- Created repo list page to fetch the trending git repos

- Created RepoListViewModel and RepoRepository to process the API data
- Using live data and data binding to display data

app/.gitignore

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

app/build.gradle

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+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'androidx.navigation.safeargs'
+apply plugin: 'kotlin-kapt'
+
+android {
+    compileSdkVersion 28
+    defaultConfig {
+        applicationId "com.ankit.trendinggit"
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    dataBinding {
+        enabled = true
+    }
+}
+
+androidExtensions {
+    experimental = true
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
+
+    // Navigation component
+    implementation "android.arch.navigation:navigation-fragment:$rootProject.nav_version" // use -ktx for Kotlin
+    implementation "android.arch.navigation:navigation-ui:$rootProject.nav_version" // use -ktx for Kotlin
+    implementation "android.arch.navigation:navigation-runtime-ktx:$rootProject.nav_version" // use -ktx for Kotlin
+    implementation "android.arch.work:work-runtime-ktx:$rootProject.workVersion" // use -ktx for Kotlin
+
+    // Anko
+    implementation "org.jetbrains.anko:anko:$rootProject.anko_version"
+    implementation "org.jetbrains.anko:anko-commons:$rootProject.anko_version"
+
+    // Retrofit
+    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:3.9.1'
+
+    // Databinding compiler
+    kapt 'com.android.databinding:compiler:3.2.0-alpha10'
+}
+
+kotlin {
+    experimental {
+        coroutines "enable"
+    }
+}

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

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="com.ankit.trendinggit">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="false"
+        android:icon="@drawable/git_icon"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme"
+        tools:ignore="GoogleAppIndexingWarning">
+        <activity
+            android:name="com.ankit.trendinggit.view.ui.MainActivity"
+            android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/ankit/trendinggit/TrendingGitApp.kt

@@ -0,0 +1,15 @@
+package com.ankit.trendinggit
+
+import android.app.Application
+
+class TrendingGitApp : Application() {
+
+    override fun onCreate() {
+        super.onCreate()
+        instance = this
+    }
+
+    companion object {
+        lateinit var instance: TrendingGitApp
+    }
+}

app/src/main/java/com/ankit/trendinggit/model/ApiResponse.kt

@@ -0,0 +1,112 @@
+package com.ankit.trendinggit.model
+
+data class GitResponse(
+        val total_count: Int,
+        val incomplete_results: Boolean,
+        val items: List<Item>
+)
+
+data class Item(
+        val id: Int,
+        val node_id: String,
+        val name: String,
+        val full_name: String,
+        val owner: Owner,
+        val private: Boolean,
+        val html_url: String,
+        val description: String,
+        val fork: Boolean,
+        val url: String,
+        val forks_url: String,
+        val keys_url: String,
+        val collaborators_url: String,
+        val teams_url: String,
+        val hooks_url: String,
+        val issue_events_url: String,
+        val events_url: String,
+        val assignees_url: String,
+        val branches_url: String,
+        val tags_url: String,
+        val blobs_url: String,
+        val git_tags_url: String,
+        val git_refs_url: String,
+        val trees_url: String,
+        val statuses_url: String,
+        val languages_url: String,
+        val stargazers_url: String,
+        val contributors_url: String,
+        val subscribers_url: String,
+        val subscription_url: String,
+        val commits_url: String,
+        val git_commits_url: String,
+        val comments_url: String,
+        val issue_comment_url: String,
+        val contents_url: String,
+        val compare_url: String,
+        val merges_url: String,
+        val archive_url: String,
+        val downloads_url: String,
+        val issues_url: String,
+        val pulls_url: String,
+        val milestones_url: String,
+        val notifications_url: String,
+        val labels_url: String,
+        val releases_url: String,
+        val deployments_url: String,
+        val created_at: String,
+        val updated_at: String,
+        val pushed_at: String,
+        val git_url: String,
+        val ssh_url: String,
+        val clone_url: String,
+        val svn_url: String,
+        val homepage: String,
+        val size: Int,
+        val stargazers_count: Int,
+        val watchers_count: Int,
+        val language: String,
+        val has_issues: Boolean,
+        val has_projects: Boolean,
+        val has_downloads: Boolean,
+        val has_wiki: Boolean,
+        val has_pages: Boolean,
+        val forks_count: Int,
+        val mirror_url: Any,
+        val archived: Boolean,
+        val open_issues_count: Int,
+        val license: License,
+        val forks: Int,
+        val open_issues: Int,
+        val watchers: Int,
+        val default_branch: String,
+        val score: Double
+)
+
+data class Owner(
+        val login: String,
+        val id: Int,
+        val node_id: String,
+        val avatar_url: String,
+        val gravatar_id: String,
+        val url: String,
+        val html_url: String,
+        val followers_url: String,
+        val following_url: String,
+        val gists_url: String,
+        val starred_url: String,
+        val subscriptions_url: String,
+        val organizations_url: String,
+        val repos_url: String,
+        val events_url: String,
+        val received_events_url: String,
+        val type: String,
+        val site_admin: Boolean
+)
+
+data class License(
+        val key: String,
+        val name: String,
+        val spdx_id: String,
+        val url: String,
+        val node_id: String
+)

app/src/main/java/com/ankit/trendinggit/model/api/ApiClient.kt

@@ -0,0 +1,54 @@
+package com.ankit.trendinggit.model.api
+
+import com.ankit.trendinggit.view.utils.Constants.Companion.BASE_URL
+import com.ankit.trendinggit.view.utils.Constants.Companion.DEBUG
+import com.ankit.trendinggit.view.utils.Constants.Companion.REQUEST_TIMEOUT_DURATION
+import com.google.gson.GsonBuilder
+import okhttp3.Interceptor
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import java.util.concurrent.TimeUnit
+
+object ApiClient {
+
+    val instance: ApiService = Retrofit.Builder().run {
+        val gson = GsonBuilder()
+                .enableComplexMapKeySerialization()
+                .setPrettyPrinting()
+                .create()
+
+        baseUrl(BASE_URL)
+        addConverterFactory(GsonConverterFactory.create(gson))
+        client(createRequestInterceptorClient())
+        build()
+    }.create(ApiService::class.java)
+
+
+    private fun createRequestInterceptorClient(): OkHttpClient {
+        val interceptor = Interceptor { chain ->
+            val original = chain.request()
+            val requestBuilder = original.newBuilder()
+            val request = requestBuilder.build()
+            chain.proceed(request)
+        }
+
+        return if (DEBUG) {
+            OkHttpClient.Builder()
+                    .addInterceptor(interceptor)
+                    .addInterceptor(HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY))
+                    .connectTimeout(REQUEST_TIMEOUT_DURATION.toLong(), TimeUnit.SECONDS)
+                    .readTimeout(REQUEST_TIMEOUT_DURATION.toLong(), TimeUnit.SECONDS)
+                    .writeTimeout(REQUEST_TIMEOUT_DURATION.toLong(), TimeUnit.SECONDS)
+                    .build()
+        } else {
+            OkHttpClient.Builder()
+                    .addInterceptor(interceptor)
+                    .connectTimeout(REQUEST_TIMEOUT_DURATION.toLong(), TimeUnit.SECONDS)
+                    .readTimeout(REQUEST_TIMEOUT_DURATION.toLong(), TimeUnit.SECONDS)
+                    .writeTimeout(REQUEST_TIMEOUT_DURATION.toLong(), TimeUnit.SECONDS)
+                    .build()
+        }
+    }
+}

app/src/main/java/com/ankit/trendinggit/model/api/ApiService.kt

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+package com.ankit.trendinggit.model.api
+
+import com.ankit.trendinggit.model.GitResponse
+import retrofit2.Call
+import retrofit2.http.GET
+import retrofit2.http.Query
+
+interface ApiService {
+
+    @GET("search/repositories")
+    fun getRepo(@Query("q") search: String = "trending"): Call<GitResponse>
+}

app/src/main/java/com/ankit/trendinggit/model/api/RepoRepository.kt

@@ -0,0 +1,34 @@
+package com.ankit.trendinggit.model.api
+
+import com.ankit.trendinggit.model.GitResponse
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+
+class RepoRepository {
+
+    // GET repo list
+    fun getRepoList(onResult: (isSuccess: Boolean, response: GitResponse?) -> Unit) {
+
+        ApiClient.instance.getRepo().enqueue(object :Callback<GitResponse> {
+            override fun onResponse(call: Call<GitResponse>?, response: Response<GitResponse>?) {
+                if (response != null && response.isSuccessful)
+                    onResult(true, response.body()!!)
+                else
+                    onResult(false, null)
+                }
+
+            override fun onFailure(call: Call<GitResponse>?, t: Throwable?) {
+                onResult(false, null)
+            }
+
+        })
+    }
+
+    companion object {
+        private var INSTANCE: RepoRepository? = null
+        fun getInstance() = INSTANCE ?: RepoRepository().also {
+            INSTANCE = it
+        }
+    }
+}

app/src/main/java/com/ankit/trendinggit/view/adapter/RepoListAdapter.kt

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+package com.ankit.trendinggit.view.adapter
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.ankit.trendinggit.databinding.ViewRepoListItemBinding
+import com.ankit.trendinggit.model.Item
+import com.ankit.trendinggit.view.adapter.viewHolders.RepoListViewHolder
+import com.ankit.trendinggit.view.ui.repolist.RepoListViewModel
+
+class RepoListAdapter(private val repoListViewModel: RepoListViewModel) : RecyclerView.Adapter<RepoListViewHolder>() {
+    var repoList: List<Item> = emptyList()
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RepoListViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val dataBinding = ViewRepoListItemBinding.inflate(inflater, parent, false)
+        return RepoListViewHolder(dataBinding, repoListViewModel)
+    }
+
+    override fun getItemCount() = repoList.size
+
+    override fun onBindViewHolder(holder: RepoListViewHolder, position: Int) {
+        holder.setup(repoList[position])
+    }
+
+    fun updateRepoList(repoList: List<Item>) {
+        this.repoList = repoList
+        notifyDataSetChanged()
+    }
+}