first upload all files

Modules/Tax/Entities/TaxClass.php

@@ -0,0 +1,140 @@
+<?php
+
+namespace Modules\Tax\Entities;
+
+use Modules\Admin\Ui\AdminTable;
+use Modules\Support\Eloquent\Model;
+use Illuminate\Support\Facades\Cache;
+use Modules\Product\Entities\Product;
+use Modules\Support\Eloquent\Translatable;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class TaxClass extends Model
+{
+    use Translatable, SoftDeletes;
+
+    const SHIPPING_ADDRESS = 'shipping_address';
+    const BILLING_ADDRESS = 'billing_address';
+    const STORE_ADDRESS = 'store_address';
+
+    /**
+     * The relations to eager load on every query.
+     *
+     * @var array
+     */
+    protected $with = ['translations'];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['based_on'];
+
+    /**
+     * The attributes that should be mutated to dates.
+     *
+     * @var array
+     */
+    protected $dates = ['start_date', 'end_date', 'deleted_at'];
+
+    /**
+     * The attributes that are translatable.
+     *
+     * @var array
+     */
+    public $translatedAttributes = ['label'];
+
+    /**
+     * Perform any actions required after the model boots.
+     *
+     * @return void
+     */
+    protected static function booted()
+    {
+        static::saved(function ($taxClass) {
+            $taxClass->saveRates(request('rates', []));
+        });
+    }
+
+    /**
+     * Get tag list.
+     *
+     * @return \Illuminate\Database\Eloquent\Collection
+     */
+    public static function list()
+    {
+        return Cache::tags('tax_classes')->rememberForever(md5('tax_classes.list:' . locale()), function () {
+            return self::all()->sortBy('label')->pluck('label', 'id');
+        });
+    }
+
+    public function findTaxRate($addresses)
+    {
+        return $this->taxRates()
+            ->findByAddress($this->determineAddress($addresses))
+            ->first();
+    }
+
+    public function determineAddress($addresses)
+    {
+        if ($this->based_on === self::SHIPPING_ADDRESS) {
+            return $addresses['shipping'] ?? [];
+        }
+
+        if ($this->based_on === self::BILLING_ADDRESS) {
+            return $addresses['billing'] ?? [];
+        }
+
+        if ($this->based_on === self::STORE_ADDRESS) {
+            return [
+                'address_1' => setting('store_address_1'),
+                'address_2' => setting('store_address_2'),
+                'city' => setting('store_city'),
+                'state' => setting('store_state'),
+                'zip' => setting('store_zip'),
+                'country' => setting('store_country'),
+            ];
+        }
+
+        return [];
+    }
+
+    public function taxRates()
+    {
+        return $this->hasMany(TaxRate::class)->orderBy('position');
+    }
+
+    public function products()
+    {
+        return $this->hasMany(Product::class);
+    }
+
+    public function table()
+    {
+        return new AdminTable($this->newQuery());
+    }
+
+    public function saveRates($rates = [])
+    {
+        $ids = $this->getDeleteCandidates($rates);
+
+        if ($ids->isNotEmpty()) {
+            $this->taxRates()->whereIn('id', $ids)->delete();
+        }
+
+        foreach (array_reset_index($rates) as $index => $rate) {
+            $this->taxRates()->updateOrCreate(
+                ['id' => $rate['id']],
+                $rate + ['position' => $index]
+            );
+        }
+    }
+
+    private function getDeleteCandidates($rates = [])
+    {
+        return $this->taxRates()
+            ->pluck('id')
+            ->diff(array_pluck($rates, 'id'));
+    }
+}

Modules/Tax/Entities/TaxClassTranslation.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Modules\Tax\Entities;
+
+use Modules\Support\Eloquent\TranslationModel;
+
+class TaxClassTranslation extends TranslationModel
+{
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['label'];
+}

Modules/Tax/Entities/TaxRate.php

@@ -0,0 +1,128 @@
+<?php
+
+namespace Modules\Tax\Entities;
+
+use Modules\Support\Money;
+use Modules\Order\Entities\Order;
+use Modules\Support\Eloquent\Model;
+use Modules\Order\Entities\OrderTax;
+use Modules\Support\Eloquent\Translatable;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class TaxRate extends Model
+{
+    use Translatable, SoftDeletes;
+
+    /**
+     * The relations to eager load on every query.
+     *
+     * @var array
+     */
+    protected $with = ['translations'];
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['country', 'state', 'city', 'zip', 'rate', 'position'];
+
+    /**
+     * The attributes that should be mutated to dates.
+     *
+     * @var array
+     */
+    protected $dates = ['start_date', 'end_date', 'deleted_at'];
+
+    /**
+     * The attributes that are translatable.
+     *
+     * @var array
+     */
+    public $translatedAttributes = ['name'];
+
+    public function orders()
+    {
+        return $this->belongsToMany(Order::class, 'order_taxes')
+            ->using(OrderTax::class)
+            ->as('order_tax')
+            ->withPivot('amount');
+    }
+
+    public function scopeFindByAddress($query, $address)
+    {
+        $address = $this->mergeDefaultAddress($address);
+
+        $query->whereIn('country', [$address['country'], '*'])
+            ->whereIn('state', [$address['state'], '*'])
+            ->whereIn('city', [$address['city'], '*'])
+            ->whereIn('zip', [$address['zip'], '*'])
+            ->orderByRaw($this->rawOrderClause(), [
+                $address['country'],
+                $address['state'],
+                $address['city'],
+                $address['zip'],
+            ])
+            ->orderBy('position');
+    }
+
+    private function mergeDefaultAddress($address)
+    {
+        return $address += ['country' => null, 'state' => null, 'city' => null, 'zip' => null];
+    }
+
+    private function rawOrderClause()
+    {
+        return "(
+            CASE WHEN country = ? THEN 1 ELSE 0 END +
+            CASE WHEN state = ? THEN 1 ELSE 0 END +
+            CASE WHEN city = ? THEN 1 ELSE 0 END +
+            CASE WHEN zip = ? THEN 1 ELSE 0 END
+        ) DESC";
+    }
+
+    public function getCountryAttribute($country)
+    {
+        return $country === '*' ? null : $country;
+    }
+
+    public function setCountryAttribute($country)
+    {
+        $this->attributes['country'] = $country ?: '*';
+    }
+
+    public function getStateAttribute($state)
+    {
+        return $state === '*' ? null : $state;
+    }
+
+    public function setStateAttribute($state)
+    {
+        $this->attributes['state'] = $state ?: '*';
+    }
+
+    public function getCityAttribute($city)
+    {
+        return $city === '*' ? null : $city;
+    }
+
+    public function setCityAttribute($city)
+    {
+        $this->attributes['city'] = $city ?: '*';
+    }
+
+    public function getZipAttribute($zip)
+    {
+        return $zip === '*' ? null : $zip;
+    }
+
+    public function setZipAttribute($zip)
+    {
+        $this->attributes['zip'] = $zip ?: '*';
+    }
+
+    public function getTotalAttribute($total)
+    {
+        return Money::inDefaultCurrency($total);
+    }
+}

Modules/Tax/Entities/TaxRateTranslation.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Modules\Tax\Entities;
+
+use Modules\Support\Eloquent\TranslationModel;
+
+class TaxRateTranslation extends TranslationModel
+{
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array
+     */
+    protected $fillable = ['name'];
+}