complere story 11.1 with qa tests

app/Models/Consultation.php

@@ -16,6 +16,9 @@ class Consultation extends Model
 
     protected $fillable = [
         'user_id',
+        'guest_name',
+        'guest_email',
+        'guest_phone',
         'booking_date',
         'booking_time',
         'problem_summary',
@@ -44,6 +47,22 @@ class Consultation extends Model
         ];
     }
 
+    protected static function booted(): void
+    {
+        static::saving(function (Consultation $consultation) {
+            // Either user_id or guest fields must be present
+            if (is_null($consultation->user_id)) {
+                if (empty($consultation->guest_name) ||
+                    empty($consultation->guest_email) ||
+                    empty($consultation->guest_phone)) {
+                    throw new \InvalidArgumentException(
+                        'Guest consultations require guest_name, guest_email, and guest_phone'
+                    );
+                }
+            }
+        });
+    }
+
     /**
      * Get the user that owns the consultation.
      */
@@ -52,6 +71,44 @@ class Consultation extends Model
         return $this->belongsTo(User::class);
     }
 
+    /**
+     * Check if this is a guest consultation (no linked user).
+     */
+    public function isGuest(): bool
+    {
+        return is_null($this->user_id);
+    }
+
+    /**
+     * Get the client's display name.
+     */
+    public function getClientName(): string
+    {
+        return $this->isGuest()
+            ? $this->guest_name
+            : $this->user->full_name;
+    }
+
+    /**
+     * Get the client's email address.
+     */
+    public function getClientEmail(): string
+    {
+        return $this->isGuest()
+            ? $this->guest_email
+            : $this->user->email;
+    }
+
+    /**
+     * Get the client's phone number.
+     */
+    public function getClientPhone(): ?string
+    {
+        return $this->isGuest()
+            ? $this->guest_phone
+            : $this->user->phone;
+    }
+
     /**
      * Mark consultation as completed.
      *
@@ -205,4 +262,20 @@ class Consultation extends Model
                 ]);
         });
     }
+
+    /**
+     * Scope for guest consultations (no linked user).
+     */
+    public function scopeGuests(Builder $query): Builder
+    {
+        return $query->whereNull('user_id');
+    }
+
+    /**
+     * Scope for client consultations (has linked user).
+     */
+    public function scopeClients(Builder $query): Builder
+    {
+        return $query->whereNotNull('user_id');
+    }
 }