Add preliminary missing airline check

app/Services/AdminService.php

@@ -5,6 +5,7 @@ namespace App\Services;
 use App\DTOs\MissingLivery;
 use App\Models\IgnoredMissingLivery;
 use App\Models\UserFlight;
+use Illuminate\Support\Enumerable;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Collection;
 
@@ -45,4 +46,36 @@ class AdminService
             ->sortBy('airline_name')
             ->values();
     }
+
+    function getMissingAirlines(): Enumerable|Collection
+    {
+        $flights = UserFlight::whereNotNull('flight_number')
+            ->whereNull('airline_id')
+            ->with('user:id,name') // adjust to your actual user relation/columns
+            ->get(['id', 'flight_number', 'user_id']);
+
+        return $flights
+            ->map(function ($flight) {
+                // Extract the 2-character IATA-style prefix (letters and/or digits)
+                preg_match('/^([A-Za-z0-9]{2})\d+/', trim($flight->flight_number), $matches);
+
+                return [
+                    'code' => $matches[1] ?? null,
+                    'flight_number' => $flight->flight_number,
+                    'link' => "/u/{$flight->user->name}/flight/{$flight->id}",
+                ];
+            })
+            ->filter(fn ($f) => $f['code'] !== null) // drop any that didn't match the pattern
+            ->groupBy('code')
+            ->map(function ($group, $code) {
+                return [
+                    'code' => $code,
+                    'flights' => $group->map(fn ($f) => [
+                        'flight_number' => $f['flight_number'],
+                        'link' => $f['link'],
+                    ])->values()->all(),
+                ];
+            })
+            ->values();
+    }
 }