handle server timeouts instead of crashing

app/src/main/java/sh/sar/basedbank/ui/home/AccountHistoryFragment.kt

@@ -23,6 +23,7 @@ import kotlinx.coroutines.withContext
 import sh.sar.basedbank.BasedBankApp
 import sh.sar.basedbank.R
 import sh.sar.basedbank.api.models.BankAccount
+import sh.sar.basedbank.api.models.BankServerException
 import sh.sar.basedbank.api.mib.MibContactsClient
 import sh.sar.basedbank.api.models.BankTransaction
 import sh.sar.basedbank.api.mib.TransactionCache
@@ -165,7 +166,17 @@ class AccountHistoryFragment : Fragment() {
         val app = requireActivity().application as BasedBankApp
 
         lifecycleScope.launch {
-            val transactions = fetcher.fetchNextPage(app, pageSize)
+            val transactions = try {
+                fetcher.fetchNextPage(app, pageSize)
+            } catch (e: java.io.IOException) {
+                (activity as? HomeActivity)?.showConnectivityBanner(getString(R.string.connectivity_no_internet))
+                null
+            } catch (e: BankServerException) {
+                (activity as? HomeActivity)?.showConnectivityBanner(getString(R.string.connectivity_server_error, e.bankName))
+                null
+            } catch (_: Exception) {
+                null
+            }
 
             isLoading = false
 
@@ -175,6 +186,12 @@ class AccountHistoryFragment : Fragment() {
                 binding.swipeRefresh.isRefreshing = false
             }
 
+            if (transactions == null) {
+                adapter.showLoadingFooter = false
+                if (allTransactions.isEmpty()) binding.emptyView.visibility = View.VISIBLE
+                return@launch
+            }
+
             if (transactions.isNotEmpty()) {
                 val existingIds = allTransactions.map { it.id }.toHashSet()
                 val newOnes = transactions.filter { it.id !in existingIds }

app/src/main/java/sh/sar/basedbank/ui/home/HomeActivity.kt

@@ -549,7 +549,7 @@ fun applyNavLabelVisibility() {
         autoRefresh(store)
     }
 
-    private fun showConnectivityBanner(message: String) {
+    fun showConnectivityBanner(message: String) {
         binding.connectivityBanner.text = message
         binding.connectivityBanner.visibility = View.VISIBLE
     }