From 5e43da31d91eb95373aca6ebd8999ac925e87d73 Mon Sep 17 00:00:00 2001
From: Filipe Bezerra <filipebzerra@gmail.com>
Date: Sun, 27 Sep 2020 18:05:50 -0300
Subject: [PATCH 1/4] Rename .java to .kt

---
 .../main/java/br/com/alura/leilao/model/{Lance.java => Lance.kt}  | 0
 .../java/br/com/alura/leilao/model/{Leilao.java => Leilao.kt}     | 0
 .../java/br/com/alura/leilao/model/{Usuario.java => Usuario.kt}   | 0
 .../activity/{ListaLeilaoActivity.java => ListaLeilaoActivity.kt} | 0
 .../adapter/{ListaLeilaoAdapter.java => ListaLeilaoAdapter.kt}    | 0
 5 files changed, 0 insertions(+), 0 deletions(-)
 rename app/src/main/java/br/com/alura/leilao/model/{Lance.java => Lance.kt} (100%)
 rename app/src/main/java/br/com/alura/leilao/model/{Leilao.java => Leilao.kt} (100%)
 rename app/src/main/java/br/com/alura/leilao/model/{Usuario.java => Usuario.kt} (100%)
 rename app/src/main/java/br/com/alura/leilao/ui/activity/{ListaLeilaoActivity.java => ListaLeilaoActivity.kt} (100%)
 rename app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/{ListaLeilaoAdapter.java => ListaLeilaoAdapter.kt} (100%)

diff --git a/app/src/main/java/br/com/alura/leilao/model/Lance.java b/app/src/main/java/br/com/alura/leilao/model/Lance.kt
similarity index 100%
rename from app/src/main/java/br/com/alura/leilao/model/Lance.java
rename to app/src/main/java/br/com/alura/leilao/model/Lance.kt
diff --git a/app/src/main/java/br/com/alura/leilao/model/Leilao.java b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
similarity index 100%
rename from app/src/main/java/br/com/alura/leilao/model/Leilao.java
rename to app/src/main/java/br/com/alura/leilao/model/Leilao.kt
diff --git a/app/src/main/java/br/com/alura/leilao/model/Usuario.java b/app/src/main/java/br/com/alura/leilao/model/Usuario.kt
similarity index 100%
rename from app/src/main/java/br/com/alura/leilao/model/Usuario.java
rename to app/src/main/java/br/com/alura/leilao/model/Usuario.kt
diff --git a/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.java b/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
similarity index 100%
rename from app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.java
rename to app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
diff --git a/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.java b/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
similarity index 100%
rename from app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.java
rename to app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt

From b934bcfb2051048126aefa98783b833b3ca68399 Mon Sep 17 00:00:00 2001
From: Filipe Bezerra <filipebzerra@gmail.com>
Date: Sun, 27 Sep 2020 18:05:52 -0300
Subject: [PATCH 2/4] Calcula o maior lance convertendo classes para Kotlin

---
 .idea/caches/build_file_checksums.ser         | Bin 534 -> 545 bytes
 .idea/codeStyles/Project.xml                  | 152 +++++++++++++++---
 .idea/gradle.xml                              |   2 +
 .idea/jarRepositories.xml                     |  45 ++++++
 .idea/misc.xml                                |  18 ++-
 app/build.gradle                              |   5 +
 .../java/br/com/alura/leilao/model/Lance.kt   |  19 +--
 .../java/br/com/alura/leilao/model/Leilao.kt  |  30 ++--
 .../java/br/com/alura/leilao/model/Usuario.kt |  14 +-
 .../leilao/ui/activity/ListaLeilaoActivity.kt |  78 ++++-----
 .../adapter/ListaLeilaoAdapter.kt             |  99 +++++-------
 app/src/main/res/values/strings.xml           |   1 +
 build.gradle                                  |   8 +-
 gradle/wrapper/gradle-wrapper.properties      |   4 +-
 14 files changed, 304 insertions(+), 171 deletions(-)
 create mode 100644 .idea/jarRepositories.xml

diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index e8607c0e0cc193a829dd2fb51c11ac7e39f73dd1..703e94cfec1f0b95a04a65d4a0a0adbac2fa7eee 100644
GIT binary patch
delta 194
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z14Bgt0|SFVe`@-|n68gD*P|C*nfm{%R0#uracW6PW?p(ROk*KK9Ru5BK1MMG181w4
z(Bjmh;+V9|oXmpMq|~a^qN2nYsLGhh{fxSdJd@uuiV55m4a$sIwU71VotJ@5n?zqt
m_GXk7zIe`OT}C3W;_K;e9+uu{`BcIn2-G4y`39o^V+8=u8%rDj

delta 204
zcmZ3;GL2=zbk^k4W}g@)&ha<rFHS8f$;?YH)=Mu+Ovy<tEn;Abc3SgU{0AFH$O9$@
zhKd3P1_puU|D+C2%-s4^BPuR9O<z@d@*GCVkc`|`#_Q4Q!sZX#${FTl{3~G)$jMJm
z%+V_-$}dPQD#=VOE-hrJV_*ZBaHiJf`uy6jQ+Uj{;wG3X%at&w>SyHVrs^l=q*kQq
zL#@}JT*#=)C<r8_CkrqMumg=uEGW>QJfBfa(C1<FiiOixo9VawQ%+@k8dCuPfgwmO

diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
index 30aa626..db291c6 100644
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@@ -1,29 +1,131 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
-    <Objective-C-extensions>
-      <file>
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Import" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Macro" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Typedef" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Enum" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Constant" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Global" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Struct" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="FunctionPredecl" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Function" />
-      </file>
-      <class>
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Property" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="Synthesize" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InitMethod" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="StaticMethod" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="InstanceMethod" />
-        <option name="com.jetbrains.cidr.lang.util.OCDeclarationKind" value="DeallocMethod" />
-      </class>
-      <extensions>
-        <pair source="cpp" header="h" fileNamingConvention="NONE" />
-        <pair source="c" header="h" fileNamingConvention="NONE" />
-      </extensions>
-    </Objective-C-extensions>
+    <JetCodeStyleSettings>
+      <option name="PACKAGES_TO_USE_STAR_IMPORTS">
+        <value>
+          <package name="java.util" alias="false" withSubpackages="false" />
+          <package name="kotlinx.android.synthetic" alias="false" withSubpackages="true" />
+          <package name="io.ktor" alias="false" withSubpackages="true" />
+        </value>
+      </option>
+      <option name="PACKAGES_IMPORT_LAYOUT">
+        <value>
+          <package name="" alias="false" withSubpackages="true" />
+          <package name="java" alias="false" withSubpackages="true" />
+          <package name="javax" alias="false" withSubpackages="true" />
+          <package name="kotlin" alias="false" withSubpackages="true" />
+          <package name="" alias="true" withSubpackages="true" />
+        </value>
+      </option>
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="XML">
+      <arrangement>
+        <rules>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>ANDROID_ATTRIBUTE_ORDER</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>.*</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+        </rules>
+      </arrangement>
+    </codeStyleSettings>
   </code_scheme>
 </component>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 7ac24c7..5cd135a 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="modules">
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..144132d
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="D:\devtools\android\sdk\extras\android\m2repository" />
+      <option name="name" value="D:\devtools\android\sdk\extras\android\m2repository" />
+      <option name="url" value="file:/D:/devtools/android/sdk/extras/android/m2repository" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="D:\devtools\android\sdk\extras\google\m2repository" />
+      <option name="name" value="D:\devtools\android\sdk\extras\google\m2repository" />
+      <option name="url" value="file:/D:/devtools/android/sdk/extras/google/m2repository" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="D:\devtools\android\sdk\extras\m2repository" />
+      <option name="name" value="D:\devtools\android\sdk\extras\m2repository" />
+      <option name="url" value="file:/D:/devtools/android/sdk/extras/m2repository" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 99202cc..b9be38f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -5,22 +5,36 @@
     <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />
     <option name="myNullables">
       <value>
-        <list size="5">
+        <list size="12">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
           <item index="2" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
           <item index="3" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
           <item index="4" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.Nullable" />
+          <item index="6" class="java.lang.String" itemvalue="android.annotation.Nullable" />
+          <item index="7" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNullable" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.Nullable" />
+          <item index="9" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableDecl" />
+          <item index="10" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableType" />
+          <item index="11" class="java.lang.String" itemvalue="com.android.annotations.Nullable" />
         </list>
       </value>
     </option>
     <option name="myNotNulls">
       <value>
-        <list size="4">
+        <list size="11">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
           <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
           <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+          <item index="4" class="java.lang.String" itemvalue="androidx.annotation.NonNull" />
+          <item index="5" class="java.lang.String" itemvalue="android.annotation.NonNull" />
+          <item index="6" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNonNull" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.NonNull" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullDecl" />
+          <item index="9" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullType" />
+          <item index="10" class="java.lang.String" itemvalue="com.android.annotations.NonNull" />
         </list>
       </value>
     </option>
diff --git a/app/build.gradle b/app/build.gradle
index 9125982..d649651 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
 
 android {
     compileSdkVersion 27
@@ -26,4 +27,8 @@ dependencies {
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
     implementation 'com.android.support:recyclerview-v7:27.1.1'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
 }
diff --git a/app/src/main/java/br/com/alura/leilao/model/Lance.kt b/app/src/main/java/br/com/alura/leilao/model/Lance.kt
index 0c2494c..81f7dc7 100644
--- a/app/src/main/java/br/com/alura/leilao/model/Lance.kt
+++ b/app/src/main/java/br/com/alura/leilao/model/Lance.kt
@@ -1,15 +1,8 @@
-package br.com.alura.leilao.model;
+package br.com.alura.leilao.model
 
-import java.io.Serializable;
+import java.io.Serializable
 
-public class Lance implements Serializable {
-
-    private final Usuario usuario;
-    private final double valor;
-
-    public Lance(Usuario usuario, double valor) {
-        this.usuario = usuario;
-        this.valor = valor;
-    }
-
-}
+class Lance(
+        val usuario: Usuario,
+        val valor: Double
+) : Serializable
\ No newline at end of file
diff --git a/app/src/main/java/br/com/alura/leilao/model/Leilao.kt b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
index 3b5d23a..230818b 100644
--- a/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
+++ b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
@@ -1,21 +1,17 @@
-package br.com.alura.leilao.model;
+package br.com.alura.leilao.model
 
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.List;
+import java.io.Serializable
+import java.util.*
 
-public class Leilao implements Serializable {
+class Leilao(val descricao: String) : Serializable {
+    private val lances: MutableList<Lance> =  ArrayList()
+    var maiorLance: Double = Double.NEGATIVE_INFINITY
+        private set
 
-    private final String descricao;
-    private final List<Lance> lances;
-
-    public Leilao(String descricao) {
-        this.descricao = descricao;
-        this.lances = new ArrayList<>();
-    }
-
-    public String getDescricao() {
-        return descricao;
+    fun oferta(lance: Lance) {
+        lances.add(lance)
+        if (lance.valor > maiorLance) {
+            maiorLance = lance.valor
+        }
     }
-
-}
+}
\ No newline at end of file
diff --git a/app/src/main/java/br/com/alura/leilao/model/Usuario.kt b/app/src/main/java/br/com/alura/leilao/model/Usuario.kt
index 18d8459..01f5b0b 100644
--- a/app/src/main/java/br/com/alura/leilao/model/Usuario.kt
+++ b/app/src/main/java/br/com/alura/leilao/model/Usuario.kt
@@ -1,13 +1,5 @@
-package br.com.alura.leilao.model;
+package br.com.alura.leilao.model
 
-import java.io.Serializable;
+import java.io.Serializable
 
-public class Usuario implements Serializable {
-
-    private final String nome;
-
-    public Usuario(String nome) {
-        this.nome = nome;
-    }
-
-}
+class Usuario(val nome: String) : Serializable
\ No newline at end of file
diff --git a/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt b/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
index acd41e7..1530df9 100644
--- a/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
+++ b/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
@@ -1,42 +1,48 @@
-package br.com.alura.leilao.ui.activity;
+package br.com.alura.leilao.ui.activity
 
-import android.content.Intent;
-import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
-import android.support.v7.widget.RecyclerView;
+import android.content.Intent
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.support.v7.widget.RecyclerView
+import br.com.alura.leilao.R
+import br.com.alura.leilao.model.Lance
+import br.com.alura.leilao.model.Leilao
+import br.com.alura.leilao.model.Usuario
+import br.com.alura.leilao.ui.recyclerview.adapter.ListaLeilaoAdapter
+import java.util.*
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-import br.com.alura.leilao.R;
-import br.com.alura.leilao.model.Leilao;
-import br.com.alura.leilao.ui.recyclerview.adapter.ListaLeilaoAdapter;
-
-public class ListaLeilaoActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_lista_leilao);
-        ListaLeilaoAdapter adapter = new ListaLeilaoAdapter(this, leiloesDeExemplo());
-        RecyclerView recyclerView = findViewById(R.id.lista_leilao_recyclerview);
-        recyclerView.setAdapter(adapter);
-        adapter.setOnItemClickListener(new ListaLeilaoAdapter.OnItemClickListener() {
-            @Override
-            public void onItemClick(Leilao leilao) {
-                Intent vaiParaLancesLeilao = new Intent(ListaLeilaoActivity.this, LancesLeilaoActivity.class);
-                vaiParaLancesLeilao.putExtra("leilao", leilao);
-                startActivity(vaiParaLancesLeilao);
-            }
-        });
+class ListaLeilaoActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_lista_leilao)
+        val adapter = ListaLeilaoAdapter(
+                this,
+                leiloesDeExemplo(),
+                onItemClickListener = { leilao ->
+                    val vaiParaLancesLeilao = Intent(
+                            this@ListaLeilaoActivity,
+                            LancesLeilaoActivity::class.java
+                    )
+                    vaiParaLancesLeilao.putExtra("leilao", leilao)
+                    startActivity(vaiParaLancesLeilao)
+                }
+        )
+        val recyclerView = findViewById<RecyclerView>(R.id.lista_leilao_recyclerview)
+        recyclerView.adapter = adapter
     }
 
-    private List<Leilao> leiloesDeExemplo() {
-        Leilao console = new Leilao("Console");
-        return new ArrayList<>(Arrays.asList(
+    private fun leiloesDeExemplo(): List<Leilao> {
+        val console = Leilao("Console")
+        console.oferta(Lance(
+                usuario = Usuario(nome = "Magda"),
+                valor = 300.0
+        ))
+        console.oferta(Lance(
+                usuario = Usuario(nome = "Junior"),
+                valor = 200.0
+        ))
+        return ArrayList(Arrays.asList(
                 console
-        ));
+        ))
     }
-
-}
+}
\ No newline at end of file
diff --git a/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt b/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
index c5dd93c..982d00a 100644
--- a/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
+++ b/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
@@ -1,80 +1,55 @@
-package br.com.alura.leilao.ui.recyclerview.adapter;
+package br.com.alura.leilao.ui.recyclerview.adapter
 
-import android.content.Context;
-import android.support.annotation.NonNull;
-import android.support.v7.widget.RecyclerView;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.TextView;
+import android.content.Context
+import android.support.v7.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import br.com.alura.leilao.R
+import br.com.alura.leilao.model.Leilao
 
-import java.util.List;
+class ListaLeilaoAdapter(
+        private val context: Context,
+        private val leiloes: List<Leilao>,
+        private val onItemClickListener: ((Leilao) -> Unit)
+) : RecyclerView.Adapter<ListaLeilaoAdapter.ViewHolder>() {
 
-import br.com.alura.leilao.R;
-import br.com.alura.leilao.model.Leilao;
-
-public class ListaLeilaoAdapter extends RecyclerView.Adapter<ListaLeilaoAdapter.ViewHolder> {
-
-    private final List<Leilao> leiloes;
-    private final Context context;
-    private OnItemClickListener onItemClickListener;
-
-    public ListaLeilaoAdapter(Context context, List<Leilao> leiloes) {
-        this.context = context;
-        this.leiloes = leiloes;
-    }
-
-    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
-        this.onItemClickListener = onItemClickListener;
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val viewCriada = LayoutInflater.from(context).inflate(R.layout.item_leilao, parent, false)
+        return ViewHolder(viewCriada)
     }
 
-    @NonNull
-    @Override
-    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
-        View viewCriada = LayoutInflater.from(context).inflate(R.layout.item_leilao, parent, false);
-        return new ViewHolder(viewCriada);
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val leilao = pegaLeilaoPorPosicao(position)
+        holder.vincula(leilao)
     }
 
-    @Override
-    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
-        Leilao leilao = pegaLeilaoPorPosicao(position);
-        holder.vincula(leilao);
+    override fun getItemCount(): Int {
+        return leiloes.size
     }
 
-    @Override
-    public int getItemCount() {
-        return leiloes.size();
-    }
-
-    class ViewHolder extends RecyclerView.ViewHolder {
-
-        private final TextView descricao;
-        private Leilao leilao;
+    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        private val descricao: TextView = itemView.findViewById(R.id.item_leilao_descricao)
+        private val maiorLance: TextView = itemView.findViewById(R.id.item_leilao_maior_lance)
+        private lateinit var leilao: Leilao
 
-        ViewHolder(View itemView) {
-            super(itemView);
-            descricao = itemView.findViewById(R.id.item_leilao_descricao);
-            itemView.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    onItemClickListener.onItemClick(leilao);
-                }
-            });
+        fun vincula(leilao: Leilao) {
+            this.leilao = leilao
+            descricao.text = leilao.descricao
+            maiorLance.text = context.getString(R.string.valor_maior_lance, leilao.maiorLance)
         }
 
-        void vincula(Leilao leilao) {
-            this.leilao = leilao;
-            descricao.setText(leilao.getDescricao());
+        init {
+            itemView.setOnClickListener { onItemClickListener.invoke(this.leilao) }
         }
-
     }
 
-    public Leilao pegaLeilaoPorPosicao(int posicao) {
-        return this.leiloes.get(posicao);
+    fun pegaLeilaoPorPosicao(posicao: Int): Leilao {
+        return leiloes[posicao]
     }
 
-    public interface OnItemClickListener {
-        void onItemClick(Leilao leilao);
+    interface OnItemClickListener {
+        fun onItemClick(leilao: Leilao?)
     }
-
-}
+}
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5f44f72..d0dd9b9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -4,4 +4,5 @@
     <string name="menor_lance">Menor lance:</string>
     <string name="maiores_lances">Maiores lances</string>
     <string name="imagem_do_leilao">Imagem do leilão</string>
+    <string name="valor_maior_lance">%.2f</string>
 </resources>
diff --git a/build.gradle b/build.gradle
index 43c0708..58bd369 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,14 +1,16 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    
+    ext.kotlin_version = '1.4.10'
+
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.3'
-        
+        classpath 'com.android.tools.build:gradle:4.0.1'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 00f1546..3f1796f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Mon Jun 04 10:48:31 BRT 2018
+#Sun Sep 27 17:31:00 BRT 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip

From 33c94603727763b1a024083a94b51451646c1fdc Mon Sep 17 00:00:00 2001
From: Filipe Bezerra <filipebzerra@gmail.com>
Date: Sun, 27 Sep 2020 18:38:34 -0300
Subject: [PATCH 3/4] Calcula o menor lance

---
 .../java/br/com/alura/leilao/model/Leilao.kt  |  5 ++++
 .../ui/activity/LancesLeilaoActivity.java     | 26 -------------------
 .../ui/activity/LancesLeilaoActivity.kt       | 25 ++++++++++++++++++
 .../leilao/ui/activity/ListaLeilaoActivity.kt |  2 +-
 .../adapter/ListaLeilaoAdapter.kt             | 12 ++++-----
 app/src/main/res/values/strings.xml           |  2 +-
 6 files changed, 38 insertions(+), 34 deletions(-)
 delete mode 100644 app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.java
 create mode 100644 app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.kt

diff --git a/app/src/main/java/br/com/alura/leilao/model/Leilao.kt b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
index 230818b..97e92f6 100644
--- a/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
+++ b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
@@ -7,11 +7,16 @@ class Leilao(val descricao: String) : Serializable {
     private val lances: MutableList<Lance> =  ArrayList()
     var maiorLance: Double = Double.NEGATIVE_INFINITY
         private set
+    var menorLance: Double = Double.POSITIVE_INFINITY
+        private set
 
     fun oferta(lance: Lance) {
         lances.add(lance)
         if (lance.valor > maiorLance) {
             maiorLance = lance.valor
         }
+        if (lance.valor < menorLance) {
+            menorLance = lance.valor
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.java b/app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.java
deleted file mode 100644
index 298d86d..0000000
--- a/app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package br.com.alura.leilao.ui.activity;
-
-import android.content.Intent;
-import android.support.v7.app.AppCompatActivity;
-import android.os.Bundle;
-import android.widget.TextView;
-
-import java.io.Serializable;
-
-import br.com.alura.leilao.R;
-import br.com.alura.leilao.model.Leilao;
-
-public class LancesLeilaoActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_lances_leilao);
-        Intent dadosRecebidos = getIntent();
-        if(dadosRecebidos.hasExtra("leilao")){
-            Leilao leilao = (Leilao) dadosRecebidos.getSerializableExtra("leilao");
-            TextView descricao = findViewById(R.id.lances_leilao_descricao);
-            descricao.setText(leilao.getDescricao());
-        }
-    }
-}
diff --git a/app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.kt b/app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.kt
new file mode 100644
index 0000000..5c4670d
--- /dev/null
+++ b/app/src/main/java/br/com/alura/leilao/ui/activity/LancesLeilaoActivity.kt
@@ -0,0 +1,25 @@
+package br.com.alura.leilao.ui.activity
+
+import android.os.Bundle
+import android.support.v7.app.AppCompatActivity
+import android.widget.TextView
+import br.com.alura.leilao.R
+import br.com.alura.leilao.model.Leilao
+
+class LancesLeilaoActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_lances_leilao)
+        val dadosRecebidos = intent
+        if (dadosRecebidos.hasExtra("leilao")) {
+            val leilao = dadosRecebidos.getSerializableExtra("leilao") as Leilao
+            val descricao = findViewById<TextView>(R.id.lances_leilao_descricao)
+            descricao.text = leilao.descricao
+            val maiorLeilao = findViewById<TextView>(R.id.lances_leilao_maior_lance)
+            maiorLeilao.text = getString(R.string.valor_lance, leilao.maiorLance)
+            val menorLeilao = findViewById<TextView>(R.id.lances_leilao_menor_lance)
+            menorLeilao.text = getString(R.string.valor_lance, leilao.menorLance)
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt b/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
index 1530df9..7914032 100644
--- a/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
+++ b/app/src/main/java/br/com/alura/leilao/ui/activity/ListaLeilaoActivity.kt
@@ -41,7 +41,7 @@ class ListaLeilaoActivity : AppCompatActivity() {
                 usuario = Usuario(nome = "Junior"),
                 valor = 200.0
         ))
-        return ArrayList(Arrays.asList(
+        return ArrayList(listOf(
                 console
         ))
     }
diff --git a/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt b/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
index 982d00a..265b2ce 100644
--- a/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
+++ b/app/src/main/java/br/com/alura/leilao/ui/recyclerview/adapter/ListaLeilaoAdapter.kt
@@ -16,7 +16,11 @@ class ListaLeilaoAdapter(
 ) : RecyclerView.Adapter<ListaLeilaoAdapter.ViewHolder>() {
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val viewCriada = LayoutInflater.from(context).inflate(R.layout.item_leilao, parent, false)
+        val viewCriada = LayoutInflater.from(context).inflate(
+                R.layout.item_leilao,
+                parent,
+                false
+        )
         return ViewHolder(viewCriada)
     }
 
@@ -37,7 +41,7 @@ class ListaLeilaoAdapter(
         fun vincula(leilao: Leilao) {
             this.leilao = leilao
             descricao.text = leilao.descricao
-            maiorLance.text = context.getString(R.string.valor_maior_lance, leilao.maiorLance)
+            maiorLance.text = context.getString(R.string.valor_lance, leilao.maiorLance)
         }
 
         init {
@@ -48,8 +52,4 @@ class ListaLeilaoAdapter(
     fun pegaLeilaoPorPosicao(posicao: Int): Leilao {
         return leiloes[posicao]
     }
-
-    interface OnItemClickListener {
-        fun onItemClick(leilao: Leilao?)
-    }
 }
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d0dd9b9..787f258 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -4,5 +4,5 @@
     <string name="menor_lance">Menor lance:</string>
     <string name="maiores_lances">Maiores lances</string>
     <string name="imagem_do_leilao">Imagem do leilão</string>
-    <string name="valor_maior_lance">%.2f</string>
+    <string name="valor_lance">%.2f</string>
 </resources>

From 63607e5c23079b541727538a0d371d08a323785a Mon Sep 17 00:00:00 2001
From: Filipe Bezerra <filipebzerra@gmail.com>
Date: Tue, 12 Jan 2021 10:42:33 -0300
Subject: [PATCH 4/4] =?UTF-8?q?test:=20Teste=20unit=C3=A1rio=20do=20Leilao?=
 =?UTF-8?q?=20e=20suas=20ofertas?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/br/com/alura/leilao/model/Leilao.kt  |  2 +
 .../br/com/alura/leilao/model/LeilaoTest.kt   | 67 +++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 app/src/test/java/br/com/alura/leilao/model/LeilaoTest.kt

diff --git a/app/src/main/java/br/com/alura/leilao/model/Leilao.kt b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
index 97e92f6..15fbd44 100644
--- a/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
+++ b/app/src/main/java/br/com/alura/leilao/model/Leilao.kt
@@ -5,8 +5,10 @@ import java.util.*
 
 class Leilao(val descricao: String) : Serializable {
     private val lances: MutableList<Lance> =  ArrayList()
+
     var maiorLance: Double = Double.NEGATIVE_INFINITY
         private set
+
     var menorLance: Double = Double.POSITIVE_INFINITY
         private set
 
diff --git a/app/src/test/java/br/com/alura/leilao/model/LeilaoTest.kt b/app/src/test/java/br/com/alura/leilao/model/LeilaoTest.kt
new file mode 100644
index 0000000..d1c4ea0
--- /dev/null
+++ b/app/src/test/java/br/com/alura/leilao/model/LeilaoTest.kt
@@ -0,0 +1,67 @@
+package br.com.alura.leilao.model
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+class LeilaoTest {
+
+    @Test
+    fun dado_leilao_sem_lances_entao_verifica_nome_do_leilao() {
+        val leilaoCarroDeLuxo = Leilao("Carro de luxo")
+        val descricaoLeilaoCarroDeLuxo = leilaoCarroDeLuxo.descricao
+        assertEquals("Carro de luxo", descricaoLeilaoCarroDeLuxo)
+    }
+
+    @Test
+    fun dado_leilao_com_apenas_um_lance_quando_obter_maior_lance_entao_verifica_unico_lance() {
+        val leilaoCarroDeLuxo = Leilao("Carro de luxo")
+        leilaoCarroDeLuxo.oferta(Lance(Usuario("JuniorB"), 100_000.0))
+        assertEquals(100_000.0, leilaoCarroDeLuxo.maiorLance, 0.0001)
+    }
+
+    @Test
+    fun dado_leilao_com_mais_de_um_lance_em_ordem_crescente_quando_obter_maior_lance_entao_verifica_o_maior_lance() {
+        val leilaoComputadorQuantico = Leilao("Computador Quântico")
+        leilaoComputadorQuantico.oferta(Lance(Usuario("Cara misterioso"), 1_000_300.0))
+        leilaoComputadorQuantico.oferta(Lance(Usuario("Jujuba"), 1_100_300.0))
+        leilaoComputadorQuantico.oferta(Lance(Usuario("Maureen Murphy"), 2_000_000.1))
+        assertEquals(2_000_000.1, leilaoComputadorQuantico.maiorLance, 0.0001)
+    }
+
+    @Test
+    fun dado_leilao_com_mais_de_um_lance_em_ordem_decrescente_quando_obter_maior_lance_entao_verifica_o_maior_lance() {
+        val leilaoDeApartamentoDeLuxo = Leilao("Apartamento de Luxo")
+        leilaoDeApartamentoDeLuxo.oferta(Lance(Usuario("Bruna"), 3_500_000.0))
+        leilaoDeApartamentoDeLuxo.oferta(Lance(Usuario("Amanda"), 2_599_000.0))
+        leilaoDeApartamentoDeLuxo.oferta(Lance(Usuario("Jonas"), 1_400_000.0))
+        leilaoDeApartamentoDeLuxo.oferta(Lance(Usuario("Popeye"), 1_350_000.0))
+        leilaoDeApartamentoDeLuxo.oferta(Lance(Usuario("Luna"), 1_050_000.0))
+        assertEquals(3_500_000.0, leilaoDeApartamentoDeLuxo.maiorLance, 0.0001)
+    }
+
+    @Test
+    fun dado_leilao_com_apenas_um_lance_quando_obter_menor_lance_entao_verifica_unico_lance() {
+        val leilaoCarroVoador = Leilao("Carro voador")
+        leilaoCarroVoador.oferta(Lance(Usuario("Fred"), 300.0))
+        assertEquals(300.0, leilaoCarroVoador.menorLance, 0.0001)
+    }
+
+    @Test
+    fun dado_leilao_com_mais_de_um_lance_em_ordem_crescente_quando_obter_menor_lance_entao_verifica_o_menor_lance() {
+        val leilaoDroneDeGuerra = Leilao("Drone de guerra")
+        leilaoDroneDeGuerra.oferta(Lance(Usuario("Sniper"), 89_800.0))
+        leilaoDroneDeGuerra.oferta(Lance(Usuario("Soldado de primeira viagem"), 90_000.0))
+        leilaoDroneDeGuerra.oferta(Lance(Usuario("ThePunisher"), 100_000.0))
+        assertEquals(89_800.0, leilaoDroneDeGuerra.menorLance, 0.0001)
+    }
+
+    @Test
+    fun dado_leilao_com_mais_de_um_lance_em_ordem_decrescente_quando_obter_menor_lance_entao_verifica_o_menor_lance() {
+        val leilaoValorDeFlor = Leilao("Vaso de flor")
+        leilaoValorDeFlor.oferta(Lance(Usuario("Raposo"), 150.0))
+        leilaoValorDeFlor.oferta(Lance(Usuario("Bob Esponja"), 140.0))
+        leilaoValorDeFlor.oferta(Lance(Usuario("Hércules"), 130.0))
+        assertEquals(130.0, leilaoValorDeFlor.menorLance, 0.0001)
+    }
+}
\ No newline at end of file