92 lines
1.8 KiB
PHP
92 lines
1.8 KiB
PHP
<?php
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class Document
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{
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private $file_id;
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private $user_id;
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private $team_id;
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private $problem;
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private $uploaded_at;
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private $version;
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private function __construct() {}
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public static function fromId($id)
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{
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global $DB;
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$req = $DB->prepare("SELECT * FROM `documents` WHERE `file_id` = ?;");
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$req->execute([htmlspecialchars($id)]);
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$data = $req->fetch();
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if ($data === false)
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return null;
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return self::fromData($data);
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}
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public static function fromData($data)
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{
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$doc = new Document();
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$doc->fill($data);
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return $doc;
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}
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private function fill($data)
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{
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$this->file_id = $data["file_id"];
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$this->user_id = $data["user"];
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$this->team_id = $data["team"];
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$this->problem = $data["problem"];
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$this->uploaded_at = $data["uploaded_at"];
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$this->version = isset($data["version"]) ? $data["version"] : 1;
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}
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public function getFileId()
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{
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return $this->file_id;
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}
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public function getUserId()
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{
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return $this->user_id;
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}
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public function getTeamId()
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{
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return $this->team_id;
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}
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public function getProblem()
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{
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return $this->problem;
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}
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public function getUploadedAt()
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{
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return $this->uploaded_at;
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}
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public function getVersion()
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{
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return $this->version;
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}
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public static function getAllDocuments($problem, $team_id = -1)
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{
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global $DB;
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$req = $DB->query("SELECT * FROM `documents` AS `t1` "
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. "INNER JOIN (SELECT `user`, `problem`, MAX(`uploaded_at`) AS `last_upload`, COUNT(`team`) AS `version` FROM `documents` GROUP BY `problem`, `user`) `t2` "
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. "ON `t1`.`user` = `t2`.`user` AND `t1`.`problem` = `t2`.`problem` "
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. "WHERE `t1`.`uploaded_at` = `t2`.`last_upload` AND `t1`.`problem` = $problem " . ($team_id >= 0 ? "AND `team` = $team_id" : "") . " ORDER BY `t1`.`user`;");
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$docs = [];
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while (($data = $req->fetch()) !== false)
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$docs[] = Document::fromData($data);
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return $docs;
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}
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}
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