Send notification to admin after customer pay the invoice

app/Notifications/Customer/Invoice.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace App\Notifications\Customer;
+
+use Illuminate\Notifications\Notification;
+use Illuminate\Notifications\Messages\MailMessage;
+
+class Invoice extends Notification
+{
+    /**
+     * The bill model.
+     *
+     * @var object
+     */
+    public $invoice;
+
+    public $invoice_payment;
+
+    /**
+     * Create a notification instance.
+     *
+     * @param  object  $invoice
+     */
+    public function __construct($invoice, $invoice_payment)
+    {
+        $this->queue = 'high';
+        $this->delay = config('queue.connections.database.delay');
+
+        $this->invoice = $invoice;
+        $this->invoice_payment = $invoice_payment;
+    }
+
+    /**
+     * Get the notification's channels.
+     *
+     * @param  mixed  $notifiable
+     * @return array|string
+     */
+    public function via($notifiable)
+    {
+        return ['mail', 'database'];
+    }
+
+    /**
+     * Build the mail representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return \Illuminate\Notifications\Messages\MailMessage
+     */
+    public function toMail($notifiable)
+    {
+        $message = (new MailMessage)
+            ->line(trans('customers.notification.message', ['invoice_number' => $this->invoice->invoice_number, 'amount' => money($this->invoice_payment->amount, $this->invoice_payment->currency_code, true), 'customer' => $this->invoice->customer_name]));
+
+        // Override per company as Laravel doesn't read config
+        $message->from(config('mail.from.address'), config('mail.from.name'));
+
+        // Attach the PDF file if available
+        if (isset($this->invoice->pdf_path)) {
+            $message->attach($this->invoice->pdf_path, [
+                'mime' => 'application/pdf',
+            ]);
+        }
+
+        $message->action(trans('customers.notification.button'), url('incomes/invoices', $this->invoice->id, true));
+
+        return $message;
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return array
+     */
+    public function toArray($notifiable)
+    {
+        return [
+            'invoice_id' => $this->invoice->id,
+            'amount' => $this->invoice->amount,
+        ];
+    }
+}