2 files changed, 193 insertions, 0 deletions
diff --git a/Sora/Views/Post/Details/PostDetailsImageView.swift b/Sora/Views/Post/Details/PostDetailsImageView.swift
new file mode 100644
index 0000000..d6307d5
--- /dev/null
+++ b/Sora/Views/Post/Details/PostDetailsImageView.swift
@@ -0,0 +1,106 @@
+import SwiftUI
+
+struct PostDetailsImageView<Placeholder: View>: View {
+  @EnvironmentObject var settings: Settings
+  var url: URL?
+  @Binding var loadingState: BooruPostLoadingState
+  var finalLoadingState: BooruPostLoadingState
+  var postURL: URL?
+  let placeholder: () -> Placeholder
+  @State private var currentScale: CGFloat = 1.0
+  @State private var finalScale: CGFloat = 1.0
+  @State private var currentOffset: CGSize = .zero
+  @State private var finalOffset: CGSize = .zero
+
+  #if os(iOS)
+    var keyWindow: UIWindow? {
+      guard
+        let window = UIApplication.shared.connectedScenes
+          .compactMap({ $0 as? UIWindowScene })
+          .flatMap(\.windows)
+          .first(where: \.isKeyWindow)
+      else {
+        return nil
+      }
+
+      return window
+    }
+  #endif
+
+  var body: some View {
+    AsyncImage(url: url) { image in
+      InteractiveImageView(image: image)
+        .onAppear {
+          loadingState = finalLoadingState
+        }
+        .contextMenu {
+          #if os(iOS)
+            Button {
+              guard let url else { return }
+
+              URLSession.shared.dataTask(with: url) { data, _, _ in
+                guard let data, let uiImage = UIImage(data: data) else { return }
+
+                UIImageWriteToSavedPhotosAlbum(uiImage, nil, nil, nil)
+              }
+              .resume()
+            } label: {
+              Label("Save Image", systemImage: "square.and.arrow.down")
+            }
+          #endif
+
+          #if os(iOS)
+            if settings.enableShareShortcut {
+              Button {
+                keyWindow?.rootViewController?.present(
+                  UIActivityViewController(
+                    activityItems: [url ?? URL(string: "")!], applicationActivities: nil
+                  ), animated: true
+                )
+              } label: {
+                Label("Share Image", systemImage: "square.and.arrow.up")
+              }
+            }
+          #endif
+
+          if let url = postURL {
+            Button {
+              #if os(iOS)
+                UIApplication.shared.open(url)
+              #else
+                NSWorkspace.shared.open(url)
+              #endif
+            } label: {
+              Label("Open in Safari", systemImage: "safari")
+            }
+          }
+        }
+    } placeholder: {
+      placeholder()
+        .onAppear {
+          loadingState = .loadingPreview
+        }
+    }
+  }
+
+  init(
+    url: URL?,
+    loadingStage: Binding<BooruPostLoadingState>,
+    finalLoadingState: BooruPostLoadingState = .loadingFile,
+    postURL: URL? = nil,
+    @ViewBuilder placeholder: @escaping () -> Placeholder = {
+      GeometryReader { geometry in
+        ProgressView()
+          .frame(width: geometry.size.width, height: geometry.size.height)
+          .position(x: geometry.size.width / 2, y: geometry.size.height / 2)
+          .padding()
+      }
+    }
+  ) {
+    self.url = url
+    _loadingState = loadingStage
+    self.finalLoadingState = finalLoadingState
+    self.postURL = postURL
+    self.placeholder = placeholder
+  }
+}
diff --git a/Sora/Views/Post/Details/PostDetailsView.swift b/Sora/Views/Post/Details/PostDetailsView.swift
new file mode 100644
index 0000000..3c004ca
--- /dev/null
+++ b/Sora/Views/Post/Details/PostDetailsView.swift
@@ -0,0 +1,87 @@
+import SwiftUI
+
+struct PostDetailsView: View {
+  @EnvironmentObject var settings: Settings
+  let post: BooruPost
+  @State private var loadingStage: BooruPostLoadingState = .loadingPreview
+  private var imageURL: URL? {
+    switch settings.detailViewType {
+    case .preview:
+      post.previewURL
+
+    case .sample:
+      post.sampleURL
+
+    case .original:
+      post.fileURL
+    }
+  }
+
+  var body: some View {
+    VStack(spacing: 0) {
+      PostDetailsImageView(
+        url: imageURL,
+        loadingStage: $loadingStage,
+        finalLoadingState: .loaded,
+        postURL: URL(string: "https://yande.re/post/show/\(post.id)")!
+      ) {
+        PostDetailsImageView(
+          url: post.previewURL,
+          loadingStage: $loadingStage
+        )
+        .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .center)
+        .id(post.previewURL)
+      }
+      .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .center)
+      .id(imageURL)
+      .padding(0)
+      .zIndex(0)
+
+      VStack(spacing: 5) {
+        HStack {
+          Text(post.tags.joined(separator: ", "))
+        }
+        .frame(maxWidth: .infinity, alignment: .leading)
+
+        HStack {
+          Text(
+            post.createdAt.formatted()
+          )
+          .frame(maxWidth: .infinity, alignment: .leading)
+
+          Group {
+            switch loadingStage {
+            case .loadingPreview:
+              Text("Loading preview …")
+
+            case .loadingFile:
+              Text("Loading \(settings.detailViewType.rawValue) …")
+
+            case .loaded:
+              EmptyView()
+            }
+          }
+          .padding(.trailing, 5)
+        }
+        .frame(maxWidth: .infinity, alignment: .leading)
+        .foregroundStyle(.secondary)
+      }
+      .padding(.horizontal, 10)
+      .padding(.vertical, 10 / 1.33)
+      .textSelection(.enabled)
+      .font(.footnote)
+      #if os(iOS)
+        .background(.ultraThinMaterial)
+      #else
+        .background(.opacity(0.1))
+      #endif
+      .zIndex(1)
+    }
+    .navigationTitle("Details")
+    #if os(iOS)
+      .navigationBarTitleDisplayMode(.inline)
+      .toolbarBackground(.visible, for: .navigationBar)
+      .toolbarBackground(.ultraThinMaterial, for: .navigationBar)
+    #endif
+  }
+}