Refactor PeerInfoUI and related modules

submodules/MapResourceToAvatarSizes/Sources/MapResourceToAvatarSizes.swift

@@ -0,0 +1,23 @@
+import Foundation
+import UIKit
+import SwiftSignalKit
+import Postbox
+import TelegramCore
+import Display
+
+public func mapResourceToAvatarSizes(postbox: Postbox, resource: MediaResource, representations: [TelegramMediaImageRepresentation]) -> Signal<[Int: Data], NoError> {
+    return postbox.mediaBox.resourceData(resource)
+    |> take(1)
+    |> map { data -> [Int: Data] in
+        guard data.complete, let image = UIImage(contentsOfFile: data.path) else {
+            return [:]
+        }
+        var result: [Int: Data] = [:]
+        for i in 0 ..< representations.count {
+            if let scaledImage = generateScaledImage(image: image, size: representations[i].dimensions, scale: 1.0), let scaledData = scaledImage.jpegData(compressionQuality: 0.8) {
+                result[i] = scaledData
+            }
+        }
+        return result
+    }
+}