Fix a crash on first launch

husky/app/src/main/java/com/keylesspalace/tusky/network/InstanceSwitchAuthInterceptor.kt

@@ -0,0 +1,59 @@
+/*
+ * Husky -- A Pleroma client for Android
+ *
+ * Copyright (C) 2022  The Husky Developers
+ * Copyright (C) 2017  charlag
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.keylesspalace.tusky.network
+
+import com.keylesspalace.tusky.db.AccountManager
+import okhttp3.HttpUrl
+import okhttp3.Interceptor
+import okhttp3.Response
+
+class InstanceSwitchAuthInterceptor(
+    private val accountManager: AccountManager
+) : Interceptor {
+
+    override fun intercept(chain: Interceptor.Chain): Response {
+        val originalRequest = chain.request()
+
+        return if (originalRequest.url.host == MastodonApi.PLACEHOLDER_DOMAIN) {
+            val activeAccount = accountManager.activeAccount
+            val builder = originalRequest.newBuilder()
+            val instanceHeader = originalRequest.header(MastodonApi.DOMAIN_HEADER)
+            if (instanceHeader != null) {
+                builder.url(swapHost(originalRequest.url, instanceHeader))
+                    .removeHeader(MastodonApi.DOMAIN_HEADER)
+            } else if (activeAccount != null) {
+                builder.url(swapHost(originalRequest.url, activeAccount.domain))
+                    .header(
+                        "Authorization",
+                        String.format("Bearer %s", activeAccount.accessToken)
+                    )
+            }
+
+            chain.proceed(builder.build())
+        } else {
+            chain.proceed(originalRequest)
+        }
+    }
+
+    private fun swapHost(url: HttpUrl, host: String): HttpUrl {
+        return url.newBuilder().host(host).build()
+    }
+}

husky/app/src/main/java/com/keylesspalace/tusky/viewmodel/SplashViewModel.kt

@@ -8,6 +8,7 @@ import com.keylesspalace.tusky.viewmodel.viewstate.SplashViewState
 import com.keylesspalace.tusky.viewmodel.viewstate.SplashViewState.NO_USER
 import com.keylesspalace.tusky.viewmodel.viewstate.SplashViewState.USER
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 
@@ -25,7 +26,10 @@ class SplashViewModel(
 
     private fun loadInstanceSettings() {
         viewModelScope.launch {
-            instanceRepository.getInstanceInfo().collect {
+            instanceRepository.getInstanceInfo()
+                .catch {
+                    _splashViewState.update { NO_USER }
+                }.collect {
                 _splashViewState.update {
                     accountManager.activeAccount?.let { USER } ?: NO_USER
                 }