restore composer.json, add mysqli extension

database/migrations/2020_08_22_130059_create_billings_table.php

@@ -0,0 +1,40 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateBillingsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('billings', function (Blueprint $table) {
+            $table->id();
+
+            $table->unsignedBigInteger('order_id');
+            $table->enum('status', ['payed', 'waiting', 'refused'])->default('waiting');
+            $table->integer('amount')->default(0);
+            $table->string('payment_system')->nullable();
+            $table->string('transaction_id')->nullable();
+            $table->softDeletes();
+            $table->timestamps();
+
+            $table->foreign('order_id')->references('id')->on('orders');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('billings');
+    }
+}