Profile done

app/src/main/java/ru/myitschool/work/ui/RootActivity.kt

@@ -21,36 +21,6 @@ class RootActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_root)
-        val navHostFragment = supportFragmentManager
-            .findFragmentById(R.id.nav_host_fragment) as NavHostFragment?
 
-        if (navHostFragment != null) {
-            val navController = navHostFragment.navController
-            navController.graph = navController.createGraph(
-                startDestination = LoginDestination
-            ) {
-                fragment<LoginFragment, LoginDestination>()
-                fragment<QrScanFragment, QrScanDestination>()
-            }
-        }
-
-        onBackPressedDispatcher.addCallback(
-            this,
-            object : OnBackPressedCallback(true) {
-                override fun handleOnBackPressed() {
-                    onSupportNavigateUp()
-                }
-            }
-        )
-    }
-
-    override fun onSupportNavigateUp(): Boolean {
-        val navController = findNavController(R.id.nav_host_fragment)
-        val popBackResult = if (navController.previousBackStackEntry != null) {
-            navController.popBackStack()
-        } else {
-            false
-        }
-        return popBackResult || super.onSupportNavigateUp()
     }
 }

app/src/main/java/ru/myitschool/work/ui/profile/UserFragment.java

@@ -1,8 +1,71 @@
 package ru.myitschool.work.ui.profile;
 
+import android.os.Bundle;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.squareup.picasso.Picasso;
+
+import ru.myitschool.work.R;
+import ru.myitschool.work.databinding.FragmentUserBinding;
+import ru.myitschool.work.domain.entities.UserEntity;
+import ru.myitschool.work.utils.Utils;
 
 public class UserFragment extends Fragment {
 
+    private static final String KEY_ID = "id";
 
+    private FragmentUserBinding binding;
+    private UserViewModel viewModel;
+
+    public UserFragment() {
+        super(R.layout.fragment_user);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        binding = FragmentUserBinding.bind(view);
+
+        viewModel = new ViewModelProvider(this).get(UserViewModel.class);
+        viewModel.stateLiveData.observe(getViewLifecycleOwner(), state -> {
+            UserEntity entity = state.getItem();
+            if (entity == null) {
+                return;
+            } else {
+                binding.photo.setVisibility(Utils.visibleOrGone(entity.getPhoto() != null));
+                binding.position.setVisibility(Utils.visibleOrGone(entity.getPosition() != null));
+                binding.lastEntry.setVisibility(Utils.visibleOrGone(entity.getLast_visit() != null));
+
+                binding.fullname.setText(entity.getName());
+                binding.position.setText(entity.getPosition());
+                binding.lastEntry.setText(entity.getLast_visit());
+
+                if (entity.getPhoto() != null) {
+                    Picasso.get().load(entity.getPhoto()).into(binding.photo);
+                }
+            }
+        });
+
+        String id = getArguments() != null ? getArguments().getString(KEY_ID) : null;
+        if (id == null) throw new IllegalStateException("ID is null");
+        viewModel.update(id);
+    }
+
+
+    @Override
+    public void onDestroyView() {
+        binding = null;
+        super.onDestroyView();
+    }
+
+    public static Bundle getBundle(@NonNull String id) {
+        Bundle bundle = new Bundle();
+        bundle.putString(KEY_ID, id);
+        return bundle;
+    }
 }

app/src/main/java/ru/myitschool/work/ui/profile/UserViewModel.java

@@ -1,6 +1,73 @@
 package ru.myitschool.work.ui.profile;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 
+import ru.myitschool.work.data.UserRepositoryImplementation;
+import ru.myitschool.work.domain.entities.Status;
+import ru.myitschool.work.domain.entities.UserEntity;
+import ru.myitschool.work.domain.user.GetUserByIdUseCase;
+
 public class UserViewModel extends ViewModel {
+
+    private final MutableLiveData<State> mutableStateLiveData = new MutableLiveData<State>();
+    public final LiveData<State> stateLiveData = mutableStateLiveData;
+
+    public final GetUserByIdUseCase getUserByIdUseCase = new GetUserByIdUseCase(
+            UserRepositoryImplementation.getInstance()
+    );
+
+
+
+    public UserViewModel(String id) {
+        update(id);
+    }
+
+    public void update(@NonNull String id) {
+        mutableStateLiveData.setValue(new State(null, null, true));
+        getUserByIdUseCase.execute(id, status -> {
+            mutableStateLiveData.postValue(fromStatus(status));
+        });
+    }
+
+    private State fromStatus(Status<UserEntity> status) {
+        return new State(
+                status.getErrors() != null ? status.getErrors().getLocalizedMessage(): null,
+                status.getValue(),
+                false
+        );
+    }
+
+    public class State {
+        @Nullable
+        private final String errorMessage;
+
+        @Nullable
+        private final UserEntity item;
+
+        private final boolean isLoading;
+
+        @Nullable
+        public String getErrorMessage() {
+            return errorMessage;
+        }
+
+        @Nullable
+        public UserEntity getItem() {
+            return item;
+        }
+
+        public boolean isLoading() {
+            return isLoading;
+        }
+
+        public State(@Nullable String errorMessage, @Nullable UserEntity item, boolean isLoading) {
+            this.errorMessage = errorMessage;
+            this.item = item;
+            this.isLoading = isLoading;
+        }
+    }
 }

app/src/main/java/ru/myitschool/work/utils/Utils.java

@@ -0,0 +1,13 @@
+package ru.myitschool.work.utils;
+
+import static android.view.View.GONE;
+import static android.view.View.VISIBLE;
+
+import android.view.View;
+
+public class Utils {
+
+    public static int visibleOrGone(boolean isVisible) {
+        return isVisible ? VISIBLE : GONE;
+    }
+}

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

@@ -1,13 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.fragment.app.FragmentContainerView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
-
+    android:id="@+id/root"
-    <androidx.fragment.app.FragmentContainerView
+    app:navGraph="@navigation/nav_graph"
-        android:id="@+id/nav_host_fragment"
+    android:name="androidx.navigation.fragment.NavHostFragment"
-        android:name="androidx.navigation.fragment.NavHostFragment"
+    app:defaultNavHost="true" />
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        app:defaultNavHost="true" />
-</FrameLayout>

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

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/nav_graph"
+    app:startDestination="@id/loginFragment">
+
+    <fragment
+        android:id="@+id/userFragment"
+        android:name="ru.myitschool.work.ui.profile.UserFragment"
+        android:label="UserFragment" >
+        <action
+            android:id="@+id/action_userFragment_to_qrScanFragment"
+            app:destination="@id/qrScanFragment" />
+    </fragment>
+    <fragment
+        android:id="@+id/qrScanFragment"
+        android:name="ru.myitschool.work.ui.qr.scan.QrScanFragment"
+        android:label="QrScanFragment" >
+        <action
+            android:id="@+id/action_qrScanFragment_to_userFragment"
+            app:destination="@id/userFragment" />
+    </fragment>
+    <fragment
+        android:id="@+id/loginFragment"
+        android:name="ru.myitschool.work.ui.login.LoginFragment"
+        android:label="LoginFragment" >
+        <action
+            android:id="@+id/action_loginFragment_to_userFragment"
+            app:destination="@id/userFragment" />
+    </fragment>
+</navigation>