Add all files

app/Models/Traits/HasPlans.php

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+<?php
+
+namespace App\Models\Traits;
+
+use App\Classes\Price;
+use App\Models\Plan;
+
+trait HasPlans
+{
+    /**
+     * Get the plans (prices) of the product.
+     */
+    public function plans()
+    {
+        return $this->morphMany(Plan::class, 'priceable')->orderBy('sort');
+    }
+
+    /**
+     * Get available plans of the product.
+     */
+    public function availablePlans($currency = null)
+    {
+        $currency = $currency ?? session('currency', config('settings.default_currency'));
+
+        return $this->plans->filter(function ($plan) use ($currency) {
+            if ($plan->type === 'free') {
+                return true;
+            }
+
+            return $plan->prices->when($currency, function ($query) use ($currency) {
+                // Or where plan is free
+                return $query->where('currency_code', $currency);
+            })->isNotEmpty();
+        });
+    }
+
+    /**
+     * Get first price of the plan.
+     */
+    public function price($plan_id = null, $billing_period = null, $billing_unit = null, $currency = null)
+    {
+        $priceAndCurrency = [
+            'price' => null,
+            'currency' => null,
+        ];
+
+        // Check for free plan
+        if ($this->availablePlans()->where('type', 'free')->isNotEmpty()) {
+            return new Price(free: true, dontShowUnavailablePrice: $this->dontShowUnavailablePrice ?? false);
+        }
+
+        // If plan_id is not provided, and billing_period is provided, get the first plan with the billing period and time interval
+        if (!$plan_id && $billing_period && $billing_unit) {
+            $plan = $this->availablePlans()->where('billing_period', $billing_period)->where('billing_unit', $billing_unit)->first();
+            $plan_id = $plan->id ?? null;
+        }
+
+        $currency = $currency ?? session('currency', config('settings.default_currency'));
+
+        foreach ($this->availablePlans()->when($plan_id, function ($query) use ($plan_id) {
+            return $query->where('id', $plan_id);
+        }) as $plan) {
+            foreach ($plan->prices->when($currency, function ($query) use ($currency) {
+                return $query->where('currency_code', $currency);
+            }) as $price) {
+                if ($price->price < $priceAndCurrency['price'] || $priceAndCurrency['price'] === null) {
+                    $priceAndCurrency['price'] = $price;
+                    $priceAndCurrency['currency'] = $price->currency;
+                }
+            }
+
+            if ($priceAndCurrency['price']) {
+                break;
+            }
+        }
+
+        return new Price($priceAndCurrency, dontShowUnavailablePrice: $this->dontShowUnavailablePrice ?? false);
+    }
+}