Expanded reports.

app/lib/FireflyIII/Report/ReportHelperInterface.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace FireflyIII\Report;
+
+use Illuminate\Support\Collection;
+
+/**
+ * Interface ReportHelperInterface
+ *
+ * @package FireflyIII\Report
+ */
+interface ReportHelperInterface
+{
+
+    /**
+     * Only return the top X entries, group the rest by amount
+     * and described as 'Others'. id = 0 as well
+     *
+     * @param array $array
+     * @param int   $limit
+     *
+     * @return array
+     */
+    public function limitArray(array $array, $limit = 10);
+
+    /**
+     * Turns a collection into an array. Needs the field 'id' for the key,
+     * and saves 'name', 'amount','spent' (if present) as a subarray.
+     *
+     * @param Collection $collection
+     *
+     * @return array
+     */
+    public function makeArray(Collection $collection);
+
+    /**
+     * Merges two of the arrays as defined above. Can't handle more (yet)
+     *
+     * @param array $one
+     * @param array $two
+     *
+     * @return array
+     */
+    public function mergeArrays(array $one, array $two);
+
+    /**
+     * Sort an array where all 'amount' keys are negative floats.
+     *
+     * @param array $array
+     *
+     * @return array
+     */
+    public function sortNegativeArray(array $array);
+
+}