From 214aded22fb7151c5cfcdee1e2de970d869b53d9 Mon Sep 17 00:00:00 2001
From: Bnyro <bnyro@tutanota.com>
Date: Mon, 12 Feb 2024 11:39:20 +0100
Subject: [PATCH] feat: display currently selected instance as grayed out if
 not available

---
 .../github/libretube/api/RetrofitInstance.kt  | 10 +++++-----
 .../github/libretube/api/obj/PipedInstance.kt |  3 ++-
 .../libretube/ui/adapters/InstancesAdapter.kt |  2 ++
 .../ui/preferences/InstanceSettings.kt        | 19 +++++++++++++++----
 4 files changed, 24 insertions(+), 10 deletions(-)

diff --git a/app/src/main/java/com/github/libretube/api/RetrofitInstance.kt b/app/src/main/java/com/github/libretube/api/RetrofitInstance.kt
index 07d2dc5b1..2a6abcc3a 100644
--- a/app/src/main/java/com/github/libretube/api/RetrofitInstance.kt
+++ b/app/src/main/java/com/github/libretube/api/RetrofitInstance.kt
@@ -9,8 +9,8 @@ import retrofit2.create
 
 object RetrofitInstance {
     private const val PIPED_API_URL = "https://pipedapi.kavin.rocks"
-    private val url get() = PreferenceHelper.getString(PreferenceKeys.FETCH_INSTANCE, PIPED_API_URL)
-    private val authUrl
+    val apiUrl get() = PreferenceHelper.getString(PreferenceKeys.FETCH_INSTANCE, PIPED_API_URL)
+    val authUrl
         get() = when (
             PreferenceHelper.getBoolean(
                 PreferenceKeys.AUTH_INSTANCE_TOGGLE,
@@ -21,7 +21,7 @@ object RetrofitInstance {
                 PreferenceKeys.AUTH_INSTANCE,
                 PIPED_API_URL
             )
-            false -> url
+            false -> apiUrl
         }
 
     val lazyMgr = resettableManager()
@@ -30,7 +30,7 @@ object RetrofitInstance {
 
     val api by resettableLazy(lazyMgr) {
         Retrofit.Builder()
-            .baseUrl(url)
+            .baseUrl(apiUrl)
             .callFactory(CronetHelper.callFactory)
             .addConverterFactory(kotlinxConverterFactory)
             .build()
@@ -48,7 +48,7 @@ object RetrofitInstance {
 
     val externalApi by resettableLazy(lazyMgr) {
         Retrofit.Builder()
-            .baseUrl(url)
+            .baseUrl(apiUrl)
             .callFactory(CronetHelper.callFactory)
             .addConverterFactory(kotlinxConverterFactory)
             .build()
diff --git a/app/src/main/java/com/github/libretube/api/obj/PipedInstance.kt b/app/src/main/java/com/github/libretube/api/obj/PipedInstance.kt
index 902d036a7..fa9a0479b 100644
--- a/app/src/main/java/com/github/libretube/api/obj/PipedInstance.kt
+++ b/app/src/main/java/com/github/libretube/api/obj/PipedInstance.kt
@@ -19,5 +19,6 @@ data class PipedInstance(
     @SerialName("registration_disabled") val registrationDisabled: Boolean = false,
     @SerialName("uptime_24h") val uptimeToday: Float? = null,
     @SerialName("uptime_7d") val uptimeWeek: Float? = null,
-    @SerialName("uptime_30d") val uptimeMonth: Float? = null
+    @SerialName("uptime_30d") val uptimeMonth: Float? = null,
+    val isCurrentlyDown: Boolean = false,
 )
diff --git a/app/src/main/java/com/github/libretube/ui/adapters/InstancesAdapter.kt b/app/src/main/java/com/github/libretube/ui/adapters/InstancesAdapter.kt
index 19f8b76a2..f2a424e7c 100644
--- a/app/src/main/java/com/github/libretube/ui/adapters/InstancesAdapter.kt
+++ b/app/src/main/java/com/github/libretube/ui/adapters/InstancesAdapter.kt
@@ -42,6 +42,8 @@ class InstancesAdapter(
             }
             radioButton.text = instanceText
 
+            radioButton.alpha = if (instance.isCurrentlyDown) 0.5f else 1f
+
             radioButton.setOnCheckedChangeListener(null)
             radioButton.isChecked = selectedInstanceIndex == position
             radioButton.setOnCheckedChangeListener { _, isChecked ->
diff --git a/app/src/main/java/com/github/libretube/ui/preferences/InstanceSettings.kt b/app/src/main/java/com/github/libretube/ui/preferences/InstanceSettings.kt
index a46e6abe5..963eb49cd 100644
--- a/app/src/main/java/com/github/libretube/ui/preferences/InstanceSettings.kt
+++ b/app/src/main/java/com/github/libretube/ui/preferences/InstanceSettings.kt
@@ -29,11 +29,13 @@ import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import okhttp3.HttpUrl.Companion.toHttpUrl
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
 
 class InstanceSettings : BasePreferenceFragment() {
     override val titleResourceId: Int = R.string.instance
     private val token get() = PreferenceHelper.getToken()
-    private var instances = listOf<PipedInstance>()
+    private var instances = mutableListOf<PipedInstance>()
     private val authInstanceToggle get() = findPreference<SwitchPreferenceCompat>(PreferenceKeys.AUTH_INSTANCE_TOGGLE)!!
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
@@ -138,9 +140,18 @@ class InstanceSettings : BasePreferenceFragment() {
             Database.customInstanceDao().getAll()
         }.map { PipedInstance(it.name, it.apiUrl) }
 
-        instances = publicInstances
-            .plus(customInstances)
-            .sortedBy { it.name }
+        instances = publicInstances.plus(customInstances).toMutableList()
+
+        // add the currently used instances to the list if they're currently down / not part
+        // of the public instances list
+        for (apiUrl in listOf(RetrofitInstance.apiUrl, RetrofitInstance.authUrl)) {
+            if (instances.none { it.apiUrl == apiUrl }) {
+                val origin = apiUrl.toHttpUrl().host
+                instances.add(PipedInstance(origin, apiUrl, isCurrentlyDown = true))
+            }
+        }
+
+        instances.sortBy { it.name }
 
         // If any preference dialog is visible in this fragment, it's one of the instance selection
         // dialogs. In order to prevent UX issues, we don't update the instances list then.