Support Slack notifications

app/Notifications/PaymentCreated.php

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+<?php
+
+namespace App\Notifications;
+
+use Illuminate\Bus\Queueable;
+use Illuminate\Notifications\Notification;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\SlackMessage;
+
+class PaymentCreated extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    protected $payment;
+    protected $invoice;
+
+    /**
+     * Create a new notification instance.
+     *
+     * @return void
+     */
+    public function __construct($payment, $invoice)
+    {
+        $this->invoice = $invoice;
+        $this->payment = $payment;
+    }
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @param  mixed  $notifiable
+     * @return array
+     */
+    public function via($notifiable)
+    {
+        return ['slack'];
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return array
+     */
+    public function toSlack($notifiable)
+    {
+        $url = 'http://www.ninja.test/subscriptions/create';
+
+        return (new SlackMessage)
+                    ->from(APP_NAME)
+                    ->image('https://app.invoiceninja.com/favicon-v2.png')
+                    ->content(trans('texts.received_new_payment'))
+                    ->attachment(function ($attachment) {
+                        $invoiceName = $this->invoice->present()->titledName;
+                        $invoiceLink = $this->invoice->present()->multiAccountLink;
+                        $attachment->title($invoiceName, $invoiceLink)
+                                   ->fields([
+                                        trans('texts.client') => $this->invoice->client->getDisplayName(),
+                                        trans('texts.amount') => $this->payment->present()->amount,
+                                    ]);
+                    });
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @param  mixed  $notifiable
+     * @return array
+     */
+    public function toArray($notifiable)
+    {
+        return [
+            //
+        ];
+    }
+}

database/migrations/2018_03_08_150414_add_slack_notifications.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddSlackNotifications extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('users', function ($table) {
+            $table->string('slack_webhook_url')->nullable();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('users', function ($table) {
+            $table->dropColumn('slack_webhook_url');
+        });
+    }
+}