[feat] Smart Server Selection

app/src/main/java/com/acitelight/aether/service/ApiClient.kt

@@ -3,6 +3,8 @@ package com.acitelight.aether.service
 
 import android.content.Context
 import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import kotlinx.serialization.json.Json
 import okhttp3.CertificatePinner
 import okhttp3.HttpUrl
@@ -12,6 +14,9 @@ import okhttp3.OkHttpClient
 import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
 import java.io.ByteArrayInputStream
+import java.net.HttpURLConnection
+import java.net.InetAddress
+import java.net.URL
 import java.security.KeyStore
 import java.security.cert.Certificate
 import java.security.cert.CertificateFactory
@@ -88,19 +93,43 @@ object ApiClient {
 
     var api: ApiInterface? = null
 
-    fun apply(url: String, crt: String)
-    {
+    suspend fun apply(urls: String, crt: String): String? {
         try {
-            domain = url.toHttpUrlOrNull()?.host !!
+            val urlList = urls.split(";").map { it.trim() }
+
+            var selectedUrl: String? = null
+            for (url in urlList) {
+                val host = url.toHttpUrlOrNull()?.host
+                if (host != null && pingHost(host)) {
+                    selectedUrl = url
+                    break
+                }
+            }
+
+            if (selectedUrl == null) {
+                throw Exception("No reachable URL found")
+            }
+
+            domain = selectedUrl.toHttpUrlOrNull()?.host ?: ""
             cert = crt
-            base = url
+            base = selectedUrl
             api = createRetrofit().create(ApiInterface::class.java)
-        }catch (e: Exception)
-        {
+            return base
+        } catch (e: Exception) {
             api = null
             base = ""
             domain = ""
             cert = ""
+            return null
+        }
+    }
+
+    private suspend fun pingHost(host: String): Boolean = withContext(Dispatchers.IO) {
+        return@withContext try {
+            val address = InetAddress.getByName(host)
+            address.isReachable(200)
+        } catch (e: Exception) {
+            false
         }
     }
 }

app/src/main/java/com/acitelight/aether/viewModel/HomeScreenViewModel.kt

@@ -1,6 +1,7 @@
 package com.acitelight.aether.viewModel
 
 import android.app.Application
+import android.widget.Toast
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.ViewModel
@@ -86,7 +87,7 @@ class HomeScreenViewModel(application: Application) : AndroidViewModel(applicati
             if(u=="" || p=="" || ur=="" || c=="") return@launch
 
             try{
-                ApiClient.apply(ur, c)
+                val usedUrl = ApiClient.apply(ur, c)
 
                 if (MediaManager.token == "null")
                     MediaManager.token = AuthManager.fetchToken(

app/src/main/java/com/acitelight/aether/viewModel/MeScreenViewModel.kt

@@ -76,14 +76,14 @@ class MeScreenViewModel(application: Application) : AndroidViewModel(application
             if (u == "" || c == "" || p == "" || us == "") return@launch
 
             try {
-                ApiClient.apply(u, c)
+                val usedUrl = ApiClient.apply(u, c)
                 MediaManager.token = AuthManager.fetchToken(
                     us,
                     p
                 )!!
 
                 Global.loggedIn = true
-                Toast.makeText(context, "Server Updated", Toast.LENGTH_SHORT).show()
+                Toast.makeText(context, "Server Updated, Used Url: $usedUrl", Toast.LENGTH_SHORT).show()
             } catch (e: Exception) {
                 print(e.message)
                 Toast.makeText(context, "Invalid Account or Server Information", Toast.LENGTH_SHORT).show()