Appsumo (#232)

* Implemented webhooks

* oAuth wip

* Implement the whole auth flow

* Implement file upload limit depending on appsumo license

app/Models/License.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class License extends Model
+{
+    const STATUS_ACTIVE = 'active';
+    const STATUS_INACTIVE = 'inactive';
+
+    use HasFactory;
+
+    protected $fillable = [
+        'license_key',
+        'user_id',
+        'license_provider',
+        'status',
+        'meta'
+    ];
+
+    protected $casts = [
+        'meta' => 'array',
+    ];
+
+    public function user()
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function scopeActive($query)
+    {
+        return $query->where('status', self::STATUS_ACTIVE);
+    }
+
+    public function getMaxFileSizeAttribute()
+    {
+        return [
+            1 => 25000000, // 25 MB,
+            2 => 50000000, // 50 MB,
+            3 => 75000000, // 75 MB,
+        ][$this->meta['tier']];
+    }
+}