try discount

Author: Babichev Maxim

database/migrations_v2/2019_10_02_193759_add_discount_transfers_table.php

@@ -0,0 +1,41 @@
+<?php
+
+use Bavix\Wallet\Models\Transfer;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddDiscountTransfersTable extends Migration
+{
+
+    /**
+     * @return string
+     */
+    protected function table(): string
+    {
+        return (new Transfer())->getTable();
+    }
+
+    /**
+     * @return void
+     */
+    public function up(): void
+    {
+        Schema::table($this->table(), function (Blueprint $table) {
+            $table->bigInteger('discount')
+                ->default(0)
+                ->after('withdraw_id');
+        });
+    }
+
+    /**
+     * @return void
+     */
+    public function down(): void
+    {
+        Schema::table($this->table(), function (Blueprint $table) {
+            $table->dropColumn('discount');
+        });
+    }
+
+}

src/Interfaces/Discount.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Bavix\Wallet\Interfaces;
+
+interface Discount extends Product
+{
+    /**
+     * @param Customer $customer
+     * @return int
+     */
+    public function getDiscountProduct(Customer $customer): int;
+}

src/Objects/Bring.php

@@ -46,6 +46,11 @@ class Bring
      */
     protected $fee;
 
+    /**
+     * @var int
+     */
+    protected $discount;
+
     /**
      * Bring constructor.
      * @throws
@@ -73,6 +78,16 @@ public function setStatus(string $status): self
         return $this;
     }
 
+    /**
+     * @param int $discount
+     * @return static
+     */
+    public function setDiscount(int $discount): self
+    {
+        $this->discount = $discount;
+        return $this;
+    }
+
     /**
      * @return Wallet
      */
@@ -153,6 +168,14 @@ public function getUuid(): string
         return $this->uuid;
     }
 
+    /**
+     * @return string
+     */
+    public function getDiscount(): int
+    {
+        return $this->discount;
+    }
+
     /**
      * @return int
      */
@@ -199,6 +222,7 @@ public function toArray(): array
             'from_id' => $this->getFrom()->getKey(),
             'to_type' => $this->getTo()->getMorphClass(),
             'to_id' => $this->getTo()->getKey(),
+            'discount' => $this->getDiscount(),
             'fee' => $this->getFee(),
             'uuid' => $this->getUuid(),
         ];

src/Services/CommonService.php

@@ -45,18 +45,20 @@ public function transfer(Wallet $from, Wallet $to, int $amount, ?array $meta = n
     public function forceTransfer(Wallet $from, Wallet $to, int $amount, ?array $meta = null, string $status = Transfer::STATUS_TRANSFER): Transfer
     {
         return app(LockService::class)->lock($this, __FUNCTION__, function () use ($from, $to, $amount, $meta, $status) {
+            $from = app(WalletService::class)->getWallet($from);
+            $discount = app(WalletService::class)->discount($from, $to);
+            $amount -= $discount;
+
             $fee = app(WalletService::class)->fee($to, $amount);
             $withdraw = $this->forceWithdraw($from, $amount + $fee, $meta);
             $deposit = $this->deposit($to, $amount, $meta);
 
-            $from = app(WalletService::class)
-                ->getWallet($from);
-
             $transfers = $this->multiBrings([
                 app(Bring::class)
                     ->setStatus($status)
                     ->setDeposit($deposit)
                     ->setWithdraw($withdraw)
+                    ->setDiscount($discount)
                     ->setFrom($from)
                     ->setTo($to)
             ]);

src/Services/WalletService.php

@@ -3,7 +3,10 @@
 namespace Bavix\Wallet\Services;
 
 use Bavix\Wallet\Exceptions\AmountInvalid;
+use Bavix\Wallet\Interfaces\Customer;
+use Bavix\Wallet\Interfaces\Discount;
 use Bavix\Wallet\Interfaces\MinimalTaxable;
+use Bavix\Wallet\Interfaces\Product;
 use Bavix\Wallet\Interfaces\Storable;
 use Bavix\Wallet\Interfaces\Taxable;
 use Bavix\Wallet\Interfaces\Wallet;
@@ -14,6 +17,21 @@
 class WalletService
 {
 
+    /**
+     * @param Wallet $customer
+     * @param Wallet $product
+     * @return int
+     */
+    public function discount(Wallet $customer, Wallet $product): int
+    {
+        if ($customer instanceof Customer && $product instanceof Discount) {
+            return $product->getDiscountProduct($customer);
+        }
+
+        // without discount
+        return 0;
+    }
+
     /**
      * @param Wallet $object
      * @return int

src/Traits/CanExchange.php

@@ -63,6 +63,7 @@ public function forceExchange(Wallet $to, int $amount, ?array $meta = null): Tra
 
                 $transfers = app(CommonService::class)->multiBrings([
                     app(Bring::class)
+                        ->setDiscount(0)
                         ->setStatus(Transfer::STATUS_EXCHANGE)
                         ->setDeposit($deposit)
                         ->setWithdraw($withdraw)

src/Traits/HasGift.php

@@ -64,7 +64,8 @@ public function gift(Wallet $to, Product $product, bool $force = null): Transfer
              * That's why I address him like this!
              */
             return app(DbService::class)->transaction(static function () use ($santa, $to, $product, $force) {
-                $amount = $product->getAmountProduct();
+                $discount = app(WalletService::class)->discount($santa, $product);
+                $amount = $product->getAmountProduct() - $discount;
                 $meta = $product->getMetaProduct();
                 $fee = app(WalletService::class)
                     ->fee($product, $amount);
@@ -87,6 +88,7 @@ public function gift(Wallet $to, Product $product, bool $force = null): Transfer
                 $transfers = $commonService->assemble([
                     app(Bring::class)
                         ->setStatus(Transfer::STATUS_GIFT)
+                        ->setDiscount($discount)
                         ->setDeposit($deposit)
                         ->setWithdraw($withdraw)
                         ->setFrom($from)