Kotlin Facet: Fix platform detection in android-gradle projects

Sort candidate library names by descending length.
Suppress common library if platform-specific one is also present

 #KT-16827 Fixed

idea/idea-android/src/org/jetbrains/kotlin/android/configure/PlatformAndroidGradleDetector.kt

@@ -44,7 +44,10 @@ class PlatformAndroidGradleDetector : KotlinPlatformGradleDetector {
                 .flatMap { it.data.jarLibraryDependencies.asSequence() }
                 .forEach {
                     val libraryName = it.name
-                    if (libraryName.substringBeforeLast("-") in libraryIds) return libraryName.substringAfterLast("-")
+                    for (libraryId in libraryIds) {
+                        val prefix = "$libraryId-"
+                        if (libraryName.startsWith(prefix)) return libraryName.substringAfter(prefix)
+                    }
                 }
         return null
     }

idea/src/org/jetbrains/kotlin/idea/configuration/KotlinGradleSourceSetDataService.kt

@@ -99,7 +99,8 @@ private fun detectPlatformByPlugin(moduleNode: DataNode<ModuleData>): TargetPlat
 }
 
 private fun detectPlatformByLibrary(moduleNode: DataNode<ModuleData>): TargetPlatformKind<*>? {
-    return TargetPlatformKind.ALL_PLATFORMS.firstOrNull { moduleNode.getResolvedKotlinStdlibVersionByModuleData(it.mavenLibraryIds) != null }
+    val detectedPlatforms = mavenLibraryIdToPlatform.entries.filter { moduleNode.getResolvedKotlinStdlibVersionByModuleData(listOf(it.key)) != null }.map { it.value }.distinct()
+    return detectedPlatforms.singleOrNull() ?: detectedPlatforms.firstOrNull { it != TargetPlatformKind.Common }
 }
 
 private fun configureFacetByGradleModule(

idea/src/org/jetbrains/kotlin/idea/facet/facetUtils.kt

@@ -101,6 +101,13 @@ val TargetPlatformKind<*>.mavenLibraryIds: List<String>
         is TargetPlatformKind.Common -> listOf(MAVEN_COMMON_STDLIB_ID)
     }
 
+val mavenLibraryIdToPlatform: Map<String, TargetPlatformKind<*>> by lazy {
+    TargetPlatformKind.ALL_PLATFORMS
+            .flatMap { platform -> platform.mavenLibraryIds.map { it to platform } }
+            .sortedByDescending { it.first.length }
+            .toMap()
+}
+
 fun Module.getOrCreateFacet(modelsProvider: IdeModifiableModelsProvider, useProjectSettings: Boolean): KotlinFacet {
     val facetModel = modelsProvider.getModifiableFacetModel(this)
 

idea/tests/org/jetbrains/kotlin/idea/codeInsight/gradle/GradleFacetImportTest_3_3.kt

@@ -91,12 +91,12 @@ class GradleFacetImportTest_3_3 : GradleImportingTestCase() {
                 repositories {
                     mavenCentral()
                     maven {
-                        url 'http://dl.bintray.com/kotlin/kotlin-eap-1.1'
+                        url 'http://dl.bintray.com/kotlin/kotlin-dev'
                     }
                 }
 
                 dependencies {
-                    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.0")
+                    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.2-eap-44")
                 }
             }