Improve code quality in budget methods.

app/Repositories/Budget/BudgetRepositoryInterface.php

@@ -46,13 +46,6 @@ interface BudgetRepositoryInterface
      */
     public function budgetedPerDay(Budget $budget): string;
 
-    /**
-     * Destroy a budget limit.
-     *
-     * @param BudgetLimit $budgetLimit
-     */
-    public function destroyBudgetLimit(BudgetLimit $budgetLimit): void;
-
     /**
      * @return bool
      */
@@ -89,6 +82,13 @@ interface BudgetRepositoryInterface
      */
     public function destroyAvailableBudget(AvailableBudget $availableBudget): void;
 
+    /**
+     * Destroy a budget limit.
+     *
+     * @param BudgetLimit $budgetLimit
+     */
+    public function destroyBudgetLimit(BudgetLimit $budgetLimit): void;
+
     /**
      * Filters entries from the result set generated by getBudgetPeriodReport.
      *
@@ -166,6 +166,17 @@ interface BudgetRepositoryInterface
      */
     public function getAvailableBudgets(): Collection;
 
+    /**
+     * Calculate the average amount in the budgets available in this period.
+     * Grouped by day.
+     *
+     * @param Carbon $start
+     * @param Carbon $end
+     *
+     * @return string
+     */
+    public function getAverageAvailable(Carbon $start, Carbon $end): string;
+
     /**
      * @param Budget $budget
      * @param Carbon $start
@@ -238,7 +249,6 @@ interface BudgetRepositoryInterface
      */
     public function spentInPeriod(Collection $budgets, Collection $accounts, Carbon $start, Carbon $end): string;
 
-
     /**
      * @param Collection $accounts
      * @param Carbon     $start