Update

app/Models/ExportToken.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ExportToken extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'user_id',
+        'token',
+        'is_premium',
+        'credits_reserved',
+        'expires_at',
+        'used_at',
+    ];
+
+    protected $casts = [
+        'is_premium' => 'boolean',
+        'expires_at' => 'datetime',
+        'used_at' => 'datetime',
+    ];
+
+    public function user(): BelongsTo
+    {
+        return $this->belongsTo(User::class);
+    }
+
+    public function isExpired(): bool
+    {
+        return $this->expires_at->isPast();
+    }
+
+    public function isUsed(): bool
+    {
+        return !is_null($this->used_at);
+    }
+
+    public function isValid(): bool
+    {
+        return !$this->isExpired() && !$this->isUsed();
+    }
+
+    public function markAsUsed(): void
+    {
+        $this->update(['used_at' => now()]);
+    }
+
+    public function scopeExpiredAndUnused($query)
+    {
+        return $query->where('expires_at', '<', now())
+                    ->whereNull('used_at');
+    }
+
+    public function scopeForUser($query, $userId)
+    {
+        return $query->where('user_id', $userId);
+    }
+}