Hello Celo

Hello_Celo/Readme.md

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+
+# ⚡ Hello Celo ⚡
+
+#### Infrastructure and Web3 Track
+
+##### US-Americas
+
+##### Team Members
+
+- Paul Brower (brower.paul@gmail.com), Sole
+
+#### Project Description
+
+An uncensorable micro-blogging platform built on Android and Celo
+
+#### Summary
+
+The project was able to accomplish:
+* An android app
+* creating accounts
+* updating accounts
+* meta-transactions on a deployed smart contract
+
+Wanted to get to but did not
+
+* integration with Valora
+* offline posting
+* contact import
+
+#### URLs
+
+Video: https://www.youtube.com/watch?v=morZB-JeXSc
+Play Store Listing: https://play.google.com/store/apps/details?id=com.github.browep.hellocelo
+Testnet Contract: https://alfajores-blockscout.celo-testnet.org/address/0x5abA1E96a9CaCDde213B8F66c25654DfC1C66ABC/transactions
+
+
+#### Presentation
+
+https://www.youtube.com/watch?v=morZB-JeXSc
+
+#### Next Steps
+
+* iOS App
+* relayer nodes for meta transactions
+* friend discovering via contact import
+
+#### License
+
+MIT

Hello_Celo/codebase/README.md

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+# hello-celo
+
+
+## Building Smart Contract
+
+`cd smart-contracts`
+
+`docker run -v $(pwd):/sources ethereum/solc:stable -o /sources/output --abi --bin /sources/hello-celo.sol`
+
+using web3j v1.4.1
+
+`~/Development/web3j-1.4.1/bin/web3j generate solidity --abiFile=./output/HelloWorld.abi --binFile=./output/HelloWorld.bin --outputDir=../android/domain/src/main/java/ --package=com.github.browep.hellocelo`

Hello_Celo/codebase/android/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
+/.idea/

Hello_Celo/codebase/android/app/.gitignore

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+/build

Hello_Celo/codebase/android/app/build.gradle

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+plugins {
+    id 'com.android.application'
+    id 'kotlin-android'
+}
+
+android {
+    compileSdk 31
+
+    defaultConfig {
+        applicationId "com.github.browep.hellocelo"
+        minSdk 23
+        targetSdk 31
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    signingConfigs {
+        release {
+            storeFile file("release.keystore")
+            storePassword 'password'
+            keyAlias 'key0'
+            keyPassword 'password'
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            signingConfig signingConfigs.release
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+}
+
+configurations.all {
+    resolutionStrategy.dependencySubstitution {
+        substitute module('org.hamcrest:hamcrest-core:1.1') with module('junit:junit:4.10')
+    }
+}
+
+dependencies {
+    implementation project(':domain')
+
+    implementation "io.ktor:ktor-client-android:$ktor_version"
+
+    implementation 'com.github.bumptech.glide:glide:4.12.0'
+    annotationProcessor 'com.github.bumptech.glide:compiler:4.12.0'
+    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$kotlin_coroutines_version"
+    implementation group: 'org.jetbrains.kotlin', name: 'kotlin-stdlib', version: kotlin_version
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$kotlin_coroutines_version"
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.core:core-ktx:1.6.0'
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
+    implementation "androidx.security:security-crypto:1.0.0"
+}

Hello_Celo/codebase/android/app/proguard-rules.pro

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+# 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

Hello_Celo/codebase/android/app/release/output-metadata.json

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+{
+  "version": 3,
+  "artifactType": {
+    "type": "APK",
+    "kind": "Directory"
+  },
+  "applicationId": "com.github.browep.hellocelo",
+  "variantName": "release",
+  "elements": [
+    {
+      "type": "SINGLE",
+      "filters": [],
+      "attributes": [],
+      "versionCode": 1,
+      "versionName": "1.0",
+      "outputFile": "app-release.apk"
+    }
+  ],
+  "elementType": "File"
+}

Hello_Celo/codebase/android/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"
+    package="com.github.browep.hellocelo">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
+        android:maxSdkVersion="18" />
+
+    <queries>
+        <intent>
+            <action android:name="android.media.action.IMAGE_CAPTURE" />
+        </intent>
+    </queries>
+
+    <application
+        android:name=".HelloCeloApplication"
+        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/Theme.HelloCelo">
+        <activity
+            android:name=".activity.SplashActivity"
+            android:exported="true"
+            android:theme="@style/Theme.HelloCelo.NoActionBar.MatchStatus">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+        <activity
+            android:name=".activity.MainActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar" />
+
+        <activity
+            android:name=".activity.GenerateSeedPhraseActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar" />
+
+        <activity
+            android:name=".activity.SetupProfileActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar"
+            android:windowSoftInputMode="adjustResize"
+            />
+        <activity
+            android:name=".activity.CreatePostActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar"
+            android:windowSoftInputMode="adjustResize"
+            />
+        <activity
+            android:name=".activity.UserPostsDetailActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar"
+            android:windowSoftInputMode="adjustResize"
+            />
+        <activity
+            android:name=".activity.FriendsActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar"
+            android:windowSoftInputMode="adjustResize"
+            />
+        <activity
+            android:name=".activity.AddFriendActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar"
+            android:windowSoftInputMode="adjustResize"
+            />
+        <activity
+            android:name=".activity.EditProfileActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar"
+            android:windowSoftInputMode="adjustResize"
+            />
+
+        <activity
+            android:name=".activity.SuccessActivity"
+            android:exported="false"
+            android:theme="@style/Theme.HelloCelo.NoActionBar.MatchStatus" />
+
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths"></meta-data>
+        </provider>
+
+    </application>
+
+</manifest>

Hello_Celo/codebase/android/app/src/main/java/com/github/browep/hellocelo/HelloCeloApplication.kt

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+package com.github.browep.hellocelo
+
+import android.app.Application
+
+class HelloCeloApplication : Application() {
+
+    override fun onCreate() {
+        super.onCreate()
+        logger.debug("onCreate")
+        Provider(this)
+    }
+
+    companion object : LoggerCompanion(HelloCeloApplication::class) {
+
+    }
+
+}

Hello_Celo/codebase/android/app/src/main/java/com/github/browep/hellocelo/Provider.kt

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+package com.github.browep.hellocelo
+
+import android.app.Activity
+import android.content.Context
+import com.github.browep.hellocelo.data.AndroidDatastore
+import com.github.browep.hellocelo.data.AndroidDbConnManager
+import com.github.browep.hellocelo.blockchain.BlockchainService
+import com.github.browep.hellocelo.blockchain.TestNetBlockchainService
+import com.github.browep.hellocelo.dao.CredProvider
+import com.github.browep.hellocelo.dao.Database
+import com.github.browep.hellocelo.dao.Datastore
+import io.ktor.client.*
+import io.ktor.client.engine.android.*
+
+class Provider(context: Context) {
+
+    val datastore: Datastore
+    val database: Database
+    val blockchainService: BlockchainService
+    val credProvider: CredProvider
+    val cloudService: CloudService
+
+    init {
+        val androidHttpClient = HttpClient(Android)
+        datastore = AndroidDatastore(context)
+        val dbConnManager = AndroidDbConnManager(context)
+        dbConnManager.writableDatabase // this should init the db
+        database = Database(dbConnManager)
+        cloudService = CloudService(database, androidHttpClient, "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.B9SgqP9LUDpS4E3_AIUOKhmeglPA3XPxdwZ9Z1ZhuN4")
+        blockchainService = TestNetBlockchainService()
+        credProvider = CredProvider(datastore)
+        instance = this
+    }
+
+    companion object : LoggerCompanion(Provider::class) {
+        var instance: Provider? = null
+    }
+
+}
+
+val Activity.datastore
+    get() = Provider.instance!!.datastore
+val Activity.database
+    get() = Provider.instance!!.database
+val Activity.blockchainService
+    get() = Provider.instance!!.blockchainService
+val Activity.credProvider
+    get() = Provider.instance!!.credProvider
+val Activity.cloudService
+    get() = Provider.instance!!.cloudService

Hello_Celo/codebase/android/app/src/main/java/com/github/browep/hellocelo/Router.kt

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+package com.github.browep.hellocelo
+
+import android.content.Intent
+import com.github.browep.hellocelo.activity.AddFriendActivity
+import com.github.browep.hellocelo.activity.BaseActivity
+import com.github.browep.hellocelo.activity.CreatePostActivity
+import com.github.browep.hellocelo.activity.EditProfileActivity
+import com.github.browep.hellocelo.activity.SetupProfileActivity
+import com.github.browep.hellocelo.activity.UserPostsDetailActivity
+import org.jetbrains.anko.intentFor
+
+class Router(private val baseActivity: BaseActivity) {
+
+    fun routeAuthorPost() = baseActivity.horizStartActivity(Intent(baseActivity, CreatePostActivity::class.java))
+
+    fun routeSetupProfile() = baseActivity.horizStartActivity(Intent(baseActivity, SetupProfileActivity::class.java))
+
+    fun routeEditProfile() = baseActivity.horizStartActivity(Intent(baseActivity, EditProfileActivity::class.java))
+
+    fun routeFriendsPosts(userName: String) = baseActivity.horizStartActivity(UserPostsDetailActivity.intent(baseActivity, userName))
+
+    fun routerAddFriend() = baseActivity.horizStartActivity(baseActivity.intentFor<AddFriendActivity>())
+}