<?php

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

	if (isset($_SESSION["user_id"])) {
		$user = $_SESSION["user"] = User::fromId($_SESSION["user_id"]);
		$_SESSION["role"] = $user->getRole();

		if ($user->getTeamId() !== null)
			$_SESSION["team"] = Team::fromId($user->getTeamId());

		if (isset($_GET["be-admin"])) {
			quitTeam();
			$user->setRole(Role::ADMIN);
			exit();
		}

		if (isset($_GET["be-organizer"])) {
			quitTeam();
			$user->setRole(Role::ORGANIZER);
			exit();
		}

		if (isset($_GET["be-participant"])) {
			quitTeam();
			$user->setRole(Role::PARTICIPANT);
			exit();
		}

		if (isset($_GET["be-encadrant"])) {
			quitTeam();
			$user->setRole(Role::ENCADRANT);
			exit();
		}
	}
}

function quitTeam()
{
	global $DB, $URL_BASE;

	header("Location: $URL_BASE");

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

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

	for ($i = 1; $i <= ($role == Role::ENCADRANT ? 2 : 6); ++$i)
		/** @noinspection SqlResolve */
		$DB->exec("UPDATE `teams` SET `" . strtolower(Role::getName($role)) . "_$i` = NULL WHERE `" . strtolower(Role::getName($role)) . "_$i` = $user_id;");
	$user->setTeamId(null);
	$DB->exec("UPDATE `teams` SET `encadrant_1` = `encadrant_2`, `encadrant_2` = NULL WHERE `encadrant_1` IS NULL;");
	for ($i = 1; $i <= 5; ++$i) {
		/** @noinspection SqlResolve */
		$DB->exec("UPDATE `teams` SET `participant_$i` = `participant_" . strval($i + 1) . "`, `participant_" . strval($i + 1) . "` = NULL WHERE `participant_$i` 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;");

	if ($DB->exec("DELETE FROM `teams` WHERE `encadrant_1` IS NULL AND `participant_1` IS NULL;") > 0) {
		$team_id = $user->getTeamId();
		$req = $DB->query("SELECT `file_id` FROM `solutions` WHERE `team` = $team_id;");
		while (($data = $req->fetch()) !== false)
			unlink("$URL_BASE/files/" . $data["file_id"]);
		$DB->exec("DELETE FROM `solutions` WHERE `team` = $team_id;");

		$req = $DB->query("SELECT `file_id` FROM `syntheses` WHERE `team` = $team_id;");
		while (($data = $req->fetch()) !== false)
			unlink("$URL_BASE/files/" . $data["file_id"]);
		$DB->exec("DELETE FROM `syntheses` WHERE `team` = $team_id;");
	}

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

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 tournamentExists($name)
{
	global $DB, $YEAR;

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

function canValidate(Team $team, Tournament $tournament)
{
	global $DB, $YEAR;

	$can_validate = $team->getValidationStatus() == ValidationStatus::NOT_READY;
	$can_validate &= $team->getEncadrants()[0] != NULL;
	$can_validate &= $team->getParticipants()[3] != NULL;
	for ($i = 1; $i <= 2; ++$i) {
		if ($team->getEncadrants()[$i - 1] === NULL)
			continue;

		$req = $DB->prepare("SELECT COUNT(*) AS `version` FROM `documents` WHERE `user` = ? AND `tournament` = ? AND `type` = ?;");
		$req->execute([$team->getEncadrants()[$i - 1], $tournament->getId(), "PHOTO_CONSENT"]);
		$d = $req->fetch();
		$can_validate &= $d["version"] > 0;

		$req = $DB->prepare("SELECT COUNT(*) AS `version` FROM `documents` WHERE `user` = ? AND `tournament` = ? AND `type` = ?;");
		$req->execute([$team->getEncadrants()[$i - 1], $tournament->getId(), "SANITARY_PLUG"]);
		$d = $req->fetch();
		$can_validate &= $d["version"] > 0;
	}
	for ($i = 1; $i <= 6; ++$i) {
		if ($team->getParticipants()[$i] === NULL)
			continue;

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

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

		$birth_date = $DB->query("SELECT `birth_date` FROM `users` WHERE `id` = " . $team->getParticipants()[$i] . ";")->fetch()["birth_date"];
		if ($birth_date > strval($YEAR - 18) . substr($tournament->getStartDate(), 4)) {
			$req = $DB->prepare("SELECT COUNT(*) AS `version` FROM `documents` WHERE `user` = ? AND `tournament` = ? AND `type` = ?;");
			$req->execute([$team->getParticipants()[$i], $tournament->getId(), "PARENTAL_CONSENT"]);
			$d = $req->fetch();
			$can_validate &= $d["version"] > 0;
		}
	}

	return $can_validate;
}

function printDocuments($documents)
{
	global $URL_BASE;

	foreach ($documents as $document) {
		$file_id = $document->getFileId();
		$user = User::fromId($document->getUserId());
		$surname = $user->getSurname();
		$first_name = $user->getFirstName();
		$name = DocumentType::getTranslatedName($document->getType());
		$version = $document->getVersion();
		echo "$name de $first_name $surname (version $version) : <a href=\"$URL_BASE/file/$file_id\">Télécharger</a><br />";
	}
}

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

	$tournament = Tournament::fromId($tournament_id);

	$zip = new ZipArchive();

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

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

	switch ($document_type) {
		case DocumentType::SOLUTION:
			$data = $tournament->getAllSolutions($team_id);
			break;
		case DocumentType::SYNTHESIS:
			$data = $tournament->getAllSyntheses($team_id);
			break;
		default:
			$data = $tournament->getAllDocuments($team_id);
			break;
	}

	/** @var Document | Solution | Synthesis $file */
	foreach ($data as $file) {
		$file_id = $file->getFileId();
		$team = Team::fromId($file->getTeamId());
		switch ($document_type) {
			case DocumentType::SOLUTION:
				$name = "Problème " . $file->getProblem() . " " . $team->getTrigram() . ".pdf";
				break;
			case DocumentType::SYNTHESIS:
				$name = "Note de synthèse " . $team->getTrigram() . " pour " . ($file->getDest() == DestType::OPPOSANT ? "l'opposant" : "le rapporteur") . ".pdf";
				break;
			default:
				$user = User::fromId($file->getUserId());
				switch ($file->getType()) {
					case DocumentType::PARENTAL_CONSENT:
						$name = "Autorisation parentale de " . $user->getFirstName() . " " . $user->getSurname() . ".pdf";
						break;
					case DocumentType::PHOTO_CONSENT:
						$name = "Autorisation de droit à l'image de " . $user->getFirstName() . " " . $user->getSurname() . ".pdf";
						break;
					default:
						$name = "Fiche sanitaire de " . $user->getFirstName() . " " . $user->getSurname() . ".pdf";
						break;
				}
				break;
		}

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

	$zip->close();

	return $file_name;
}