Implement login/logout functionality

app/src/main/java/gq/kirmanak/mealient/ui/recipes/RecipesFragment.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
@@ -12,6 +13,8 @@ import dagger.hilt.android.AndroidEntryPoint
 import gq.kirmanak.mealient.R
 import gq.kirmanak.mealient.data.recipes.db.entity.RecipeSummaryEntity
 import gq.kirmanak.mealient.databinding.FragmentRecipesBinding
+import gq.kirmanak.mealient.ui.auth.AuthenticationState
+import gq.kirmanak.mealient.ui.auth.AuthenticationViewModel
 import gq.kirmanak.mealient.ui.refreshesLiveData
 import kotlinx.coroutines.flow.collect
 import timber.log.Timber
@@ -20,6 +23,19 @@ import timber.log.Timber
 class RecipesFragment : Fragment(R.layout.fragment_recipes) {
     private val binding by viewBinding(FragmentRecipesBinding::bind)
     private val viewModel by viewModels<RecipeViewModel>()
+    private val authViewModel by activityViewModels<AuthenticationViewModel>()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        authViewModel.authenticationState.observe(this, ::onAuthStateChange)
+    }
+
+    private fun onAuthStateChange(authenticationState: AuthenticationState) {
+        Timber.v("onAuthStateChange() called with: authenticationState = $authenticationState")
+        if (authenticationState == AuthenticationState.AUTH_REQUESTED) {
+            findNavController().navigate(RecipesFragmentDirections.actionRecipesFragmentToAuthenticationFragment())
+        }
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)

app/src/main/java/gq/kirmanak/mealient/ui/recipes/info/RecipeInfoFragment.kt

@@ -19,58 +19,58 @@ import javax.inject.Inject
 
 @AndroidEntryPoint
 class RecipeInfoFragment : BottomSheetDialogFragment() {
-  private val binding by viewBinding(FragmentRecipeInfoBinding::bind)
-  private val arguments by navArgs<RecipeInfoFragmentArgs>()
-  private val viewModel by viewModels<RecipeInfoViewModel>()
+    private val binding by viewBinding(FragmentRecipeInfoBinding::bind)
+    private val arguments by navArgs<RecipeInfoFragmentArgs>()
+    private val viewModel by viewModels<RecipeInfoViewModel>()
 
-  @Inject
-  lateinit var ingredientsAdapter: RecipeIngredientsAdapter
+    @Inject
+    lateinit var ingredientsAdapter: RecipeIngredientsAdapter
 
-  @Inject
-  lateinit var instructionsAdapter: RecipeInstructionsAdapter
+    @Inject
+    lateinit var instructionsAdapter: RecipeInstructionsAdapter
 
-  override fun onCreateView(
-    inflater: LayoutInflater,
-    container: ViewGroup?,
-    savedInstanceState: Bundle?
-  ): View {
-    Timber.v("onCreateView() called")
-    return FragmentRecipeInfoBinding.inflate(inflater, container, false).root
-  }
-
-  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-    super.onViewCreated(view, savedInstanceState)
-    Timber.v("onViewCreated() called")
-
-    binding.ingredientsList.adapter = ingredientsAdapter
-    binding.instructionsList.adapter = instructionsAdapter
-
-    viewModel.loadRecipeImage(binding.image, arguments.recipeSlug)
-    viewModel.loadRecipeInfo(arguments.recipeId, arguments.recipeSlug)
-
-    viewModel.recipeInfo.observe(viewLifecycleOwner) {
-      Timber.d("onViewCreated: full info $it")
-      binding.title.text = it.recipeSummaryEntity.name
-      binding.description.text = it.recipeSummaryEntity.description
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        Timber.v("onCreateView() called")
+        return FragmentRecipeInfoBinding.inflate(inflater, container, false).root
     }
 
-    viewModel.listsVisibility.observe(viewLifecycleOwner) {
-      Timber.d("onViewCreated: lists visibility $it")
-      binding.ingredientsHolder.isVisible = it.areIngredientsVisible
-      binding.instructionsGroup.isVisible = it.areInstructionsVisible
-    }
-  }
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        Timber.v("onViewCreated() called")
 
-  override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
-    BottomSheetDialog(requireContext(), R.style.NoShapeBottomSheetDialog)
+        binding.ingredientsList.adapter = ingredientsAdapter
+        binding.instructionsList.adapter = instructionsAdapter
 
-  override fun onDestroyView() {
-    super.onDestroyView()
-    Timber.v("onDestroyView() called")
-    // Prevent RV leaking through mObservers list in adapter
-    with(binding) {
-      ingredientsList.adapter = null
-      instructionsList.adapter = null
+        viewModel.loadRecipeImage(binding.image, arguments.recipeSlug)
+        viewModel.loadRecipeInfo(arguments.recipeId, arguments.recipeSlug)
+
+        viewModel.recipeInfo.observe(viewLifecycleOwner) {
+            Timber.d("onViewCreated: full info $it")
+            binding.title.text = it.recipeSummaryEntity.name
+            binding.description.text = it.recipeSummaryEntity.description
+        }
+
+        viewModel.listsVisibility.observe(viewLifecycleOwner) {
+            Timber.d("onViewCreated: lists visibility $it")
+            binding.ingredientsHolder.isVisible = it.areIngredientsVisible
+            binding.instructionsGroup.isVisible = it.areInstructionsVisible
+        }
+    }
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
+        BottomSheetDialog(requireContext(), R.style.NoShapeBottomSheetDialog)
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        Timber.v("onDestroyView() called")
+        // Prevent RV leaking through mObservers list in adapter
+        with(binding) {
+            ingredientsList.adapter = null
+            instructionsList.adapter = null
+        }
     }
-  }
 }

app/src/main/java/gq/kirmanak/mealient/ui/recipes/info/RecipeInfoViewModel.kt

@@ -24,9 +24,11 @@ constructor(
 ) : ViewModel() {
 
     private val _recipeInfo = MutableLiveData<FullRecipeInfo>()
-    val recipeInfo: LiveData<FullRecipeInfo> by ::_recipeInfo
+    val recipeInfo: LiveData<FullRecipeInfo>
+        get() = _recipeInfo
     private val _listsVisibility = MutableLiveData(RecipeInfoListsVisibility())
-    val listsVisibility: LiveData<RecipeInfoListsVisibility> by ::_listsVisibility
+    val listsVisibility: LiveData<RecipeInfoListsVisibility>
+        get() = _listsVisibility
 
     fun loadRecipeImage(view: ImageView, recipeSlug: String) {
         Timber.v("loadRecipeImage() called with: view = $view, recipeSlug = $recipeSlug")