added repositories, partial transfer of business logic to ViewModel files.

2023-11-21 15:43:03 +04:00 · 2023-11-21 15:43:03 +04:00 · 41536e89d9
commit 41536e89d9
parent a2add02c8d
37 changed files with 544 additions and 270 deletions
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@ -1,7 +1,6 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
    <output url="file://$PROJECT_DIR$/build/classes" />
  </component>
  <component name="ProjectType">
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@ -11,6 +11,7 @@
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.PMULabs"
+        android:name=".NewsPortalApplication"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
--- a/app/src/main/java/com/example/pmulabs/MainActivity.kt
+++ b/app/src/main/java/com/example/pmulabs/MainActivity.kt
@ -4,20 +4,22 @@ import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.viewModels
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.compose.rememberNavController
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.graphs.RootNavigationGraph
 import com.example.pmulabs.ui.theme.PMULabsTheme
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import com.example.pmulabs.viewModels.SearchViewModel
-import com.example.pmulabs.viewModels.SharedViewModel

 class MainActivity : ComponentActivity() {
    private val searchViewModel: SearchViewModel by viewModels()
-    private val sharedViewModel: SharedViewModel by viewModels()
+    private val currentUserViewModel: CurrentUserViewModel by viewModels()
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            PMULabsTheme {
-                RootNavigationGraph(navController = rememberNavController(),searchViewModel, sharedViewModel = sharedViewModel)
+                RootNavigationGraph(navController = rememberNavController(),searchViewModel, currentUserViewModel = viewModel(factory = AppViewModelProvider.Factory))
            }
        }
    }
--- a/app/src/main/java/com/example/pmulabs/NewsPortalApplication.kt
+++ b/app/src/main/java/com/example/pmulabs/NewsPortalApplication.kt
@ -0,0 +1,14 @@
+package com.example.pmulabs
+
+import android.app.Application
+import com.example.pmulabs.room.AppContainer
+import com.example.pmulabs.room.AppDataContainer
+
+class NewsPortalApplication : Application() {
+    lateinit var container: AppContainer
+
+    override fun onCreate() {
+        super.onCreate()
+        container = AppDataContainer(this)
+    }
+}
--- a/app/src/main/java/com/example/pmulabs/designElem/items/ArticleItem.kt
+++ b/app/src/main/java/com/example/pmulabs/designElem/items/ArticleItem.kt
@ -1,5 +1,6 @@
 package com.example.pmulabs.designElem.items

+import android.annotation.SuppressLint
 import android.util.Log
 import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.Image
@ -39,12 +40,11 @@ import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextFieldDefaults
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@ -52,7 +52,6 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.geometry.Size
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.layout.onGloballyPositioned
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.TextStyle
@ -60,60 +59,35 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.unit.toSize
+import androidx.lifecycle.viewmodel.compose.viewModel
 import com.example.pmulabs.R
-import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Article
 import com.example.pmulabs.room.models.Tag
-import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.ArticleItemViewModel
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
 import java.text.SimpleDateFormat

+@SuppressLint("UnrememberedMutableState", "CoroutineCreationDuringComposition")
@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick: () -> Unit,sharedViewModel: SharedViewModel) {
-
-    val context = LocalContext.current
-
+fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick: () -> Unit, articleItemViewModel: ArticleItemViewModel = viewModel(factory = AppViewModelProvider.Factory), currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)) {

+    val coroutineScope = rememberCoroutineScope()
+    articleItemViewModel.setTagList()

    //список тэгов
-    val tags = remember { mutableStateListOf<Tag>() }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).tagDao().getAll().collect { data ->
-                tags.clear()
-                tags.addAll(data)
-            }
-        }
-    }
+    val tags = mutableStateOf<List<Tag>>(articleItemViewModel.tagList)

    //количество комментариев для статьи
-    var countComm by rememberSaveable { mutableStateOf(0) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            countComm = article.id?.let {
-                NewsPortalDatabase.getInstance(context).commentDao().getCountComment(
-                    it
-                )
-            }?.toInt() ?: 0
-        }
+    var countComm = remember{mutableStateOf<Int?>(0)}
+    coroutineScope.launch {
+        countComm.value = articleItemViewModel.getCount(article.id)
    }

    //текущий пользователь
-    val argument = sharedViewModel.argument.value
-    var getUser by remember { mutableStateOf<User?>(null) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserById(argument.toString().toInt()).collect { data ->
-                    getUser=data
-                }
-        }
-    }
+    var getUser by remember { mutableStateOf(currentUserViewModel.user) }

    //формат даты
    val formatter = SimpleDateFormat("dd.MM.YY")
@ -122,7 +96,7 @@ fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick:
    //список названий тэгов
    var tagName=""
    var tagsNames= remember { mutableStateListOf<String>() }
-    tags.forEach{teg ->
+    tags.value.forEach{teg ->
        if(article.tagId == teg.id){
            tagName=teg.title
        }
@ -148,14 +122,6 @@ fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick:
    else
        Icons.Filled.ArrowDropDown

-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).tagDao().getTagById(tagId).collect { data ->
-                selectedText=data.title
-            }
-        }
-    }
-
    //диалоговое окно
    if (openDialog) {
        AlertDialog(
@ -211,11 +177,10 @@ fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick:
                                DropdownMenuItem(
                                    text= {Text(text=label)},
                                    onClick = { selectedText = label
-                                        CoroutineScope(Dispatchers.IO).launch {
-                                            NewsPortalDatabase.getInstance(context).tagDao().getTagByName(selectedText).collect{ tag ->
-                                                tagId=tag?.id.toString().toInt()
-                                            }
-                                        }}
+                                        coroutineScope.launch {
+                                            tagId= articleItemViewModel.getTagByName(selectedText).id!!
+                                        }
+                                    }
                                )
                            }
                        }
@ -282,8 +247,8 @@ fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick:
                                if(tagId!=null) {
                                    article.tagId = tagId
                                }
-                                CoroutineScope(Dispatchers.IO).launch {
-                                    NewsPortalDatabase.getInstance(context).articleDao().update(article)
+                                coroutineScope.launch {
+                                    articleItemViewModel.updateArticle(article)
                                }
                            },
                            modifier = Modifier
@ -392,8 +357,8 @@ fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick:
                                                        y = 0.dp)
                                                    .requiredHeight(30.dp)
                                                    .clickable {
-                                                        CoroutineScope(Dispatchers.IO).launch {
-                                                            NewsPortalDatabase.getInstance(context).articleDao().delete(article)
+                                                        coroutineScope.launch {
+                                                            articleItemViewModel.deleteArticle(article)
                                                        }
                                                    },
                                                imageVector = Icons.Filled.Close,
@ -441,7 +406,7 @@ fun ArticleItem(article: Article, modifier: Modifier = Modifier, onArticleClick:
                                            .requiredWidth(width = 25.dp)
                                            .requiredHeight(height = 22.dp))
                                    Text(
-                                        text = "${countComm}",
+                                        text = "${countComm.value}",
                                        color = Color(0xff423a99),
                                        style = TextStyle(
                                            fontSize = 17.sp),
--- a/app/src/main/java/com/example/pmulabs/designElem/items/CommentItem.kt
+++ b/app/src/main/java/com/example/pmulabs/designElem/items/CommentItem.kt
@ -1,5 +1,6 @@
 package com.example.pmulabs.designElem.items

+import android.annotation.SuppressLint
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
@ -24,57 +25,44 @@ import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextFieldDefaults
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextDecoration
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import com.example.pmulabs.room.database.NewsPortalDatabase
+import androidx.lifecycle.viewmodel.compose.viewModel
 import com.example.pmulabs.room.models.Comment
 import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.CommentItemViewModel
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext

+@SuppressLint("CoroutineCreationDuringComposition", "UnrememberedMutableState")
@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun CommentItem(modifier: Modifier = Modifier,comm : Comment,sharedViewModel: SharedViewModel) {
-    val context = LocalContext.current
-
-    var user by remember { mutableStateOf<User?>(null) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserById(comm.userId).collect { data ->
-                    user=data
-                }
-        }
-    }
-
-    val argument = sharedViewModel.argument.value
-    var getUser by remember { mutableStateOf<User?>(null) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserById(argument.toString().toInt()).collect { data ->
-                    getUser=data
-                }
-        }
-    }
+fun CommentItem(modifier: Modifier = Modifier, comm : Comment,commentItemViewModel: CommentItemViewModel = viewModel(factory = AppViewModelProvider.Factory), currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)) {

+    var getUser by remember { mutableStateOf(currentUserViewModel.user) }
    var openDialog by remember { mutableStateOf(false) }
    var text by remember { mutableStateOf(comm.text) }
+    val coroutineScope = rememberCoroutineScope()
+    commentItemViewModel.getUsersByArticle(comm.articleId)
+    var users by mutableStateOf(commentItemViewModel.userListByArticle)
+    var user by mutableStateOf<User?>(null)
+    for(item in users){
+        if(comm.userId==item.id){
+            user=item
+        }
+    }

    if (openDialog) {
        AlertDialog(
@ -131,8 +119,8 @@ fun CommentItem(modifier: Modifier = Modifier,comm : Comment,sharedViewModel: Sh
                            onClick = {
                                openDialog = false
                                comm.text=text
-                                CoroutineScope(Dispatchers.IO).launch {
-                                    NewsPortalDatabase.getInstance(context).commentDao().update(comm)
+                                coroutineScope.launch {
+                                    commentItemViewModel.updateComment(comm)
                                }
                            },
                            modifier = Modifier
@ -169,7 +157,6 @@ fun CommentItem(modifier: Modifier = Modifier,comm : Comment,sharedViewModel: Sh
                        fontWeight = FontWeight.Bold
                    ),
                )
-
                if(getUser?.id==comm.userId) {
                    Icon(
                        modifier=Modifier
@ -185,8 +172,8 @@ fun CommentItem(modifier: Modifier = Modifier,comm : Comment,sharedViewModel: Sh
                        modifier=Modifier
                            .requiredHeight(20.dp)
                            .clickable {
-                                CoroutineScope(Dispatchers.IO).launch {
-                                    NewsPortalDatabase.getInstance(context).commentDao().delete(comm)
+                                coroutineScope.launch {
+                                    commentItemViewModel.deleteComment(comm)
                                }
                            },
                        imageVector = Icons.Filled.Close,
--- a/app/src/main/java/com/example/pmulabs/designElem/items/TagItem.kt
+++ b/app/src/main/java/com/example/pmulabs/designElem/items/TagItem.kt
@ -26,49 +26,36 @@ import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextFieldDefaults
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import com.example.pmulabs.R
-import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Tag
-import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.CurrentUserViewModel
+import com.example.pmulabs.viewModels.TagItemViewModel
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext

@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun TagItem(teg: Tag, modifier: Modifier = Modifier, onTagClick: () -> Unit,sharedViewModel: SharedViewModel) {
-    val context = LocalContext.current
-
-    val argument = sharedViewModel.argument.value
-    var getUser by remember { mutableStateOf<User?>(null) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserById(argument.toString().toInt()).collect { data ->
-                    getUser = data
-                }
-        }
-    }
+fun TagItem(teg: Tag, modifier: Modifier = Modifier, onTagClick: () -> Unit, viewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory), tagViewModel: TagItemViewModel =viewModel(factory = AppViewModelProvider.Factory)) {

+    var getUser by remember { mutableStateOf(viewModel.user) }
    var openDialog by remember { mutableStateOf(false) }
    var text by remember { mutableStateOf(teg.title) }
+    val coroutineScope = rememberCoroutineScope()

    if (openDialog) {
        AlertDialog(
@ -125,8 +112,8 @@ fun TagItem(teg: Tag, modifier: Modifier = Modifier, onTagClick: () -> Unit,shar
                            onClick = {
                                openDialog = false
                                teg.title = text
-                                CoroutineScope(Dispatchers.IO).launch {
-                                    NewsPortalDatabase.getInstance(context).tagDao().update(teg)
+                                coroutineScope.launch {
+                                    tagViewModel.updateTag(teg)
                                }
                            },
                            modifier = Modifier
@ -207,8 +194,8 @@ fun TagItem(teg: Tag, modifier: Modifier = Modifier, onTagClick: () -> Unit,shar
                        y = 9.dp
                    )
                    .clickable {
-                        CoroutineScope(Dispatchers.IO).launch {
-                            NewsPortalDatabase.getInstance(context).tagDao().delete(teg)
+                        coroutineScope.launch {
+                            tagViewModel.deleteTag(teg)
                        }
                    },
                imageVector = Icons.Filled.Close,
@ -217,4 +204,5 @@ fun TagItem(teg: Tag, modifier: Modifier = Modifier, onTagClick: () -> Unit,shar
            )
        }
    }
-}
+}
+
--- a/app/src/main/java/com/example/pmulabs/graphs/AuthNavGraph.kt
+++ b/app/src/main/java/com/example/pmulabs/graphs/AuthNavGraph.kt
@ -8,9 +8,9 @@ import androidx.navigation.navigation
 import com.example.pmulabs.screensMobile.authScreens.EntryScreen
 import com.example.pmulabs.screensMobile.authScreens.RegisterScreen
 import com.example.pmulabs.screensMobile.authScreens.SplashScreen
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.CurrentUserViewModel

-fun NavGraphBuilder.authNavGraph(navController: NavHostController,sharedViewModel: SharedViewModel){
+fun NavGraphBuilder.authNavGraph(navController: NavHostController, currentUserViewModel: CurrentUserViewModel){
    navigation(
        route=Graph.AUTHENTICATION,
        startDestination = AuthScreen.Splash.route
@ -19,10 +19,10 @@ fun NavGraphBuilder.authNavGraph(navController: NavHostController,sharedViewMode
            SplashScreen(navController = navController, Modifier)
        }
        composable(route=AuthScreen.Entry.route){
-            EntryScreen(navController = navController, Modifier,sharedViewModel)
+            EntryScreen(navController = navController, Modifier,currentUserViewModel)
        }
        composable(route=AuthScreen.Register.route){
-            RegisterScreen(navController = navController, Modifier,sharedViewModel)
+            RegisterScreen(navController = navController, Modifier,currentUserViewModel)
        }
    }
 }
--- a/app/src/main/java/com/example/pmulabs/graphs/HomeNavGraph.kt
+++ b/app/src/main/java/com/example/pmulabs/graphs/HomeNavGraph.kt
@ -2,6 +2,7 @@ package com.example.pmulabs.graphs

 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavHostController
 import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
@ -12,6 +13,7 @@ import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
 import com.example.pmulabs.basecomponents.navigate.CALENDAR_ARGUMENT_DATE
 import com.example.pmulabs.basecomponents.navigate.SEARCHBYTAG_ARGUMENT_KEY
 import com.example.pmulabs.basecomponents.navigate.SEARCH_ARGUMENT_TEXT
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.screensMobile.ArticlePageScreen
 import com.example.pmulabs.screensMobile.CoopScreen
 import com.example.pmulabs.screensMobile.InfoScreen
@ -21,10 +23,10 @@ import com.example.pmulabs.screensMobile.TagsScreen
 import com.example.pmulabs.screensMobile.filterScreens.CalendarScreen
 import com.example.pmulabs.screensMobile.filterScreens.SearchByTagScreen
 import com.example.pmulabs.screensMobile.filterScreens.SearchScreen
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider

@Composable
-fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewModel){
+fun HomeNavGraph(navController: NavHostController, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){
    NavHost(
        navController = navController,
        route = Graph.MAIN,
@ -33,7 +35,7 @@ fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewMod
        composable(
            route=BottomBarScreen.Main.route
            ){
-            MainScreen(navController,Modifier,sharedViewModel)
+            MainScreen(navController,Modifier,currentUserViewModel)
        }
        composable(
            route=BottomBarScreen.SearchByTag.route,
@ -41,7 +43,7 @@ fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewMod
                type= NavType.StringType
            })
        ){
-            SearchByTagScreen(navController,Modifier,sharedViewModel)
+            SearchByTagScreen(navController,Modifier,currentUserViewModel)
        }
        composable(
            route=BottomBarScreen.ArticlePage.route,
@ -49,7 +51,7 @@ fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewMod
                type= NavType.StringType
            })
        ){
-            ArticlePageScreen(navController,Modifier,sharedViewModel)
+            ArticlePageScreen(navController,Modifier,currentUserViewModel)
        }
        composable(
            route=BottomBarScreen.Search.route,
@ -57,7 +59,7 @@ fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewMod
                type= NavType.StringType
            })
        ){
-            SearchScreen(navController,Modifier,sharedViewModel)
+            SearchScreen(navController,Modifier,currentUserViewModel)
        }
        composable(
            route=BottomBarScreen.Calendar.route,
@ -65,10 +67,10 @@ fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewMod
                type= NavType.StringType
            })
        ){
-            CalendarScreen(navController,Modifier,sharedViewModel)
+            CalendarScreen(navController,Modifier,currentUserViewModel)
        }
        composable(route=BottomBarScreen.Profile.route){
-            ProfileScreen(navController,Modifier,sharedViewModel)
+            ProfileScreen(navController,Modifier,currentUserViewModel)
        }
        composable(route=BottomBarScreen.Info.route){
            InfoScreen(navController,Modifier)
@ -77,7 +79,7 @@ fun HomeNavGraph(navController: NavHostController,sharedViewModel: SharedViewMod
            CoopScreen(navController,Modifier)
        }
        composable(route=BottomBarScreen.Categories.route){
-            TagsScreen(navController,Modifier,sharedViewModel)
+            TagsScreen(navController,Modifier,currentUserViewModel)
        }
    }
 }
--- a/app/src/main/java/com/example/pmulabs/graphs/RootNavGraph.kt
+++ b/app/src/main/java/com/example/pmulabs/graphs/RootNavGraph.kt
@ -1,30 +1,32 @@
 package com.example.pmulabs.graphs

 import androidx.compose.runtime.Composable
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavHostController
 import androidx.navigation.NavType
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.navArgument
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.screensMobile.LoadScreen
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import com.example.pmulabs.viewModels.SearchViewModel
-import com.example.pmulabs.viewModels.SharedViewModel

 const val USERID_ARGUMENT="userId"

@Composable
-fun RootNavigationGraph(navController: NavHostController, searchViewModel: SearchViewModel, sharedViewModel: SharedViewModel){
+fun RootNavigationGraph(navController: NavHostController, searchViewModel: SearchViewModel, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){
    NavHost(
        navController=navController,
        route = Graph.ROOT,
        startDestination = Graph.AUTHENTICATION
    ){
-        authNavGraph(navController=navController,sharedViewModel)
+        authNavGraph(navController=navController,currentUserViewModel)
        composable(route=Graph.MAIN,
            arguments = listOf(navArgument(USERID_ARGUMENT){
                type= NavType.StringType
            })){
-            LoadScreen(searchViewModel = searchViewModel, sharedViewModel = sharedViewModel)
+            LoadScreen(searchViewModel = searchViewModel, currentUserViewModel = currentUserViewModel)
        }
    }
 }
--- a/app/src/main/java/com/example/pmulabs/room/AppContainer.kt
+++ b/app/src/main/java/com/example/pmulabs/room/AppContainer.kt
@ -0,0 +1,38 @@
+package com.example.pmulabs.room
+
+import android.content.Context
+import com.example.pmulabs.room.database.NewsPortalDatabase
+import com.example.pmulabs.room.repository.ArticleRepository
+import com.example.pmulabs.room.repository.CommentRepository
+import com.example.pmulabs.room.repository.OfflineArticleRepository
+import com.example.pmulabs.room.repository.OfflineCommentRepository
+import com.example.pmulabs.room.repository.OfflineTagRepository
+import com.example.pmulabs.room.repository.OfflineUserRepository
+import com.example.pmulabs.room.repository.TagRepository
+import com.example.pmulabs.room.repository.UserRepository
+
+interface AppContainer {
+    val userRepository: UserRepository
+    val articleRepository: ArticleRepository
+    val tagRepository: TagRepository
+    val commentRepository: CommentRepository
+}
+
+class AppDataContainer(private val context: Context) : AppContainer {
+    override val userRepository: UserRepository by lazy {
+        OfflineUserRepository(NewsPortalDatabase.getInstance(context).userDao())
+    }
+    override val articleRepository: ArticleRepository by lazy {
+        OfflineArticleRepository(NewsPortalDatabase.getInstance(context).articleDao())
+    }
+    override val tagRepository: TagRepository by lazy {
+        OfflineTagRepository(NewsPortalDatabase.getInstance(context).tagDao())
+    }
+    override val commentRepository: CommentRepository by lazy {
+        OfflineCommentRepository(NewsPortalDatabase.getInstance(context).commentDao())
+    }
+
+    companion object {
+        const val TIMEOUT = 5000L
+    }
+}
--- a/app/src/main/java/com/example/pmulabs/room/dao/ArticleDao.kt
+++ b/app/src/main/java/com/example/pmulabs/room/dao/ArticleDao.kt
@ -10,7 +10,7 @@ import kotlinx.coroutines.flow.Flow

@Dao
 interface ArticleDao {
-    @Query("select * from article ORDER BY publish_date ASC")
+    @Query("select * from article")
    fun getAll(): Flow<List<Article>>

    @Query("select * from article where article.id = :idArticle")
--- a/app/src/main/java/com/example/pmulabs/room/dao/CommentDao.kt
+++ b/app/src/main/java/com/example/pmulabs/room/dao/CommentDao.kt
@ -10,11 +10,11 @@ import kotlinx.coroutines.flow.Flow

@Dao
 interface CommentDao {
-    @Query("select * from comment ORDER BY id DESC")
+    @Query("select * from comment")
    fun getAll(): Flow<List<Comment>>

    @Query("select COUNT(*) from comment WHERE comment.text!='' AND comment.article_id= :idArticle")
-    fun getCountComment(idArticle : Int) : Int
+    fun getCountComment(idArticle : Int?) : Int

    @Insert
    suspend fun insert(comment: Comment)
--- a/app/src/main/java/com/example/pmulabs/room/dao/UserDao.kt
+++ b/app/src/main/java/com/example/pmulabs/room/dao/UserDao.kt
@ -17,7 +17,7 @@ interface UserDao {
    fun getAll(): Flow<List<User>>

    @Query("select * from user where user.id = :idUser")
-    fun getUserById(idUser: Int): Flow<User>
+    fun getUserById(idUser: Int?): Flow<User>

    @Query("select * from comment WHERE comment.text!='' AND comment.user_id= :idUser")
    fun getUserComms(idUser: Int): Flow<List<Comment>>
--- a/app/src/main/java/com/example/pmulabs/room/repository/ArticleRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/ArticleRepository.kt
@ -0,0 +1,12 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.models.Article
+import kotlinx.coroutines.flow.Flow
+
+interface ArticleRepository {
+    suspend fun insertArticle(article: Article)
+    suspend fun updateArticle(article: Article)
+    suspend fun deleteArticle(article: Article)
+    fun getAllArticles(): Flow<List<Article>>
+    fun getArticleById(idArticle: Int): Flow<Article>
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/CommentRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/CommentRepository.kt
@ -0,0 +1,12 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.models.Comment
+import kotlinx.coroutines.flow.Flow
+
+interface CommentRepository {
+    suspend fun insertComment(comment: Comment)
+    suspend fun updateComment(comment: Comment)
+    suspend fun deleteComment(comment: Comment)
+    fun getAllComments(): Flow<List<Comment>>
+    fun getCountComment(idArticle : Int?) : Int
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/OfflineArticleRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/OfflineArticleRepository.kt
@ -0,0 +1,13 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.dao.ArticleDao
+import com.example.pmulabs.room.models.Article
+import kotlinx.coroutines.flow.Flow
+
+class OfflineArticleRepository(private val articleDao: ArticleDao) : ArticleRepository {
+    override suspend fun insertArticle(article: Article) = articleDao.insert(article)
+    override suspend fun updateArticle(article: Article) = articleDao.update(article)
+    override suspend fun deleteArticle(article: Article) = articleDao.delete(article)
+    override fun getAllArticles(): Flow<List<Article>> = articleDao.getAll()
+    override fun getArticleById(idArticle: Int): Flow<Article> = articleDao.getArticleById(idArticle)
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/OfflineCommentRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/OfflineCommentRepository.kt
@ -0,0 +1,13 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.dao.CommentDao
+import com.example.pmulabs.room.models.Comment
+import kotlinx.coroutines.flow.Flow
+
+class OfflineCommentRepository(private val commentDao: CommentDao) : CommentRepository {
+    override suspend fun insertComment(comment: Comment) = commentDao.insert(comment)
+    override suspend fun updateComment(comment: Comment) = commentDao.update(comment)
+    override suspend fun deleteComment(comment: Comment) = commentDao.delete(comment)
+    override fun getAllComments(): Flow<List<Comment>> = commentDao.getAll()
+    override fun getCountComment(idArticle : Int?) : Int = commentDao.getCountComment(idArticle)
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/OfflineTagRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/OfflineTagRepository.kt
@ -0,0 +1,14 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.dao.TagDao
+import com.example.pmulabs.room.models.Tag
+import kotlinx.coroutines.flow.Flow
+
+class OfflineTagRepository(private val tagDao: TagDao) : TagRepository {
+    override suspend fun insertTag(tag: Tag) = tagDao.insert(tag)
+    override suspend fun updateTag(tag: Tag) = tagDao.update(tag)
+    override suspend fun deleteTag(tag: Tag) = tagDao.delete(tag)
+    override fun getAllTags(): Flow<List<Tag>> = tagDao.getAll()
+    override fun getTagById(idTag: Int): Flow<Tag> = tagDao.getTagById(idTag)
+    override fun getTagByName(nameTag: String): Flow<Tag> = tagDao.getTagByName(nameTag)
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/OfflineUserRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/OfflineUserRepository.kt
@ -0,0 +1,19 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.dao.UserDao
+import com.example.pmulabs.room.models.Article
+import com.example.pmulabs.room.models.Comment
+import com.example.pmulabs.room.models.Tag
+import com.example.pmulabs.room.models.User
+import kotlinx.coroutines.flow.Flow
+
+class OfflineUserRepository(private val userDao: UserDao) : UserRepository {
+    override suspend fun insertUser(user: User) = userDao.insert(user)
+    override suspend fun updateUser(user: User) = userDao.update(user)
+    override suspend fun deleteUser(user: User) = userDao.delete(user)
+    override fun getAllUsers(): Flow<List<User>> = userDao.getAll()
+    override fun getUserById(idUser: Int?): Flow<User> = userDao.getUserById(idUser)
+    override fun getUserComms(idUser: Int): Flow<List<Comment>> = userDao.getUserComms(idUser)
+    override fun getUserArticles(idUser: Int): Flow<List<Article>> = userDao.getUserArticles(idUser)
+    override fun getUserTags(idUser: Int): Flow<List<Tag>> = userDao.getUserTags(idUser)
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/TagRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/TagRepository.kt
@ -0,0 +1,13 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.models.Tag
+import kotlinx.coroutines.flow.Flow
+
+interface TagRepository {
+    suspend fun insertTag(tag: Tag)
+    suspend fun updateTag(tag: Tag)
+    suspend fun deleteTag(tag: Tag)
+    fun getAllTags(): Flow<List<Tag>>
+    fun getTagById(idTag: Int): Flow<Tag>
+    fun getTagByName(nameTag: String): Flow<Tag>
+}
--- a/app/src/main/java/com/example/pmulabs/room/repository/UserRepository.kt
+++ b/app/src/main/java/com/example/pmulabs/room/repository/UserRepository.kt
@ -0,0 +1,18 @@
+package com.example.pmulabs.room.repository
+
+import com.example.pmulabs.room.models.Article
+import com.example.pmulabs.room.models.Comment
+import com.example.pmulabs.room.models.Tag
+import com.example.pmulabs.room.models.User
+import kotlinx.coroutines.flow.Flow
+
+interface UserRepository {
+    suspend fun insertUser(user: User)
+    suspend fun updateUser(user: User)
+    suspend fun deleteUser(user: User)
+    fun getAllUsers(): Flow<List<User>>
+    fun getUserById(idUser: Int?): Flow<User>
+    fun getUserComms(idUser: Int): Flow<List<Comment>>
+    fun getUserArticles(idUser: Int): Flow<List<Article>>
+    fun getUserTags(idUser: Int): Flow<List<Tag>>
+}
--- a/app/src/main/java/com/example/pmulabs/screensMobile/ArticlePageScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/ArticlePageScreen.kt
@ -42,6 +42,7 @@ import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.basecomponents.navigate.ARTICLE_ARGUMENT_KEY
 import com.example.pmulabs.designElem.elem.BackButton
@ -51,7 +52,8 @@ import com.example.pmulabs.room.models.Article
 import com.example.pmulabs.room.models.Comment
 import com.example.pmulabs.room.models.Tag
 import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@ -61,8 +63,8 @@ import java.util.Date

@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun ArticlePageScreen(navController: NavController,modifier: Modifier = Modifier,sharedViewModel: SharedViewModel) {
-    val argument = sharedViewModel.argument.value
+fun ArticlePageScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
+    val argument = currentUserViewModel.argument.value
    val context = LocalContext.current

    var id=navController.currentBackStackEntry?.arguments?.getString(ARTICLE_ARGUMENT_KEY).toString()
@ -260,7 +262,7 @@ fun ArticlePageScreen(navController: NavController,modifier: Modifier = Modifier
                        modifier = Modifier
                            .border(BorderStroke(3.dp, Color(0xff423a99))), color = Color(0xff423a99)
                    )
-                    CommentItem(comm = comm, sharedViewModel = sharedViewModel)
+                    CommentItem(comm = comm, currentUserViewModel = currentUserViewModel)
                }
            }

--- a/app/src/main/java/com/example/pmulabs/screensMobile/MainScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/MainScreen.kt
@ -33,6 +33,7 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.rememberNavController
@ -41,12 +42,13 @@ import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
 import com.example.pmulabs.basecomponents.navigate.SearchAppBar
 import com.example.pmulabs.basecomponents.navigate.TopBar
 import com.example.pmulabs.designElem.items.ArticleItem
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.graphs.HomeNavGraph
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Article
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import com.example.pmulabs.viewModels.SearchViewModel
 import com.example.pmulabs.viewModels.SearchWidget
-import com.example.pmulabs.viewModels.SharedViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.text.SimpleDateFormat
@ -54,7 +56,7 @@ import java.util.Calendar
 import java.util.Date

@Composable
-fun MainScreen(navController: NavController, modifier: Modifier = Modifier,sharedViewModel: SharedViewModel){
+fun MainScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){

    val context = LocalContext.current
    val articles = remember { mutableStateListOf<Article>() }
@ -73,7 +75,7 @@ fun MainScreen(navController: NavController, modifier: Modifier = Modifier,share
        contentPadding = PaddingValues(top=75.dp, bottom = 70.dp, start = 10.dp,end=10.dp),
        verticalArrangement = Arrangement.spacedBy(15.dp)){
        items(items = articles){ article ->
-                ArticleItem(article = article, sharedViewModel = sharedViewModel, onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))})
+                ArticleItem(article = article, currentUserViewModel = currentUserViewModel, onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))})
        }
    }
 }
@ -81,7 +83,7 @@ fun MainScreen(navController: NavController, modifier: Modifier = Modifier,share
@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun LoadScreen(navController: NavHostController=rememberNavController(), searchViewModel: SearchViewModel, sharedViewModel: SharedViewModel){
+fun LoadScreen(navController: NavHostController=rememberNavController(), searchViewModel: SearchViewModel, currentUserViewModel: CurrentUserViewModel){

    val searchWidgetState by searchViewModel.searchWidgetState
    val searchTextState by searchViewModel.searchTextState
@ -244,7 +246,7 @@ fun LoadScreen(navController: NavHostController=rememberNavController(), searchV
    ) {
        Modifier
            .padding(it)
-        HomeNavGraph(navController = navController,sharedViewModel)
+        HomeNavGraph(navController = navController,currentUserViewModel)
    }
 }

--- a/app/src/main/java/com/example/pmulabs/screensMobile/ProfileScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/ProfileScreen.kt
@ -60,6 +60,7 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.unit.toSize
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.R
 import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
@ -69,8 +70,8 @@ import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Article
 import com.example.pmulabs.room.models.Comment
 import com.example.pmulabs.room.models.Tag
-import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@ -79,34 +80,20 @@ import java.util.Date

@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun ProfileScreen(navController: NavController, modifier: Modifier = Modifier,sharedViewModel: SharedViewModel) {
-    val argument = sharedViewModel.argument.value
-
+fun ProfileScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)) {
    val context = LocalContext.current
-
+    var getUser by remember { mutableStateOf(currentUserViewModel.user) }
    var openDialogUser by remember { mutableStateOf(false) }
-    var email by remember { mutableStateOf("") }
-    var password by remember { mutableStateOf("") }
-    var nickname by remember { mutableStateOf("") }
+    var email by remember { mutableStateOf(getUser?.email) }
+    var password by remember { mutableStateOf(getUser?.password) }
+    var nickname by remember { mutableStateOf(getUser?.nickname) }

-    var getUser by remember { mutableStateOf<User?>(null) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserById(argument.toString().toInt()).collect { data ->
-                    getUser = data
-                    email=data.email
-                    password=data.password
-                    nickname=data.nickname
-            }
-        }
-    }

    val getComms = remember { mutableStateListOf<Comment>() }
    LaunchedEffect(Unit) {
        withContext(Dispatchers.IO) {
            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserComms(argument.toString().toInt()).collect { data ->
+                .getUserComms(getUser?.id.toString().toInt()).collect { data ->
                getComms.clear()
                getComms.addAll(data)
            }
@ -117,7 +104,7 @@ fun ProfileScreen(navController: NavController, modifier: Modifier = Modifier,sh
    LaunchedEffect(Unit) {
        withContext(Dispatchers.IO) {
            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserArticles(argument.toString().toInt()).collect { data ->
+                .getUserArticles(getUser?.id.toString().toInt()).collect { data ->
                    getArticles.clear()
                    getArticles.addAll(data)
                }
@ -128,7 +115,7 @@ fun ProfileScreen(navController: NavController, modifier: Modifier = Modifier,sh
    LaunchedEffect(Unit) {
        withContext(Dispatchers.IO) {
            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserTags(argument.toString().toInt()).collect { data ->
+                .getUserTags(getUser?.id.toString().toInt()).collect { data ->
                    getTags.clear()
                    getTags.addAll(data)
                }
@ -332,49 +319,53 @@ fun ProfileScreen(navController: NavController, modifier: Modifier = Modifier,sh
                            fontSize = 20.sp,
                        ),
                    )
-                    ValidateEmail(email, {email=it} )
-                    OutlinedTextField(
-                        value = password,
-                        onValueChange = {
-                            password=it
-                        },
-                        colors = TextFieldDefaults.textFieldColors(
-                            containerColor = Color.White,
-                            focusedIndicatorColor = Color(0xff423a99),
-                            focusedLabelColor = Color(0xff423a99),
-                            unfocusedIndicatorColor = Color(0xff423a99),
-                            unfocusedLabelColor = Color(0xff423a99)
-                        ),
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .wrapContentHeight()
-                            .padding(10.dp),
-                        label = { Text("Password") },
-                        placeholder = { Text("Write password...") },
-                        minLines = 1,
-                        maxLines = 1,
-                    )
-                    OutlinedTextField(
-                        value = nickname,
-                        onValueChange = {
-                            nickname=it
-                        },
-                        colors = TextFieldDefaults.textFieldColors(
-                            containerColor = Color.White,
-                            focusedIndicatorColor = Color(0xff423a99),
-                            focusedLabelColor = Color(0xff423a99),
-                            unfocusedIndicatorColor = Color(0xff423a99),
-                            unfocusedLabelColor = Color(0xff423a99)
-                        ),
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .wrapContentHeight()
-                            .padding(10.dp),
-                        label = { Text("Nickname") },
-                        placeholder = { Text("Write nickname...") },
-                        minLines = 1,
-                        maxLines = 1,
-                    )
+                    email?.let { ValidateEmail(it, {email=it} ) }
+                    password?.let {
+                        OutlinedTextField(
+                            value = it,
+                            onValueChange = {
+                                password=it
+                            },
+                            colors = TextFieldDefaults.textFieldColors(
+                                containerColor = Color.White,
+                                focusedIndicatorColor = Color(0xff423a99),
+                                focusedLabelColor = Color(0xff423a99),
+                                unfocusedIndicatorColor = Color(0xff423a99),
+                                unfocusedLabelColor = Color(0xff423a99)
+                            ),
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .wrapContentHeight()
+                                .padding(10.dp),
+                            label = { Text("Password") },
+                            placeholder = { Text("Write password...") },
+                            minLines = 1,
+                            maxLines = 1,
+                        )
+                    }
+                    nickname?.let {
+                        OutlinedTextField(
+                            value = it,
+                            onValueChange = {
+                                nickname=it
+                            },
+                            colors = TextFieldDefaults.textFieldColors(
+                                containerColor = Color.White,
+                                focusedIndicatorColor = Color(0xff423a99),
+                                focusedLabelColor = Color(0xff423a99),
+                                unfocusedIndicatorColor = Color(0xff423a99),
+                                unfocusedLabelColor = Color(0xff423a99)
+                            ),
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .wrapContentHeight()
+                                .padding(10.dp),
+                            label = { Text("Nickname") },
+                            placeholder = { Text("Write nickname...") },
+                            minLines = 1,
+                            maxLines = 1,
+                        )
+                    }
                    Row(
                        modifier = Modifier.padding(all = 8.dp),
                        horizontalArrangement = Arrangement.Center
@ -388,10 +379,13 @@ fun ProfileScreen(navController: NavController, modifier: Modifier = Modifier,sh
                            ),
                            onClick = {
                                openDialogUser = false
-                                if(password.isNotEmpty() && email.isNotEmpty() && isValidEmail(email) && nickname.isNotEmpty()) {
-                                    getUser?.password=password
-                                    getUser?.email=email
-                                    getUser?.nickname=nickname
+                                if(password?.isNotEmpty() == true && email?.isNotEmpty() == true && isValidEmail(
+                                        email!!
+                                    ) && nickname?.isNotEmpty() == true
+                                ) {
+                                    getUser?.password= password as String
+                                    getUser?.email= email as String
+                                    getUser?.nickname= nickname as String
                                    CoroutineScope(Dispatchers.IO).launch {
                                        getUser?.let {
                                            NewsPortalDatabase.getInstance(context).userDao()
--- a/app/src/main/java/com/example/pmulabs/screensMobile/TagsScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/TagsScreen.kt
@ -41,13 +41,14 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
 import com.example.pmulabs.designElem.items.TagItem
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Tag
-import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@ -55,7 +56,7 @@ import kotlinx.coroutines.withContext

@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun TagsScreen(navController: NavController, modifier: Modifier = Modifier,sharedViewModel: SharedViewModel){
+fun TagsScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){

    val context = LocalContext.current
    val tags = remember { mutableStateListOf<Tag>() }
@ -68,17 +69,7 @@ fun TagsScreen(navController: NavController, modifier: Modifier = Modifier,share
        }
    }

-    val argument = sharedViewModel.argument.value
-
-    var getUser by remember { mutableStateOf<User?>(null) }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            NewsPortalDatabase.getInstance(context).userDao()
-                .getUserById(argument.toString().toInt()).collect { data ->
-                    getUser=data
-                }
-        }
-    }
+    var getUser by remember { mutableStateOf(currentUserViewModel.user) }

    var openDialog by remember { mutableStateOf(false) }
    var text by remember { mutableStateOf("") }
@ -198,7 +189,7 @@ fun TagsScreen(navController: NavController, modifier: Modifier = Modifier,share
        items(items = tags){ tag ->
            TagItem(
                teg = tag,
-                sharedViewModel = sharedViewModel,
+                viewModel = currentUserViewModel,
                onTagClick = {navController.navigate(BottomBarScreen.SearchByTag.passId(tag.id.toString()))}
                )
        }
--- a/app/src/main/java/com/example/pmulabs/screensMobile/authScreens/EntryScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/authScreens/EntryScreen.kt
@ -49,6 +49,7 @@ import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.designElem.elem.ValidateEmail
 import com.example.pmulabs.designElem.elem.isValidEmail
@ -59,13 +60,14 @@ import com.example.pmulabs.graphs.AuthScreen
 import com.example.pmulabs.graphs.Graph
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext

@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun EntryScreen(navController: NavController,modifier: Modifier = Modifier, sharedViewModel: SharedViewModel) {
+fun EntryScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)) {

    var emailValue by rememberSaveable { mutableStateOf("") }
    var passwordValue by rememberSaveable { mutableStateOf("") }
@ -79,7 +81,7 @@ fun EntryScreen(navController: NavController,modifier: Modifier = Modifier, shar
            }
        }
    }
-    val argument = sharedViewModel.argument.value
+    val argument = currentUserViewModel.argument.value

    var passwordVisibility by rememberSaveable { mutableStateOf(false) }
    val emailRegex = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+".toRegex()
@ -205,7 +207,7 @@ fun EntryScreen(navController: NavController,modifier: Modifier = Modifier, shar
                            if (passwordValue.isNotEmpty() && isValidEmail(emailValue)) {
                                users.forEach { user ->
                                    if (user.password == passwordValue && user.email == emailValue) {
-                                        sharedViewModel.setArgument(user.id.toString())
+                                        currentUserViewModel.setArgument(user.id.toString())
                                        navController.navigate(route = Graph.passUserId(user.id.toString())) {
                                        }
                                    }
--- a/app/src/main/java/com/example/pmulabs/screensMobile/authScreens/RegisterScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/authScreens/RegisterScreen.kt
@ -50,9 +50,11 @@ import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.designElem.elem.ValidateEmail
 import com.example.pmulabs.designElem.elem.isValidEmail
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.designElem.statDesign.LeftCircles
 import com.example.pmulabs.designElem.statDesign.LogoMobile
 import com.example.pmulabs.designElem.statDesign.RightCircles
@ -60,7 +62,7 @@ import com.example.pmulabs.graphs.AuthScreen
 import com.example.pmulabs.graphs.Graph
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.User
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@ -68,7 +70,7 @@ import kotlinx.coroutines.withContext

@OptIn(ExperimentalMaterial3Api::class)
@Composable
-fun RegisterScreen(navController: NavController,modifier: Modifier = Modifier,sharedViewModel: SharedViewModel) {
+fun RegisterScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)) {

    var emailValue by rememberSaveable { mutableStateOf("") }
    var passwordValue by rememberSaveable { mutableStateOf("") }
@ -242,7 +244,7 @@ fun RegisterScreen(navController: NavController,modifier: Modifier = Modifier,sh
                                                data.forEach { user ->
                                                    if (user.password == passwordValue && user.email == emailValue) {
                                                        withContext(Dispatchers.Main) {
-                                                            sharedViewModel.setArgument(user.id.toString())
+                                                            currentUserViewModel.setArgument(user.id.toString())
                                                            navController.navigate(
                                                                route = Graph.passUserId(
                                                                    user.id.toString()
--- a/app/src/main/java/com/example/pmulabs/screensMobile/filterScreens/CalendarScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/filterScreens/CalendarScreen.kt
@ -16,20 +16,22 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
 import com.example.pmulabs.basecomponents.navigate.CALENDAR_ARGUMENT_DATE
 import com.example.pmulabs.designElem.elem.BackButton
 import com.example.pmulabs.designElem.items.ArticleItem
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Article
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import java.text.SimpleDateFormat

@Composable
-fun  CalendarScreen(navController: NavController, modifier: Modifier = Modifier,sharedViewModel: SharedViewModel){
+fun  CalendarScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){
    val context = LocalContext.current
    val articles = remember { mutableStateListOf<Article>() }
    LaunchedEffect(Unit) {
@ -59,7 +61,7 @@ fun  CalendarScreen(navController: NavController, modifier: Modifier = Modifier,
            if(publishDate==date) {
                ArticleItem(
                    article = article,
-                    sharedViewModel=sharedViewModel,
+                    currentUserViewModel=currentUserViewModel,
                    onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))}
                )
            }
--- a/app/src/main/java/com/example/pmulabs/screensMobile/filterScreens/SearchByTagScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/filterScreens/SearchByTagScreen.kt
@ -16,19 +16,21 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
 import com.example.pmulabs.basecomponents.navigate.SEARCHBYTAG_ARGUMENT_KEY
 import com.example.pmulabs.designElem.elem.BackButton
 import com.example.pmulabs.designElem.items.ArticleItem
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Article
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext

@Composable
-fun SearchByTagScreen(navController: NavController, modifier: Modifier = Modifier,sharedViewModel: SharedViewModel){
+fun SearchByTagScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){
    val context = LocalContext.current
    val articles = remember { mutableStateListOf<Article>() }
    LaunchedEffect(Unit) {
@ -53,7 +55,7 @@ fun SearchByTagScreen(navController: NavController, modifier: Modifier = Modifie
        }
        items(items = articles){ article ->
            if(article.tagId.toString()==id) {
-                ArticleItem(article = article, sharedViewModel = sharedViewModel, onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))})
+                ArticleItem(article = article, currentUserViewModel = currentUserViewModel, onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))})
            }
        }
    }
--- a/app/src/main/java/com/example/pmulabs/screensMobile/filterScreens/SearchScreen.kt
+++ b/app/src/main/java/com/example/pmulabs/screensMobile/filterScreens/SearchScreen.kt
@ -16,19 +16,21 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.pmulabs.basecomponents.navigate.BottomBarScreen
 import com.example.pmulabs.basecomponents.navigate.SEARCH_ARGUMENT_TEXT
 import com.example.pmulabs.designElem.elem.BackButton
 import com.example.pmulabs.designElem.items.ArticleItem
+import com.example.pmulabs.viewModels.CurrentUserViewModel
 import com.example.pmulabs.room.database.NewsPortalDatabase
 import com.example.pmulabs.room.models.Article
-import com.example.pmulabs.viewModels.SharedViewModel
+import com.example.pmulabs.viewModels.AppViewModelProvider
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext

@Composable
-fun SearchScreen(navController: NavController, modifier: Modifier = Modifier,sharedViewModel: SharedViewModel){
+fun SearchScreen(navController: NavController, modifier: Modifier = Modifier, currentUserViewModel: CurrentUserViewModel = viewModel(factory = AppViewModelProvider.Factory)){
    val context = LocalContext.current
    val articles = remember { mutableStateListOf<Article>() }
    LaunchedEffect(Unit) {
@ -54,7 +56,7 @@ fun SearchScreen(navController: NavController, modifier: Modifier = Modifier,sha
        }
        items(items = articles){ article ->
            if(article.title.contains(text)) {
-                ArticleItem(article = article,sharedViewModel=sharedViewModel,onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))})
+                ArticleItem(article = article,currentUserViewModel=currentUserViewModel,onArticleClick = {navController.navigate(BottomBarScreen.ArticlePage.passId(article.id.toString()))})
            }
        }
    }
--- a/app/src/main/java/com/example/pmulabs/viewModels/AppViewModelProvider.kt
+++ b/app/src/main/java/com/example/pmulabs/viewModels/AppViewModelProvider.kt
@ -0,0 +1,27 @@
+package com.example.pmulabs.viewModels
+
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.viewmodel.CreationExtras
+import androidx.lifecycle.viewmodel.initializer
+import androidx.lifecycle.viewmodel.viewModelFactory
+import com.example.pmulabs.NewsPortalApplication
+
+object AppViewModelProvider {
+    val Factory = viewModelFactory {
+        initializer {
+            CurrentUserViewModel(newsPortalApplication().container.userRepository)
+        }
+        initializer {
+            TagItemViewModel(newsPortalApplication().container.tagRepository)
+        }
+        initializer {
+            CommentItemViewModel(newsPortalApplication().container.userRepository,newsPortalApplication().container.commentRepository)
+        }
+        initializer {
+            ArticleItemViewModel(newsPortalApplication().container.tagRepository,newsPortalApplication().container.commentRepository,newsPortalApplication().container.articleRepository)
+        }
+    }
+}
+
+fun CreationExtras.newsPortalApplication(): NewsPortalApplication =
+    (this[ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY] as NewsPortalApplication)
--- a/app/src/main/java/com/example/pmulabs/viewModels/ArticleItemViewModel.kt
+++ b/app/src/main/java/com/example/pmulabs/viewModels/ArticleItemViewModel.kt
@ -0,0 +1,46 @@
+package com.example.pmulabs.viewModels
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.pmulabs.room.models.Article
+import com.example.pmulabs.room.models.Tag
+import com.example.pmulabs.room.repository.ArticleRepository
+import com.example.pmulabs.room.repository.CommentRepository
+import com.example.pmulabs.room.repository.TagRepository
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+class ArticleItemViewModel(
+    private val tagRepository: TagRepository,
+    private val commentRepository: CommentRepository,
+    private val articleRepository: ArticleRepository
+) : ViewModel() {
+    var tagList by mutableStateOf<List<Tag>>(emptyList())
+    fun setTagList() {
+        viewModelScope.launch {
+            tagList=tagRepository.getAllTags().first()
+        }
+    }
+
+    suspend fun updateArticle(article: Article) {
+        articleRepository.updateArticle(article)
+    }
+
+    suspend fun deleteArticle(article: Article) {
+        articleRepository.deleteArticle(article)
+    }
+
+    suspend fun getTagByName(name: String) : Tag {
+        return tagRepository.getTagByName(name).first()
+    }
+
+    suspend fun getCount(articleId: Int?): Int = withContext(Dispatchers.IO) {
+        commentRepository.getCountComment(articleId)
+    }
+
+}
--- a/app/src/main/java/com/example/pmulabs/viewModels/CommentItemViewModel.kt
+++ b/app/src/main/java/com/example/pmulabs/viewModels/CommentItemViewModel.kt
@ -0,0 +1,57 @@
+package com.example.pmulabs.viewModels
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.pmulabs.room.models.Comment
+import com.example.pmulabs.room.models.User
+import com.example.pmulabs.room.repository.CommentRepository
+import com.example.pmulabs.room.repository.UserRepository
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+class CommentItemViewModel(
+    private val userRepository: UserRepository,
+    private val commentRepository: CommentRepository
+) : ViewModel() {
+    suspend fun updateComment(comment: Comment) {
+        commentRepository.updateComment(comment)
+    }
+
+    var commentList by mutableStateOf<Flow<List<Comment>>>(commentRepository.getAllComments())
+    var commListByArticle by mutableStateOf<List<Comment>>(emptyList())
+    var userListByArticle by mutableStateOf<List<User>>(emptyList())
+
+    suspend fun getCount(articleId: Int): Int = withContext(Dispatchers.IO) {
+        commentRepository.getCountComment(articleId)
+    }
+
+    fun getUsersByArticle(articleId: Int) {
+        viewModelScope.launch {
+            val count=getCount(articleId)
+            for(item in commentList.first()){
+                if(item.articleId==articleId){
+                    commListByArticle+=item
+                }
+                if(commListByArticle.size>count){
+                    commListByArticle -= commListByArticle[commListByArticle.size-1]
+                }
+            }
+            for(item in commListByArticle){
+                userListByArticle+=userRepository.getUserById(item.userId).first()
+                if(userListByArticle.size>count){
+                    userListByArticle -= userListByArticle[userListByArticle.size-1]
+                }
+            }
+        }
+    }
+
+    suspend fun deleteComment(comment: Comment) {
+        commentRepository.deleteComment(comment)
+    }
+}
--- a/app/src/main/java/com/example/pmulabs/viewModels/CurrentUserViewModel.kt
+++ b/app/src/main/java/com/example/pmulabs/viewModels/CurrentUserViewModel.kt
@ -0,0 +1,28 @@
+package com.example.pmulabs.viewModels
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.pmulabs.room.models.User
+import com.example.pmulabs.room.repository.UserRepository
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+
+class CurrentUserViewModel(private val userRepository: UserRepository) : ViewModel(){
+    val argument = mutableStateOf<String?>(null)
+    private val userid = mutableStateOf<Int?>(null)
+    var user by mutableStateOf<User?>(null)
+
+    fun setArgument(arg: String) {
+        argument.value = arg
+        userid.value = arg.toInt()
+        viewModelScope.launch {
+            user = userRepository.getUserById(userid.value)
+                .filterNotNull()
+                .first()
+        }
+    }
+}
--- a/app/src/main/java/com/example/pmulabs/viewModels/SharedViewModel.kt
+++ b/app/src/main/java/com/example/pmulabs/viewModels/SharedViewModel.kt
@ -1,12 +0,0 @@
-package com.example.pmulabs.viewModels
-
-import androidx.compose.runtime.mutableStateOf
-import androidx.lifecycle.ViewModel
-
-class SharedViewModel  : ViewModel() {
-    val argument = mutableStateOf<String?>(null)
-
-    fun setArgument(arg: String) {
-        argument.value = arg
-    }
-}
--- a/app/src/main/java/com/example/pmulabs/viewModels/TagItemViewModel.kt
+++ b/app/src/main/java/com/example/pmulabs/viewModels/TagItemViewModel.kt
@ -0,0 +1,17 @@
+package com.example.pmulabs.viewModels
+
+import androidx.lifecycle.ViewModel
+import com.example.pmulabs.room.models.Tag
+import com.example.pmulabs.room.repository.TagRepository
+
+class TagItemViewModel(
+    private val tagRepository: TagRepository
+) : ViewModel() {
+    suspend fun updateTag(tag: Tag) {
+        tagRepository.updateTag(tag)
+    }
+
+    suspend fun deleteTag(tag: Tag) {
+        tagRepository.deleteTag(tag)
+    }
+}