Supporting delete post

CleanArchitectureRxSwift.xcodeproj/project.pbxproj

@@ -86,6 +86,7 @@
 		8B0507E0C0AB1064B7372844 /* Pods_RealmPlatform.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 006BDFA0A26FDD0EBA50E777 /* Pods_RealmPlatform.framework */; };
 		8E549C0D492F9142D1CF88F2 /* Pods_Network.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 8C5EFC85E3DC2D413D89C8F9 /* Pods_Network.framework */; };
 		9CBC9DB91790C744BC17C099 /* Pods_CleanArchitectureRxSwiftTests.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 550BE321D44EC009D885BBE1 /* Pods_CleanArchitectureRxSwiftTests.framework */; };
+		B60A97CE1FB0C17600009C51 /* EditPostNavigator.swift in Sources */ = {isa = PBXBuildFile; fileRef = B60A97CD1FB0C17600009C51 /* EditPostNavigator.swift */; };
 		BC8D07731E9309D000B4D96A /* UidTransform.swift in Sources */ = {isa = PBXBuildFile; fileRef = BC8D07721E9309D000B4D96A /* UidTransform.swift */; };
 		BCD8C8AC1E73421300F79E3E /* Address+Mapping.swift in Sources */ = {isa = PBXBuildFile; fileRef = BCD8C8AB1E73421300F79E3E /* Address+Mapping.swift */; };
 		BCD8C8AE1E73421E00F79E3E /* Album+Mapping.swift in Sources */ = {isa = PBXBuildFile; fileRef = BCD8C8AD1E73421E00F79E3E /* Album+Mapping.swift */; };
@@ -369,6 +370,7 @@
 		A8E1F5AE93A531609690A036 /* Pods-RealmPlatformTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-RealmPlatformTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-RealmPlatformTests/Pods-RealmPlatformTests.debug.xcconfig"; sourceTree = "<group>"; };
 		B0092014AEC057C48B9745EA /* Pods-DomainTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-DomainTests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-DomainTests/Pods-DomainTests.debug.xcconfig"; sourceTree = "<group>"; };
 		B5764703F1E249BEDFC31014 /* Pods_DomainTests.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_DomainTests.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+		B60A97CD1FB0C17600009C51 /* EditPostNavigator.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = EditPostNavigator.swift; sourceTree = "<group>"; };
 		BA0D3602A9ABB65C8AF19365 /* Pods_RealmPlatformTests.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_RealmPlatformTests.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		BC8D07721E9309D000B4D96A /* UidTransform.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = UidTransform.swift; sourceTree = "<group>"; };
 		BCD8C8AB1E73421300F79E3E /* Address+Mapping.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "Address+Mapping.swift"; sourceTree = "<group>"; };
@@ -559,13 +561,6 @@
 			path = Encodable;
 			sourceTree = "<group>";
 		};
-		25707C721F23807C00F852F7 /* Repository */ = {
-			isa = PBXGroup;
-			children = (
-			);
-			name = Repository;
-			sourceTree = "<group>";
-		};
 		25707C731F2380E500F852F7 /* Cache */ = {
 			isa = PBXGroup;
 			children = (
@@ -882,6 +877,7 @@
 		515F9401ED57113EEF898228 /* EditPost */ = {
 			isa = PBXGroup;
 			children = (
+				B60A97CD1FB0C17600009C51 /* EditPostNavigator.swift */,
 				2526A7151E5A2CD30078870E /* EditPostViewController.swift */,
 				515F9ACD2D474324015B691C /* EditPostViewModel.swift */,
 			);
@@ -1019,7 +1015,6 @@
 			isa = PBXGroup;
 			children = (
 				25707C731F2380E500F852F7 /* Cache */,
-				25707C721F23807C00F852F7 /* Repository */,
 				BD107F671E72A0DC0043D900 /* API */,
 				BD107F731E72B1790043D900 /* Entries */,
 				BD50EEF31E7AD99400CBEBD4 /* Network */,
@@ -1903,6 +1898,7 @@
 				515F977483234BB090F6D704 /* PostsViewController.swift in Sources */,
 				515F9083DB52FEDFEE97A5E6 /* PostsViewModel.swift in Sources */,
 				515F9590146BEE2A0626CFF1 /* PostTableViewCell.swift in Sources */,
+				B60A97CE1FB0C17600009C51 /* EditPostNavigator.swift in Sources */,
 				515F95CFED58045AB6B168A4 /* CreatePostViewController.swift in Sources */,
 				7BA4DC961F3AEA380043DAB6 /* PostItemViewModel.swift in Sources */,
 				515F9625B58BCFB77F4AF678 /* CreatePostNavigator.swift in Sources */,

CleanArchitectureRxSwift/Base.lproj/Main.storyboard

@@ -1,12 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11762" systemVersion="16C67" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12120" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES">
     <device id="retina4_7" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11757"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12088"/>
         <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
+        <capability name="Navigation items with more than one left or right bar item" minToolsVersion="7.0"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
@@ -30,7 +31,7 @@
                                         <rect key="frame" x="0.0" y="28" width="375" height="82"/>
                                         <autoresizingMask key="autoresizingMask"/>
                                         <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="wsn-Eu-k9m" id="54K-Ut-RUc">
-                                            <rect key="frame" x="0.0" y="0.0" width="375" height="81.5"/>
+                                            <rect key="frame" x="0.0" y="0.0" width="375" height="82"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                             <subviews>
                                                 <stackView opaque="NO" contentMode="scaleToFill" axis="vertical" translatesAutoresizingMaskIntoConstraints="NO" id="irm-SF-QMY">
@@ -224,9 +225,13 @@
                         </constraints>
                     </view>
                     <navigationItem key="navigationItem" id="FpO-rx-nwd">
-                        <barButtonItem key="rightBarButtonItem" title="Edit" id="wmL-GG-UqC"/>
+                        <rightBarButtonItems>
+                            <barButtonItem title="Edit" id="wmL-GG-UqC"/>
+                            <barButtonItem systemItem="trash" id="uEG-LJ-KaS" userLabel="Delete Button"/>
+                        </rightBarButtonItems>
                     </navigationItem>
                     <connections>
+                        <outlet property="deleteButton" destination="uEG-LJ-KaS" id="NO6-Dy-opq"/>
                         <outlet property="detailsTextView" destination="vu6-3Q-g43" id="0CY-zu-MDS"/>
                         <outlet property="editButton" destination="wmL-GG-UqC" id="cmt-p1-9HO"/>
                         <outlet property="titleTextField" destination="Z0e-ow-m8L" id="7Xb-cG-ojy"/>

CleanArchitectureRxSwift/Scenes/AllPosts/PostsNavigator.swift

@@ -36,10 +36,11 @@ class DefaultPostsNavigator: PostsNavigator {
         let nc = UINavigationController(rootViewController: vc)
         navigationController.present(nc, animated: true, completion: nil)
     }
-    
+
     func toPost(_ post: Post) {
+        let navigator = DefaultEditPostNavigator(navigationController: navigationController)
+        let viewModel = EditPostViewModel(post: post, useCase: services.makePostsUseCase(), navigator: navigator)
         let vc = storyBoard.instantiateViewController(ofType: EditPostViewController.self)
-        let viewModel = EditPostViewModel(post: post, useCase: services.makePostsUseCase())
         vc.viewModel = viewModel
         navigationController.pushViewController(vc, animated: true)
     }

CleanArchitectureRxSwift/Scenes/CreatePost/CreatePostViewModel.swift

@@ -28,10 +28,9 @@ final class CreatePostViewModel: ViewModelType {
             return !$0.0.isEmpty && !$0.1.isEmpty && !$1
         }
 
-
         let save = input.saveTrigger.withLatestFrom(titleAndDetails)
                 .map { (title, content) in
-                    return Post(body: content, title: title, uid: "5", userId: "7")
+                    return Post(body: content, title: title)
                 }
                 .flatMapLatest { [unowned self] in
                     return self.createPostUseCase.save(post: $0)

CleanArchitectureRxSwift/Scenes/EditPost/EditPostNavigator.swift

@@ -0,0 +1,19 @@
+import Foundation
+import UIKit
+import Domain
+
+protocol EditPostNavigator {
+    func toPosts()
+}
+
+final class DefaultEditPostNavigator: EditPostNavigator {
+    private let navigationController: UINavigationController
+
+    init(navigationController: UINavigationController) {
+        self.navigationController = navigationController
+    }
+
+    func toPosts() {
+        navigationController.popViewController(animated: true)
+    }
+}

CleanArchitectureRxSwift/Scenes/EditPost/EditPostViewController.swift

@@ -7,6 +7,7 @@ final class EditPostViewController: UIViewController {
     private let disposeBag = DisposeBag()
 
     @IBOutlet weak var editButton: UIBarButtonItem!
+    @IBOutlet weak var deleteButton: UIBarButtonItem!
     @IBOutlet weak var titleTextField: UITextField!
     @IBOutlet weak var detailsTextView: UITextView!
 
@@ -15,20 +16,44 @@ final class EditPostViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        let input = EditPostViewModel.Input(editTrigger: editButton.rx.tap.asDriver(),
-                                            title: titleTextField.rx.text.orEmpty.asDriver(),
-                                            details: detailsTextView.rx.text.orEmpty.asDriver())
+        let deleteTrigger = deleteButton.rx.tap.flatMap {
+            return Observable<Void>.create { observer in
+
+                let alert = UIAlertController(title: "Delete Post",
+                    message: "Are you sure you want to delete this post?",
+                    preferredStyle: .alert
+                )
+
+                [("Yes", UIAlertActionStyle.destructive, { _ -> () in observer.onNext() }),
+                 ("No", UIAlertActionStyle.cancel, { _ -> () in observer.onCompleted() })]
+                .map({ UIAlertAction(title: $0, style: $1, handler: $2) })
+                .forEach(alert.addAction)
+
+                self.present(alert, animated: true, completion: nil)
+
+                return Disposables.create()
+            }
+        }
+
+        let input = EditPostViewModel.Input(
+            editTrigger: editButton.rx.tap.asDriver(),
+            deleteTrigger: deleteTrigger.asDriverOnErrorJustComplete(),
+            title: titleTextField.rx.text.orEmpty.asDriver(),
+            details: detailsTextView.rx.text.orEmpty.asDriver()
+        )
+
         let output = viewModel.transform(input: input)
-
-        output.editButtonTitle.drive(editButton.rx.title).addDisposableTo(disposeBag)
-        output.editing.drive(titleTextField.rx.isEnabled).addDisposableTo(disposeBag)
-        output.editing.drive(detailsTextView.rx.isEditable).addDisposableTo(disposeBag)
-        output.post.drive(postBinding).addDisposableTo(disposeBag)
-        output.save.drive().addDisposableTo(disposeBag)
-        output.error.drive(errorBinding).addDisposableTo(disposeBag)
+
+        [output.editButtonTitle.drive(editButton.rx.title),
+        output.editing.drive(titleTextField.rx.isEnabled),
+        output.editing.drive(detailsTextView.rx.isEditable),
+        output.post.drive(postBinding),
+        output.save.drive(),
+        output.error.drive(errorBinding),
+        output.delete.drive()]
+        .forEach({$0.addDisposableTo(disposeBag)})
     }
 
-
     var postBinding: UIBindingObserver<EditPostViewController, Post> {
         return UIBindingObserver(UIElement: self, binding: { (vc, post) in
             vc.titleTextField.text = post.title
@@ -60,4 +85,3 @@ extension Reactive where Base: UITextView {
         })
     }
 }
-

CleanArchitectureRxSwift/Scenes/EditPost/EditPostViewModel.swift

@@ -5,10 +5,12 @@ import RxCocoa
 final class EditPostViewModel: ViewModelType {
     private let post: Post
     private let useCase: PostsUseCase
+    private let navigator: EditPostNavigator
 
-    init(post: Post, useCase: PostsUseCase) {
+    init(post: Post, useCase: PostsUseCase, navigator: EditPostNavigator) {
         self.post = post
         self.useCase = useCase
+        self.navigator = navigator
     }
 
     func transform(input: Input) -> Output {
@@ -24,7 +26,7 @@ final class EditPostViewModel: ViewModelType {
             $0
         }
         let post = Driver.combineLatest(Driver.just(self.post), titleAndDetails) { (post, titleAndDetails) -> Post in
-            return Post(body: titleAndDetails.1, title: titleAndDetails.0, uid: "7", userId: "8")
+            return Post(body: titleAndDetails.1, title: titleAndDetails.0, uid: post.uid, userId: post.userId, createdAt: post.createdAt)
         }.startWith(self.post)
         let editButtonTitle = editing.map { editing -> String in
             return editing == true ? "Save" : "Edit"
@@ -35,8 +37,19 @@ final class EditPostViewModel: ViewModelType {
                             .trackError(errorTracker)
                             .asDriverOnErrorJustComplete()
                 }
+
+        let deletePost = input.deleteTrigger.withLatestFrom(post)
+            .flatMapLatest { post in
+                return self.useCase.delete(post: post)
+                    .trackError(errorTracker)
+                    .asDriverOnErrorJustComplete()
+            }.do(onNext: {
+                self.navigator.toPosts()
+            })
+
         return Output(editButtonTitle: editButtonTitle,
                 save: savePost,
+                delete: deletePost,
                 editing: editing,
                 post: post,
                 error: errorTracker.asDriver())
@@ -46,13 +59,15 @@ final class EditPostViewModel: ViewModelType {
 extension EditPostViewModel {
     struct Input {
         let editTrigger: Driver<Void>
+        let deleteTrigger: Driver<Void>
         let title: Driver<String>
         let details: Driver<String>
     }
 
     struct Output {
         let editButtonTitle: Driver<String>
         let save: Driver<Void>
+        let delete: Driver<Void>
         let editing: Driver<Bool>
         let post: Driver<Post>
         let error: Driver<Error>

CoreDataPlatform/Entities/CDPost+CoreDataProperties.swift

@@ -20,5 +20,5 @@ extension CDPost {
     @NSManaged public var title: String?
     @NSManaged public var uid: String?
     @NSManaged public var userId: String?
-
+    @NSManaged public var createdAt: String?
 }

CoreDataPlatform/Entities/CDPost+Ext.swift

@@ -18,14 +18,16 @@ extension CDPost {
     static var body: Attribute<String> { return Attribute("body")}
     static var userId: Attribute<String> { return Attribute("userId")}
     static var uid: Attribute<String> { return Attribute("uid")}
+    static var createdAt: Attribute<String> { return Attribute("createdAt")}
 }
 
 extension CDPost: DomainConvertibleType {
     func asDomain() -> Post {
         return Post(body: body!,
                     title: title!,
                     uid: uid!,
-                    userId: userId!)
+                    userId: userId!,
+                    createdAt: createdAt!)
     }
 }
 
@@ -43,5 +45,6 @@ extension Post: CoreDataRepresentable {
         entity.title = title
         entity.body = body
         entity.userId = userId
+        entity.createdAt = createdAt
     }
 }

CoreDataPlatform/Model.xcdatamodeld/Model.xcdatamodel/contents

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="12141" systemVersion="16E195" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="12141" systemVersion="16G29" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="CDAddress" representedClassName=".CDAddress" syncable="YES">
         <attribute name="city" attributeType="String" syncable="YES"/>
         <attribute name="street" attributeType="String" syncable="YES"/>
@@ -40,6 +40,7 @@
     </entity>
     <entity name="CDPost" representedClassName=".CDPost" syncable="YES">
         <attribute name="body" attributeType="String" syncable="YES"/>
+        <attribute name="createdAt" attributeType="String" syncable="YES"/>
         <attribute name="title" attributeType="String" syncable="YES"/>
         <attribute name="uid" attributeType="String" indexed="YES" syncable="YES"/>
         <attribute name="userId" attributeType="String" syncable="YES"/>
@@ -67,7 +68,7 @@
         <element name="CDCompany" positionX="-18" positionY="45" width="128" height="105"/>
         <element name="CDLocation" positionX="-36" positionY="27" width="128" height="90"/>
         <element name="CDPhoto" positionX="0" positionY="54" width="128" height="120"/>
-        <element name="CDPost" positionX="-63" positionY="-18" width="128" height="105"/>
+        <element name="CDPost" positionX="-63" positionY="-18" width="128" height="120"/>
         <element name="CDTodo" positionX="18" positionY="63" width="128" height="105"/>
         <element name="CDUser" positionX="36" positionY="81" width="128" height="165"/>
     </elements>

CoreDataPlatform/Repository/Repository.swift

@@ -1,22 +1,17 @@
 import Foundation
 import CoreData
 import RxSwift
+import QueryKit
 
-func abstractMethod() -> Never {
-    fatalError("abstract method")
+protocol AbstractRepository {
+    associatedtype T
+    func query(with predicate: NSPredicate?,
+               sortDescriptors: [NSSortDescriptor]?) -> Observable<[T]>
+    func save(entity: T) -> Observable<Void>
+    func delete(entity: T) -> Observable<Void>
 }
 
-class AbstractRepository<T> {
-    func query(with predicate: NSPredicate? = nil,
-               sortDescriptors: [NSSortDescriptor]? = nil) -> Observable<[T]> {
-        abstractMethod()
-    }
-    func save(entity: T) -> Observable<Void> {
-        abstractMethod()
-    }
-}
-
-final class Repository<T: CoreDataRepresentable>: AbstractRepository<T> where T == T.CoreDataType.DomainType {
+final class Repository<T: CoreDataRepresentable>: AbstractRepository where T == T.CoreDataType.DomainType {
     private let context: NSManagedObjectContext
     private let scheduler: ContextScheduler
 
@@ -25,7 +20,7 @@ final class Repository<T: CoreDataRepresentable>: AbstractRepository<T> where T
         self.scheduler = ContextScheduler(context: context)
     }
 
-    override func query(with predicate: NSPredicate? = nil,
+    func query(with predicate: NSPredicate? = nil,
                         sortDescriptors: [NSSortDescriptor]? = nil) -> Observable<[T]> {
         let request = T.CoreDataType.fetchRequest()
         request.predicate = predicate
@@ -35,10 +30,17 @@ final class Repository<T: CoreDataRepresentable>: AbstractRepository<T> where T
             .subscribeOn(scheduler)
     }
 
-    override func save(entity: T) -> Observable<Void> {
+    func save(entity: T) -> Observable<Void> {
         return entity.sync(in: context)
             .mapToVoid()
             .flatMapLatest(context.rx.save)
             .subscribeOn(scheduler)
     }
+
+    func delete(entity: T) -> Observable<Void> {
+        return entity.sync(in: context)
+            .map({$0 as! NSManagedObject})
+            .flatMapLatest(context.rx.delete)
+    }
+
 }

CoreDataPlatform/RxCoreData/NSManagedObjectContext+Rx.swift

@@ -37,6 +37,16 @@ extension Reactive where Base: NSManagedObjectContext {
         }
     }
 
+    func delete<T: NSManagedObject>(entity: T) -> Observable<Void> {
+        return Observable.create { observer in
+            self.base.delete(entity)
+            observer.onNext()
+            return Disposables.create()
+        }.flatMapLatest {
+            self.save()
+        }
+    }
+
     func first<T: NSFetchRequestResult>(ofType: T.Type = T.self, with predicate: NSPredicate) -> Observable<T?> {
         return Observable.deferred {
             let entityName = String(describing: T.self)