Add context creation methods and refactor code

Implemented new static methods in the Context class to create default, user, and admin contexts. Refactored the Core class to simplify checks for the existence of the itemsOrder attribute. Made changes in the AbstractItem class to change typing for array offset access methods and improve code readability.

Signed-off-by: B24io <app@b24.io>

src/Core/Core.php

@@ -47,8 +47,8 @@ public function call(Command $cmd): Response
                 'apiMethod' => $cmd->apiMethod,
                 'parameters' => $cmd->parameters,
                 'order' => [
-                    'orderBy' => $cmd->itemsOrder?->orderBy,
-                    'direction' => $cmd->itemsOrder?->direction,
+                    'orderBy' => $cmd->itemsOrder !== null ? $cmd->itemsOrder->orderBy : null,
+                    'direction' => $cmd->itemsOrder !== null ? $cmd->itemsOrder->direction : null,
                 ],
             ]
         );
@@ -76,7 +76,7 @@ public function call(Command $cmd): Response
                     //todo check with empty response size from server
                     $response = new Response($apiCallResponse,
                         new Command(
-                            Context::admin,
+                            Context::admin(),
                             $cmd->httpMethod,
                             $cmd->apiMethod,
                             $cmd->parameters

src/Core/Credentials/Context.php

@@ -29,6 +29,21 @@ public function __construct(string $value)
         $this->value = $value;
     }
 
+    public static function default(): self
+    {
+        return new self(self::default);
+    }
+
+    public static function user(): self
+    {
+        return new self(self::user);
+    }
+
+    public static function admin(): self
+    {
+        return new self(self::admin);
+    }
+
     public function isDefault(): bool
     {
         return $this->value === self::default;

src/Core/Result/AbstractItem.php

@@ -35,7 +35,10 @@ public function __construct(array $data)
         $this->decimalMoneyParser = new DecimalMoneyParser(new ISOCurrencies());
     }
 
-    public function __isset(int|string $offset): bool
+    /**
+     * @param int|string $offset
+     */
+    public function __isset($offset): bool
     {
         return isset($this->data[$offset]);
     }
@@ -46,7 +49,7 @@ public function __isset(int|string $offset): bool
      * @return mixed
      * @throws Exception
      */
-    public function __get(int|string $offset)
+    public function __get($offset)
     {
         switch ($offset) {
             case 'id':
@@ -76,7 +79,7 @@ public function __get(int|string $offset)
      * @throws ImmutableResultViolationException
      *
      */
-    public function __set(int|string $offset, mixed $value)
+    public function __set($offset, $value)
     {
         throw new ImmutableResultViolationException(sprintf('Result is immutable, violation at offset %s', $offset));
     }
@@ -86,7 +89,7 @@ public function __set(int|string $offset, mixed $value)
      *
      * @throws ImmutableResultViolationException
      */
-    public function __unset(int|string $offset)
+    public function __unset($offset)
     {
         throw new ImmutableResultViolationException(sprintf('Result is immutable, violation at offset %s', $offset));
     }