Filter refactoring

app/Filter/BaseFilter.php

@@ -0,0 +1,119 @@
+<?php
+
+namespace Kanboard\Filter;
+
+use PicoDb\Table;
+
+/**
+ * Base filter class
+ *
+ * @package filter
+ * @author  Frederic Guillot
+ */
+abstract class BaseFilter
+{
+    /**
+     * @var Table
+     */
+    protected $query;
+
+    /**
+     * @var mixed
+     */
+    protected $value;
+
+    /**
+     * BaseFilter constructor
+     *
+     * @access public
+     * @param  mixed $value
+     */
+    public function __construct($value = null)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * Get object instance
+     *
+     * @static
+     * @access public
+     * @param  mixed $value
+     * @return static
+     */
+    public static function getInstance($value = null)
+    {
+        $self = new static($value);
+        return $self;
+    }
+
+    /**
+     * Set query
+     *
+     * @access public
+     * @param  Table $query
+     * @return \Kanboard\Core\Filter\FilterInterface
+     */
+    public function withQuery(Table $query)
+    {
+        $this->query = $query;
+        return $this;
+    }
+
+    /**
+     * Set the value
+     *
+     * @access public
+     * @param  string $value
+     * @return \Kanboard\Core\Filter\FilterInterface
+     */
+    public function withValue($value)
+    {
+        $this->value = $value;
+        return $this;
+    }
+
+    /**
+     * Parse operator in the input string
+     *
+     * @access protected
+     * @return string
+     */
+    protected function parseOperator()
+    {
+        $operators = array(
+            '<=' => 'lte',
+            '>=' => 'gte',
+            '<' => 'lt',
+            '>' => 'gt',
+        );
+
+        foreach ($operators as $operator => $method) {
+            if (strpos($this->value, $operator) === 0) {
+                $this->value = substr($this->value, strlen($operator));
+                return $method;
+            }
+        }
+
+        return '';
+    }
+
+    /**
+     * Apply a date filter
+     *
+     * @access protected
+     * @param  string $field
+     */
+    protected function applyDateFilter($field)
+    {
+        $timestamp = strtotime($this->value);
+        $method = $this->parseOperator();
+
+        if ($method !== '') {
+            $this->query->$method($field, $timestamp);
+        } else {
+            $this->query->gte($field, $timestamp);
+            $this->query->lte($field, $timestamp + 86399);
+        }
+    }
+}