merge upstream

app/src/main/java/ru/myitschool/work/data/repo/AuthRepository.kt

@@ -7,10 +7,9 @@ object AuthRepository {
     private var codeCache: String? = null
 
     suspend fun checkAndSave(text: String): Result<Boolean> {
-        return NetworkDataSource.checkAuth(text).onSuccess { success ->
-            if (success) {
-                codeCache = text
-            }
+        return NetworkDataSource.checkAuth(text).mapCatching { success ->
+            if (success) codeCache = text
+            success
         }
     }
 }

app/src/main/java/ru/myitschool/work/domain/auth/CheckAndSaveAuthCodeUseCase.kt

@@ -8,6 +8,10 @@ class CheckAndSaveAuthCodeUseCase(
     suspend operator fun invoke(
         text: String
     ): Result<Unit> {
+
+        val isValid = text.length == 4 && text.all {it.isLetterOrDigit()}
+        if (!isValid) return Result.failure(IllegalArgumentException("Неверный формат кода!"))
+
         return repository.checkAndSave(text).mapCatching { success ->
             if (!success) error("Code is incorrect")
         }