implement SocialConnect first iteration

cookpad · Aug 14, 2020 · ea7276a · ea7276a
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diff --git a/.gitignore b/.gitignore
@@ -11,3 +11,5 @@
 /captures
 .externalNativeBuild
 .cxx
+.build
+app/src/main/java/cookpad/com/sample/Credentials.kt
diff --git a/README.md b/README.md
@@ -0,0 +1,128 @@
+# SocialConnect
+SocialConnect simplifies the process of retrieving OAuth tokens from multiple social networks on Android by leveraging the [Navigation component](https://developer.android.com/guide/navigation/navigation-getting-started). This library has as many providers as [ScribeJava](https://github.com/scribejava/scribejava) has, as SocialConnect is built on top of it.
+
+## Setup
+Add the JitPack repository in your build.gradle (top level module):
+```gradle
+allprojects {
+    repositories {
+        maven { url "https://jitpack.io" }
+    }
+}
+```
+
+Apply the SafeArgs plugin ([see how](https://developer.android.com/guide/navigation/navigation-pass-data)) and add next dependency in the build.gradle of your app module:
+```gradle
+dependencies {
+    compile 'com.github.cookpad:SocialConnect:0.0.2'
+}
+```
+
+## Usage
+`ConnectFragment` is the entry point of SocialConnect library. To use it, add the `connect_graph` as a destination to your nav graph file, as follow:
+
+```xml
+<fragment
+    android:id="@+id/yourFrgment"
+    android:name=".YourFragment"
+    tools:layout="@layout/your_fragment">
+    <action
+        android:id="@+id/action_yourFragment_to_connectFragment"
+        app:destination="@id/connect_graph">
+        <argument
+            android:name="serviceConfig"
+            app:argType="cookpad.com.socialconnect.OAuthServiceConfig" />
+        <argument
+            android:name="keyRequestCode"
+            app:argType="string" />
+    </action>
+</fragment>
+```
+
+This will generate `YourFragmentDirections.actionConnectionsFragmentToConnectFragment` which expects an `OAuthServiceConfig` instance and provides the `NavDirection` to access `ConnectFragment` from your nav graph.
+
+OAuth1 with Twitter provider:
+
+```kotlin
+findNavController().navigate(
+    ConnectionsFragmentDirections.actionConnectionsFragmentToConnectFragment(
+        keyRequestCode = RESULT_CONNECTION_TWITTER,
+        serviceConfig = OAuth10ServiceConfig(
+            apiKey = API_KEY_TWITTER,
+            apiSecret = API_SECRET,
+            callback = CALLBACK_URL,
+            clazz = TwitterApi::class.java
+        )
+    )
+)
+```
+
+OAuth2 with Github provider:
+
+```kotlin
+findNavController().navigate(
+    ConnectionsFragmentDirections.actionConnectionsFragmentToConnectFragment(
+        keyRequestCode = RESULT_CONNECTION_GITHUB,
+        serviceConfig = OAuth20ServiceConfig(
+            apiKey = API_KEY_GITHUB,
+            apiSecret = API_SECRET_GITHUB,
+            callback = CALLBACK_URL,
+            clazz = GitHubApi::class.java
+        )
+    )
+)
+```
+
+To retrieve the `Token` back, listen for changes on `findNavController().currentBackStackEntry?.savedStateHandle` expecting a type of `ConnectResult`: ([see](https://developer.android.com/guide/navigation/navigation-programmatic) for more info about how retrieve a result to the previous Destination with the navigation Component)
+
+```kotlin
+findNavController().currentBackStackEntry?.savedStateHandle
+            ?.getLiveData<ConnectResult>(RESULT_CONNECTION_TWITTER)
+            ?.observe(viewLifecycleOwner, Observer { connectResult ->
+                processConnectResult(nameProvider = "Twitter", connectResult = connectResult)
+            })
+
+findNavController().currentBackStackEntry?.savedStateHandle
+    ?.getLiveData<ConnectResult>(RESULT_CONNECTION_GITHUB)
+    ?.observe(viewLifecycleOwner, Observer { connectResult ->
+        processConnectResult(nameProvider = "Github", connectResult = connectResult)
+    })
+
+
+private fun processConnectResult(nameProvider: String, connectResult: ConnectResult) {
+    when (connectResult) {
+        is ConnectResultOk -> {
+            val token = connectResult.token
+            val message = when (token) {
+                is OAuth1AccessToken -> "Provider: $nameProvider, Token: ${token.token} Secret:${token.tokenSecret}"
+                is OAuth2AccessToken -> "Provider: $nameProvider, AccessToken: ${token.accessToken}"
+                else -> throw IllegalStateException(token::class.java.canonicalName)
+            }
+            Toast.makeText(requireContext(), message, Toast.LENGTH_LONG).show()
+        }
+        is ConnectResultError -> {
+            Toast.makeText(requireContext(), connectResult.error.message, Toast.LENGTH_LONG).show()
+        }
+    }
+}
+```  
+
+## Sample app
+Check the `:app` Gradle module for a showcase of Twitter and Github providers. But prior to build the module, you need to provide the `app/src/main/java/cookpad/com/sample/Credentials.kt` file with the credentials of both your [Twitter](https://developer.twitter.com/en/apps) and your [Github](https://docs.github.com/en/developers/apps/creating-a-github-app) app:
+
+```kotlin
+const val API_KEY_TWITTER = ""
+const val API_SECRET = ""
+
+const val API_KEY_GITHUB = ""
+const val API_SECRET_GITHUB = ""
+
+const val CALLBACK_URL = ""
+``` 
+
+## Proguard
+Proguard is already handled via the `consumer-rules.pro` config file.
+
+
+## Credits
+Oauth core authentication: [ScribeJava](https://github.com/scribejava/scribejava)
diff --git a/app/build.gradle b/app/build.gradle
@@ -1,13 +1,14 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
+apply plugin: "androidx.navigation.safeargs.kotlin"
 
 android {
     compileSdkVersion 29
     buildToolsVersion "30.0.0"
 
     defaultConfig {
-        applicationId "cookpad.com.socialconnect"
+        applicationId "cookpad.com.sample"
         minSdkVersion 21
         targetSdkVersion 29
         versionCode 1
@@ -25,12 +26,13 @@ android {
 }
 
 dependencies {
-    implementation fileTree(dir: "libs", include: ["*.jar"])
+    implementation project(path: ':social-connect')
+
+    implementation 'androidx.navigation:navigation-fragment:2.3.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.0'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.0'
+
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation 'androidx.core:core-ktx:1.3.1'
-    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'
-
+    implementation 'androidx.appcompat:appcompat:1.2.0'
 }
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
@@ -19,3 +19,5 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+-keep class * extends androidx.fragment.app.Fragment{}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
@@ -1,12 +1,19 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="cookpad.com.socialconnect">
+    package="cookpad.com.sample">
 
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme" />
+        android:theme="@style/AppTheme">
+        <activity android:name=".StartActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
 
 </manifest>
diff --git a/app/src/main/java/cookpad/com/sample/ConnectionsFragment.kt b/app/src/main/java/cookpad/com/sample/ConnectionsFragment.kt
@@ -0,0 +1,88 @@
+package cookpad.com.sample
+
+import android.os.Bundle
+import android.view.View
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.navigation.fragment.findNavController
+import com.github.scribejava.apis.GitHubApi
+import com.github.scribejava.apis.TwitterApi
+import com.github.scribejava.core.model.OAuth1AccessToken
+import com.github.scribejava.core.model.OAuth2AccessToken
+import cookpad.com.socialconnect.ConnectResult
+import cookpad.com.socialconnect.ConnectResultError
+import cookpad.com.socialconnect.ConnectResultOk
+import cookpad.com.socialconnect.OAuth10ServiceConfig
+import cookpad.com.socialconnect.OAuth20ServiceConfig
+import kotlinx.android.synthetic.main.connections_fragment.bt_github
+import kotlinx.android.synthetic.main.connections_fragment.bt_twitter
+
+class ConnectionsFragment : Fragment(R.layout.connections_fragment) {
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        bt_twitter.setOnClickListener {
+            findNavController().navigate(
+                ConnectionsFragmentDirections.actionConnectionsFragmentToConnectFragment(
+                    keyRequestCode = RESULT_CONNECTION_TWITTER,
+                    serviceConfig = OAuth10ServiceConfig(
+                        apiKey = API_KEY_TWITTER,
+                        apiSecret = API_SECRET,
+                        callback = CALLBACK_URL,
+                        clazz = TwitterApi::class.java
+                    )
+                )
+            )
+        }
+
+        bt_github.setOnClickListener {
+            findNavController().navigate(
+                ConnectionsFragmentDirections.actionConnectionsFragmentToConnectFragment(
+                    keyRequestCode = RESULT_CONNECTION_GITHUB,
+                    serviceConfig = OAuth20ServiceConfig(
+                        apiKey = API_KEY_GITHUB,
+                        apiSecret = API_SECRET_GITHUB,
+                        callback = CALLBACK_URL,
+                        clazz = GitHubApi::class.java
+                    )
+                )
+            )
+        }
+
+        findNavController().currentBackStackEntry?.savedStateHandle
+            ?.getLiveData<ConnectResult>(RESULT_CONNECTION_TWITTER)
+            ?.observe(viewLifecycleOwner, Observer { connectResult ->
+                processConnectResult(nameProvider = "Twitter", connectResult = connectResult)
+            })
+
+        findNavController().currentBackStackEntry?.savedStateHandle
+            ?.getLiveData<ConnectResult>(RESULT_CONNECTION_GITHUB)
+            ?.observe(viewLifecycleOwner, Observer { connectResult ->
+                processConnectResult(nameProvider = "Github", connectResult = connectResult)
+            })
+    }
+
+    private fun processConnectResult(nameProvider: String, connectResult: ConnectResult) {
+        when (connectResult) {
+            is ConnectResultOk -> {
+                val token = connectResult.token
+                val message = when (token) {
+                    is OAuth1AccessToken -> "Provider: $nameProvider, Token: ${token.token} Secret:${token.tokenSecret}"
+                    is OAuth2AccessToken -> "Provider: $nameProvider, AccessToken: ${token.accessToken}"
+                    else -> throw IllegalStateException(token::class.java.canonicalName)
+                }
+                Toast.makeText(requireContext(), message, Toast.LENGTH_LONG).show()
+            }
+            is ConnectResultError -> {
+                Toast.makeText(requireContext(), connectResult.error.message, Toast.LENGTH_LONG).show()
+            }
+        }
+    }
+
+    companion object {
+        const val RESULT_CONNECTION_TWITTER = "result_connection_twitter"
+        const val RESULT_CONNECTION_GITHUB = "result_connection_github"
+    }
+}
diff --git a/app/src/main/java/cookpad/com/sample/StartActivity.kt b/app/src/main/java/cookpad/com/sample/StartActivity.kt
@@ -0,0 +1,5 @@
+package cookpad.com.sample
+
+import androidx.appcompat.app.AppCompatActivity
+
+class StartActivity : AppCompatActivity(R.layout.start_activity)
diff --git a/app/src/main/res/layout/connections_fragment.xml b/app/src/main/res/layout/connections_fragment.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_margin="5dp"
+    android:fitsSystemWindows="true"
+    android:orientation="vertical">
+
+    <Button
+        android:id="@+id/bt_twitter"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:backgroundTint="@color/colorPrimary"
+        android:text="@string/twitter_connect"
+        android:textColor="@color/colorWhite" />
+
+    <Button
+        android:id="@+id/bt_github"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="5dp"
+        android:backgroundTint="@color/colorPrimary"
+        android:text="@string/github_connect"
+        android:textColor="@color/colorWhite" />
+
+</LinearLayout>
diff --git a/app/src/main/res/layout/start_activity.xml b/app/src/main/res/layout/start_activity.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".StartActivity">
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/nav_host_fragment"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true"
+        app:navGraph="@navigation/nav_graph" />
+</FrameLayout>
diff --git a/app/src/main/res/navigation/nav_graph.xml b/app/src/main/res/navigation/nav_graph.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/nav_graph"
+    app:startDestination="@id/connectionsFragment">
+
+    <include app:graph="@navigation/connect_graph" />
+
+    <fragment
+        android:id="@+id/connectionsFragment"
+        android:name="cookpad.com.sample.ConnectionsFragment"
+        tools:layout="@layout/connections_fragment">
+        <action
+            android:id="@+id/action_connectionsFragment_to_connectFragment"
+            app:destination="@id/connect_graph">
+            <argument
+                android:name="serviceConfig"
+                app:argType="cookpad.com.socialconnect.OAuthServiceConfig" />
+            <argument
+                android:name="keyRequestCode"
+                app:argType="string" />
+        </action>
+    </fragment>
+
+</navigation>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="colorPrimary">#6200EE</color>
-    <color name="colorPrimaryDark">#3700B3</color>
-    <color name="colorAccent">#03DAC5</color>
+    <color name="colorPrimary">#FF9933</color>
+    <color name="colorPrimaryDark">#CC7A29</color>
+    <color name="colorAccent">#8BAD00</color>
+    <color name="colorWhite">#ffffff</color>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
@@ -1,3 +1,5 @@
 <resources>
     <string name="app_name">SocialConnect</string>
+    <string name="twitter_connect">Connect with Twitter</string>
+    <string name="github_connect">Connect with Github</string>
 </resources>