initial commit

Calculator/CalculatorInterface.php

@@ -0,0 +1,22 @@
+<?php
+/*
+ * 
+ */
+namespace Chill\AMLI\BudgetBundle\Calculator;
+
+use Chill\AMLI\BudgetBundle\Entity\AbstractElement;
+
+/**
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+interface CalculatorInterface
+{
+    /**
+     * 
+     * @param AbstractElement[] $elements
+     */
+    public function calculate(array $elements) : ?CalculatorResult;
+    
+    public function getAlias();
+}

Calculator/CalculatorManager.php

@@ -0,0 +1,67 @@
+<?php
+/*
+ * 
+ */
+namespace Chill\AMLI\BudgetBundle\Calculator;
+
+use Chill\AMLI\BudgetBundle\Entity\AbstractElement;
+/**
+ * 
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+class CalculatorManager
+{
+    /**
+     *
+     * @var CalculatorInterface[]
+     */
+    protected $calculators = [];
+    
+    protected $defaultCalculator = [];
+    
+    public function addCalculator(CalculatorInterface $calculator, bool $default)
+    {
+        $this->calculators[$calculator::getAlias()] = $calculator;
+        
+        if ($default) {
+            $this->defaultCalculator[] = $calculator::getAlias();
+        }
+    }
+    
+    /**
+     * 
+     * @param string $alias
+     * @return CalculatorInterface
+     */
+    public function getCalculator($alias)
+    {
+        if (FALSE === \array_key_exists($alias, $this->calculators)) {
+            throw new \OutOfBoundsException("The calculator with alias '$alias' does "
+                . "not exists. Possible values are ". \implode(", ", \array_keys($this->calculators)));
+        }
+        
+        return $this->calculators[$alias];
+    }
+    
+    /**
+     * 
+     * @param AbstractElement[] $elements
+     * @return CalculatorResult[]
+     */
+    public function calculateDefault(array $elements)
+    {
+        $results = [];
+        
+        foreach ($this->defaultCalculator as $alias) {
+            $calculator = $this->calculators[$alias];
+            $result = $calculator->calculate($elements);
+            
+            if ($result !== null) {
+                $results[$calculator::getAlias()] = $result;
+            }
+        }
+        
+        return $results;
+    }
+}

Calculator/CalculatorResult.php

@@ -0,0 +1,23 @@
+<?php
+/*
+ * 
+ */
+namespace Chill\AMLI\BudgetBundle\Calculator;
+
+/**
+ * 
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ */
+class CalculatorResult
+{
+    const TYPE_RATE = 'rate';
+    const TYPE_CURRENCY = 'currency';
+    const TYPE_PERCENTAGE = 'percentage';
+    
+    public $type;
+    
+    public $result;
+    
+    public $label;
+}