Add aggregateWindow() function to Query Builder

Signed-off-by: davidarendsen <davidarendsen@hey.com>

src/Functions/AggregateWindow.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace Arendsen\FluxQueryBuilder\Functions;
+
+use Arendsen\FluxQueryBuilder\Type;
+use Arendsen\FluxQueryBuilder\Type\ArrayType;
+use Arendsen\FluxQueryBuilder\Type\DurationType;
+use Arendsen\FluxQueryBuilder\Type\FnType;
+
+class AggregateWindow extends Base
+{
+    /**
+     * @var string $every
+     */
+    private $every;
+
+    /**
+     * @var string|null $period
+     */
+    private $period;
+
+    /**
+     * @var string|null $offset
+     */
+    private $offset;
+
+    /**
+     * @var string|null $location
+     */
+    private $location;
+
+    /**
+     * @var string|null $column
+     */
+    private $column;
+
+    /**
+     * @var string|null $timeSrc
+     */
+    private $timeSrc;
+
+    /**
+     * @var string|null $timeDst
+     */
+    private $timeDst;
+
+    /**
+     * @var bool $createEmpty
+     */
+    private $createEmpty;
+
+    public function __construct(
+        $every,
+        ?string $period = null,
+        ?string $offset = null,
+        $fn,
+        ?string $location = null,
+        ?string $column = null,
+        ?string $timeSrc = null,
+        ?string $timeDst = null,
+        bool $createEmpty = true
+    ) {
+        $this->every = $every;
+        $this->period = $period;
+        $this->offset = $offset;
+        $this->fn = $fn;
+        $this->location = $location;
+        $this->column = $column;
+        $this->timeSrc = $timeSrc;
+        $this->timeDst = $timeDst;
+        $this->createEmpty = $createEmpty;
+    }
+
+    public function __toString()
+    {
+        $input = new ArrayType(array_filter([
+            'every' => new DurationType($this->every),
+            'period' => $this->period ? new DurationType($this->period) : null,
+            'offset' => $this->offset ? new DurationType($this->offset) : null,
+            'fn' => new FnType($this->fn),
+            'location' => $this->location ? new Type($this->location) : null,
+            'column' => $this->column ? new Type($this->column) : null,
+            'timeSrc' => $this->timeSrc ? new Type($this->timeSrc) : null,
+            'timeDst' => $this->timeDst ? new Type($this->timeDst) : null,
+            'createEmpty' => !$this->createEmpty ? new Type($this->createEmpty) : null,
+        ]));
+        return '|> aggregateWindow(' . $input . ') ';
+    }
+}