(split from main repo) Support older Gerrit API

Close #7200

Author: lekhmanrus

FormGerritBase.cs

@@ -1,12 +1,15 @@
 using System;
 using GitUI;
 using GitUIPluginInterfaces;
+using RestSharp;
 
 namespace Gerrit
 {
     public class FormGerritBase : GitExtensionsForm
     {
         protected GerritSettings Settings { get; private set; }
+        protected Version Version { get; private set; }
+        protected readonly RestClient client = new RestClient();
         protected readonly IGitUICommands UICommands;
         protected IGitModule Module => UICommands.GitModule;
 
@@ -36,7 +39,34 @@ protected override void OnLoad(EventArgs e)
                 return;
             }
 
+            SetRestClientUrl();
+            Version = GetGerritVersion();
+
             base.OnLoad(e);
         }
+
+        private void SetRestClientUrl()
+        {
+            string host = Settings.Host;
+
+            if (!host.StartsWith("http://") || !host.StartsWith("https://"))
+            {
+                host = "https://" + host;
+            }
+
+            if (!host.EndsWith("/"))
+            {
+                host += "/";
+            }
+
+            client.BaseUrl = new Uri(host);
+        }
+
+        private Version GetGerritVersion()
+        {
+            RestRequest request = new RestRequest("/config/server/version");
+            IRestResponse response = client.Execute(request);
+            return Version.Parse(response.Content.Replace(")]}'", "").Replace("\n", "").Replace("\"", "").Split('-')[0]);
+        }
     }
 }

FormGerritPublish.cs

@@ -37,12 +37,20 @@ public FormGerritPublish(IGitUICommands uiCommand)
             PublishType.Items.AddRange(new object[]
             {
                 new KeyValuePair<string, string>(_publishTypeReview.Text, ""),
-                new KeyValuePair<string, string>(_publishTypeWip.Text, "wip"),
-                new KeyValuePair<string, string>(_publishTypePrivate.Text, "private"),
+                new KeyValuePair<string, string>(_publishTypeWip.Text, "wip")
             });
             PublishType.SelectedIndex = 0;
         }
 
+        protected override void OnLoad(EventArgs e)
+        {
+            base.OnLoad(e);
+            if (Version >= Version.Parse("2.15"))
+            {
+                PublishType.Items.Add(new KeyValuePair<string, string>(_publishTypePrivate.Text, "private"));
+            }
+        }
+
         private void PublishClick(object sender, EventArgs e)
         {
             if (PublishChange(this))
@@ -80,7 +88,6 @@ private bool PublishChange(IWin32Window owner)
             GerritUtil.StartAgent(owner, Module, _NO_TRANSLATE_Remotes.Text);
 
             List<string> additionalOptions = new List<string>();
-            additionalOptions.Add(((KeyValuePair<string, string>)PublishType.SelectedItem).Value);
 
             string reviewers = _NO_TRANSLATE_Reviewers.Text.Trim();
             if (!string.IsNullOrEmpty(reviewers))
@@ -112,7 +119,18 @@ private bool PublishChange(IWin32Window owner)
 
             additionalOptions = additionalOptions.Where(r => !string.IsNullOrEmpty(r)).ToList();
 
-            string targetBranch = "refs/for/" + branch;
+            string publishType = ((KeyValuePair<string, string>)PublishType.SelectedItem).Value;
+            string targetRef = "for";
+            if (Version >= Version.Parse("2.15"))
+            {
+                additionalOptions.Add(publishType);
+            }
+            else if (publishType == "wip")
+            {
+                targetRef = "drafts";
+            }
+
+            string targetBranch = $"refs/{targetRef}/{branch}";
             if (additionalOptions.Count > 0)
             {
                 targetBranch += "%" + string.Join(",", additionalOptions);