No need for [url][/url]

No longer need to use the [url] tags to add **HTTPS** links. I want to
only link to "secure" site by default, hence only https.

Users can still use [url] tags if they want to.

The ENTIRE chat  code needs to be rewitten, as it is just packing more
code upon code. It can be done in another PR though. This just gets the
base working feature in place.

cockatrice/src/chatview.cpp

@@ -161,43 +161,53 @@ void ChatView::appendMessage(QString message, QString sender, UserLevelFlags use
     }
     cursor.setCharFormat(messageFormat);
     
-    int index = -1, bracket = -1, at = -1;
+    int index = -1, bracketFirstIndex = -1, mentionFirstIndex = -1, urlFirstIndex = -1;
     bool mentionEnabled = settingsCache->getChatMention();
     while (message.size())
     {
         // search for the first [ or @
-        bracket = message.indexOf('[');
-        at = mentionEnabled ? message.indexOf('@') : -1;
-        if(bracket == -1)
-        {
-            if(at == -1)
-            {
-                // quick way out
-                cursor.insertText(message);
-                break;
+        bracketFirstIndex = message.indexOf('[');
+        mentionFirstIndex = mentionEnabled ? message.indexOf('@') : -1;
+        urlFirstIndex = message.indexOf("https://");
+        if(bracketFirstIndex == -1) {
+            if(mentionFirstIndex == -1) {
+                if (urlFirstIndex == -1) {
+                    // quick way out
+                    cursor.insertText(message);
+                    break;
+                } else {
+                    // url
+                    index = urlFirstIndex;
+                }
             } else {
-                // mention
-                index = at;
+                if (urlFirstIndex == -1) {
+                    // mention
+                    index = mentionFirstIndex;
+                } else {
+                    index = std::min(urlFirstIndex, mentionFirstIndex);
+                }
             }
         } else {
-            if(at == -1)
-            {
+            if(mentionFirstIndex == -1) {
                 // bracket
-                index = bracket;
+                index = bracketFirstIndex;
             } else {
                 // both, pick up the first one
-                index = std::min(bracket, at);
+                index = std::min(bracketFirstIndex, mentionFirstIndex);
+            }
+            if(urlFirstIndex != -1) {
+                index = std::min(index, urlFirstIndex);
             }
         }
 
-        // insert the message text up to the [ / @
+        // insert the message text up to the [ / @ / https://
         if(index > 0)
         {
             cursor.insertText(message.left(index), defaultFormat);
             message = message.mid(index);            
         }
 
-        if(index == bracket)
+        if(index == bracketFirstIndex)
         {
             if (message.startsWith("[card]")) {
                 message = message.mid(6);
@@ -234,6 +244,20 @@ void ChatView::appendMessage(QString message, QString sender, UserLevelFlags use
                 cursor.insertText("[", defaultFormat);
                 message = message.mid(1);
             }
+        } else if (index == urlFirstIndex) {
+            int urlEndIndex = message.indexOf(QRegExp("\\s"), 0);
+            if (urlEndIndex == -1)
+                urlEndIndex = message.size();
+            QString urlText = message.left(urlEndIndex);
+            QUrl qUrl(urlText);
+            if (qUrl.isValid())
+                appendUrlTag(cursor, urlText);
+            else
+                cursor.insertText(urlText);
+            if (urlEndIndex == -1)
+                message.clear();
+            else
+                message = message.mid(urlEndIndex);
         } else {
             if (message.startsWith(mention, Qt::CaseInsensitive)) {
                 // you have been mentioned