Internet check

app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+
     <application
             android:allowBackup="true"
             android:name="com.displaynone.ACSSApplication"

app/src/main/java/com/displaynone/acss/MainActivity.kt

@@ -4,72 +4,65 @@ import android.os.Bundle
 import android.util.Log
 import android.view.View
 import androidx.activity.enableEdgeToEdge
-import androidx.annotation.IdRes
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
-import androidx.navigation.NavController
 import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.ui.AppBarConfiguration
 import androidx.navigation.ui.NavigationUI
 import com.displaynone.acss.components.auth.models.user.UserServiceST
+import com.displaynone.acss.components.auth.models.user.repository.dto.UserDTO
 import com.google.android.material.bottomnavigation.BottomNavigationView
 
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
+
-        setContentView(R.layout.activity_main)
+        setupUI()
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+        setupNavigation()
-            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
-            insets
     }
 
-        val navController: NavController = this.setupNavigation()
+    private fun setupNavigation() {
-
-        if(isUserAuthenticated()) { navigateTo(navController, R.id.action_nav_main_to_nav_profile)} else {navigateTo(navController, R.id.action_nav_main_to_nav_auth)}
-    }
-    fun navigateTo(navController: NavController, @IdRes actionId: Int) {
-        navController.navigate(actionId)
-    }
-    private fun setupNavigation(): NavController {
         val navView = findViewById<BottomNavigationView>(R.id.bottom_navigation)
 
-        val toolbar = findViewById<Toolbar>(R.id.toolbar);
+        val toolbar = findViewById<Toolbar>(R.id.toolbar)
         setSupportActionBar(toolbar)
-        val navHostFragment = supportFragmentManager.findFragmentById(R.id.nav_host_fragment) as? NavHostFragment
+        val navHostFragment =
-        if (navHostFragment == null){
+            supportFragmentManager.findFragmentById(R.id.nav_host_fragment) as? NavHostFragment
-            throw IllegalStateException("NavHostFragment is null")
+                ?: throw IllegalStateException("NavHostFragment is null")
-        }
 
         val navController = navHostFragment.navController
-        val appBarConfiguration = AppBarConfiguration(setOf(R.id.nav_auth,R.id.nav_scan, R.id.nav_profile, R.id.nav_admin))
+        val appBarConfiguration = AppBarConfiguration(
+            setOf(R.id.nav_auth, R.id.nav_scan, R.id.nav_profile, R.id.nav_admin)
+        )
         NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration)
         NavigationUI.setupWithNavController(navView, navController)
 
         navController.addOnDestinationChangedListener { _, destination, _ ->
             Log.d("Navigate", "Navigate to " + destination.label)
-            navView.visibility = if (destination.id == R.id.nav_auth) View.GONE else View.VISIBLE
+            navView.visibility = if (destination.id == R.id.nav_auth || destination.id == R.id.nav_init) View.GONE else View.VISIBLE
-            val userDTO = UserServiceST.getInstance().getUserDTO()
+
+            val userDTO = getCachedUser()
             if (userDTO != null) {
                 if (!userDTO.roles.any { it.name == "ROLE_ADMIN" }) navView.menu.findItem(R.id.nav_admin)
                     .setVisible(false) else navView.menu.findItem(R.id.nav_admin).setVisible(true)
             }
         }
-        return navController
     }
 
-    private fun isUserAuthenticated(): Boolean {
+    private fun getCachedUser(): UserDTO? {
-        return UserServiceST.getInstance().hasTokens()
+        return UserServiceST.getInstance().getUserDTO();
-    }
-    private fun checkForAdmin() {
-        val userDTO = UserServiceST.getInstance().getUserDTO()
-        if (userDTO != null){
-            if (userDTO.roles.any {it.name == "ROLE_ADMIN"}) {
-                Log.d("adminlog", "i'm admin")
     }
+
+    private fun setupUI() {
+        enableEdgeToEdge()
+        setContentView(R.layout.activity_main)
+
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
         }
     }
 }

app/src/main/java/com/displaynone/acss/components/main/utils/utils.kt

@@ -0,0 +1,22 @@
+package com.displaynone.acss.components.main.utils
+
+import com.displaynone.acss.config.Constants.serverUrl
+import com.displaynone.acss.config.Network
+import io.ktor.client.request.get
+import io.ktor.client.request.headers
+import io.ktor.http.HttpHeaders
+import io.ktor.http.HttpStatusCode
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+suspend fun pingServer(token: String): Result<Boolean> = withContext(Dispatchers.IO) {
+    runCatching {
+        val result = Network.client.get("$serverUrl/api/ping") {
+            headers {
+                append(HttpHeaders.Authorization, "Bearer $token")
+            }
+        }
+
+        result.status == HttpStatusCode.OK
+    }
+}

app/src/main/java/com/displaynone/acss/ui/init/InitFragment.kt

@@ -0,0 +1,94 @@
+package com.displaynone.acss.ui.init
+
+import android.content.Context
+import android.net.ConnectivityManager
+import android.net.NetworkCapabilities
+import android.os.Bundle
+import android.util.Log
+import android.view.View
+import androidx.fragment.app.Fragment
+import androidx.navigation.NavController
+import androidx.navigation.fragment.findNavController
+import com.displaynone.acss.R
+import com.displaynone.acss.components.auth.models.user.UserServiceST
+import com.displaynone.acss.components.auth.models.user.repository.dto.UserDTO
+import com.displaynone.acss.databinding.FragmentInitBinding
+import com.displaynone.acss.util.navigateTo
+
+class InitFragment : Fragment(R.layout.fragment_init) {
+    private var _binding: FragmentInitBinding? = null
+    private val binding: FragmentInitBinding get() = _binding!!
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        _binding = FragmentInitBinding.bind(view)
+
+        if (!checkInternetConnection()) {
+            handleError(R.string.noInternet)
+            return
+        }
+
+        if (!pingServer()) {
+            handleError(R.string.serverIsUnabailable)
+            return
+        }
+
+        val navController: NavController = findNavController()
+
+        if (!isUserAuthenticated()) {
+            navigateTo(navController, R.id.action_nav_init_to_nav_auth)
+            return
+        }
+
+        val user: UserDTO? = updateUser()
+        if (user == null) {
+            navigateTo(navController, R.id.action_nav_init_to_nav_auth)
+            return
+        }
+
+        navigateTo(navController, R.id.action_nav_init_to_nav_profile)
+    }
+
+    private fun pingServer(): Boolean {
+        return true
+    }
+
+    private fun updateUser(): UserDTO? {
+        return null
+    }
+
+    private fun checkInternetConnection(): Boolean {
+        if (context == null) return false;
+
+        val connectivityManager =
+            context?.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+        val capabilities =
+            connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
+                ?: return false
+
+        if (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
+            Log.i("Internet", "NetworkCapabilities.TRANSPORT_CELLULAR")
+            return true
+        } else if (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) {
+            Log.i("Internet", "NetworkCapabilities.TRANSPORT_WIFI")
+            return true
+        } else if (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET)) {
+            Log.i("Internet", "NetworkCapabilities.TRANSPORT_ETHERNET")
+            return true
+        }
+
+        return false
+    }
+
+    private fun getCachedUser(): UserDTO? {
+        return UserServiceST.getInstance().getUserDTO();
+    }
+
+    private fun isUserAuthenticated(): Boolean {
+        return UserServiceST.getInstance().hasTokens()
+    }
+
+    private fun handleError(string: Int) {
+        binding.error.text = requireContext().getString(string)
+    }
+}

app/src/main/java/com/displaynone/acss/ui/init/InitFragmentViewModel.kt

@@ -0,0 +1,14 @@
+package com.displaynone.acss.ui.init
+
+import androidx.lifecycle.ViewModel
+import com.displaynone.acss.components.auth.models.user.repository.dto.UserDTO
+
+class InitFragmentViewModel: ViewModel()  {
+    private fun pingServer(): Boolean {
+
+    }
+
+    private fun updateUser(): UserDTO? {
+
+    }
+}

app/src/main/res/layout/fragment_init.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools">
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+        <TextView
+            android:id="@+id/error"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:textSize="24sp"
+            android:letterSpacing="0.05"
+            android:background="?android:attr/colorBackground"
+            android:textColor="?attr/colorOnBackground"
+            tools:text="@string/noInternet"
+            tools:ignore="MissingConstraints" />
+    </LinearLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/navigation/nav_graph.xml

@@ -2,7 +2,18 @@
 <navigation xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    app:startDestination="@id/nav_auth">
+    app:startDestination="@id/nav_init">
+    <fragment
+        android:id="@+id/nav_init"
+        android:name="com.displaynone.acss.ui.init.InitFragment"
+        android:label="InitFragment">
+        <action
+            android:id="@+id/action_nav_init_to_nav_profile"
+            app:destination="@id/nav_profile" />
+        <action
+            android:id="@+id/action_nav_init_to_nav_auth"
+            app:destination="@id/nav_auth" />
+    </fragment>
     <fragment
         android:id="@+id/nav_profile"
         android:name="com.displaynone.acss.ui.profile.ProfileFragment"
@@ -21,14 +32,6 @@
             android:id="@+id/action_profileFragment_to_adminFragment"
             app:destination="@id/nav_admin" />
     </fragment>
-
-    <action
-        android:id="@+id/action_nav_main_to_nav_profile"
-        app:destination="@id/nav_profile" />
-    <action
-        android:id="@+id/action_nav_main_to_nav_auth"
-        app:destination="@id/nav_auth" />
-
     <fragment
         android:id="@+id/nav_auth"
         android:name="com.displaynone.acss.ui.auth.AuthFragment"

app/src/main/res/values-en/strings-en.xml

@@ -19,5 +19,5 @@
     <string name="title_profile">Your profile</string>
     <string name="сhange_rights">Change rights using smartphone</string>
     <string name="admin">Admin panel</string>
-
+    <string name="noInternet">Internet disconnected</string>
 </resources>

app/src/main/res/values-ru/strings-ru.xml

@@ -19,5 +19,6 @@
     <string name="administrator_searc_button_search">🔍 Поиск  🔍</string>
     <string name="title_profile">Профиль</string>
     <string name="сhange_rights">Изменить права входа с помощью смартфона</string>
- ><string name="admin">Панель администратора</string>
+    <string name="admin">Панель администратора</string>
+    <string name="noInternet">Интернет соединение потеряно</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -20,6 +20,6 @@
     <string name="сhange_rights">Change rights using smartphone</string>
     <string name="admin">Admin panel</string>
     <string name="profile">Profile</string>
-
+    <string name="noInternet">Internet disconnected</string>
-
+    <string name="serverIsUnabailable">Server is unavailable</string>
 </resources>