[ADD] News, Browse and Settings views ported to SwiftUI

This commit contains WIP SwiftUI versions of most of the views in SideStore.

AltStore/Views/News/NewsItemView.swift

@@ -0,0 +1,101 @@
+//
+//  NewsItemView.swift
+//  SideStoreUI
+//
+//  Created by Fabian Thies on 18.11.22.
+//  Copyright © 2022 Fabian Thies. All rights reserved.
+//
+
+import SwiftUI
+import AltStoreCore
+
+struct NewsItemView: View {
+    typealias TapHandler<T> = (T) -> Void
+    
+    let newsItem: NewsItem
+    
+    private var newsSelectionHandler: TapHandler<NewsItem>? = nil
+    private var appSelectionHandler: TapHandler<StoreApp>? = nil
+    
+    init(newsItem: NewsItem) {
+        self.newsItem = newsItem
+    }
+    
+    var body: some View {
+        VStack(spacing: 12) {
+            newsContent
+                .onTapGesture {
+                    newsSelectionHandler?(newsItem)
+                }
+            
+            if let connectedApp = newsItem.storeApp {
+                NavigationLink {
+                    AppDetailView(storeApp: connectedApp)
+                } label: {
+                    AppRowView(app: connectedApp)
+                }
+                .buttonStyle(PlainButtonStyle())
+
+            }
+        }
+    }
+    
+    var newsContent: some View {
+        VStack(alignment: .leading, spacing: 12) {
+            VStack(alignment: .leading, spacing: 12) {
+                Text(newsItem.title)
+                    .font(.title2)
+                    .bold()
+                    .foregroundColor(.white)
+                
+                Text(newsItem.caption)
+                    .foregroundColor(.white.opacity(0.7))
+            }
+            .padding(24)
+            
+            if let imageUrl = newsItem.imageURL, #available(iOS 15.0, *) {
+                AsyncImage(
+                    url: imageUrl,
+                    content: { image in
+                        if let image = image.image {
+                            image
+                                .resizable()
+                                .aspectRatio(contentMode: .fit)
+                        }
+                    }
+                )
+            }
+        }
+        .frame(
+            maxWidth: .infinity,
+            alignment: .topLeading
+        )
+        .background(Color(newsItem.tintColor))
+        .clipShape(RoundedRectangle(cornerRadius: 30, style: .circular))
+    }
+    
+    
+    func onNewsSelection(_ handler: @escaping TapHandler<NewsItem>) -> Self {
+        var newSelf = self
+        newSelf.newsSelectionHandler = handler
+        return newSelf
+    }
+    
+    func onAppSelection(_ handler: @escaping TapHandler<StoreApp>) -> Self {
+        var newSelf = self
+        newSelf.appSelectionHandler = handler
+        return newSelf
+    }
+}
+
+extension URL: Identifiable {
+    public var id: String {
+        return self.absoluteString
+    }
+}
+
+//struct NewsItemView_Previews: PreviewProvider {
+//    static var previews: some View {
+//        NewsItemView()
+//    }
+//}

AltStore/Views/News/NewsView.swift

@@ -0,0 +1,55 @@
+//
+//  NewsView.swift
+//  SideStoreUI
+//
+//  Created by Fabian Thies on 18.11.22.
+//  Copyright © 2022 Fabian Thies. All rights reserved.
+//
+
+import SwiftUI
+import AltStoreCore
+
+struct NewsView: View {
+    
+    @SwiftUI.FetchRequest(sortDescriptors: [
+        NSSortDescriptor(keyPath: \NewsItem.date, ascending: false),
+        NSSortDescriptor(keyPath: \NewsItem.sortIndex, ascending: true),
+        NSSortDescriptor(keyPath: \NewsItem.sourceIdentifier, ascending: true)
+    ])
+    var news: FetchedResults<NewsItem>
+    
+    @State
+    var activeExternalUrl: URL?
+    
+    @State
+    var selectedStoreApp: StoreApp?
+    
+    var body: some View {
+        ScrollView {
+            LazyVStack(spacing: 24) {
+                ForEach(news, id: \.objectID) { newsItem in
+                    NewsItemView(newsItem: newsItem)
+                        .onNewsSelection { newsItem in
+                            self.activeExternalUrl = newsItem.externalURL
+                        }
+                        .frame(
+                            maxWidth: .infinity,
+                            alignment: .topLeading
+                        )
+                }
+            }
+            .padding()
+        }
+        .background(Color(UIColor.systemGroupedBackground).ignoresSafeArea())
+        .navigationTitle("News")
+        .sheet(item: self.$activeExternalUrl) { url in
+            SafariView(url: url)
+        }
+    }
+}
+
+struct NewsView_Previews: PreviewProvider {
+    static var previews: some View {
+        NewsView()
+    }
+}

AltStore/Views/News/NewsViewModel.swift

@@ -0,0 +1,22 @@
+//
+//  NewsViewModel.swift
+//  SideStoreUI
+//
+//  Created by Fabian Thies on 18.11.22.
+//  Copyright © 2022 Fabian Thies. All rights reserved.
+//
+
+import SwiftUI
+import AltStoreCore
+
+class NewsViewModel: ViewModel {
+    
+    @SwiftUI.FetchRequest(sortDescriptors: [
+        NSSortDescriptor(keyPath: \NewsItem.date, ascending: false),
+        NSSortDescriptor(keyPath: \NewsItem.sortIndex, ascending: true),
+        NSSortDescriptor(keyPath: \NewsItem.sourceIdentifier, ascending: true)
+    ])
+    var news: FetchedResults<NewsItem>
+    
+    init() {}
+}