OOP Counter

2024-07-12 12:12:31 +02:00
parent 6bb19ad6b0
commit 49a65d4d1a
28 changed files with 297 additions and 89 deletions
@@ -0,0 +1,180 @@
+<?php
+require_once dirname(__FILE__) . "/../../../../base/database.php";
+
+class Counter
+{
+  /*
+  * Private members
+  */
+
+  private PDO $db;
+  private string $siteID;
+
+  /*
+  * Constructor
+  */
+
+  public function __construct(string $siteID = null)
+  {
+    $this->db = DB::openConnection();
+
+    if (empty($siteID)) {
+      $this->siteID = substr($_SERVER["REQUEST_URI"], strlen($_SERVER["REQUEST_URI"]) - 256);
+    } else {
+      $this->siteID = $siteID;
+    }
+  }
+
+  /*
+  * Render Component
+  */
+
+  public function render()
+  {
+    $this->cleanupIPs();
+    $hasVisited = $this->hasVisited();
+    if (!$hasVisited) {
+      $this->addHit();
+      $this->addIp();
+    }
+
+    $ret =
+      <<<EOT
+    <style>
+      .span-v3Yq3 {
+        display: inline-block;
+        padding: 6px 6px 4px;
+        border-radius: 3px;
+        background: #cccccc;
+        margin-right: -2px;
+      }
+
+      .center-v3Yq3 {
+        display: flex;
+        justify-content: center;
+        gap: 5px;
+        width: 50%;
+        margin: 20px auto;
+      }
+
+      .message-v3Yq3 {
+        color: #aaaaaa;
+        font-size: 12px;
+        text-align: center;
+      }
+    </style>
+    <div>
+      <div class="center-v3Yq3">
+    EOT;
+    foreach (mb_str_split(($this->getHits()) . "") as $digit) {
+      $ret .=
+        <<<EOT
+      <span class="span-v3Yq3">$digit</span>
+      EOT;
+    }
+    $ret .=
+      <<<EOT
+      </div>
+      <div class="center-v3Yq3 message-v3Yq3">
+        Have visited this site.
+      EOT;
+    if (!$hasVisited) {
+      $ret .=
+        <<<EOT
+        <br />
+        This is your first visit tody
+        EOT;
+    }
+    $ret .=
+      <<<EOT
+      </div>
+    </div>
+    EOT;
+
+    echo $ret;
+  }
+
+  /*
+  * Implementation
+  */
+
+  private function getHits()
+  {
+    $query = "
+      SELECT
+        hits
+      FROM
+        Counter
+      WHERE
+        siteID LIKE :SID";
+
+    $stmt = $this->db->prepare($query);
+    $stmt->bindValue(":SID", $this->siteID);
+    $stmt->execute();
+    $hits = $stmt->fetch(PDO::FETCH_COLUMN);
+    return $hits !== false ? $hits : 0;
+  }
+
+  private function addHit()
+  {
+    $query = "
+      INSERT INTO
+        Counter(siteID, hits)
+      VALUES
+        (:SID, 1)
+      ON DUPLICATE KEY UPDATE
+        hits = hits + 1";
+
+    $stmt = $this->db->prepare($query);
+    $stmt->bindValue(":SID", $this->siteID);
+    $stmt->execute();
+  }
+
+  private function addIP()
+  {
+    $query = "
+      INSERT INTO
+        CounterIP(siteID, ip, timestamp)
+      VALUES
+        (:SID, :IP, NOW())";
+
+    $stmt = $this->db->prepare($query);
+    $stmt->bindValue(":SID", $this->siteID);
+    $stmt->bindValue(":IP", $_SERVER['REMOTE_ADDR']);
+    $stmt->execute();
+  }
+
+  private function cleanupIPs()
+  {
+    $query = "
+      DELETE FROM
+        CounterIP
+      WHERE
+        TIMESTAMPDIFF(MINUTE, timestamp, NOW()) > 1";
+
+    $stmt = $this->db->prepare($query);
+    $stmt->execute();
+  }
+
+  private function hasVisited()
+  {
+    $query = "
+      SELECT
+        COUNT(*)
+      FROM
+        CounterIP
+      WHERE
+          siteID = :SID
+        AND
+          ip = :IP
+        AND
+          TIMESTAMPDIFF(MINUTE, timestamp, NOW()) <= 1";
+
+    $stmt = $this->db->prepare($query);
+    $stmt->bindValue(":SID", $this->siteID);
+    $stmt->bindValue(":IP", $_SERVER['REMOTE_ADDR']);
+    $stmt->execute();
+    $cnt = $stmt->fetch(PDO::FETCH_COLUMN);
+    return $cnt > 0;
+  }
+}