First attempt at Presenter

This is admittedly pretty hard for me to wrap my head around, and I'm
not even using background threading explicitly yet. Will improve.

1 files changed, 32 insertions, 0 deletions

diff --git a/foray/Presenters/PenguinItemPresenter.swift b/foray/Presenters/PenguinItemPresenter.swift
new file mode 100644
index 0000000..0420825
--- /dev/null
+++ b/foray/Presenters/PenguinItemPresenter.swift
@@ -0,0 +1,32 @@
+//
+//  PenguinItemPresenter.swift
+//  foray
+//
+//  Created by Nicholas Tay on 24/3/2022.
+//
+
+import Foundation
+
+class PenguinItemPresenter {
+    func getData(onComplete: @escaping ([PenguinItemViewModel]) -> ()) {
+        ForayNetworkManager.shared.get(
+            url: "https://users.windblume.net/~nick/upload/dummy.json",
+            onComplete: { (apiItems: [PenguinItemModel]) in
+                onComplete(self.transform(models: apiItems))
+            })
+    }
+    
+    func transform(models: [PenguinItemModel]) -> [PenguinItemViewModel] {
+        let dateFormatter = DateFormatter()
+        dateFormatter.dateFormat = "yyyy-MM-dd"
+        
+        return models
+            .sorted { $0.releaseDate < $1.releaseDate }
+            .map {
+                PenguinItemViewModel(type: $0.type,
+                                     releaseDateFormatted: dateFormatter.string(from: $0.releaseDate),
+                                     year: Calendar.current.component(.year, from: $0.releaseDate),
+                                     id: $0.id, name: $0.name)
+            }
+    }
+}