Add maven publishing and upload to Bintray (#2)

bintray.build.gradle

@@ -0,0 +1,66 @@
+apply plugin: "com.jfrog.bintray"
+
+afterEvaluate {
+    // needs afterEvaluate to load project description from module's build.gradle
+    loadLocalBintrayProperties()
+
+    bintray {
+        // https://github.com/bintray/gradle-bintray-plugin
+        user = readProperty('BINTRAY_USER')
+        key = readProperty('BINTRAY_KEY')
+        publications = ["MVFlowPublication"]
+        pkg {
+            repo = 'MVFlow'
+            name = project.name
+            assert project.description: "Missing description for project :${project.name} to be used for uploading to Bintray"
+            desc = project.description
+            licenses = ['MIT']
+            websiteUrl = 'https://github.com/pedroql/mvflow'
+            issueTrackerUrl = 'https://github.com/pedroql/mvflow/issues'
+            vcsUrl = 'https://github.com/pedroql/mvflow.git'
+            // the next line requires extra authentication
+            // githubRepo = 'pedroql/mvflow'
+            version {
+                name = project.version
+                released = new Date()
+                vcsTag = readVcsTag()
+            }
+//            publish = true  //[Default: false]
+            dryRun = true   //[Default: false]
+//            override = true //[Default: false] Whether to override version artifacts already published
+        }
+    }
+
+}
+
+static private def readProperty(propertyName) {
+    def value = System.getProperty(propertyName) ?: System.getenv(propertyName)
+    if (value == null) {
+        throw new NullPointerException("Missing property $propertyName")
+    }
+    return value
+}
+
+private static def readVcsTag() {
+    return System.getProperty("VCS_TAG")
+}
+
+private def loadLocalBintrayProperties() {
+    Properties properties = new Properties()
+    def propertiesFile = project.rootProject.file('local.properties')
+    if (propertiesFile.exists()) {
+        properties.load(propertiesFile.newDataInputStream())
+
+        println("Loading Bintray properties into system")
+        loadPropertyIntoSystem("BINTRAY_USER", properties)
+        loadPropertyIntoSystem("BINTRAY_KEY", properties)
+    }
+}
+
+private static void loadPropertyIntoSystem(String propertyName, Map properties) {
+    def missingInSystem = !System.properties.containsKey(propertyName)
+    def presentInLocalProperties = propertyName in properties
+    if (missingInSystem && presentInLocalProperties) {
+        System.setProperty(propertyName, properties[propertyName].toString())
+    }
+}

build.gradle

@@ -1,5 +1,6 @@
 plugins {
-    id 'org.jetbrains.kotlin.jvm' version '1.3.72' apply false
+    id "org.jetbrains.kotlin.jvm" version "1.3.72" apply false
+    id "com.jfrog.bintray" version "1.8.5" apply false
 }
 
 allprojects {
@@ -8,7 +9,9 @@ allprojects {
 }
 
 subprojects  {
-    apply plugin: 'org.jetbrains.kotlin.jvm'
+    apply plugin: "org.jetbrains.kotlin.jvm"
+    apply from: "$rootDir/publishing.build.gradle"
+    apply from: "$rootDir/bintray.build.gradle"
 
     repositories {
         mavenCentral()

mvflow-core/build.gradle

@@ -15,3 +15,6 @@ tasks.test {
         events("passed", "skipped", "failed")
     }
 }
+
+// project description is sent to Bintray during bintrayUpload task
+project.description = "Core functionality of MVFlow"

publishing.build.gradle

@@ -0,0 +1,39 @@
+apply plugin: "maven-publish"
+
+task sourceJar(type: Jar) {
+    from sourceSets.main.allSource
+    classifier "sources"
+}
+
+publishing {
+    // https://docs.gradle.org/5.0/dsl/org.gradle.api.publish.maven.MavenPublication.html
+    publications {
+        MVFlowPublication(MavenPublication) {
+            from components.java
+            artifact sourceJar
+            pom {
+                description = "Simple MVI architecture using Kotlin Flows"
+                url = "https://github.com/pedroql/mfflow"
+                licenses {
+                    license {
+                        name = 'The MIT License'
+                        url = 'https://opensource.org/licenses/MIT'
+                        distribution = 'repo'
+                    }
+                }
+                scm {
+                    connection = "scm:git:https://github.com/pedroql/mvflow.git"
+                    developerConnection = "scm:git:git@github.com/pedroql/mvflow.git"
+                    url = "https://github.com/pedroql/mfflow"
+                }
+            }
+        }
+
+    }
+    repositories {
+        maven {
+            url = uri("$buildDir/local-maven-repository")
+            name = "local"
+        }
+    }
+}