ProfileDownloadFragment: Stop catching all exceptions

..instead, use the error value returned in the foreground task result.

Catching all exceptions will result in cancellation being ignored when
the fragment is destroyed.

app-common/src/main/java/im/angry/openeuicc/service/EuiccChannelManagerService.kt

@@ -14,6 +14,7 @@ import im.angry.openeuicc.common.R
 import im.angry.openeuicc.core.EuiccChannelManager
 import im.angry.openeuicc.util.*
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableSharedFlow
@@ -24,6 +25,7 @@ import kotlinx.coroutines.flow.onCompletion
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.takeWhile
 import kotlinx.coroutines.flow.transformWhile
+import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import kotlinx.coroutines.withTimeoutOrNull
@@ -194,7 +196,7 @@ class EuiccChannelManagerService : LifecycleService(), OpenEuiccContextMarker {
             updateForegroundNotification(title, iconRes)
 
             try {
-                withContext(Dispatchers.IO) {
+                withContext(Dispatchers.IO + NonCancellable) { // Any LPA-related task must always complete
                     this@EuiccChannelManagerService.task()
                 }
                 // This update will be sent by the subscriber (as shown below)
@@ -204,7 +206,9 @@ class EuiccChannelManagerService : LifecycleService(), OpenEuiccContextMarker {
                 Log.e(TAG, Log.getStackTraceString(t))
                 foregroundTaskState.value = ForegroundTaskState.Done(t)
             } finally {
-                stopSelf()
+                if (isActive) {
+                    stopSelf()
+                }
             }
         }
 

app-common/src/main/java/im/angry/openeuicc/ui/ProfileDownloadFragment.kt

@@ -215,18 +215,22 @@ class ProfileDownloadFragment : BaseMaterialDialogFragment(),
         lifecycleScope.launch {
             ensureEuiccChannelManager()
             euiccChannelManagerService.waitForForegroundTask()
-            try {
-                doDownloadProfile(server, code, confirmationCode, imei)
-            } catch (e: Exception) {
+            val res = doDownloadProfile(server, code, confirmationCode, imei)
+
+            if (res == null || res.error != null) {
                 Log.d(TAG, "Error downloading profile")
-                Log.d(TAG, Log.getStackTraceString(e))
-                Toast.makeText(context, R.string.profile_download_failed, Toast.LENGTH_LONG).show()
-            } finally {
-                if (parentFragment is EuiccProfilesChangedListener) {
-                    (parentFragment as EuiccProfilesChangedListener).onEuiccProfilesChanged()
+
+                if (res?.error != null) {
+                    Log.d(TAG, Log.getStackTraceString(res.error))
                 }
-                dismiss()
+
+                Toast.makeText(requireContext(), R.string.profile_download_failed, Toast.LENGTH_LONG).show()
             }
+
+            if (parentFragment is EuiccProfilesChangedListener) {
+                (parentFragment as EuiccProfilesChangedListener).onEuiccProfilesChanged()
+            }
+            dismiss()
         }
     }
 
@@ -254,7 +258,7 @@ class ProfileDownloadFragment : BaseMaterialDialogFragment(),
             }
         }.last()
 
-        (res as? EuiccChannelManagerService.ForegroundTaskState.Done)?.error?.let { throw it }
+        res as? EuiccChannelManagerService.ForegroundTaskState.Done
     }
 
     override fun onDismiss(dialog: DialogInterface) {