé pour le moment.\n</div>\n";
        return;
    }

	echo "<div class=\"alert alert-info\">\n";
	foreach ($documents as $document) {
		$file_id = $document->getFileId();
		$user = User::fromId($document->getUserId());
		$surname = $user->getSurname();
		$first_name = $user->getFirstName();
		$name = "Autorisation de droit à l'image";
		$version = $document->getVersion();
		echo "$name de $first_name $surname (version $version) : <a href=\"/file/$file_id\"><strong>Télécharger</strong></a><br />\n";
	}
	echo "</div>\n";
}

function getZipFile($problem, $team_id = -1)
{
	global $LOCAL_PATH;

	$zip = new ZipArchive();

	$file_name = tempnam("tmp", "corres2math-");

	if ($zip->open($file_name, ZipArchive::CREATE) !== true) {
		die("Impossible de créer le fichier zip.");
	}

	$data = Document::getAllDocuments($problem, $team_id);

	/** @var Document $file */
	foreach ($data as $file) {
		$file_id = $file->getFileId();
		$user = User::fromId($file->getUserId());
        $mime_type = finfo_file(finfo_open(FILEINFO_MIME_TYPE), "$LOCAL_PATH/files/$file_id");
        $ext = $mime_type == "application/pdf" ? "pdf" : ($mime_type == "image/png" ? "png" : "jpg");
		$name = "Autorisation de droit à l'image de " . $user->getFirstName() . " " . $user->getSurname() . "." . $ext;

		$zip->addFile("$LOCAL_PATH/files/$file_id", $name);
	}

	$zip->close();

	return $file_name;
}

function exportUserData() {
    global $DB, $YEAR;

    $file_name = tempnam("tmp", "corres2math-");

    $csv = "Identifiant,Nom,Prénom,E-mail,École,Ville,Pays,Classe,Description,Rôle,Équipe,Autorise l'envoi de mails,Date d'inscription\n";

    $req = $DB->query("SELECT `id` FROM `users` WHERE `year` = $YEAR;");
    while (($data = $req->fetch()) !== false) {
        $user = User::fromId($data["id"]);

        $csv .= $user->getId() . ",";
        $csv .= $user->getSurname() . ",";
        $csv .= $user->getFirstName() . ",";
        $csv .= $user->getEmail() . ",";
        $csv .= $user->getSchool() . ",";
        $csv .= $user->getCity() . ",";
        $csv .= $user->getCountry() . ",";
        $csv .= SchoolClass::getTranslatedName($user->getClass()) . ",";
        $csv .= $user->getDescription() . ",";
        $csv .= Role::getTranslatedName($user->getRole()) . ",";
        $csv .= ($user->getTeamId() == null ? "" : Team::fromId($user->getTeamId())->getTrigram()) . ",";
        $csv .= ($user->doReceiveAnimathMails() ? "oui" : "non") . ",";
        $csv .= $user->getInscriptionDate() . "\n";
    }
    file_put_contents($file_name, $csv, FILE_APPEND);

    return $file_name;
}

function exportTeamData() {
    global $DB, $YEAR;

    $file_name = tempnam("tmp", "corres2math-");

    $csv = "Identifiant,Nom,Trigramme,Problème,Encadrant,Participant 1,Participant 2,Participant 3,Participant 4,Participant 5,"
        . "Date d'inscription,Autorise la publication,État de validation,Code d'accès\n";

    $req = $DB->query("SELECT `id` FROM `teams` WHERE `year` = $YEAR ORDER BY `problem`;");
    while (($data = $req->fetch()) !== false) {
        $team = Team::fromId($data["id"]);

        $csv .= $team->getId() . ",";
        $csv .= $team->getName() . ",";
        $csv .= $team->getTrigram() . ",";
        $csv .= $team->getProblem() . ",";
        $csv .= $team->getEncadrantId() . ",";
        $csv .= $team->getParticipants()[0] . ",";
        $csv .= $team->getParticipants()[1] . ",";
        $csv .= $team->getParticipants()[2] . ",";
        $csv .= $team->getParticipants()[3] . ",";
        $csv .= $team->getParticipants()[4] . ",";
        $csv .= $team->getInscriptionDate() . ",";
        $csv .= $team->allowPublish() . ",";
        $csv .= ValidationStatus::getTranslatedName($team->getValidationStatus()) . ",";
        $csv .= $team->getAccessCode() . "\n";
    }
    file_put_contents($file_name, $csv, FILE_APPEND);

    return $file_name;
}

function exportProblemsData() {
    global $DB, $URL_BASE, $YEAR;

    $file_name = tempnam("tmp", "corres2math-");

    $csv = "Équipe,Problème,Lien,Équipe 1 ayant reçu la vidéo,"
        . "Question 1,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 2,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 3,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 4,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 5,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 6,Pièce jointe,Réponse,Pièce jointe,"
        . "Vidéo de réponse,"
        . "Équipe 2 ayant reçu la vidéo,"
        . "Question 1,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 2,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 3,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 4,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 5,Pièce jointe,Réponse,Pièce jointe,"
        . "Question 6,Pièce jointe,Réponse,Pièce jointe,"
        . "Vidéo de réponse\n";

    $req = $DB->query("SELECT `id` FROM `teams` WHERE `validation_status` = 'VALIDATED' AND `year` = $YEAR ORDER BY `problem`;");
    while (($data = $req->fetch()) !== false) {
        $team = Team::fromId($data["id"]);
        $video = Video::getVideo(Reason::SOLUTION, $team);
        $questions_received = Question::getQuestionsTo($team);

        $csv .= $team->getTrigram() . ",";
        $csv .= $team->getProblem() . ",";
        $csv .= ($video == null ? "" : $video->getLink()) . ",";
        for ($i = 0; $i < 2; ++$i) {
            /** @var Question[] $questions */
            $questions = $questions_received[$i];
            $asker = Team::fromId($questions[0]->getFrom());
            $csv .= $asker->getTrigram() . ",";

            for ($j = 0; $j < 6; ++$j) {
                $question = $questions[$j];

                if ($question == null) {
                    $csv .= ",,,,";
                    continue;
                }

                $csv .= $question->getQuestion() . ",";
                $csv .= ($question->getAttachedFile() == null ? "" : $URL_BASE . "/file/" . $question->getAttachedFile()) . ',';
                $csv .= $question->getAnswer() . ",";
                $csv .= ($question->getAttachedFileAnswer() == null ? "" : $URL_BASE . "/file/" . $question->getAttachedFileAnswer()) . ',';
            }

            $answer = Video::getVideo($asker->getVideoTeamIds()[0] == $team->getId() ? Reason::ANSWER1 : Reason::ANSWER2,
                $asker, Video::ACCEPTED);
            $csv .= $answer == null ? "" : $answer->getLink();
            $csv .= ($i == 0 ? "," : "\n");
        }
    }
    file_put_contents($file_name, $csv, FILE_APPEND);

    return $file_name;
}

function displayVideo($link)
{
	if (preg_match("#(https?://|)(www\.|)(youtube\.com/watch\?v=|youtu.be/)(.*)#", $link, $matches)) {
		$code = $matches[4];
        /** @noinspection HtmlDeprecatedAttribute */
        /** @noinspection HtmlDeprecatedTag */
        echo "<center><iframe width=\"854px\" height=\"480px\" src=\"https://www.youtube.com/embed/$code\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen></iframe></center><br />\n";
	}
	elseif (preg_match("#(https?://|)(www\.|)vimeo\.com/([0-9]*)#", $link, $matches)) {
		$code = $matches[3];
        /** @noinspection HtmlDeprecatedAttribute */
        /** @noinspection HtmlDeprecatedTag */
        echo "<center><iframe src=\"https://player.vimeo.com/video/$code?color=3be6c3\" width=\"853\" height=\"480\" frameborder=\"0\" allow=\"autoplay; fullscreen\" allowfullscreen></iframe></center>";

	}
	elseif (preg_match("#(https?://|)(www\.|)dailymotion\.com/video/(.*)#", $link, $matches)) {
		$code = $matches[3];
        /** @noinspection HtmlDeprecatedAttribute */
        /** @noinspection HtmlDeprecatedTag */
		echo "<center><iframe frameborder=\"0\" width=\"853\" height=\"480\" src=\"https://www.dailymotion.com/embed/video/$code\" allowfullscreen allow=\"autoplay\"></iframe></center>";
	}
}