Possibly fixed-for-good a bug that caused events to be fetched but not stored properly in the database; I believe this was caused by FetcherActivity.kt sequentially executing nukeEvents() and insertEvents(), but doing both asynchronously, and individually, which could mean that insertEvents() finishes before nukeEvents() and therefore nukeEvents() would delete the old events as well as the new ones. This doesn't seem entirely logical to me, as no ConflictStrategy has been configured, and inserting new events before the old ones have been cleared (since they both start their primary keys at 0) would have crashed the app.

app/src/main/java/com/denizk0461/studip/activity/FetcherActivity.kt

@@ -6,10 +6,8 @@ import android.os.Bundle
 import android.webkit.WebResourceRequest
 import android.webkit.WebView
 import android.webkit.WebViewClient
-import android.widget.Toast
 import androidx.lifecycle.ViewModelProvider
 import com.denizk0461.studip.R
-import com.denizk0461.studip.data.StudIPParser
 import com.denizk0461.studip.data.getThemedColor
 import com.denizk0461.studip.databinding.ActivityFetcherBinding
 import com.denizk0461.studip.viewmodel.FetcherViewModel
@@ -72,21 +70,25 @@ class FetcherActivity : Activity() {
             ) { p0 ->
                 try {
                     // Decode HTML and parse it into a list of StudIPEvent.kt
-                    StudIPParser().parse(URLDecoder.decode(p0, "UTF-8")) { events ->
-                        // Delete all previously fetched elements
-                        viewModel.nukeEvents()
-
-                        // Insert the list into the database
-                        viewModel.insertEvents(events)
-
-                        // Notify the user that the fetch was successful
-                        Toast.makeText(
-                            this, R.string.toast_fetch_finished, Toast.LENGTH_SHORT
-                        ).show()
-
-                        // Close the activity
-                        finish()
-                    }
+                    // TODO this exception handling and finish() is broken
+                    viewModel.parse(URLDecoder.decode(p0, "UTF-8"))
+//                    StudIPParser(application).parse(URLDecoder.decode(p0, "UTF-8")) { events ->
+//
+//                        // Delete all previously fetched elements
+////                        viewModel.nukeEvents()
+////                        viewModel.replaceEvents(events)
+//
+//                        // Insert the list into the database
+////                        viewModel.insertEvents(events)
+//
+//                        // Notify the user that the fetch was successful
+//                        Toast.makeText(
+//                            this, R.string.toast_fetch_finished, Toast.LENGTH_SHORT
+//                        ).show()
+//
+//                        // Close the activity
+//                        finish()
+//                    }
                 } catch (e: IOException) {
 
                     // Let the user know that an error occurred