Rename file.

Shared/Images/HTMLMetadata+Extension.swift

@@ -0,0 +1,56 @@
+//
+//  HTMLMetadata+Extension.swift
+//  NetNewsWire
+//
+//  Created by Brent Simmons on 11/26/17.
+//  Copyright © 2017 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+import Parser
+
+extension HTMLMetadata {
+
+	func largestAppleTouchIcon() -> String? {
+
+		guard let icons = appleTouchIcons, !icons.isEmpty else {
+			return nil
+		}
+
+		var bestImage: HTMLMetadataAppleTouchIcon? = nil
+
+		for image in icons {
+			if let size = image.size {
+				if size.width / size.height > 2 {
+					continue
+				}
+			}
+			if bestImage == nil {
+				bestImage = image
+				continue
+			}
+			if let size = image.size, let bestImageSize = bestImage!.size {
+				if size.height > bestImageSize.height && size.width > bestImageSize.width {
+					bestImage = image;
+				}
+			}
+		}
+
+		return bestImage?.urlString
+	}
+
+	func bestWebsiteIconURL() -> String? {
+
+		// TODO: metadata icons — sometimes they’re large enough to use here.
+
+		if let appleTouchIcon = largestAppleTouchIcon() {
+			return appleTouchIcon
+		}
+		
+		if let openGraphImageURL = openGraphProperties?.image?.url {
+			return openGraphImageURL
+		}
+
+		return twitterProperties?.imageURL
+	}
+}