homework navigation

app/build.gradle.kts

@@ -50,4 +50,6 @@ dependencies {
     implementation(libs.androidx.constraintlayout)
     testImplementation(libs.junit)
     testImplementation(libs.kotlin.coroutines.test)
+    implementation (libs.glide)
+    annotationProcessor (libs.compiler)
 }

app/src/main/AndroidManifest.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+    <uses-permission android:name="android.permission.INTERNET" />
 
     <application
         android:allowBackup="true"

app/src/main/kotlin/ru/otus/cookbook/MainActivity.kt

@@ -1,6 +1,7 @@
 package ru.otus.cookbook
 
 import android.os.Bundle
+import android.view.MenuItem
 import androidx.appcompat.app.AppCompatActivity
 import ru.otus.cookbook.databinding.ActivityMainBinding
 

app/src/main/kotlin/ru/otus/cookbook/cook_recycler_view/CategoryViewHolder.kt

@@ -0,0 +1,15 @@
+package ru.otus.cookbook.cook_recycler_view
+
+import android.view.View
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import ru.otus.cookbook.R
+import ru.otus.cookbook.data.RecipeListItem
+
+class CategoryViewHolder(private val categoryView: View) : RecyclerView.ViewHolder(categoryView) {
+    private val categoryText: TextView by lazy { categoryView.findViewById(R.id.categoryText) }
+
+    fun bind(categoryData: RecipeListItem.CategoryItem) {
+        categoryText.text = categoryData.name
+    }
+}

app/src/main/kotlin/ru/otus/cookbook/cook_recycler_view/RecipeAdapter.kt

@@ -0,0 +1,65 @@
+package ru.otus.cookbook.cook_recycler_view
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.ListAdapter
+import androidx.recyclerview.widget.RecyclerView
+import ru.otus.cookbook.R
+import ru.otus.cookbook.data.RecipeListItem
+
+class RecipeAdapter : ListAdapter<RecipeListItem, RecyclerView.ViewHolder>(RecipeDiffutils()) {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+
+        return when (viewType) {
+            ViewType.CATEGORY.id -> {
+                val view = LayoutInflater.from(parent.context)
+                    .inflate(R.layout.vh_recipe_category, parent, false)
+                CategoryViewHolder(view)
+            }
+
+            ViewType.RECIPE.id -> {
+                val view = LayoutInflater.from(parent.context)
+                    .inflate(R.layout.vh_recipe_item, parent, false)
+                RecipeViewHolder(view)
+            }
+
+            else -> throw IllegalArgumentException("wrong type of view")
+        }
+    }
+
+    override fun getItemViewType(position: Int): Int {
+        return when (currentList[position]) {
+            is RecipeListItem.CategoryItem -> ViewType.CATEGORY.id
+            is RecipeListItem.RecipeItem -> ViewType.RECIPE.id
+            else -> -1
+        }
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+
+        when (val item = currentList.getOrNull(position)) {
+            is RecipeListItem.CategoryItem -> {
+                (holder as CategoryViewHolder).bind(item)
+            }
+
+            is RecipeListItem.RecipeItem -> {
+                (holder as RecipeViewHolder).bind(item)
+            }
+
+            else ->
+                throw IllegalArgumentException("wrong type of holder")
+        }
+    }
+
+    fun changeRecipeItems(newChatList: List<RecipeListItem>) {
+        this.submitList(newChatList)
+        currentList
+        println()
+    }
+
+    enum class ViewType(val id: Int) {
+        CATEGORY(0),
+        RECIPE(1)
+    }
+}

app/src/main/kotlin/ru/otus/cookbook/cook_recycler_view/RecipeDiffutils.kt

@@ -0,0 +1,15 @@
+package ru.otus.cookbook.cook_recycler_view
+
+import androidx.recyclerview.widget.DiffUtil
+import ru.otus.cookbook.data.RecipeListItem
+
+class RecipeDiffutils : DiffUtil.ItemCallback<RecipeListItem>() {
+
+    override fun areItemsTheSame(oldItem: RecipeListItem, newItem: RecipeListItem): Boolean {
+        return oldItem== newItem
+    }
+
+    override fun areContentsTheSame(oldItem: RecipeListItem, newItem: RecipeListItem): Boolean {
+        return oldItem == newItem
+    }
+}

app/src/main/kotlin/ru/otus/cookbook/cook_recycler_view/RecipeViewHolder.kt

@@ -0,0 +1,30 @@
+package ru.otus.cookbook.cook_recycler_view
+
+import android.view.View
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.bumptech.glide.Glide
+import ru.otus.cookbook.helpers.NavigateHelper
+
+import ru.otus.cookbook.R
+import ru.otus.cookbook.data.RecipeListItem
+
+class RecipeViewHolder(private val recipeView: View) : RecyclerView.ViewHolder(recipeView) {
+
+    private val title: TextView by lazy { recipeView.findViewById(R.id.titleRecipe) }
+    private val description: TextView by lazy { recipeView.findViewById(R.id.titleDescription) }
+    private val imageRecipe: ImageView by lazy { recipeView.findViewById(R.id.imageRecipe) }
+
+
+    fun bind(recipeData: RecipeListItem.RecipeItem) {
+        recipeView.setOnClickListener { NavigateHelper.showMoreAboutRecipe(recipeData.id) }
+
+        title.text = recipeData.title
+        description.text = recipeData.description
+
+        Glide.with(recipeView.context)
+            .load(recipeData.imageUrl)
+            .into(imageRecipe)
+    }
+}

app/src/main/kotlin/ru/otus/cookbook/data/Recipe.kt

@@ -21,7 +21,7 @@ val cookbook = listOf(
         title = "Pasta Carbonara",
         description = "Pasta Carbonara is a classic pasta dish from Rome with eggs, cheese and bacon.",
         category = RecipeCategory("Pasta"),
-        imageUrl = "https://en.wikipedia.org/wiki/Carbonara#/media/File:Espaguetis_carbonara.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Espaguetis_carbonara.jpg/1920px-Espaguetis_carbonara.jpg",
         steps = listOf(
             "Cook the pasta in a large pot of boiling salted water until al dente.",
             "Meanwhile, whisk the eggs and Parmesan together in a bowl.",
@@ -40,7 +40,7 @@ val cookbook = listOf(
         title = "Fettuccine_Alfredo",
         description = "Fettuccine Alfredo is a classic pasta dish from Rome with butter, cream and Parmesan.",
         category = RecipeCategory("Pasta"),
-        imageUrl = "https://en.wikipedia.org/wiki/Fettuccine_Alfredo#/media/File:The_Only_Original_Alfredo_Sauce_with_Butter_and_Parmesano-Reggiano_Cheese.png",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/d/dc/The_Only_Original_Alfredo_Sauce_with_Butter_and_Parmesano-Reggiano_Cheese.png",
         steps = listOf(
             "Cook the fettuccine in a large pot of boiling salted water until al dente.",
             "Meanwhile, melt the butter in a large pan over medium heat.",
@@ -57,7 +57,7 @@ val cookbook = listOf(
         title = "Cod in breadcrumbs",
         description = "Cod in breadcrumbs is a simple and delicious fish dish that is perfect for a quick and easy dinner.",
         category = RecipeCategory("Fish"),
-        imageUrl = "https://en.wikipedia.org/wiki/Fish_finger#/media/File:Fishfinger_classic_fried_2.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/6/64/Fishfinger_classic_fried_2.jpg/1920px-Fishfinger_classic_fried_2.jpg",
         steps = listOf(
             "Preheat the oven to 200C/180C Fan/Gas 6.",
             "Place the cod fillets on a baking tray.",
@@ -72,7 +72,7 @@ val cookbook = listOf(
         title = "Beef Stroganoff",
         description = "Beef Stroganoff is a classic Russian dish made with beef, mushrooms and sour cream.",
         category = RecipeCategory("Beef"),
-        imageUrl = "https://en.wikipedia.org/wiki/Beef_Stroganoff#/media/File:Moscow_(8351271825).jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Moscow_%288351271825%29.jpg/1920px-Moscow_%288351271825%29.jpg",
         steps = listOf(
             "Heat the oil in a large pan over medium heat.",
             "Add the beef and cook until browned.",
@@ -89,7 +89,7 @@ val cookbook = listOf(
         title = "Chicken Tikka Masala",
         description = "Chicken Tikka Masala is a classic Indian dish made with marinated chicken cooked in a spicy tomato sauce.",
         category = RecipeCategory("Chicken"),
-        imageUrl = "https://en.wikipedia.org/wiki/Chicken_tikka_masala#/media/File:Chicken_tikka_masala.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Chicken_tikka_masala.jpg/800px-Chicken_tikka_masala.jpg",
         steps = listOf(
             "Marinate the chicken in the yogurt, lemon juice, garlic, ginger, garam masala, turmeric, cumin, coriander, paprika, salt and pepper for at least 1 hour.",
             "Heat the oil in a large pan over medium heat.",
@@ -106,7 +106,7 @@ val cookbook = listOf(
         title = "Solyanka",
         description = "Solyanka is a traditional Russian soup made with meat, pickles, olives and capers.",
         category = RecipeCategory("Soup"),
-        imageUrl = "https://en.wikipedia.org/wiki/Solyanka#/media/File:Soljanka_food_05.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Soljanka_food_05.jpg/1280px-Soljanka_food_05.jpg",
         steps = listOf(
             "Heat the oil in a large pan over medium heat.",
             "Add the onion, garlic, carrots and celery and cook until softened.",
@@ -122,7 +122,7 @@ val cookbook = listOf(
         title = "Surströmming",
         description = "Surströmming is a traditional Swedish dish made with fermented herring.",
         category = RecipeCategory("Fish"),
-        imageUrl = "https://en.wikipedia.org/wiki/Surstr%C3%B6mming#/media/File:Surstr%C3%B6mming.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/6/6a/Surströmming.jpg/1280px-Surströmming.jpg",
         steps = listOf(
             "Open the can of surströmming outdoors, as the smell is very strong",
             "Remove the herring from the can and rinse it under cold water",
@@ -135,7 +135,7 @@ val cookbook = listOf(
         title = "Sichuang Hotpot",
         description = "Sichuang Hotpot is a traditional Chinese dish made with spicy broth, meat, vegetables and noodles.",
         category = RecipeCategory("Chinese"),
-        imageUrl = "https://en.wikipedia.org/wiki/Chongqing_hot_pot#/media/File:Chongqing_hotpot_2.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Chongqing_hotpot_2.jpg/1280px-Chongqing_hotpot_2.jpg",
         steps = listOf(
             "Prepare the broth by boiling water with Sichuang peppercorns, dried chilies, ginger, garlic, star anise, cinnamon and bay leaves",
             "Add the meat, vegetables and noodles to the broth and cook until tender",
@@ -147,7 +147,7 @@ val cookbook = listOf(
         title = "Tiramisu",
         description = "Tiramisu is a classic Italian dessert made with coffee, mascarpone cheese, eggs, sugar and ladyfingers.",
         category = RecipeCategory("Dessert"),
-        imageUrl = "https://en.wikipedia.org/wiki/Tiramisu#/media/File:Tiramisu_-_Raffaele_Diomede.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Tiramisu_-_Raffaele_Diomede.jpg/1280px-Tiramisu_-_Raffaele_Diomede.jpg",
         steps = listOf(
             "Brew the coffee and let it cool",
             "Whisk the egg yolks and sugar together until pale and creamy",
@@ -165,7 +165,7 @@ val cookbook = listOf(
         title = "Borscht",
         description = "Borscht is a traditional Russian soup made with beets, cabbage, potatoes and beef.",
         category = RecipeCategory("Soup"),
-        imageUrl = "https://en.wikipedia.org/wiki/Borscht#/media/File:Borscht_served.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/Borscht_served.jpg/1920px-Borscht_served.jpg",
         steps = listOf(
             "Heat the oil in a large pan over medium heat.",
             "Add the onion, garlic, carrots and celery and cook until softened.",
@@ -181,7 +181,7 @@ val cookbook = listOf(
         title = "Peking Duck",
         description = "Peking Duck is a traditional Chinese dish made with roasted duck, pancakes, hoisin sauce and cucumber.",
         category = RecipeCategory("Chinese"),
-        imageUrl = "https://en.wikipedia.org/wiki/Peking_duck#/media/File:Peking_Duck,_2014_(02).jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/8/81/Peking_Duck%2C_2014_%2802%29.jpg/1280px-Peking_Duck%2C_2014_%2802%29.jpg",
         steps = listOf(
             "Prepare the duck by removing the giblets and excess fat",
             "Rub the duck with a mixture of honey, soy sauce, five-spice powder and salt",
@@ -195,7 +195,7 @@ val cookbook = listOf(
         title = "Sushi",
         description = "Sushi is a traditional Japanese dish made with vinegared rice, fish, vegetables and seaweed.",
         category = RecipeCategory("Japanese"),
-        imageUrl = "https://en.wikipedia.org/wiki/Sushi#/media/File:Sushi_platter.jpg",
+        imageUrl = "https://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Sushi_platter.jpg/1024px-Sushi_platter.jpg",
         steps = listOf(
             "Cook the rice and season with rice vinegar, sugar and salt",
             "Prepare the fish and vegetables by slicing them into thin strips",

app/src/main/kotlin/ru/otus/cookbook/data/RecipeListItem.kt

@@ -28,7 +28,7 @@ sealed class RecipeListItem : WithLayoutId {
     data class CategoryItem(val category: RecipeCategory) : RecipeListItem(), WithLayoutId by CategoryItem {
         companion object : WithLayoutId {
             @get:LayoutRes
-            override val layoutId: Int = R.layout.vh_recipe_category
+            override val layoutId: Int = R.layout.vh_recipe_item
         }
 
         val name: String get() = category.name

app/src/main/kotlin/ru/otus/cookbook/helpers/NavigateHelper.kt

@@ -0,0 +1,39 @@
+package ru.otus.cookbook.helpers
+
+import android.annotation.SuppressLint
+import androidx.navigation.NavController
+import ru.otus.cookbook.ui.CookbookFragmentDirections
+import ru.otus.cookbook.ui.RecipeFragment
+import ru.otus.cookbook.ui.RecipeFragmentDirections
+import ru.otus.cookbook.R
+
+object NavigateHelper {
+
+    @SuppressLint("StaticFieldLeak")
+    private var _navController: NavController? = null
+    private var _recipeFragment: RecipeFragment? = null
+
+    fun setNavController(navController: NavController) {
+        _navController = navController
+    }
+
+    fun showMoreAboutRecipe(id: Int) {
+        val action =
+            CookbookFragmentDirections.actionCookbookFragmentToRecipeFragment(recipeId = id)
+        _navController?.navigate(action)
+    }
+
+    fun showAlertDialogOnRecipeFragment(recipeName: String, recipeFragment: RecipeFragment) {
+        _recipeFragment = recipeFragment
+        val action =
+            RecipeFragmentDirections.actionRecipeFragmentToAlertDialogDialogFragment(recipeName)
+        _navController?.navigate(action)
+    }
+
+    fun onDelete() {
+        _recipeFragment?.onAlertDialogDelete()
+        _navController?.popBackStack(R.id.cookbookFragment, false)
+        _recipeFragment = null
+    }
+}
+

app/src/main/kotlin/ru/otus/cookbook/ui/AlertDialogFragment.kt

@@ -0,0 +1,32 @@
+package ru.otus.cookbook.ui
+
+import ru.otus.cookbook.R
+import android.app.Dialog
+import android.os.Bundle
+import androidx.fragment.app.DialogFragment
+import androidx.navigation.fragment.navArgs
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import ru.otus.cookbook.helpers.NavigateHelper
+
+
+class AlertDialogFragment : DialogFragment() {
+    private val args: AlertDialogFragmentArgs by navArgs()
+    private val recipeName: String get() = args.recipeName
+
+    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
+
+        val builder = activity?.let { MaterialAlertDialogBuilder(it) }
+
+        builder?.apply {
+            setTitle("Delete")
+            setMessage("Are you sure you want to delete $recipeName ?")
+            setNegativeButton("Cancel") { _, _ ->
+                return@setNegativeButton
+            }
+            setPositiveButton("OK") { _, _ ->
+                NavigateHelper.onDelete()
+            }
+        }
+        return builder?.create()!!
+    }
+}

app/src/main/kotlin/ru/otus/cookbook/ui/CookbookFragment.kt

@@ -4,18 +4,25 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.flowWithLifecycle
 import androidx.lifecycle.lifecycleScope
+import androidx.navigation.fragment.findNavController
+import androidx.recyclerview.widget.DividerItemDecoration
 import kotlinx.coroutines.launch
+import ru.otus.cookbook.R
+import ru.otus.cookbook.cook_recycler_view.RecipeAdapter
+import ru.otus.cookbook.helpers.NavigateHelper
 import ru.otus.cookbook.data.RecipeListItem
 import ru.otus.cookbook.databinding.FragmentCookbookBinding
 
 class CookbookFragment : Fragment() {
 
     private val binding = FragmentBindingDelegate<FragmentCookbookBinding>(this)
     private val model: CookbookFragmentViewModel by viewModels { CookbookFragmentViewModel.Factory }
+    private val recipeAdapter by lazy { RecipeAdapter() }
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -37,10 +44,19 @@ class CookbookFragment : Fragment() {
     }
 
     private fun setupRecyclerView() = binding.withBinding {
-        // Setup RecyclerView
+
+        val navController = findNavController()
+        NavigateHelper.setNavController(navController)
+
+        cardRecipesRcView.adapter = recipeAdapter
+
+        val divider = DividerItemDecoration(this@CookbookFragment.context,DividerItemDecoration.VERTICAL)
+        divider.setDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.divider_rv)!!)
+
+        cardRecipesRcView.addItemDecoration(divider)
     }
 
     private fun onRecipeListUpdated(recipeList: List<RecipeListItem>) {
-        // Handle recipe list
+        recipeAdapter.changeRecipeItems(recipeList)
     }
 }