test(ios): cover settings host/port parsing

apps/ios/Sources/Settings/SettingsNetworkingHelpers.swift

@@ -0,0 +1,40 @@
+import Foundation
+
+struct SettingsHostPort: Equatable {
+    var host: String
+    var port: Int
+}
+
+enum SettingsNetworkingHelpers {
+    static func parseHostPort(from address: String) -> SettingsHostPort? {
+        let trimmed = address.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !trimmed.isEmpty else { return nil }
+
+        if trimmed.hasPrefix("["),
+           let close = trimmed.firstIndex(of: "]"),
+           close < trimmed.endIndex
+        {
+            let host = String(trimmed[trimmed.index(after: trimmed.startIndex)..<close])
+            let portStart = trimmed.index(after: close)
+            guard portStart < trimmed.endIndex, trimmed[portStart] == ":" else { return nil }
+            let portString = String(trimmed[trimmed.index(after: portStart)...])
+            guard let port = Int(portString) else { return nil }
+            return SettingsHostPort(host: host, port: port)
+        }
+
+        guard let colon = trimmed.lastIndex(of: ":") else { return nil }
+        let host = String(trimmed[..<colon])
+        let portString = String(trimmed[trimmed.index(after: colon)...])
+        guard !host.isEmpty, let port = Int(portString) else { return nil }
+        return SettingsHostPort(host: host, port: port)
+    }
+
+    static func httpURLString(host: String?, port: Int?, fallback: String) -> String {
+        if let host, let port {
+            let needsBrackets = host.contains(":") && !host.hasPrefix("[") && !host.hasSuffix("]")
+            let hostPart = needsBrackets ? "[\(host)]" : host
+            return "http://\(hostPart):\(port)"
+        }
+        return "http://\(fallback)"
+    }
+}