wip

database/migrations/2024_07_28_082248_create_bazar_discount_rates_table.php

@@ -11,7 +11,7 @@
      */
     public function up(): void
     {
-        Schema::create('bazar_discount_rates', function (Blueprint $table) {
+        Schema::create('bazar_discount_rates', static function (Blueprint $table): void {
             $table->id();
             $table->string('name');
             $table->string('type');

database/migrations/2024_07_28_082257_create_bazar_discounts_table.php

@@ -11,9 +11,9 @@
      */
     public function up(): void
     {
-        Schema::create('bazar_discounts', function (Blueprint $table) {
+        Schema::create('bazar_discounts', static function (Blueprint $table): void {
             $table->id();
-            $table->foreignId('discount_rate_id')->constrained('bazar_discount_rates')->nullOnDelete();
+            $table->foreignId('discount_rate_id')->nullable()->constrained('bazar_discount_rates')->nullOnDelete();
             $table->morphs('discountable');
             $table->float('value')->unsigned();
             $table->timestamps();

database/migrations/2024_07_28_082300_create_bazar_buyable_tax_rate_table.php

@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('bazar_buyable_tax_rate', static function (Blueprint $table): void {
+            $table->id();
+            $table->foreignId('tax_rate_id')->constrained('bazar_tax_rates')->cascadeOnDelete();
+            $table->morphs('buyable');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('bazar_buyable_tax_rate');
+    }
+};

database/migrations/2024_07_28_082302_create_bazar_taxes_table.php

@@ -11,10 +11,10 @@
      */
     public function up(): void
     {
-        Schema::create('bazar_taxes', function (Blueprint $table) {
+        Schema::create('bazar_taxes', static function (Blueprint $table): void {
             $table->id();
-            $table->foreignId('tax_rate_id')->constrained('bazar_tax_rates')->nullOnDelete();
-            $table->foreignId('item_id')->constrained('bazar_items')->nullOnDelete();
+            $table->foreignId('tax_rate_id')->nullable()->constrained('bazar_tax_rates')->nullOnDelete();
+            $table->foreignId('item_id')->nullable()->constrained('bazar_items')->nullOnDelete();
             $table->float('value')->unsigned();
             $table->timestamps();
         });

src/Interfaces/Models/DiscountRate.php

@@ -12,6 +12,11 @@ interface DiscountRate
      */
     public function applicable(Discountable $model): bool;
 
+    /**
+     * Calculate the discount for the given model.
+     */
+    public function calculate(Discountable $model): float;
+
     /**
      * Apply the discount rate on the model.
      */

src/Interfaces/Models/Product.php

@@ -9,6 +9,7 @@
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\HasManyThrough;
 use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Database\Eloquent\Relations\MorphToMany;
 
 interface Product extends Buyable, Stockable
 {
@@ -37,6 +38,11 @@ public function categories(): BelongsToMany;
      */
     public function variants(): HasMany;
 
+    /**
+     * Get the tax rates for the product.
+     */
+    public function taxRates(): MorphToMany;
+
     /**
      * Get the variant of the given option.
      */

src/Interfaces/Models/TaxRate.php

@@ -2,7 +2,23 @@
 
 namespace Cone\Bazar\Interfaces\Models;
 
+use Cone\Bazar\Interfaces\Taxable;
+use Cone\Bazar\Models\Tax;
+
 interface TaxRate
 {
-    //
+    /**
+     * Determine wheter the discount rate is applicable on the model.
+     */
+    public function applicable(Taxable $model): bool;
+
+    /**
+     * Calculate the discount for the given model.
+     */
+    public function calculate(Taxable $model): float;
+
+    /**
+     * Apply the discount rate on the model.
+     */
+    public function apply(Taxable $model): ?Tax;
 }

src/Models/Product.php

@@ -18,6 +18,7 @@
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Illuminate\Database\Eloquent\SoftDeletes;
 use Illuminate\Database\Query\Builder as QueryBuilder;
 
@@ -91,6 +92,14 @@ public function variants(): HasMany
         return $this->hasMany(Variant::getProxiedClass());
     }
 
+    /**
+     * Get the tax rates for the product.
+     */
+    public function taxRates(): MorphToMany
+    {
+        return $this->morphToMany(TaxRate::getProxiedClass(), 'buyable', 'bazar_buyable_tax_rate');
+    }
+
     /**
      * Determine whether the buyable object is available for the checkoutable instance.
      */

src/Models/TaxRate.php

@@ -4,6 +4,7 @@
 
 use Cone\Bazar\Database\Factories\TaxRateFactory;
 use Cone\Bazar\Interfaces\Models\TaxRate as Contract;
+use Cone\Bazar\Interfaces\Taxable;
 use Cone\Root\Traits\InteractsWithProxy;
 use Illuminate\Database\Eloquent\Factories\Factory;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
@@ -43,4 +44,35 @@ protected static function newFactory(): Factory
     {
         return TaxRateFactory::new();
     }
+
+    /**
+     * Determine wheter the discount rate is applicable on the model.
+     */
+    public function applicable(Taxable $model): bool
+    {
+        return true;
+    }
+
+    /**
+     * Calculate the discount for the given model.
+     */
+    public function calculate(Taxable $model): float
+    {
+        return 0;
+    }
+
+    /**
+     * Apply the discount rate on the model.
+     */
+    public function apply(Taxable $model): ?Tax
+    {
+        if (! $this->applicable($model)) {
+            return null;
+        }
+
+        return $model->taxes()->updateOrCreate(
+            ['discount_rate_id' => $this->getKey()],
+            ['value' => $this->calculate($model)]
+        );
+    }
 }