Update -> refactor and optimize UI , code ,...

app/models/Paste.php

@@ -1,62 +1,58 @@
 <?php
-require_once __DIR__ . '/../core/db.php';
-require_once __DIR__ . '/../core/redis.php';
 
+require_once __DIR__ . '/../core/redis.php';
 
 class Paste
 {
-    private $pdo;
-    public function __construct($pdo)
+    private PDO $pdo;
+
+    public function __construct(PDO $pdo)
     {
         $this->pdo = $pdo;
     }
 
-    public function save($id, $encrypted_text, $iv, $expire_time, $password_hash)
-    {
-        if ($expire_time === null) {
-            $stmt = $this->pdo->prepare("INSERT INTO pastes(id, encrypted_text, iv, expire_time, password_hash)
-                                     VALUES (?, ?, ?, NULL, ?)");
-            return $stmt->execute([$id, $encrypted_text, $iv, $password_hash]);
+    public function save(
+        string  $id,
+        string  $encrypted_text,
+        string  $iv,
+        ?int    $expire_time,
+        ?string $password_hash
+    ): bool {
+        if ($expire_time !== null) {
+            $ttl = max(1, $expire_time - time());
+            $redis = redisClient();
+            $redis->setex("paste:{$id}", $ttl, json_encode([
+                'encrypted_text' => $encrypted_text,
+                'iv'             => $iv,
+                'password_hash'  => $password_hash,
+            ]));
+            return true;
         }
 
-        $redis = redisClient();
-
-        $expire_time = (int)$expire_time;
-        $ttl = max(1, $expire_time - time());
-
-
-        $redis->setex(
-            "paste:$id",
-            $ttl,
-            json_encode([
-                'encrypted_text' => $encrypted_text,
-                'iv' => $iv,
-                'password_hash' => $password_hash
-            ])
+        $stmt = $this->pdo->prepare(
+            'INSERT INTO pastes (id, encrypted_text, iv, expire_time, password_hash)
+             VALUES (?, ?, ?, NULL, ?)'
         );
-
-
-        return true;
+        return $stmt->execute([$id, $encrypted_text, $iv, $password_hash]);
     }
 
-
-    public function get($id)
+    public function get(string $id): array|false
     {
         $redis = redisClient();
+        $raw   = $redis->get("paste:{$id}");
 
-        $data = $redis->get("paste:$id");
-        if ($data !== false) {
-            $json = json_decode($data, true);
+        if ($raw !== false) {
+            $json = json_decode($raw, true);
             return [
                 'encrypted_text' => $json['encrypted_text'],
-                'iv' => $json['iv'],
-                'password_hash' => $json['password_hash'],
-                'expire_time' => time() + $redis->ttl("paste:$id")
+                'iv'             => $json['iv'],
+                'password_hash'  => $json['password_hash'],
+                'expire_time'    => time() + $redis->ttl("paste:{$id}"),
             ];
         }
 
-        $stmt = $this->pdo->prepare("SELECT * FROM pastes WHERE id = ?");
+        $stmt = $this->pdo->prepare('SELECT * FROM pastes WHERE id = ? LIMIT 1');
         $stmt->execute([$id]);
-        return $stmt->fetch(PDO::FETCH_ASSOC);
+        return $stmt->fetch();
     }
 }