Update kotlin and android dependencies.

dependencies.gradle

@@ -1,14 +1,14 @@
 ext.versions = [
         minSdk               : 14,
         targetSdk            : 22,
-        compileSdk           : 22,
+        compileSdk           : 26,
 
-        buildTools           : "25.0.2",
+        buildTools           : "25.0.3",
-        androidTools         : "2.3.0",
+        androidTools         : "2.3.3",
 
         androidSupport       : "22.2.1",
 
-        kotlin               : "1.1.0",
+        kotlin               : "1.1.2-5",
 
         retrofit             : "2.1.0",
         jackson              : "2.8.7",

subsonic-api/src/integrationTest/kotlin/org/moire/ultrasonic/api/subsonic/SubsonicAPITest.kt

@@ -3,11 +3,14 @@ package org.moire.ultrasonic.api.subsonic
 import okhttp3.mockwebserver.MockResponse
 import okio.Okio
 import org.amshove.kluent.`should be`
+import org.amshove.kluent.`should contain`
 import org.amshove.kluent.`should equal`
 import org.amshove.kluent.`should not be`
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
+import org.moire.ultrasonic.api.subsonic.models.Artist
+import org.moire.ultrasonic.api.subsonic.models.Index
 import org.moire.ultrasonic.api.subsonic.models.License
 import org.moire.ultrasonic.api.subsonic.models.MusicFolder
 import org.moire.ultrasonic.api.subsonic.response.SubsonicResponse
@@ -97,6 +100,77 @@ class SubsonicAPITest {
         response.musicFolders `should be` null
     }
 
+    @Test
+    fun `Should parse get indexes ok response`() {
+        // TODO: check for shortcut parsing
+        enqueueResponse("get_indexes_ok.json")
+
+        val response = api.getApi().getIndexes(null, null).execute()
+
+        assertResponseSuccessful(response)
+        response.body().indexes `should not be` null
+        with(response.body().indexes!!) {
+            lastModified `should equal` 1491069027523
+            ignoredArticles `should equal` "The El La Los Las Le Les"
+            shortcuts `should be` null
+            indexList `should equal` mutableListOf(
+                    Index("A", listOf(
+                            Artist(50L, "Ace Of Base", parseDate("2017-04-02T20:16:29.815Z")),
+                            Artist(379L, "A Perfect Circle", null)
+                    )),
+                    Index("H", listOf(
+                            Artist(299, "Haddaway", null),
+                            Artist(297, "Halestorm", null)
+                    ))
+            )
+        }
+    }
+
+    @Test
+    fun `Should add music folder id as a query param for getIndexes api call`() {
+        enqueueResponse("get_indexes_ok.json")
+        val musicFolderId = 9L
+
+        api.getApi().getIndexes(musicFolderId, null).execute()
+
+        with(mockWebServerRule.mockWebServer.takeRequest()) {
+            requestLine `should contain` "musicFolderId=$musicFolderId"
+        }
+    }
+
+    @Test
+    fun `Should add ifModifiedSince as a query param for getIndexes api call`() {
+        enqueueResponse("get_indexes_ok.json")
+        val ifModifiedSince = System.currentTimeMillis()
+
+        api.getApi().getIndexes(null, ifModifiedSince).execute()
+
+        with(mockWebServerRule.mockWebServer.takeRequest()) {
+            requestLine `should contain` "ifModifiedSince=$ifModifiedSince"
+        }
+    }
+
+    @Test
+    fun `Should add both params to query for getIndexes api call`() {
+        enqueueResponse("get_indexes_ok.json")
+        val musicFolderId = 110L
+        val ifModifiedSince = System.currentTimeMillis()
+
+        api.getApi().getIndexes(musicFolderId, ifModifiedSince).execute()
+
+        with(mockWebServerRule.mockWebServer.takeRequest()) {
+            requestLine `should contain` "musicFolderId=$musicFolderId"
+            requestLine `should contain` "ifModifiedSince=$ifModifiedSince"
+        }
+    }
+
+    @Test
+    fun `Should parse get indexes error response`() {
+        val response = checkErrorCallParsed { api.getApi().getIndexes(null, null).execute() }
+
+        response.indexes `should be` null
+    }
+
     private fun enqueueResponse(resourceName: String) {
         mockWebServerRule.mockWebServer.enqueue(MockResponse()
                 .setBody(loadJsonResponse(resourceName)))

subsonic-api/src/integrationTest/resources/get_indexes_ok.json

@@ -0,0 +1,30 @@
+{
+  "subsonic-response" : {
+    "status" : "ok",
+    "version" : "1.13.0",
+    "indexes" : {
+      "lastModified" : 1491069027523,
+      "ignoredArticles" : "The El La Los Las Le Les",
+      "index" : [ {
+        "name" : "A",
+        "artist" : [ {
+          "id" : "50",
+          "name" : "Ace Of Base",
+          "starred" : "2017-04-02T20:16:29.815Z"
+        }, {
+          "id" : "379",
+          "name" : "A Perfect Circle"
+        } ]
+      }, {
+        "name" : "H",
+        "artist" : [ {
+          "id" : "299",
+          "name" : "Haddaway"
+        }, {
+          "id" : "297",
+          "name" : "Halestorm"
+        } ]
+      } ]
+    }
+  }
+}

subsonic-api/src/main/kotlin/org/moire/ultrasonic/api/subsonic/SubsonicAPIDefinition.kt

@@ -1,13 +1,17 @@
 package org.moire.ultrasonic.api.subsonic
 
+import org.moire.ultrasonic.api.subsonic.response.GetIndexesResponse
 import org.moire.ultrasonic.api.subsonic.response.LicenseResponse
 import org.moire.ultrasonic.api.subsonic.response.MusicFoldersResponse
 import org.moire.ultrasonic.api.subsonic.response.SubsonicResponse
 import retrofit2.Call
 import retrofit2.http.GET
+import retrofit2.http.Query
 
 /**
- * // TODO
+ * Subsonic API calls.
+ *
+ * For methods description see [http://www.subsonic.org/pages/api.jsp].
  */
 interface SubsonicAPIDefinition {
     @GET("ping.view")
@@ -18,4 +22,8 @@ interface SubsonicAPIDefinition {
 
     @GET("getMusicFolders.view")
     fun getMusicFolders(): Call<MusicFoldersResponse>
+
+    @GET("getIndexes.view")
+    fun getIndexes(@Query("musicFolderId") musicFolderId: Long?,
+                   @Query("ifModifiedSince") ifModifiedSince: Long?): Call<GetIndexesResponse>
 }

subsonic-api/src/main/kotlin/org/moire/ultrasonic/api/subsonic/models/Artist.kt

@@ -0,0 +1,7 @@
+package org.moire.ultrasonic.api.subsonic.models
+
+import java.util.*
+
+data class Artist(val id: Long,
+                  val name: String,
+                  val starred: Calendar?)

subsonic-api/src/main/kotlin/org/moire/ultrasonic/api/subsonic/models/Index.kt

@@ -0,0 +1,7 @@
+package org.moire.ultrasonic.api.subsonic.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+
+data class Index(val name: String,
+                 @JsonProperty("artist")
+                 val artists: List<Artist>)

subsonic-api/src/main/kotlin/org/moire/ultrasonic/api/subsonic/models/Indexes.kt

@@ -0,0 +1,9 @@
+package org.moire.ultrasonic.api.subsonic.models
+
+import com.fasterxml.jackson.annotation.JsonProperty
+
+data class Indexes(val lastModified: Long,
+                   val ignoredArticles: String?,
+                   @JsonProperty("index")
+                   val indexList: List<Index>,
+                   val shortcuts: List<Index>?)

subsonic-api/src/main/kotlin/org/moire/ultrasonic/api/subsonic/response/GetIndexesResponse.kt

@@ -0,0 +1,11 @@
+package org.moire.ultrasonic.api.subsonic.response
+
+import org.moire.ultrasonic.api.subsonic.SubsonicAPIVersions
+import org.moire.ultrasonic.api.subsonic.SubsonicError
+import org.moire.ultrasonic.api.subsonic.models.Indexes
+
+class GetIndexesResponse(status: Status,
+                         version: SubsonicAPIVersions,
+                         error: SubsonicError?,
+                         val indexes: Indexes?) :
+        SubsonicResponse(status, version, error)