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-rw-r--r--database/Database.php87
1 files changed, 0 insertions, 87 deletions
diff --git a/database/Database.php b/database/Database.php
deleted file mode 100644
index 51e1430..0000000
--- a/database/Database.php
+++ /dev/null
@@ -1,87 +0,0 @@
-<?php
-header('Content-type: text/plain; charset=utf-8');
-/**
- * User: Marvin Borner
- * Date: 16/09/2018
- * Time: 21:34
- */
-
-class Database
-{
- public static function getFromQueue($sort): string
- {
- print "\t\e[96mStarting at " . ($sort === 'DESC' ? 'bottom' : 'top') . " of queue\n";
- $conn = self::initDbConnection();
- $checkStmt = $conn->query('SELECT url FROM queue ORDER BY id ' . $sort . ' LIMIT 1');
-
- return $checkStmt->fetchAll(PDO::FETCH_ASSOC)[0]['url'] ?? '';
- }
-
- public static function insertIntoQueue($urls)
- {
- foreach ($urls as $url) {
- if (self::alreadyCrawled($url)) {
- print "\t\e[91mUrl already queued " . $url . "\n";
- } else {
- print "\t\e[92mQueueing url " . $url . "\n";
- $conn = self::initDbConnection();
- $hash = md5($url);
- $stmt = $conn->prepare('INSERT IGNORE INTO queue (url, hash) VALUES (:url, :hash)');
- $stmt->execute([':url' => $url, 'hash' => $hash]);
- }
- }
- }
-
- public static function removeFromQueue($url)
- {
- $hash = md5($url);
- $conn = self::initDbConnection();
- $checkStmt = $conn->prepare('DELETE FROM queue WHERE hash = :hash');
- $checkStmt->execute([':hash' => $hash]);
- }
-
- public static function alreadyCrawled($url): bool
- {
- print "\t\e[96mChecking if url has already been crawled " . $url . "\n";
- $hash = md5($url);
- $conn = self::initDbConnection();
- $checkStmt = $conn->prepare('(SELECT null FROM url_data WHERE hash = :hash) UNION (SELECT null FROM error_url WHERE hash = :hash)');
- $checkStmt->execute([':hash' => $hash]);
- $alreadyCrawled = $checkStmt->rowCount() !== 0;
- if ($alreadyCrawled) {
- print "\t\e[91mUrl already crawled " . $url . "\n";
- }
- return $alreadyCrawled; // return true if already crawled
- }
-
- public static function urlHasError($url)
- {
- $hash = md5($url);
- $conn = self::initDbConnection();
- $checkStmt = $conn->prepare('INSERT IGNORE INTO error_url (url, hash) VALUES (:url, :hash)');
- $checkStmt->execute([':url' => $url, 'hash' => $hash]);
- }
-
- public static function saveUrlData($url, $data)
- {
- $conn = self::initDbConnection();
- $stmt = $conn->prepare('INSERT IGNORE INTO url_data (url, title, description, lang, hash) VALUES (:url, :title, :description, :lang, :hash)');
- $stmt->execute([':url' => $url, ':title' => $data['title'] ?? '', ':description' => $data['description'] ?? '', ':lang' => $data['lang'] ?? 'en', ':hash' => md5($url)]);
- }
-
- public static function getUrlData($query)
- {
- $conn = self::initDbConnection();
- $checkStmt = $conn->prepare('SELECT url, title, description, lang FROM url_data WHERE title LIKE :query OR description LIKE :query');
- $checkStmt->execute([':query' => '%' . $query . '%']);
- return $checkStmt->fetchAll(PDO::FETCH_ASSOC);
- }
-
- private static function initDbConnection(): PDO
- {
- global $servername, $dbname, $username, $password;
- $conn = new PDO("mysql:host=$servername;dbname=$dbname;charset=utf8", $username, $password);
- $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
- return $conn;
- }
-} \ No newline at end of file