Add: new gradle dependency versioning file and cleanup project buildgradle

build.gradle

@@ -1,25 +1,19 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-  ext.kotlin_version = "1.5.10"
-  repositories {
-    google()
-    mavenCentral()
-  }
-  dependencies {
-    classpath "com.android.tools.build:gradle:4.2.1"
-    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  apply from: 'versions.gradle'
 
-    // NOTE: Do not place your application dependencies here; they belong
-    // in the individual module build.gradle files
+  addRepos(repositories)
+
+  dependencies {
+    classpath deps.project.kotlin
+    classpath deps.project.gradle
   }
+
+  ext.kotlin_version = build_versions.kotlin
 }
 
 allprojects {
-  repositories {
-    google()
-    mavenCentral()
-    jcenter() // Warning: this repository is going to shut down soon
-  }
+  addRepos(repositories)
 }
 
 task clean(type: Delete) {

versions.gradle

@@ -0,0 +1,114 @@
+ext.deps = [:]
+
+def versions = [:]
+versions.kotlin = "1.5.10"
+versions.gradle = "4.2.1"
+versions.room = "2.3.0"
+versions.androidx_appcompat = "1.3.0"
+versions.androidx_core = "1.3.2"
+versions.androidx_constraint_layout = "2.0.4"
+versions.androidx_lifecycle = "2.2.0"
+versions.androidx_recycler_view = "1.2.0"
+versions.androidx_navigation = "2.3.5"
+versions.okhttp_logging_interceptor = "4.9.1"
+versions.retrofit = "2.9.0"
+versions.timber = "4.7.1"
+versions.koin = "2.2.2"
+versions.rx_core = "2.2.21"
+versions.rx_android = "2.1.1"
+versions.junit = "4.13.2"
+versions.test = "1.3.0"
+versions.test_ext = "1.1.2"
+versions.espresso = "3.3.0"
+versions.lottie = "3.7.0"
+versions.picasso = "2.71828"
+
+def build_versions = [:]
+build_versions.min_sdk = 21
+build_versions.target_sdk = 30
+build_versions.build_tools = "30.0.3"
+build_versions.kotlin = "$versions.kotlin"
+ext.build_versions = build_versions
+
+def deps = [:]
+
+def project = [:]
+project.kotlin = "org.jetbrains.kotlin:kotlin-gradle-plugin:$versions.kotlin"
+project.gradle = "com.android.tools.build:gradle:$versions.gradle"
+deps.project = project
+
+def kotlin = [:]
+kotlin.version = "$versions.kotlin"
+kotlin.std_lib = "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$versions.kotlin"
+
+def androidx = [:]
+androidx.appcompat = "androidx.appcompat:appcompat:$versions.androidx_appcompat"
+androidx.core_ktx = "androidx.core:core-ktx:$versions.androidx_core"
+androidx.constraint_layout = "androidx.constraintlayout:constraintlayout:$versions.androidx_constraint_layout"
+androidx.lifecycle_ext = "androidx.lifecycle:lifecycle-extensions:$versions.androidx_lifecycle"
+androidx.lifecycle_viewmodel = "androidx.lifecycle:lifecycle-viewmodel-ktx:$versions.androidx_lifecycle"
+androidx.recycler_view = "androidx.recyclerview:recyclerview:$versions.androidx_recycler_view"
+androidx.navigation_fragment = "androidx.navigation:navigation-fragment-ktx:$versions.androidx_navigation"
+androidx.navigation_ui = "androidx.navigation:navigation-ui-ktx:$versions.androidx_navigation"
+
+def google = [:]
+google.kotlin = kotlin
+google.androidx = androidx
+deps.google = google
+
+def room = [:]
+room.runtime = "androidx.room:room-runtime:$versions.room"
+room.compiler = "androidx.room:room-compiler:$versions.room"
+
+def koin = [:]
+koin.core = "org.koin:koin-android:$versions.koin"
+koin.scope = "org.koin:koin-androidx-scope:$versions.koin"
+koin.viewmodel = "org.koin:koin-androidx-viewmodel:$versions.koin"
+
+def rx = [:]
+rx.core = "io.reactivex.rxjava2:rxjava:$versions.rx_core"
+rx.android = "io.reactivex.rxjava2:rxandroid:$versions.rx_android"
+deps.rx = rx
+
+def okhttp = [:]
+okhttp.logging_interceptor = "com.squareup.okhttp3:logging-interceptor:$versions.okhttp_interceptor"
+
+def retrofit = [:]
+retrofit.runtime = "com.squareup.retrofit2:retrofit:$versions.retrofit"
+retrofit.gson = "com.squareup.retrofit2:converter-gson:$versions.retrofit"
+retrofit.mock = "com.squareup.retrofit2:retrofit-mock:$versions.retrofit"
+retrofit.rx = "com.squareup.retrofit2:adapter-rxjava2:$versions.retrofit"
+
+def thirdparty = [:]
+thirdparty.timber = "com.jakewharton.timber:timber:$versions.timber"
+thirdparty.lottie = "com.airbnb.android:lottie:$versions.lottie"
+thirdparty.picasso = "com.squareup.picasso:picasso:$versions.picasso"
+
+def core = [:]
+core.room = room
+core.koin = koin
+core.rx = rx
+core.okhttp = okhttp
+core.retrofit = retrofit
+core.thirdparty = thirdparty
+deps.core = core
+
+def testing = [:]
+testing.junit = "junit:junit:$versions.junit"
+testing.core = "androidx.test:core:$versions.test"
+testing.rules = "androidx.test:rules:$versions.test"
+testing.runner = "androidx.test:runner:$versions.test"
+testing.ext = "androidx.test.ext:junit:$versions.test_ext"
+testing.koin = "org.koin:koin-test:$versions.koin"
+testing.espresso = "androidx.test.espresso:espresso-core:$versions.espresso"
+deps.testing = testing
+
+ext.deps = deps
+
+static def addRepos(RepositoryHandler handler) {
+  handler.google()
+  handler.jcenter()
+  handler.maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
+}
+
+ext.addRepos = this.&addRepos