Optimize gradle build scripts

api/build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'java'
-    id 'org.jetbrains.kotlin.jvm' version '1.3.50'
+    id 'org.jetbrains.kotlin.jvm'
     id 'jacoco'
     id 'com.jfrog.bintray' version '1.8.4'
     id 'com.github.dcendents.android-maven' version '2.1'
@@ -15,49 +15,26 @@ ext {
 group 'io.github.wulkanowy'
 version PUBLISH_VERSION
 
-sourceCompatibility = 1.6
-
-repositories {
-    mavenCentral()
-    maven { url 'https://jitpack.io' }
-    jcenter()
-}
-
 configurations {
     ktlint
 }
 
-ext {
-    jspoon = "1.3.2"
-    okhttp3 = "3.12.6"
-    retrofit = "2.6.2"
-    threetenbp = "1.4.0"
-    slf4j = "1.7.29"
-}
-
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-
     implementation "pl.droidsonroids:jspoon:$jspoon"
     implementation "pl.droidsonroids.retrofit2:converter-jspoon:$jspoon"
-    implementation "com.squareup.retrofit2:converter-gson:$retrofit"
+
+    implementation "com.squareup.okhttp3:okhttp-urlconnection:$okhttp3"
 
     implementation "com.squareup.retrofit2:retrofit:$retrofit"
     implementation "com.squareup.retrofit2:adapter-rxjava2:$retrofit"
     implementation "com.squareup.retrofit2:converter-scalars:$retrofit"
-    implementation "com.squareup.okhttp3:logging-interceptor:$okhttp3"
+    implementation "com.squareup.retrofit2:converter-gson:$retrofit"
-    implementation "com.squareup.okhttp3:okhttp-urlconnection:$okhttp3"
 
     implementation "com.github.jonyas:RxJava2Reauth:master"
 
     implementation "org.slf4j:slf4j-api:$slf4j"
     testImplementation "org.slf4j:slf4j-simple:$slf4j"
 
-    compileOnly "org.threeten:threetenbp:$threetenbp:no-tzdb"
-    testImplementation "org.threeten:threetenbp:$threetenbp"
-
-    testImplementation "com.squareup.okhttp3:mockwebserver:$okhttp3"
-    testImplementation "junit:junit:4.12"
     ktlint "com.pinterest:ktlint:0.35.0"
 }
 
@@ -79,13 +56,6 @@ task ktlintFormat(type: JavaExec, group: "formatting") {
     args "-F", "src/**/*.kt"
 }
 
-compileKotlin {
-    kotlinOptions.jvmTarget = "1.6"
-}
-compileTestKotlin {
-    kotlinOptions.jvmTarget = "1.6"
-}
-
 jacocoTestReport {
     reports {
         xml.enabled true

build.gradle

@@ -1,18 +1,49 @@
-allprojects {
+plugins {
-    repositories {
+    id 'org.jetbrains.kotlin.jvm' version '1.3.50' apply false
-        mavenCentral()
-        jcenter()
-        maven { url "https://jitpack.io" }
-    }
-}
-
-ext {
-    okhttp3 = "3.12.5"
-    retrofit = "2.6.2"
-    threetenbp = "1.4.0"
 }
 
 subprojects {
     version = "0.12.0-SNAPSHOT"
     group = "io.github.wulkanowy"
 }
+
+ext {
+    jspoon = "1.3.2"
+    okhttp3 = "3.12.6"
+    retrofit = "2.6.2"
+    threetenbp = "1.4.0"
+    slf4j = "1.7.29"
+}
+
+allprojects {
+    apply plugin: 'java'
+    apply plugin: 'kotlin'
+
+    sourceCompatibility = 1.8
+
+    compileKotlin {
+        kotlinOptions {
+            jvmTarget = "1.6"
+            javaParameters = true
+        }
+    }
+
+    repositories {
+        mavenCentral()
+        jcenter()
+        maven { url "https://jitpack.io" }
+    }
+
+    dependencies {
+        implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+
+        implementation "io.reactivex.rxjava2:rxjava:2.2.14"
+        implementation "com.squareup.okhttp3:logging-interceptor:$okhttp3"
+
+        compileOnly "org.threeten:threetenbp:$threetenbp:no-tzdb"
+        testImplementation "org.threeten:threetenbp:$threetenbp"
+
+        testImplementation "com.squareup.okhttp3:mockwebserver:$okhttp3"
+        testImplementation "junit:junit:4.12"
+    }
+}

mobile/build.gradle

@@ -1,20 +1,12 @@
 plugins {
     id 'java'
-    id 'org.jetbrains.kotlin.jvm' version '1.3.50'
+    id 'org.jetbrains.kotlin.jvm'
     id 'jacoco'
 }
 
-sourceCompatibility = 1.8
-
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-
-    implementation "io.github.wulkanowy:api:02e3190"
     implementation "io.github.wulkanowy:uonet-request-signer:6d7aebf0e9"
 
-    compileOnly "org.threeten:threetenbp:$threetenbp:no-tzdb"
-    testImplementation "org.threeten:threetenbp:$threetenbp"
-
     implementation 'com.google.code.gson:gson:2.8.6'
     implementation "com.squareup.retrofit2:retrofit:$retrofit"
     implementation "com.squareup.retrofit2:converter-gson:$retrofit"
@@ -22,17 +14,6 @@ dependencies {
 
     implementation "com.squareup.retrofit2:retrofit:$retrofit"
     implementation "com.squareup.retrofit2:adapter-rxjava2:$retrofit"
-    implementation "com.squareup.okhttp3:logging-interceptor:$okhttp3"
-
-    testImplementation "com.squareup.okhttp3:mockwebserver:$okhttp3"
-    testImplementation "junit:junit:4.12"
-}
-
-compileKotlin {
-    kotlinOptions.jvmTarget = "1.8"
-}
-compileTestKotlin {
-    kotlinOptions.jvmTarget = "1.8"
 }
 
 jacocoTestReport {

sdk/build.gradle

@@ -1,32 +1,12 @@
 plugins {
     id 'java'
-    id 'org.jetbrains.kotlin.jvm' version '1.3.50'
+    id 'org.jetbrains.kotlin.jvm'
     id 'jacoco'
 }
 
-sourceCompatibility = 1.8
-
 dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    implementation project(":api")
-
     implementation project(":mobile")
-    implementation "io.github.wulkanowy:api:02e3190"
-
-    compileOnly "org.threeten:threetenbp:$threetenbp:no-tzdb"
-    testImplementation "org.threeten:threetenbp:$threetenbp"
-
-    implementation "io.reactivex.rxjava2:rxjava:2.2.14"
-    implementation "com.squareup.okhttp3:logging-interceptor:$okhttp3"
-
-    testImplementation "com.squareup.okhttp3:mockwebserver:$okhttp3"
-    testImplementation "junit:junit:4.12"
-}
-
-compileKotlin {
-    kotlinOptions.jvmTarget = "1.8"
-}
-compileTestKotlin {
-    kotlinOptions.jvmTarget = "1.8"
 }
 
 jacocoTestReport {