Revert "Cleanup in preparation of an overhaul."

This reverts commit 5662a02a36.

app/lib/FireflyIII/Database/Account/AccountInterface.php

@@ -21,6 +21,34 @@ interface AccountInterface
      */
     public function countAccountsByType(array $types);
 
+    /**
+     * Counts the number of total asset accounts. Useful for DataTables.
+     *
+     * @return int
+     */
+    public function countAssetAccounts();
+
+    /**
+     * Counts the number of total expense accounts. Useful for DataTables.
+     *
+     * @return int
+     */
+    public function countExpenseAccounts();
+
+    /**
+     * Counts the number of total revenue accounts. Useful for DataTables.
+     *
+     * @return int
+     */
+    public function countRevenueAccounts();
+
+    /**
+     * @param \Account $account
+     *
+     * @return \Account|null
+     */
+    public function findInitialBalanceAccount(\Account $account);
+
     /**
      * Get all accounts of the selected types. Is also capable of handling DataTables' parameters.
      *
@@ -30,6 +58,24 @@ interface AccountInterface
      */
     public function getAccountsByType(array $types);
 
+    /**
+     * Get all asset accounts. The parameters are optional and are provided by the DataTables plugin.
+     *
+     * @return Collection
+     */
+    public function getAssetAccounts();
+
+    /**
+     * @return Collection
+     */
+    public function getExpenseAccounts();
+
+    /**
+     * Get all revenue accounts.
+     *
+     * @return Collection
+     */
+    public function getRevenueAccounts();
 
     /**
      * @param \Account $account