Add: presentation layer

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

@@ -1,6 +1,10 @@
 <?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/main_navigation"
+    app:startDestination="@id/shortform_navigation"
     >
 
+  <include app:graph="@navigation/shortform_navigation" />
+
 </navigation>

core/src/main/java/dev/carlos/core/domain/network/NetworkErrors.kt

@@ -1,7 +1,10 @@
 package dev.carlos.core.domain.network
 
-enum class RequestError {
+import androidx.annotation.StringRes
-    NO_NETWORK,
+import dev.carlos.core.R
-    BAD_RESPONSE,
+
-    UNKNOWN_PROBLEM
+enum class RequestError(@StringRes val message: Int) {
+    NO_NETWORK(R.string.network_error_no_network),
+    BAD_RESPONSE(R.string.network_error_bad_response),
+    UNKNOWN_PROBLEM(R.string.network_error_unknown)
 }

core/src/main/java/dev/carlos/core/extensions/DataExtensions.kt

@@ -5,7 +5,7 @@ import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
 
 fun <T> LiveData<T>.observeNonNull(owner: LifecycleOwner, func: (T) -> Unit) {
-    observe(owner, Observer {
+    observe(owner, {
         it?.let {
             func(it)
         }

core/src/main/java/dev/carlos/core/extensions/StringsExtensions.kt

@@ -0,0 +1,5 @@
+package dev.carlos.core.extensions
+
+import java.util.*
+
+fun String.capitalize() = replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() }

core/src/main/res/drawable/bg_card.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape >
+            <solid android:color="@color/card_background" />
+            <corners android:radius="4dp" />
+        </shape>
+    </item>
+</layer-list>

core/src/main/res/values/colors.xml

@@ -7,4 +7,7 @@
   <color name="teal_700">#FF018786</color>
   <color name="black">#FF000000</color>
   <color name="white">#FFFFFFFF</color>
+  <color name="soft_background">#EEEEEE</color>
+  <color name="transparent">#00000000</color>
+  <color name="card_background">#FFFFFF</color>
 </resources>

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

@@ -1,3 +1,5 @@
 <resources>
-  <string name="app_name">core</string>
+  <string name="network_error_bad_response">Respuesta inesperada</string>
+  <string name="network_error_no_network">Sin conexión</string>
+  <string name="network_error_unknown">Error desconocido</string>
 </resources>

shortform/src/main/java/dev/carlos/shortform/feature/ShortformFragment.kt

@@ -1,4 +1,90 @@
 package dev.carlos.shortform.feature
 
-class ShortformFragment {
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.LinearLayoutManager
+import dev.carlos.core.domain.network.RequestError
+import dev.carlos.core.domain.network.RequestState
+import dev.carlos.core.extensions.gone
+import dev.carlos.core.extensions.observeNonNull
+import dev.carlos.core.extensions.visible
+import dev.carlos.shortform.R
+import dev.carlos.shortform.data.models.ShortformModel
+import dev.carlos.shortform.databinding.FragmentShortformDefinitionBinding
+import dev.carlos.shortform.viewmodels.ShortformViewmodel
+import dev.carlos.shortform.widgets.LongformAdapter
+import org.koin.androidx.viewmodel.ext.android.viewModel
+
+class ShortformFragment : Fragment() {
+    private val viewModel: ShortformViewmodel by viewModel()
+    private val listAdapter by lazy { LongformAdapter() }
+    private lateinit var binding: FragmentShortformDefinitionBinding
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
+    ): View = inflater.inflate(R.layout.fragment_shortform_definition, container, false)
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        setBinding(view)
+        setRecycler()
+        setObservers()
+    }
+
+    private fun setBinding(view: View) {
+        binding = FragmentShortformDefinitionBinding.bind(view)
+    }
+
+    private fun setObservers() {
+        viewModel.acronymDefinition.observeNonNull(this) {
+            handleResult(it)
+        }
+    }
+
+    private fun handleResult(state: RequestState) {
+        when (state) {
+            is RequestState.Success<*> -> handleSuccess(state.data as ShortformModel)
+            is RequestState.Empty -> handleEmpty()
+            is RequestState.Error -> handleError(state.type)
+            is RequestState.Loading -> handleLoading()
+        }
+    }
+
+    private fun handleLoading() {
+        binding.shortformDefinitionLoading.visible()
+        binding.shortformDefinitionError.gone()
+    }
+
+    private fun handleSuccess(shortform: ShortformModel) {
+        binding.shortformDefinitionError.gone()
+        binding.shortformDefinitionLoading.gone()
+        listAdapter.addAll(shortform.results)
+    }
+
+    private fun handleEmpty() {
+        binding.shortformDefinitionErrorLabel.text = getString(R.string.shortform_definition_no_definition)
+        binding.shortformDefinitionError.visible()
+        binding.shortformDefinitionLoading.gone()
+    }
+
+    private fun handleError(error: RequestError) {
+        binding.shortformDefinitionErrorLabel.text = getString(error.message)
+        binding.shortformDefinitionError.visible()
+        binding.shortformDefinitionLoading.gone()
+    }
+
+    private fun setRecycler() {
+        binding.shortformDefinitionRecycler.apply {
+            layoutManager = LinearLayoutManager(context)
+            adapter = listAdapter.apply {
+                onItemClick = {
+                    Toast.makeText(context, it.value, Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
 }

shortform/src/main/java/dev/carlos/shortform/widgets/LongformAdapter.kt

@@ -0,0 +1,60 @@
+package dev.carlos.shortform.widgets
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import dev.carlos.core.extensions.autoNotify
+import dev.carlos.core.extensions.capitalize
+import dev.carlos.shortform.R
+import dev.carlos.shortform.data.models.ShortformModel
+import dev.carlos.shortform.databinding.ItemLongformCardBinding
+import kotlin.properties.Delegates
+
+class LongformAdapter : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+
+    private var items by Delegates.observable(emptyList<ShortformModel.LongformModel>()) { _, oldList, newList ->
+        autoNotify(oldList, newList) { old, new -> old.value == new.value }
+        notifyDataSetChanged()
+    }
+
+    var onItemClick: (ShortformModel.LongformModel) -> Unit = { }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder =
+        LongformViewHolder(
+            LayoutInflater
+                .from(parent.context)
+                .inflate(R.layout.item_longform_card, parent, false),
+            onItemClick
+        )
+
+    fun getItem(position: Int) = items[position]
+
+    fun addAll(list: List<ShortformModel.LongformModel>) {
+        items = list
+    }
+
+    override fun getItemCount() = items.size
+
+    override fun onBindViewHolder(viewholder: RecyclerView.ViewHolder, position: Int) =
+        when (viewholder) {
+            is LongformViewHolder -> viewholder.bind(items[position])
+            else -> throw NoWhenBranchMatchedException("Undefined viewholder")
+        }
+}
+
+class LongformViewHolder(
+    private val view: View,
+    private val onItemClick: (ShortformModel.LongformModel) -> Unit
+) : RecyclerView.ViewHolder(view) {
+
+    private val binding = ItemLongformCardBinding.bind(view)
+
+    fun bind(longform: ShortformModel.LongformModel) = with(view) {
+        binding.itemLongformName.text = longform.value.capitalize()
+        binding.itemLongformSince.text = view.resources.getString(R.string.item_longform_since, longform.since)
+        binding.itemLongformContainer.setOnClickListener {
+            onItemClick(longform)
+        }
+    }
+}

shortform/src/main/res/layout/fragment_shortform_definition.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    >
+
+  <EditText
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:inputType="textPersonName"
+      android:hint="@string/shortform_definition_search"
+      android:textSize="18sp"
+      android:autofillHints="no"
+      android:id="@+id/shortform_definition_search_field"
+      android:layout_weight="1"
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintTop_toTopOf="parent"
+      />
+
+  <androidx.recyclerview.widget.RecyclerView
+      android:id="@+id/shortform_definition_recycler"
+      android:layout_width="match_parent"
+      android:layout_height="0dp"
+      app:layout_constraintTop_toBottomOf="@id/shortform_definition_search_field"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintBottom_toBottomOf="parent"
+      />
+
+  <androidx.appcompat.widget.LinearLayoutCompat
+      android:id="@+id/shortform_definition_error"
+      android:visibility="gone"
+      android:layout_width="match_parent"
+      android:layout_height="0dp"
+      android:background="@color/white"
+      android:gravity="center"
+      app:layout_constraintTop_toBottomOf="@id/shortform_definition_search_field"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintBottom_toBottomOf="parent"
+      >
+
+    <TextView
+        android:id="@+id/shortform_definition_error_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="18sp"
+        tools:text="Error"
+        />
+
+  </androidx.appcompat.widget.LinearLayoutCompat>
+
+  <androidx.appcompat.widget.LinearLayoutCompat
+      android:visibility="gone"
+      android:id="@+id/shortform_definition_loading"
+      android:layout_width="match_parent"
+      android:layout_height="0dp"
+      android:background="@color/white"
+      android:gravity="center"
+      app:layout_constraintTop_toBottomOf="@id/shortform_definition_search_field"
+      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintEnd_toEndOf="parent"
+      app:layout_constraintBottom_toBottomOf="parent"
+      >
+
+    <ProgressBar
+        android:id="@+id/shortform_definition_loading_bar"
+        android:indeterminate="true"
+        android:indeterminateBehavior="repeat"
+        android:layout_width="36dp"
+        android:layout_height="36dp"
+        />
+
+  </androidx.appcompat.widget.LinearLayoutCompat>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

shortform/src/main/res/layout/item_longform_card.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/item_longform_container"
+    android:layout_width="match_parent"
+    android:layout_height="70dp"
+    android:layout_marginStart="8dp"
+    android:layout_marginTop="8dp"
+    android:layout_marginEnd="8dp"
+    android:background="@drawable/bg_card"
+    android:elevation="2dp"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/item_longform_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="12dp"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:maxLines="1"
+        android:ellipsize="end"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="Adenovirus receptor" />
+
+    <TextView
+        android:id="@+id/item_longform_since"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textSize="14sp"
+        app:layout_constraintStart_toStartOf="@+id/item_longform_name"
+        app:layout_constraintTop_toBottomOf="@+id/item_longform_name"
+        tools:text="Since: 1997" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

shortform/src/main/res/navigation/shortform_navigation.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/shortform_navigation"
+    app:startDestination="@id/shortformFragment"
+    >
+
+  <fragment
+      android:id="@+id/shortformFragment"
+      android:name="dev.carlos.shortform.feature.ShortformFragment"
+      tools:layout="@layout/fragment_shortform_definition"
+      android:label="Acronyms"
+      />
+
+</navigation>

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

@@ -1,3 +1,5 @@
 <resources>
-  <string name="app_name">acronyms</string>
+  <string name="item_longform_since">Desde %1$d</string>
+  <string name="shortform_definition_search">Buscar acrónimo</string>
+  <string name="shortform_definition_no_definition">No existe una definición</string>
 </resources>