From 9825ca5b8d921586f641342a6e2577d395c368b3 Mon Sep 17 00:00:00 2001
From: GauthamAsir <gauthamasir@gmail.com>
Date: Tue, 28 Apr 2020 17:46:19 +0530
Subject: [PATCH] Use Prebuilt Library for App Updates

Signed-off-by: GauthamAsir <gauthamasir@gmail.com>
---
 .idea/gradle.xml                              |   1 +
 .idea/misc.xml                                |   2 +-
 app/build.gradle                              |  10 +-
 app/src/main/AndroidManifest.xml              |   5 +-
 .../statusdownloader/MainActivity.java        |  15 +-
 build.gradle                                  |   2 +-
 library/.gitignore                            |   1 +
 library/build.gradle                          |  52 ++
 library/consumer-rules.pro                    |   0
 library/proguard-rules.pro                    |  21 +
 .../library/ExampleInstrumentedTest.java      |  27 ++
 library/src/main/AndroidManifest.xml          |  21 +
 .../java/a/gautham/library/AppUpdater.java    | 445 ++++++++++++++++++
 .../main/java/a/gautham/library/Display.java  |   7 +
 .../a/gautham/library/DownloadDialog.java     |  74 +++
 .../library/helper/ServiceGenerator.java      |  19 +
 .../gautham/library/models/AssestsModel.java  |  50 ++
 .../a/gautham/library/models/GitRelease.java  |  85 ++++
 .../java/a/gautham/library/models/Update.java | 101 ++++
 .../library/service/GithubService.java        |  12 +
 .../main/res/drawable/ic_system_update.xml    |   9 +
 .../src/main/res/layout/download_layout.xml   |  58 +++
 library/src/main/res/values/app_updater.xml   |  14 +
 library/src/main/res/values/colors.xml        |   6 +
 library/src/main/res/values/styles.xml        |   7 +
 library/src/main/res/xml/filepaths.xml        |   4 +
 .../a/gautham/library/ExampleUnitTest.java    |  17 +
 settings.gradle                               |   2 +-
 28 files changed, 1050 insertions(+), 17 deletions(-)
 create mode 100644 library/.gitignore
 create mode 100644 library/build.gradle
 create mode 100644 library/consumer-rules.pro
 create mode 100644 library/proguard-rules.pro
 create mode 100644 library/src/androidTest/java/a/gautham/library/ExampleInstrumentedTest.java
 create mode 100644 library/src/main/AndroidManifest.xml
 create mode 100644 library/src/main/java/a/gautham/library/AppUpdater.java
 create mode 100644 library/src/main/java/a/gautham/library/Display.java
 create mode 100644 library/src/main/java/a/gautham/library/DownloadDialog.java
 create mode 100644 library/src/main/java/a/gautham/library/helper/ServiceGenerator.java
 create mode 100644 library/src/main/java/a/gautham/library/models/AssestsModel.java
 create mode 100644 library/src/main/java/a/gautham/library/models/GitRelease.java
 create mode 100644 library/src/main/java/a/gautham/library/models/Update.java
 create mode 100644 library/src/main/java/a/gautham/library/service/GithubService.java
 create mode 100644 library/src/main/res/drawable/ic_system_update.xml
 create mode 100644 library/src/main/res/layout/download_layout.xml
 create mode 100644 library/src/main/res/values/app_updater.xml
 create mode 100644 library/src/main/res/values/colors.xml
 create mode 100644 library/src/main/res/values/styles.xml
 create mode 100644 library/src/main/res/xml/filepaths.xml
 create mode 100644 library/src/test/java/a/gautham/library/ExampleUnitTest.java

diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 5cd135a..f05a1d5 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -11,6 +11,7 @@
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
+            <option value="$PROJECT_DIR$/library" />
           </set>
         </option>
         <option name="resolveModulePerSourceSet" value="false" />
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 37a7509..7bfef59 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/build.gradle b/app/build.gradle
index 977145c..a9033d1 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,7 +9,7 @@ android {
         minSdkVersion 21
         targetSdkVersion 29
         versionCode 2
-        versionName "2.7"
+        versionName "2.6"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
@@ -21,6 +21,11 @@ android {
         }
     }
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
 }
 
 dependencies {
@@ -39,7 +44,6 @@ dependencies {
 
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.0.0'
     implementation 'de.hdodenhof:circleimageview:3.1.0'
-
-    implementation 'com.github.javiersantos:AppUpdater:2.7'
+    implementation project(path: ':library')
 
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index a167fd4..45eda2a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,5 +1,6 @@
 <?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="a.gautham.statusdownloader">
 
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
@@ -28,10 +29,12 @@
             android:name="androidx.core.content.FileProvider"
             android:authorities="a.gautham.statusdownloader.provider"
             android:exported="false"
+            tools:replace="android:authorities"
             android:grantUriPermissions="true">
             <meta-data
                 android:name="android.support.FILE_PROVIDER_PATHS"
-                android:resource="@xml/provider_paths" />
+                android:resource="@xml/provider_paths"
+                tools:replace="android:resource"/>
         </provider>
     </application>
 
diff --git a/app/src/main/java/a/gautham/statusdownloader/MainActivity.java b/app/src/main/java/a/gautham/statusdownloader/MainActivity.java
index 7ce1f3c..91e6b5a 100644
--- a/app/src/main/java/a/gautham/statusdownloader/MainActivity.java
+++ b/app/src/main/java/a/gautham/statusdownloader/MainActivity.java
@@ -20,9 +20,6 @@
 import androidx.viewpager.widget.PagerAdapter;
 import androidx.viewpager.widget.ViewPager;
 
-import com.github.javiersantos.appupdater.AppUpdater;
-import com.github.javiersantos.appupdater.enums.Display;
-import com.github.javiersantos.appupdater.enums.UpdateFrom;
 import com.google.android.material.appbar.MaterialToolbar;
 import com.google.android.material.snackbar.Snackbar;
 import com.google.android.material.tabs.TabLayout;
@@ -30,6 +27,8 @@
 import java.io.File;
 import java.util.Objects;
 
+import a.gautham.library.AppUpdater;
+import a.gautham.library.Display;
 import a.gautham.statusdownloader.Adapter.PageAdapter;
 import a.gautham.statusdownloader.Utils.Common;
 
@@ -170,13 +169,9 @@ private class GetLatestAppVersion extends AsyncTask{
         @Override
         protected Object doInBackground(Object[] objects) {
 
-            final AppUpdater appUpdater = new AppUpdater(MainActivity.this)
-                    .setDisplay(Display.DIALOG)
-                    .setUpdateFrom(UpdateFrom.XML)
-                    .setUpdateXML("https://raw.githubusercontent.com/GauthamAsir/WhatsApp_Status_Saver/master/update.xml")
-                    .setCancelable(false)
-                    .setButtonDoNotShowAgain(null);
-
+            AppUpdater appUpdater = new AppUpdater(MainActivity.this);
+            appUpdater.setDisplay(Display.DIALOG);
+            appUpdater.setUpGithub("GauthamAsir","WhatsApp_Status_Saver");
             appUpdater.start();
 
             return null;
diff --git a/build.gradle b/build.gradle
index b99ecae..bb6000c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
     repositories {
         google()
         jcenter()
-        
+
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.6.3'
diff --git a/library/.gitignore b/library/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/library/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/library/build.gradle b/library/build.gradle
new file mode 100644
index 0000000..c47842b
--- /dev/null
+++ b/library/build.gradle
@@ -0,0 +1,52 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.3"
+
+    defaultConfig {
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles 'consumer-rules.pro'
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+
+    //RetroFit
+    implementation 'com.squareup.retrofit2:retrofit:2.8.1'
+    implementation 'com.squareup.retrofit2:converter-gson:2.8.1'
+
+    //Recycler View
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+
+    //Card View
+    implementation 'androidx.cardview:cardview:1.0.0'
+
+    //Material Themes
+    implementation 'com.google.android.material:material:1.1.0'
+
+}
diff --git a/library/consumer-rules.pro b/library/consumer-rules.pro
new file mode 100644
index 0000000..e69de29
diff --git a/library/proguard-rules.pro b/library/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/library/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
diff --git a/library/src/androidTest/java/a/gautham/library/ExampleInstrumentedTest.java b/library/src/androidTest/java/a/gautham/library/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..2dcfc45
--- /dev/null
+++ b/library/src/androidTest/java/a/gautham/library/ExampleInstrumentedTest.java
@@ -0,0 +1,27 @@
+package a.gautham.library;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+
+        assertEquals("a.gautham.library.test", appContext.getPackageName());
+    }
+}
diff --git a/library/src/main/AndroidManifest.xml b/library/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..8d8989a
--- /dev/null
+++ b/library/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="a.gautham.library" >
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
+    <application>
+
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/filepaths"/>
+        </provider>
+
+    </application>
+</manifest>
diff --git a/library/src/main/java/a/gautham/library/AppUpdater.java b/library/src/main/java/a/gautham/library/AppUpdater.java
new file mode 100644
index 0000000..e2599da
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/AppUpdater.java
@@ -0,0 +1,445 @@
+package a.gautham.library;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.PowerManager;
+import android.util.Log;
+import android.widget.Toast;
+
+import androidx.core.content.FileProvider;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.lang.ref.WeakReference;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import a.gautham.library.helper.ServiceGenerator;
+import a.gautham.library.models.AssestsModel;
+import a.gautham.library.models.GitRelease;
+import a.gautham.library.models.Update;
+import a.gautham.library.service.GithubService;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+public class AppUpdater {
+
+    private Context context;
+    private String dialogTitle, dialogMessage, dialogBtnPositiveText, dialogBtnNegativeText, gitUsername, gitRepoName;
+    private boolean dialogCancelable;
+    private int dialogAlertStyle, dialog_icon;
+    private UpdateListener updateListener;
+    private UtilsAsync utilsAsync;
+    private static final String TAG = "AppUpdater: ";
+    private static DownloadTask downloadTask;
+    private Display display;
+
+    public AppUpdater(Context context) {
+        this.context = context;
+
+        // DIALOG
+        this.dialogTitle = context.getString(R.string.app_updater_new_update_available);
+        this.dialogBtnPositiveText = context.getString(R.string.app_updater_update);
+        this.dialogBtnNegativeText = context.getString(R.string.app_updater_cancel);
+        this.dialogMessage = "";
+        this.dialogCancelable = false;
+        this.dialog_icon = R.drawable.ic_system_update;
+        this.dialogAlertStyle = R.style.dialogAlertStyle;
+
+        this.updateListener = new UpdateListener() {
+            @Override
+            public void onSuccess(Update update, boolean isUpdateAvailable) {
+                if (isUpdateAvailable){
+
+                    if (display == Display.DIALOG)
+                        showDialog(update);
+
+                }
+            }
+
+            @Override
+            public void onFailed(String error) {
+
+            }
+        };
+
+    }
+
+    public interface UpdateListener{
+
+        void onSuccess(Update update, boolean isUpdateAvailable);
+
+        void onFailed(String error);
+    }
+
+    public AppUpdater withListener(UpdateListener updateListener){
+        this.updateListener = updateListener;
+        return this;
+    }
+
+    public AppUpdater setDialogTitle(String dialogTitle) {
+        this.dialogTitle = dialogTitle;
+        return this;
+    }
+
+    public AppUpdater setDialogMessage(String dialogMessage) {
+        this.dialogMessage = dialogMessage;
+        return this;
+    }
+
+    public AppUpdater setDialogBtnPositive(String dialogBtnPositive) {
+        this.dialogBtnPositiveText = dialogBtnPositive;
+        return this;
+    }
+
+    public AppUpdater setDialogBtnNegative(String dialogBtnNegative) {
+        this.dialogBtnNegativeText = dialogBtnNegative;
+        return this;
+    }
+
+    public AppUpdater setDialogCancelable(boolean dialogCancelable) {
+        this.dialogCancelable = dialogCancelable;
+        return this;
+    }
+
+    public AppUpdater setDialogAlertStyle(int dialogAlertStyle) {
+        this.dialogAlertStyle = dialogAlertStyle;
+        return this;
+    }
+
+    public AppUpdater setDialog_icon(int dialog_icon) {
+        this.dialog_icon = dialog_icon;
+        return this;
+    }
+
+    public AppUpdater setUpGithub(String gitUsername, String gitRepoName){
+        this.gitUsername = gitUsername;
+        this.gitRepoName = gitRepoName;
+        return this;
+    }
+
+    public void setDisplay(Display display) {
+        this.display = display;
+    }
+
+    public void start(){
+
+        utilsAsync = new UtilsAsync(context, gitUsername, gitRepoName, updateListener);
+        utilsAsync.execute();
+
+    }
+
+    static class UtilsAsync extends AsyncTask{
+
+        private WeakReference<Context> contextRef;
+        private String gitUsername, gitRepoName;
+        private UpdateListener updateListener;
+        private Update update1;
+
+        UtilsAsync(Context context, String gitUsername, String gitRepoName, UpdateListener updateListener) {
+            this.contextRef = new WeakReference<>(context);
+            this.gitUsername = gitUsername;
+            this.gitRepoName = gitRepoName;
+            this.updateListener = updateListener;
+        }
+
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+
+            Context context = contextRef.get();
+            if (context == null || updateListener == null){
+                cancel(true);
+            }else if (isNetworkAvailable(context)){
+                if (!isGitHubValid(gitUsername, gitRepoName)){
+                    updateListener.onFailed(context.getString(R.string.app_updater_git_empty));
+                    cancel(true);
+                }
+            }else {
+                updateListener.onFailed(context.getString(R.string.app_updater_no_internet));
+                cancel(true);
+            }
+
+        }
+
+        @Override
+        protected Object doInBackground(Object[] objects) {
+
+            try {
+                Call<GitRelease> callAsync;
+                GithubService githubService = ServiceGenerator.build().create(GithubService.class);
+                callAsync = githubService.getReleases(gitUsername, gitRepoName);
+
+                callAsync.enqueue(new Callback<GitRelease>() {
+                    @Override
+                    public void onResponse(Call<GitRelease> call, Response<GitRelease> response) {
+
+                        if (response.code() == 200){
+
+                            GitRelease releases = response.body();
+                            AssestsModel assestsModel = releases.getAssestsModels().get(0);
+
+                            double size = assestsModel.getSize();
+                            double fileSizeInKB = size / 1024;
+                            double fileSizeInMB = fileSizeInKB / 1024;
+                            double fileSizeInGb = fileSizeInMB / 1024;
+
+                            Update update = new Update(assestsModel.getDownload_url(),
+                                    assestsModel.getAssest_name(),
+                                    releases.getRelease_title(),
+                                    releases.getRelease_description(),
+                                    releases.getRelease_tag_name(),
+                                    assestsModel.getDownload_count(),
+                                    assestsModel.getSize(), fileSizeInKB, fileSizeInMB, fileSizeInGb);
+                            update1 = update;
+
+                            double currentAppversion = Double.parseDouble(getAppVersion(contextRef.get()));
+                            double latestAppversion = Double.parseDouble(releases.getRelease_tag_name());
+
+                            updateListener.onSuccess(update,isUpdateAvailable(currentAppversion, latestAppversion));
+
+                        }else {
+                            updateListener.onFailed("Failed: " + response.message());
+                            cancel(true);
+                        }
+
+                    }
+
+                    @Override
+                    public void onFailure(Call<GitRelease> call, Throwable t) {
+                        Log.e(TAG + "Error: ",t.getMessage());
+                        updateListener.onFailed("Error: "+ t.getMessage());
+                        cancel(true);
+                    }
+                });
+
+            }catch (Exception e){
+                Log.e(TAG + "Failed: ",e.getMessage());
+                updateListener.onFailed("Failed: "+ e.getMessage());
+                cancel(true);
+            }
+
+            return null;
+        }
+
+        @Override
+        protected void onPostExecute(Object o) {
+            super.onPostExecute(o);
+
+
+        }
+    }
+
+    private void showDialog(Update update1) {
+
+        AlertDialog.Builder builder =
+                new AlertDialog.Builder(context, dialogAlertStyle)
+                .setTitle(dialogTitle)
+                .setCancelable(dialogCancelable)
+                .setIcon(dialog_icon);
+
+        if (dialogMessage.isEmpty()){
+            builder.setMessage(String.format("New Update %s is Available. By Downloading the latest " +
+                    "update, you will get the latest features, " +
+                    "improvements and bug fixes. Do you want to Update App?",update1.getLatest_version()));
+        }else {
+            builder.setMessage(dialogMessage);
+        }
+
+        builder.setPositiveButton(dialogBtnPositiveText, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                downloadTask = new DownloadTask(context, update1);
+                downloadTask.execute(update1.getDownloadUrl());
+            }
+        });
+        builder.setNegativeButton(dialogBtnNegativeText, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                dialog.dismiss();
+            }
+        });
+
+        builder.show();
+    }
+
+    public void stop(){
+        if (utilsAsync != null && utilsAsync.isCancelled()){
+            utilsAsync.cancel(true);
+        }
+    }
+
+    private static boolean isGitHubValid(String gitUsername, String gitRepoName) {
+
+        if (gitUsername == null || gitRepoName == null){
+            return false;
+        }else
+            return !gitUsername.isEmpty() && !gitRepoName.isEmpty() && gitUsername.length() != 0 && gitRepoName.length() != 0;
+    }
+
+    private static boolean isUpdateAvailable(double currentAppversion, double latestAppversion){
+
+        return currentAppversion < latestAppversion;
+    }
+
+    static Boolean isNetworkAvailable(Context context) {
+        Boolean res = false;
+        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        if (cm != null) {
+            NetworkInfo networkInfo = cm.getActiveNetworkInfo();
+            if (networkInfo != null) {
+                res = networkInfo.isConnected();
+            }
+        }
+
+        return res;
+    }
+
+    private static String getAppVersion(Context context){
+
+        String result = "";
+        try {
+            result = context.getPackageManager().getPackageInfo(context.getPackageName(),0)
+                    .versionName;
+            result = result.replaceAll("[a-zA-Z]|-","");
+        }catch (PackageManager.NameNotFoundException e) {
+            e.printStackTrace();
+        }
+        return result;
+    }
+
+    private static class DownloadTask extends AsyncTask<String, Integer, String> {
+
+        private WeakReference<Context> contextRef;
+        private String app_name;
+        private PowerManager.WakeLock mWakeLock;
+        private DownloadDialog downloadDialog;
+
+        DownloadTask(Context context, Update update) {
+            this.contextRef = new WeakReference<>(context);
+            this.app_name = update.getAsset_name();
+            downloadDialog = new DownloadDialog(contextRef.get());
+            downloadDialog.setDownloadName(update.getAsset_name());
+            downloadDialog.setDownloadSize(update.getAsses_sizeMb()+"MB");
+            downloadDialog.setNegativeBtnListener(new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialog, int which) {
+                    dialog.dismiss();
+                    cancel(true);
+                }
+            });
+        }
+
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+            PowerManager pm = (PowerManager) contextRef.get().getSystemService(Context.POWER_SERVICE);
+            mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
+                    getClass().getName());
+            mWakeLock.acquire();
+            downloadDialog.show();
+        }
+
+        @Override
+        protected String doInBackground(String... sUrl) {
+            InputStream input = null;
+            OutputStream output = null;
+            HttpURLConnection connection = null;
+
+            try {
+                URL url = new URL(sUrl[0]);
+                connection = (HttpURLConnection) url.openConnection();
+                connection.connect();
+
+                // expect HTTP 200 OK, so we don't mistakenly save error report
+                // instead of the file
+                if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
+                    return "Server returned HTTP " + connection.getResponseCode()
+                            + " " + connection.getResponseMessage();
+                }
+
+                // this will be useful to display download percentage
+                // might be -1: server did not report the length
+                int fileLength = connection.getContentLength();
+
+                // download the file
+                input = connection.getInputStream();
+                output = new FileOutputStream(contextRef.get().getExternalFilesDir(null).getAbsolutePath() + "/"+app_name);
+
+                byte[] data = new byte[4096];
+                long total = 0;
+                int count;
+                while ((count = input.read(data)) != -1) {
+                    // allow canceling with back button
+                    if (isCancelled()) {
+                        input.close();
+                        return null;
+                    }
+                    total += count;
+                    // publishing the progress....
+                    if (fileLength > 0) // only if total length is known
+                        publishProgress((int) (total * 100 / fileLength));
+                    output.write(data, 0, count);
+
+                }
+            } catch (Exception e) {
+                return e.toString();
+            } finally {
+                try {
+                    if (output != null)
+                        output.close();
+                    if (input != null)
+                        input.close();
+                } catch (IOException ignored) {
+                }
+
+                if (connection != null)
+                    connection.disconnect();
+            }
+            return null;
+        }
+
+        @Override
+        protected void onProgressUpdate(Integer... progress) {
+            super.onProgressUpdate(progress);
+
+            downloadDialog.setProgressPercent(progress[0] + "%");
+            downloadDialog.setProgressBaPercent(progress[0]);
+        }
+
+        @Override
+        protected void onPostExecute(String result) {
+
+            mWakeLock.release();
+            downloadDialog.hide();
+            if (result != null){
+                Toast.makeText(contextRef.get(),R.string.app_updater_download_error+result, Toast.LENGTH_LONG).show();
+            }
+            else{
+
+                Toast.makeText(contextRef.get(),R.string.app_updater_update_downloaded, Toast.LENGTH_SHORT).show();
+
+                File file = new File(contextRef.get().getExternalFilesDir(null).getAbsolutePath()
+                        + "/" + app_name);
+                Uri data = FileProvider.getUriForFile(contextRef.get(), contextRef.get().getPackageName() +".provider",file);
+
+                Intent installAPK = new Intent(Intent.ACTION_INSTALL_PACKAGE);
+                installAPK.setDataAndType(data,"application/vnd.android.package-archive");
+                installAPK.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+                contextRef.get().startActivity(installAPK);
+            }
+        }
+    }
+
+}
diff --git a/library/src/main/java/a/gautham/library/Display.java b/library/src/main/java/a/gautham/library/Display.java
new file mode 100644
index 0000000..a209cca
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/Display.java
@@ -0,0 +1,7 @@
+package a.gautham.library;
+
+public enum Display {
+    DIALOG,
+    SNACKBAR,
+    NOTIFICATION
+}
\ No newline at end of file
diff --git a/library/src/main/java/a/gautham/library/DownloadDialog.java b/library/src/main/java/a/gautham/library/DownloadDialog.java
new file mode 100644
index 0000000..36a3266
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/DownloadDialog.java
@@ -0,0 +1,74 @@
+package a.gautham.library;
+
+import android.app.AlertDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+
+public class DownloadDialog extends AlertDialog {
+
+    private int progressBaPercent;
+    private DialogInterface.OnClickListener negativeBtnListener;
+    private AlertDialog alertDialog;
+    private TextView percent_pg, download_name, download_size;
+    private ProgressBar progressBar;
+
+    DownloadDialog(@NonNull Context context) {
+        super(context);
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(context, R.style.dialogAlertStyle);
+        builder.setCancelable(false);
+
+        View view = LayoutInflater.from(context).inflate(R.layout.download_layout, null);
+        builder.setView(view);
+
+        progressBar = view.findViewById(R.id.progressBar);
+        download_name = view.findViewById(R.id.download_name);
+        download_size = view.findViewById(R.id.download_size);
+        percent_pg = view.findViewById(R.id.percent_pg);
+        builder.setTitle(R.string.app_updater_downloading);
+        builder.setIcon(R.drawable.ic_system_update);
+
+        progressBar.setMax(100);
+        progressBar.setIndeterminate(false);
+        progressBar.setProgress(progressBaPercent);
+
+        builder.setNegativeButton("Cancel",negativeBtnListener);
+
+        alertDialog = builder.create();
+
+    }
+
+    void setDownloadName(String downloadName) {
+        download_name.setText(downloadName);
+    }
+
+    void setDownloadSize(String downloadSize) {
+        download_size.setText(downloadSize);
+    }
+
+    void setProgressPercent(String progressPercent) {
+        percent_pg.setText(progressPercent);
+    }
+
+    void setProgressBaPercent(int progressBaPercent) {
+        progressBar.setProgress(progressBaPercent);
+    }
+
+    void setNegativeBtnListener(OnClickListener negativeBtn) {
+        this.negativeBtnListener = negativeBtn;
+    }
+
+    public void show(){
+        alertDialog.show();
+    }
+
+    public void hide(){
+        alertDialog.dismiss();
+    }
+}
diff --git a/library/src/main/java/a/gautham/library/helper/ServiceGenerator.java b/library/src/main/java/a/gautham/library/helper/ServiceGenerator.java
new file mode 100644
index 0000000..6f1fa95
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/helper/ServiceGenerator.java
@@ -0,0 +1,19 @@
+package a.gautham.library.helper;
+
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+
+public class ServiceGenerator {
+
+    private static final String GITHUB_BASE_URL = "https://api.github.com/";
+
+    public static Retrofit build(){
+        Retrofit.Builder builder = new Retrofit.Builder();
+        builder.baseUrl(GITHUB_BASE_URL);
+        builder.addConverterFactory(GsonConverterFactory.create());
+
+        Retrofit retrofit = builder.build();
+        return retrofit;
+    }
+
+}
diff --git a/library/src/main/java/a/gautham/library/models/AssestsModel.java b/library/src/main/java/a/gautham/library/models/AssestsModel.java
new file mode 100644
index 0000000..4cfdcb1
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/models/AssestsModel.java
@@ -0,0 +1,50 @@
+package a.gautham.library.models;
+
+import com.google.gson.annotations.SerializedName;
+
+public class AssestsModel {
+
+    @SerializedName("browser_download_url")
+    private String download_url;
+
+    @SerializedName("download_count")
+    private long download_count;
+
+    @SerializedName("size")
+    private long size;
+
+    @SerializedName("name")
+    private String assest_name;
+
+    public String getDownload_url() {
+        return download_url;
+    }
+
+    public void setDownload_url(String download_url) {
+        this.download_url = download_url;
+    }
+
+    public long getDownload_count() {
+        return download_count;
+    }
+
+    public void setDownload_count(long download_count) {
+        this.download_count = download_count;
+    }
+
+    public long getSize() {
+        return size;
+    }
+
+    public void setSize(long size) {
+        this.size = size;
+    }
+
+    public String getAssest_name() {
+        return assest_name;
+    }
+
+    public void setAssest_name(String assest_name) {
+        this.assest_name = assest_name;
+    }
+}
diff --git a/library/src/main/java/a/gautham/library/models/GitRelease.java b/library/src/main/java/a/gautham/library/models/GitRelease.java
new file mode 100644
index 0000000..9913c32
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/models/GitRelease.java
@@ -0,0 +1,85 @@
+package a.gautham.library.models;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.util.List;
+
+public class GitRelease {
+
+    @SerializedName("name")
+    private String release_title;
+
+    @SerializedName("body")
+    private String release_description;
+
+    @SerializedName("draft")
+    private boolean draft;
+
+    @SerializedName("prerelease")
+    private boolean prerelease;
+
+    @SerializedName("tag_name")
+    private String release_tag_name;
+
+    @SerializedName("assets_url")
+    private String assets_url;
+
+    @SerializedName("assets")
+    private List<AssestsModel> assestsModels;
+
+    public List<AssestsModel> getAssestsModels() {
+        return assestsModels;
+    }
+
+    public void setAssestsModels(List<AssestsModel> assestsModels) {
+        this.assestsModels = assestsModels;
+    }
+
+    public String getRelease_title() {
+        return release_title;
+    }
+
+    public void setRelease_title(String release_title) {
+        this.release_title = release_title;
+    }
+
+    public String getRelease_description() {
+        return release_description;
+    }
+
+    public void setRelease_description(String release_description) {
+        this.release_description = release_description;
+    }
+
+    public boolean isDraft() {
+        return draft;
+    }
+
+    public void setDraft(boolean draft) {
+        this.draft = draft;
+    }
+
+    public boolean isPrerelease() {
+        return prerelease;
+    }
+
+    public void setPrerelease(boolean prerelease) {
+        this.prerelease = prerelease;
+    }
+
+    public String getRelease_tag_name() {
+        return release_tag_name;
+    }
+
+    public void setRelease_tag_name(String release_tag_name) {
+        this.release_tag_name = release_tag_name;
+    }
+
+    public String getAssets_url() {
+        return assets_url;
+    }
+
+    public void setAssets_url(String assets_url) {
+        this.assets_url = assets_url;
+    }
+}
diff --git a/library/src/main/java/a/gautham/library/models/Update.java b/library/src/main/java/a/gautham/library/models/Update.java
new file mode 100644
index 0000000..845511e
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/models/Update.java
@@ -0,0 +1,101 @@
+package a.gautham.library.models;
+
+public class Update {
+
+    private String downloadUrl, asset_name, release_title, release_description, latest_version;
+    private long download_count, asset_size;
+    private double asset_sizeKb, asses_sizeMb, asset_Gb;
+
+    public Update(String downloadUrl, String asset_name, String release_title, String release_description, String latest_version, long download_count, long asset_size, double asset_sizeKb, double asses_sizeMb, double asset_Gb) {
+        this.downloadUrl = downloadUrl;
+        this.asset_name = asset_name;
+        this.release_title = release_title;
+        this.release_description = release_description;
+        this.latest_version = latest_version;
+        this.download_count = download_count;
+        this.asset_size = asset_size;
+        this.asset_sizeKb = asset_sizeKb;
+        this.asses_sizeMb = asses_sizeMb;
+        this.asset_Gb = asset_Gb;
+    }
+
+    public String getDownloadUrl() {
+        return downloadUrl;
+    }
+
+    public void setDownloadUrl(String downloadUrl) {
+        this.downloadUrl = downloadUrl;
+    }
+
+    public String getAsset_name() {
+        return asset_name;
+    }
+
+    public void setAsset_name(String asset_name) {
+        this.asset_name = asset_name;
+    }
+
+    public String getRelease_title() {
+        return release_title;
+    }
+
+    public void setRelease_title(String release_title) {
+        this.release_title = release_title;
+    }
+
+    public String getRelease_description() {
+        return release_description;
+    }
+
+    public void setRelease_description(String release_description) {
+        this.release_description = release_description;
+    }
+
+    public String getLatest_version() {
+        return latest_version;
+    }
+
+    public void setLatest_version(String latest_version) {
+        this.latest_version = latest_version;
+    }
+
+    public long getDownload_count() {
+        return download_count;
+    }
+
+    public void setDownload_count(long download_count) {
+        this.download_count = download_count;
+    }
+
+    public long getAsset_size() {
+        return asset_size;
+    }
+
+    public void setAsset_size(long asset_size) {
+        this.asset_size = asset_size;
+    }
+
+    public double getAsset_sizeKb() {
+        return asset_sizeKb;
+    }
+
+    public void setAsset_sizeKb(double asset_sizeKb) {
+        this.asset_sizeKb = asset_sizeKb;
+    }
+
+    public double getAsses_sizeMb() {
+        return asses_sizeMb;
+    }
+
+    public void setAsses_sizeMb(double asses_sizeMb) {
+        this.asses_sizeMb = asses_sizeMb;
+    }
+
+    public double getAsset_Gb() {
+        return asset_Gb;
+    }
+
+    public void setAsset_Gb(double asset_Gb) {
+        this.asset_Gb = asset_Gb;
+    }
+}
diff --git a/library/src/main/java/a/gautham/library/service/GithubService.java b/library/src/main/java/a/gautham/library/service/GithubService.java
new file mode 100644
index 0000000..dbd729b
--- /dev/null
+++ b/library/src/main/java/a/gautham/library/service/GithubService.java
@@ -0,0 +1,12 @@
+package a.gautham.library.service;
+
+import a.gautham.library.models.GitRelease;
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Path;
+
+public interface GithubService {
+    @GET("/repos/{username}/{repo}/releases/latest")
+    public Call<GitRelease> getReleases(@Path("username") String username, @Path("repo") String repo);
+
+}
diff --git a/library/src/main/res/drawable/ic_system_update.xml b/library/src/main/res/drawable/ic_system_update.xml
new file mode 100644
index 0000000..c654ff8
--- /dev/null
+++ b/library/src/main/res/drawable/ic_system_update.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="?android:attr/textColorPrimary"
+        android:pathData="M17,1.01L7,1c-1.1,0 -2,0.9 -2,2v18c0,1.1 0.9,2 2,2h10c1.1,0 2,-0.9 2,-2L19,3c0,-1.1 -0.9,-1.99 -2,-1.99zM17,19L7,19L7,5h10v14zM16,13h-3L13,8h-2v5L8,13l4,4 4,-4z"/>
+</vector>
diff --git a/library/src/main/res/layout/download_layout.xml b/library/src/main/res/layout/download_layout.xml
new file mode 100644
index 0000000..07e6139
--- /dev/null
+++ b/library/src/main/res/layout/download_layout.xml
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center"
+    android:layout_margin="4dp">
+
+    <TextView
+        android:id="@+id/download_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/app_updater"
+        android:layout_gravity="start"
+        android:textColor="?android:attr/textColorPrimary"
+        android:layout_margin="4dp"
+        android:padding="6dp"
+        android:textSize="18sp"/>
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        style="@style/Widget.AppCompat.ProgressBar.Horizontal"
+        android:padding="12dp"/>
+
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/download_size"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textColor="?android:attr/textColorPrimary"
+            android:layout_alignParentStart="true"
+            android:layout_margin="4dp"
+            android:padding="6dp"
+            android:textSize="18sp"/>
+
+        <TextView
+            android:id="@+id/percent_pg"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/app_updater_init_percent"
+            android:textColor="?android:attr/textColorPrimary"
+            android:layout_alignParentEnd="true"
+            android:layout_margin="4dp"
+            android:padding="6dp"
+            android:textSize="18sp"/>
+
+
+    </RelativeLayout>
+
+
+</LinearLayout>
\ No newline at end of file
diff --git a/library/src/main/res/values/app_updater.xml b/library/src/main/res/values/app_updater.xml
new file mode 100644
index 0000000..0bb1b47
--- /dev/null
+++ b/library/src/main/res/values/app_updater.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_updater_new_update_available">New Update Available!</string>
+    <string name="app_updater_no_update_available">You are Up-To date. No new updates available</string>
+    <string name="app_updater_update">Update</string>
+    <string name="app_updater_cancel">Cancel</string>
+    <string name="app_updater_git_empty">Git User Name or Repo Name can\'t be Empty</string>
+    <string name="app_updater_no_internet">No Internet Available</string>
+    <string name="app_updater">App Updater</string>
+    <string name="app_updater_init_percent">0%</string>
+    <string name="app_updater_download_error">Error Downloading </string>
+    <string name="app_updater_update_downloaded">Update Downloaded</string>
+    <string name="app_updater_downloading">Downloading</string>
+</resources>
\ No newline at end of file
diff --git a/library/src/main/res/values/colors.xml b/library/src/main/res/values/colors.xml
new file mode 100644
index 0000000..4faecfa
--- /dev/null
+++ b/library/src/main/res/values/colors.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#6200EE</color>
+    <color name="colorPrimaryDark">#3700B3</color>
+    <color name="colorAccent">#03DAC5</color>
+</resources>
\ No newline at end of file
diff --git a/library/src/main/res/values/styles.xml b/library/src/main/res/values/styles.xml
new file mode 100644
index 0000000..ca33314
--- /dev/null
+++ b/library/src/main/res/values/styles.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="dialogAlertStyle" parent="ThemeOverlay.MaterialComponents.MaterialAlertDialog">
+        <item name="colorPrimary">@color/colorAccent</item>
+        <item name="colorSecondary">@color/colorAccent</item>
+    </style>
+</resources>
\ No newline at end of file
diff --git a/library/src/main/res/xml/filepaths.xml b/library/src/main/res/xml/filepaths.xml
new file mode 100644
index 0000000..ffa74ab
--- /dev/null
+++ b/library/src/main/res/xml/filepaths.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <external-path name="external_files" path="."/>
+</paths>
\ No newline at end of file
diff --git a/library/src/test/java/a/gautham/library/ExampleUnitTest.java b/library/src/test/java/a/gautham/library/ExampleUnitTest.java
new file mode 100644
index 0000000..bd2e6c9
--- /dev/null
+++ b/library/src/test/java/a/gautham/library/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package a.gautham.library;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index 4feee4a..6f2259a 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,2 +1,2 @@
 rootProject.name='Status Downloader'
-include ':app'
+include ':app', ':library'