ui: truncate visible media URL

The URL shown to the user before they click the 'Load Media' button can
take up a large portion of the screen, and doesn't offer any value to
the user.

This patch features a naive approach to truncate the URL to be a certain
number of characters if it is greater than the specified value. Right
now the maximum number of characters is set to 80.

Closes: https://github.com/damus-io/damus/issues/1950
Lightning-address: kernelkind@getalby.com
Signed-off-by: kernelkind <kernelkind@gmail.com>
Link: 20240130183525.50446-1-kernelkind@gmail.com
Signed-off-by: William Casarin <jb55@jb55.com>

damus/Util/URIParsing.swift

@@ -7,6 +7,8 @@
 
 import Foundation
 
+fileprivate let MAX_CHAR_URL = 80
+
 private func remove_damus_uri_prefix(_ s: String) -> String {
     var uri = s.replacingOccurrences(of: "https://damus.io/r/", with: "")
     uri = uri.replacingOccurrences(of: "https://damus.io/", with: "")
@@ -32,3 +34,12 @@ func remove_nostr_uri_prefix(_ s: String) -> String {
     
     return uri
 }
+
+func abbreviateURL(_ url: URL) -> String {
+    let urlString = url.absoluteString
+    
+    if urlString.count > MAX_CHAR_URL {
+        return String(urlString.prefix(MAX_CHAR_URL)) + "..."
+    }
+    return urlString
+}

damus/Views/NoteContentView.swift

@@ -188,7 +188,7 @@ struct NoteContentView: View {
                         .frame(height: 1)
                     switch artifacts.media[index] {
                     case .image(let url), .video(let url):
-                        Text(url.absoluteString)
+                        Text(abbreviateURL(url))
                             .font(eventviewsize_to_font(size, font_size: damus_state.settings.font_size))
                             .foregroundStyle(DamusColors.neutral6)
                             .multilineTextAlignment(.leading)