From b9e359ba835e11f0d0c533e0b321a23fd3493a7e Mon Sep 17 00:00:00 2001
From: Shadowfacts <me@shadowfacts.net>
Date: Tue, 31 Dec 2019 00:13:09 -0500
Subject: [PATCH] Fix custom instance domains not being parsed correctly

---
 .../InstanceSelectorTableViewController.swift | 32 ++++++++++++++++---
 1 file changed, 28 insertions(+), 4 deletions(-)

diff --git a/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift b/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
index 468ce8362a..572e2b2f22 100644
--- a/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
+++ b/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
@@ -74,13 +74,37 @@ class InstanceSelectorTableViewController: UITableViewController {
         loadRecommendedInstances()
     }
     
-    private func updateSpecificInstance(domain: String) {
-        var components = URLComponents(string: domain)!
+    private func parseURLComponents(input: String) -> URLComponents {
+        // we can't just use the URLComponents(string:) initializer, because when given just a domain (w/o protocol), it interprets it as the path
+        var input = input
+        var components = URLComponents()
+        // extract protocol
+        if input.contains("://") {
+            let parts = input.components(separatedBy: "://")
+            components.scheme = parts.first!
+            input = parts.last!
+        }
         if components.scheme != "https" && components.scheme != "http" {
             components.scheme = "https"
         }
-        components.path = "/"
-        
+        // drop path
+        if input.contains("/") {
+            let parts = input.components(separatedBy: "/")
+            input = parts.first!
+        }
+        // parse port
+        if input.contains(":") {
+            let parts = input.components(separatedBy: ":")
+            input = parts.first!
+            components.port = Int(parts.last!)
+        }
+        components.host = input
+        return components
+    }
+    
+    private func updateSpecificInstance(domain: String) {
+        let components = parseURLComponents(input: domain)
+
         let client = Client(baseURL: components.url!)
         let request = client.getInstance()
         client.run(request) { (response) in