Fixes crash with backups

app/src/main/java/net/pokeranalytics/android/api/BackupApi.kt

@@ -3,7 +3,7 @@ package net.pokeranalytics.android.api
 import android.content.Context
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
+import kotlinx.coroutines.async
 import net.pokeranalytics.android.util.extensions.isNetworkAvailable
 import okhttp3.MediaType
 import okhttp3.MultipartBody
@@ -40,7 +40,7 @@ object BackupApi {
     val service = BackupService()
 
     // curl -F recipient=laurent@staxriver.com -F file=@test.txt https://www.pokeranalytics.net/backup/send
-    fun backupFile(context: Context, mail: String, fileName: String, fileContent: String): Boolean {
+    suspend fun backupFile(context: Context, mail: String, fileName: String, fileContent: String): Boolean {
 
         val filePart = MultipartBody.Part.createFormData(
             "file",
@@ -51,12 +51,20 @@ object BackupApi {
         val mailPart = MultipartBody.Part.createFormData("recipient", mail)
 
         return if (context.isNetworkAvailable()) {
-            CoroutineScope(context = Dispatchers.IO).launch {
+            var success = false
+            val job = CoroutineScope(context = Dispatchers.IO).async {
+                success = try {
                     val response = service.backupApi.postFile(mailPart, filePart).execute()
                     Timber.d("response code = ${response.code()}")
                     Timber.d("success = ${response.isSuccessful}")
-            }
                     true
+                } catch (e: Exception) {
+                    Timber.d("!!! backup failed: ${e.message}")
+                    false
+                }
+            }
+            job.await()
+            return success
         } else {
             false
         }

app/src/main/java/net/pokeranalytics/android/util/BackupOperator.kt

@@ -3,6 +3,9 @@ package net.pokeranalytics.android.util
 import android.content.Context
 import io.realm.Realm
 import io.realm.RealmResults
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import net.pokeranalytics.android.api.BackupApi
 import net.pokeranalytics.android.model.realm.Session
 import net.pokeranalytics.android.model.realm.Transaction
@@ -54,8 +57,10 @@ class BackupOperator(var context: Context) {
             val csv = ProductCSVDescriptors.pokerAnalyticsAndroid6Sessions.toCSV(sessions)
             val fileName = "sessions_${Date().dateTimeFileFormatted}.csv"
 
+            CoroutineScope(context = Dispatchers.IO).launch {
                 if (BackupApi.backupFile(context, email, fileName, csv)) {
-                this.sessionsChanged = false
+                    sessionsChanged = false
+                }
             }
         }
 
@@ -68,8 +73,11 @@ class BackupOperator(var context: Context) {
             val transactions = this.realm.where(Transaction::class.java).findAll().sort("date")
             val csv = ProductCSVDescriptors.pokerAnalyticsAndroidTransactions.toCSV(transactions)
             val fileName = "transactions_${Date().dateTimeFileFormatted}.csv"
+
+            CoroutineScope(context = Dispatchers.IO).launch {
                 if (BackupApi.backupFile(context, email, fileName, csv)) {
-                this.transactionsChanged = false
+                    transactionsChanged = false
+                }
             }
         }