Add HR resource labels and helper methods for various resources; update locale handling in user model and department factory

app/Models/Department.php

@@ -9,6 +9,7 @@ use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Support\Str;
 
 class Department extends Model
 {
@@ -30,6 +31,38 @@ class Department extends Model
         ];
     }
 
+    protected static function booted(): void
+    {
+        static::saving(function (Department $department): void {
+            if (blank($department->code) && filled($department->name)) {
+                $department->code = static::generateUniqueCodeFromName(
+                    $department->name,
+                    $department->id,
+                );
+            }
+        });
+    }
+
+    public static function generateUniqueCodeFromName(string $name, ?int $ignoreId = null): string
+    {
+        $base = Str::upper(Str::slug($name));
+
+        $query = static::query()
+            ->when($ignoreId, fn ($query) => $query->where('id', '!=', $ignoreId));
+
+        if (! $query->clone()->where('code', $base)->exists()) {
+            return $base;
+        }
+
+        $maxSuffix = $query->clone()
+            ->where('code', 'like', "{$base}-%")
+            ->pluck('code')
+            ->map(fn (string $code): int => (int) Str::after($code, "{$base}-"))
+            ->max();
+
+        return "{$base}-".(($maxSuffix ?? 0) + 1);
+    }
+
     public function employees(): HasMany
     {
         return $this->hasMany(Employee::class);