feat: add Weeztix OAuth, coupon codes, and Mailwizz mapping

Implement Weeztix integration per documentation: database config and
subscriber coupon_code, OAuth redirect/callback, admin setup UI with
company/coupon selection via AJAX, synchronous coupon creation on public
subscribe with duplicate and rate-limit handling, Mailwizz field mapping
for coupon codes, subscriber table and CSV export, and connection hint
on the pages list.

Made-with: Cursor

app/Models/MailwizzConfig.php

@@ -21,6 +21,7 @@ class MailwizzConfig extends Model
         'field_first_name',
         'field_last_name',
         'field_phone',
+        'field_coupon_code',
         'tag_field',
         'tag_value',
     ];

app/Models/PreregistrationPage.php

@@ -162,6 +162,11 @@ class PreregistrationPage extends Model
         return $this->hasOne(MailwizzConfig::class);
     }
 
+    public function weeztixConfig(): HasOne
+    {
+        return $this->hasOne(WeeztixConfig::class);
+    }
+
     public function isBeforeStart(): bool
     {
         return Carbon::now()->lt($this->start_date);

app/Models/Subscriber.php

@@ -22,6 +22,7 @@ class Subscriber extends Model
         'phone',
         'synced_to_mailwizz',
         'synced_at',
+        'coupon_code',
     ];
 
     protected function casts(): array
@@ -95,7 +96,8 @@ class Subscriber extends Model
             $q->where('first_name', 'like', $like)
                 ->orWhere('last_name', 'like', $like)
                 ->orWhere('email', 'like', $like)
-                ->orWhere('phone', 'like', $like);
+                ->orWhere('phone', 'like', $like)
+                ->orWhere('coupon_code', 'like', $like);
         });
     }
 }

app/Models/WeeztixConfig.php

@@ -0,0 +1,64 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class WeeztixConfig extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'preregistration_page_id',
+        'client_id',
+        'client_secret',
+        'redirect_uri',
+        'access_token',
+        'refresh_token',
+        'token_expires_at',
+        'refresh_token_expires_at',
+        'company_guid',
+        'company_name',
+        'coupon_guid',
+        'coupon_name',
+        'code_prefix',
+        'usage_count',
+        'is_connected',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'client_id' => 'encrypted',
+            'client_secret' => 'encrypted',
+            'access_token' => 'encrypted',
+            'refresh_token' => 'encrypted',
+            'token_expires_at' => 'datetime',
+            'refresh_token_expires_at' => 'datetime',
+            'is_connected' => 'boolean',
+        ];
+    }
+
+    public function preregistrationPage(): BelongsTo
+    {
+        return $this->belongsTo(PreregistrationPage::class);
+    }
+
+    public function isTokenExpired(): bool
+    {
+        return ! $this->token_expires_at || $this->token_expires_at->isPast();
+    }
+
+    public function isRefreshTokenExpired(): bool
+    {
+        if ($this->refresh_token_expires_at === null) {
+            return false;
+        }
+
+        return $this->refresh_token_expires_at->isPast();
+    }
+}