Moved repository opening to repository manager

src/main/kotlin/app/git/RepositoryManager.kt

@@ -3,10 +3,31 @@ package app.git
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.eclipse.jgit.api.Git
+import org.eclipse.jgit.lib.Repository
+import org.eclipse.jgit.storage.file.FileRepositoryBuilder
+import java.io.File
 import javax.inject.Inject
 
 class RepositoryManager @Inject constructor() {
     suspend fun getRepositoryState(git: Git) = withContext(Dispatchers.IO) {
         return@withContext git.repository.repositoryState
     }
+
+    fun openRepository(directory: File): Repository {
+        val gitDirectory = if (directory.name == ".git") {
+            directory
+        } else {
+            val gitDir = File(directory, ".git")
+            if (gitDir.exists() && gitDir.isDirectory) {
+                gitDir
+            } else
+                directory
+        }
+
+        val builder = FileRepositoryBuilder()
+        return builder.setGitDir(gitDirectory)
+            .readEnvironment() // scan environment GIT_* variables
+            .findGitDir() // scan up the file system tree
+            .build()
+    }
 }

src/main/kotlin/app/viewmodels/TabViewModel.kt

@@ -106,21 +106,7 @@ class TabViewModel @Inject constructor(
     fun openRepository(directory: File) = tabState.safeProcessingWihoutGit {
         println("Trying to open repository ${directory.absoluteFile}")
 
-        val gitDirectory = if (directory.name == ".git") {
-            directory
-        } else {
-            val gitDir = File(directory, ".git")
-            if (gitDir.exists() && gitDir.isDirectory) {
-                gitDir
-            } else
-                directory
-        }
-
-        val builder = FileRepositoryBuilder()
-        val repository: Repository = builder.setGitDir(gitDirectory)
-            .readEnvironment() // scan environment GIT_* variables
-            .findGitDir() // scan up the file system tree
-            .build()
+        val repository: Repository = repositoryManager.openRepository(directory)
 
         try {
             repository.workTree // test if repository is valid