Change signature of Collection

- Removed method query()
- Method get replaces query()

src/Collection.php

@@ -96,33 +96,54 @@ class Collection implements CollectionInterface, IteratorAggregate, Countable
     }
 
     /**
-     * Return item with given key
+     * Return item at given position starting at 0
      *
      * @param  integer $key
      * @return mixed
      */
-    public function get(int $key = 0, $default = null)
+    public function getAtPosition(int $key = 0, $default = null)
     {
-        if (! array_key_exists($key, $this->items)) {
+        if ($this->count() == 0) {
             return $default;
         }
 
-        return $this->items[$key];
+        $positions = array_values($this->items);
-    }
+        if (! array_key_exists($key, $positions)) {
-
-    public function has(int $key): bool
-    {
-        return array_key_exists($key, $this->items);
-    }
-
-    public function query(string $query, $default = null)
-    {
-        $items = $this->getItemsFlat();
-        if (!array_key_exists($query, $items)) {
             return $default;
         }
 
-        return $items[$query];
+        return $positions[$key];
+    }
+
+    public function get(int|string $query, $default = null)
+    {
+        if ($this->count() == 0) {
+            return $default;
+        }
+
+        if (is_int($query) && array_key_exists($query, $this->items)) {
+            return $this->items[$query];
+        }
+
+        if (is_string($query) && strpos($query, '.') === false) {
+            return array_key_exists($query, $this->items) ? $this->items[$query] : $default;
+        }
+
+        $query = explode('.', $query);
+
+        $result = $default;
+        $items = $this->items;
+        foreach ($query as $key) {
+            if (!is_array($items) || !array_key_exists($key, $items)) {
+                $result = $default;
+                break;
+            }
+
+            $result = $items[$key];
+            $items = $result;
+        }
+
+        return $result;
     }
 
     public function map(callable $callback): self

src/Interfaces/CollectionInterface.php

@@ -7,8 +7,7 @@ use Traversable;
 interface CollectionInterface extends Traversable
 {
     public function push($item): CollectionInterface;
-    public function get(int $key, $default = null);
+    public function get(int|string $key, $default = null);
-    public function has(int $key);
     public function first();
     public function last();
     public function count(): int;

tests/CollectionTest.php

@@ -86,24 +86,6 @@ class CollectionTest extends TestCase
         $this->assertEquals('BAZ', $collection->get(2));
     }
 
-    public function testGet()
-    {
-        $collection = new Collection(['foo', 'bar', 'baz']);
-        $this->assertEquals('foo', $collection->get(0));
-        $this->assertEquals('bar', $collection->get(1));
-        $this->assertEquals('baz', $collection->get(2));
-        $this->assertNull($collection->get(3));
-        $this->assertEquals('test', $collection->get(3, 'test'));
-    }
-
-    public function testHas(): void
-    {
-        $collection = new Collection(['foo', 'bar']);
-        $this->assertTrue($collection->has(0));
-        $this->assertTrue($collection->has(1));
-        $this->assertFalse($collection->has(2));
-    }
-
     public function testToArray()
     {
         $collection = new Collection(['foo', 'bar', 'baz']);
@@ -122,11 +104,14 @@ class CollectionTest extends TestCase
         $this->assertEquals(['foo', 'bar', 'baz'], $mapped->toArray());
     }
 
-    public function testQuery(): void
+    public function testGet(): void
     {
         $collection = new Collection([
-            'foo' => 'FOO',
+            'first',
-            'bar' => 'BAR',
+            'second',
+            ['testx' => 'x'],
+            'foo' => 'foo_value',
+            'bar' => 'bar_value',
             'baz' => [
                 'test1' => '1',
                 'test2' => '2',
@@ -136,12 +121,18 @@ class CollectionTest extends TestCase
             ]
         ]);
 
-        $this->assertEquals('FOO', $collection->query('foo'));
+        $this->assertEquals('first', $collection->get(0));
-        $this->assertEquals('BAR', $collection->query('bar'));
+        $this->assertEquals('second', $collection->get(1));
-        $this->assertEquals('1', $collection->query('baz.test1'));
+        $this->assertEquals('first', $collection->get('0'));
-        $this->assertEquals('2', $collection->query('baz.test2'));
+        $this->assertEquals('second', $collection->get('1'));
-        $this->assertEquals('value', $collection->query('baz.test3.example'));
+        $this->assertEquals('x', $collection->get('2.testx'));
-        $this->assertEquals('value', $collection->query('baz.test3.example', 'default'));
+        $this->assertEquals('foo_value', $collection->get('foo'));
-        $this->assertEquals('default', $collection->query('baz.test3.no', 'default'));
+        $this->assertEquals('bar_value', $collection->get('bar'));
+        $this->assertEquals('1', $collection->get('baz.test1'));
+        $this->assertEquals('2', $collection->get('baz.test2'));
+        $this->assertEquals('value', $collection->get('baz.test3.example'));
+        $this->assertEquals('value', $collection->get('baz.test3.example', 'default'));
+        $this->assertEquals('default', $collection->get('baz.test3.no', 'default'));
+        $this->assertEquals(['example' => 'value'], $collection->get('baz.test3'));
     }
 }