Add code for tutorial 03

Tutorial_03/.gitignore

@@ -0,0 +1,131 @@
+## Seb's .gitignore template
+# You can find the most up-to-date version at https://go.sebastiano.dev/gitignore
+# Partly based on templates by https://plugins.jetbrains.com/plugin/7495--ignore
+# Released under a CC-0 License https://creativecommons.org/share-your-work/public-domain/cc0/
+
+### Windows template
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+### macOS template
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Linux template
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### JetBrains template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+*.iml
+*.ipr
+*.iws
+/.idea/*
+
+# Exclude non-user-specific stuff
+!.idea/.name
+!.idea/codeInsightSettings.xml
+!.idea/codeStyles/
+!.idea/copyright/
+!.idea/dataSources.xml
+!.idea/detekt.xml
+!.idea/encodings.xml
+!.idea/externalDependencies.xml
+!.idea/file.template.settings.xml
+!.idea/fileTemplates/
+!.idea/icon.svg
+!.idea/inspectionProfiles/
+!.idea/runConfigurations/
+!.idea/scopes/
+!.idea/vcs.xml
+
+### Kotlin template
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+### Gradle template
+.gradle
+
+# Note that you may need to exclude by hand other folders
+# named build if necessary (e.g., in src/)
+**/build/
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle/wrapper/gradle-wrapper.jar
+
+# Cache of project
+.gradletasknamecache

Tutorial_03/README.md

@@ -0,0 +1 @@
+각자 작업하신거 `./{LectureName}/` 폴더 만드시고 PR해주세요

Tutorial_03/app/.gitignore

@@ -0,0 +1 @@
+/build

Tutorial_03/app/build.gradle.kts

@@ -0,0 +1,50 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+}
+
+android {
+    namespace = "com.example.swpp.cloud_code"
+    compileSdk = 36
+
+    defaultConfig {
+        applicationId = "com.example.swpp.cloud_code"
+        minSdk = 24
+        targetSdk = 36
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.material)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+
+    implementation("com.squareup.retrofit2:retrofit:2.9.0")
+    implementation("com.google.code.gson:gson:2.8.9")
+    implementation("com.squareup.retrofit2:converter-gson:2.4.0")
+}

Tutorial_03/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

Tutorial_03/app/src/androidTest/java/com/example/swpp/cloud_code/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package com.example.swpp.cloud_code
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.swpp.cloud_code", appContext.packageName)
+    }
+}

Tutorial_03/app/src/main/AndroidManifest.xml

@@ -0,0 +1,27 @@
+<?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"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme._03_code"
+        android:usesCleartextTraffic="true">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+
+</manifest>

Tutorial_03/app/src/main/java/com/example/swpp/cloud_code/CodeMessageResponse.kt

@@ -0,0 +1,11 @@
+package com.example.swpp.cloud_code
+
+import com.google.gson.annotations.SerializedName
+
+data class CodeMessageResponse(
+    @SerializedName("code")
+    val code: Int,
+
+    @SerializedName("message")
+    val message: String
+)

Tutorial_03/app/src/main/java/com/example/swpp/cloud_code/MainActivity.kt

@@ -0,0 +1,59 @@
+package com.example.swpp.cloud_code
+
+import android.os.Bundle
+import android.widget.Button
+import android.widget.TextView
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+
+class MainActivity : AppCompatActivity() {
+
+    private lateinit var nameInput: TextView
+    private lateinit var idInput: TextView
+    private lateinit var writeButton: Button
+    private lateinit var targetNameInput: TextView
+    private lateinit var readButton: Button
+    private lateinit var targetNameOutput: TextView
+    private lateinit var idText: TextView
+
+    private lateinit var service: ServiceApi
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        nameInput = findViewById(R.id.NameInput)
+        idInput = findViewById(R.id.IdInput)
+        writeButton = findViewById(R.id.WriteBtn)
+        targetNameInput = findViewById(R.id.TargetNameInput)
+        readButton = findViewById(R.id.ReadBtn)
+        targetNameOutput = findViewById(R.id.TargetNameOutput)
+        idText = findViewById(R.id.IdOutput)
+
+        service = RetrofitClient.getClient().create(ServiceApi::class.java)
+
+        writeButton.setOnClickListener {
+            val userName = nameInput.text.toString()
+            val userId = idInput.text.toString()
+
+            val requestData = NameIdData(userName, userId)
+
+            service.userWrite(requestData).enqueue(object : Callback<CodeMessageResponse> {
+                override fun onResponse(
+                    call: Call<CodeMessageResponse>,
+                    response: Response<CodeMessageResponse>
+                ) {
+                    val result = response.body()
+                    Toast.makeText(this@MainActivity, result?.message, Toast.LENGTH_SHORT).show()
+                }
+
+                override fun onFailure(call: Call<CodeMessageResponse>, t: Throwable) {
+                    Toast.makeText(this@MainActivity, "Write Error", Toast.LENGTH_SHORT).show()
+                }
+            })
+        }
+    }
+}

Tutorial_03/app/src/main/java/com/example/swpp/cloud_code/NameIdData.kt

@@ -0,0 +1,11 @@
+package com.example.swpp.cloud_code
+
+import com.google.gson.annotations.SerializedName
+
+data class NameIdData(
+    @SerializedName("userName")
+    val userName: String,
+
+    @SerializedName("userId")
+    val userId: String
+)

Tutorial_03/app/src/main/java/com/example/swpp/cloud_code/RetrofitClient.kt

@@ -0,0 +1,20 @@
+package com.example.swpp.cloud_code
+
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+object RetrofitClient {
+    private const val BASE_URL = "http://ec2-16-184-15-144.ap-northeast-2.compute.amazonaws.com:3000" // TODO: Replace with your actual EC2 endpoint
+
+    private var retrofit: Retrofit? = null
+
+    fun getClient(): Retrofit {
+        if (retrofit == null) {
+            retrofit = Retrofit.Builder()
+                    .baseUrl(BASE_URL)
+                .addConverterFactory(GsonConverterFactory.create())
+                .build()
+        }
+        return retrofit!!
+    }
+}

Tutorial_03/app/src/main/java/com/example/swpp/cloud_code/ServiceApi.kt

@@ -0,0 +1,10 @@
+package com.example.swpp.cloud_code
+
+import retrofit2.Call
+import retrofit2.http.Body
+import retrofit2.http.POST
+
+interface ServiceApi {
+    @POST("/user/write")
+    fun userWrite(@Body data: NameIdData): Call<CodeMessageResponse>
+}