add calculate base expenses migration

database/migrations/2021_12_09_054033_calculate_base_values_for_expenses.php

@@ -0,0 +1,45 @@
+<?php
+
+use Crater\Models\CompanySetting;
+use Crater\Models\Expense;
+use Crater\Models\User;
+use Illuminate\Database\Migrations\Migration;
+
+class CalculateBaseValuesForExpenses extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $user = User::where('role', 'super admin')->first();
+        if ($user) {
+            $companyId = $user->companies()->first()->id;
+
+            $currency_id = CompanySetting::getSetting('currency', $companyId);
+
+            $expenses = Expense::where('company_id', $companyId)->where('currency_id', null)->get();
+            if ($expenses) {
+                $expenses->map(function ($expense) use ($currency_id) {
+                    $expense->update([
+                        'currency_id' => $currency_id,
+                        'exchange_rate' => 1,
+                        'base_amount' => $expense->amount,
+                    ]);
+                });
+            }
+        }
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+}