First attempt at storing an account.

app/Repositories/Account/AccountRepository.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace FireflyIII\Repositories\Account;
+
+use App;
+use FireflyIII\Models\Account;
+use FireflyIII\Models\AccountType;
+
+/**
+ * Class AccountRepository
+ *
+ * @package FireflyIII\Repositories\Account
+ */
+class AccountRepository implements AccountRepositoryInterface
+{
+
+    /**
+     * @param array $data
+     *
+     * @return Account;
+     */
+    public function store(array $data)
+    {
+        $newAccount = $this->_store($data);
+
+
+        // continue with the opposing account:
+        if ($data['openingBalance'] != 0) {
+            $type     = $data['openingBalance'] < 0 ? 'expense' : 'revenue';
+            $opposing = [
+                'user'        => $data['user'],
+                'accountType' => $type,
+                'name'        => $data['name'] . ' initial balance',
+                'active'      => false,
+            ];
+            $this->_store($opposing);
+        }
+
+        return $newAccount;
+
+    }
+
+    /**
+     * @param array $data
+     */
+    protected function _store(array $data)
+    {
+        $accountType = AccountType::whereType($data['accountType'])->first();
+        $newAccount  = new Account(
+            [
+                'user_id'         => $data['user'],
+                'account_type_id' => $accountType->id,
+                'name'            => $data['name'],
+                'active'          => $data['active'] === true ? true : false,
+            ]
+        );
+        if (!$newAccount->isValid()) {
+            App::abort(500);
+        }
+        $newAccount->save();
+    }
+
+}

app/Repositories/Account/AccountRepositoryInterface.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace FireflyIII\Repositories\Account;
+
+
+interface AccountRepositoryInterface
+{
+    public function store(array $data);
+}

app/Repositories/Journal/JournalRepository.php

@@ -0,0 +1,8 @@
+<?php
+
+namespace FireflyIII\Repositories\Journal;
+
+
+class JournalRepository implements JournalRepositoryInterface {
+
+}

app/Repositories/Journal/JournalRepositoryInterface.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: sander
+ * Date: 08/02/15
+ * Time: 18:15
+ */
+
+namespace FireflyIII\Repositories\Journal;
+
+
+interface JournalRepositoryInterface {
+
+}