Implement zipping of requests

kozmi55 · kozmi55 · commit 61de3640a2ed · 2017-07-28T10:33:22.000+02:00
diff --git a/app/src/main/java/com/example/tamaskozmer/kotlinrxexample/model/UserRepository.kt b/app/src/main/java/com/example/tamaskozmer/kotlinrxexample/model/UserRepository.kt
@@ -1,8 +1,12 @@
 package com.example.tamaskozmer.kotlinrxexample.model
 
+import com.example.tamaskozmer.kotlinrxexample.model.entities.AnswerListModel
+import com.example.tamaskozmer.kotlinrxexample.model.entities.AnswerViewModel
 import com.example.tamaskozmer.kotlinrxexample.model.entities.DetailsModel
+import com.example.tamaskozmer.kotlinrxexample.model.entities.QuestionListModel
 import com.example.tamaskozmer.kotlinrxexample.model.services.UserService
 import io.reactivex.Single
+import io.reactivex.functions.Function3
 
 /**
  * Created by Tamas_Kozmer on 7/4/2017.
@@ -13,10 +17,28 @@ class UserRepository(
     fun getUsers(page: Int) = userService.getUsers(page)
 
     fun getDetails(userId: Long) : Single<DetailsModel> {
-        // TODO
-        return Single.create { emitter ->
-            val detailsModel = DetailsModel(emptyList(), emptyList(), emptyList())
-            emitter.onSuccess(detailsModel)
-        }
+        return Single.zip(
+                userService.getQuestionsByUser(userId),
+                userService.getAnswersByUser(userId),
+                userService.getFavoritesByUser(userId),
+                Function3<QuestionListModel, AnswerListModel, QuestionListModel, DetailsModel>
+                { questions, answers, favorites ->
+                    createDetailsModel(questions, answers, favorites) })
+    }
+
+    private fun createDetailsModel(questionsModel: QuestionListModel, answersModel: AnswerListModel,
+                                   favoritesModel: QuestionListModel): DetailsModel {
+        val questions = questionsModel.items
+                .take(3)
+
+        val favorites = favoritesModel.items
+                .take(3)
+
+        val answers = answersModel.items
+                .filter { it.accepted }
+                .take(3)
+                .map { AnswerViewModel(it.answerId, it.score, it.accepted, "TODO") }
+
+        return DetailsModel(questions, answers, favorites)
     }
 }
