Use shared installer code in GUI and fix reinstall problems

Core/ModuleInstaller.cs

@@ -190,12 +190,12 @@ public void InstallList(
             {
                 if (!ksp.Cache.IsCachedZip(module.download))
                 {
-                    User.RaiseMessage(" * {0} {1}", module.name, module.version);
+                    User.RaiseMessage(" * {0} {1} ({2})", module.name, module.version, module.download.Host);
                     downloads.Add(module);
                 }
                 else
                 {
-                    User.RaiseMessage(" * {0} {1}(cached)", module.name, module.version);
+                    User.RaiseMessage(" * {0} {1} (cached)", module.name, module.version);
                 }
             }
 
@@ -255,23 +255,6 @@ public void InstallList(
             User.RaiseProgress("Done!\r\n", 100);
         }
 
-        public ModuleResolution ResolveModules(IEnumerable<CkanModule> modules, RelationshipResolverOptions options)
-        {
-            var resolver = new RelationshipResolver(modules, options, registry_manager.registry, ksp.VersionCriteria());
-            return new ModuleResolution(resolver.ModList(), m => ksp.Cache.IsCachedZip(m.download));
-        }
-
-        public void EnsureCache(List<CkanModule> modules, IDownloader downloader = null)
-        {
-            if (!modules.Any())
-            {
-                return;
-            }
-
-            downloader = downloader ?? new NetAsyncModulesDownloader(User);
-            downloader.DownloadModules(ksp.Cache, modules);
-        }
-
         public void InstallList(ModuleResolution modules, RelationshipResolverOptions options)
         {
             // We're about to install all our mods; so begin our transaction.
@@ -1037,7 +1020,7 @@ public void AddRemove(IEnumerable<CkanModule> add = null, IEnumerable<string> re
         /// Will *re-install* with warning even if an upgrade is not available.
         /// Throws ModuleNotFoundKraken if module is not installed, or not available.
         /// </summary>
-        public void Upgrade(IEnumerable<string> identifiers, NetAsyncModulesDownloader netAsyncDownloader, bool enforceConsistency = true)
+        public void Upgrade(IEnumerable<string> identifiers, IDownloader netAsyncDownloader, bool enforceConsistency = true)
         {
             var options = new RelationshipResolverOptions();
 
@@ -1054,7 +1037,7 @@ public void Upgrade(IEnumerable<string> identifiers, NetAsyncModulesDownloader n
         /// Will *re-install* or *downgrade* (with a warning) as well as upgrade.
         /// Throws ModuleNotFoundKraken if a module is not installed.
         /// </summary>
-        public void Upgrade(IEnumerable<CkanModule> modules, NetAsyncModulesDownloader netAsyncDownloader, bool enforceConsistency = true)
+        public void Upgrade(IEnumerable<CkanModule> modules, IDownloader netAsyncDownloader, bool enforceConsistency = true)
         {
             // Start by making sure we've downloaded everything.
             DownloadModules(modules, netAsyncDownloader);
@@ -1114,7 +1097,7 @@ public void Upgrade(IEnumerable<CkanModule> modules, NetAsyncModulesDownloader n
         /// <summary>
         /// Makes sure all the specified mods are downloaded.
         /// </summary>
-        private void DownloadModules(IEnumerable<CkanModule> mods, NetAsyncModulesDownloader downloader)
+        private void DownloadModules(IEnumerable<CkanModule> mods, IDownloader downloader)
         {
             List<CkanModule> downloads = mods.Where(module => !ksp.Cache.IsCachedZip(module.download)).ToList();
 

Core/Net/AutoUpdate.cs

@@ -193,7 +193,7 @@ internal Tuple<Uri, long> RetrieveUrl(dynamic response, int whichOne)
         internal dynamic MakeRequest(Uri url)
         {
             var web = new WebClient();
-            web.Headers.Add("user-agent", Net.UserAgentString);
+            web.Headers.Add("User-Agent", Net.UserAgentString);
 
             try
             {

Core/Net/NetAsyncDownloader.cs

@@ -39,7 +39,7 @@ public NetAsyncDownloaderDownloadPart(Uri url, long expectedSize, string path =
                 size = expectedSize;
                 lastProgressUpdateTime = DateTime.Now;
 
-                agent.Headers.Add("user-agent", Net.UserAgentString);
+                agent.Headers.Add("User-Agent", Net.UserAgentString);
             }
         }
 

GUI/Main.cs

@@ -8,6 +8,7 @@
 using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;
+using CKAN.Versioning;
 using CKAN.Exporters;
 using CKAN.Properties;
 using CKAN.Types;
@@ -1142,7 +1143,7 @@ private void ModList_MouseDown(object sender, MouseEventArgs e)
 
         private void reinstallToolStripMenuItem_Click(object sender, EventArgs e)
         {
-            var module = ModInfoTabControl.SelectedModule;
+            GUIMod module = ModInfoTabControl.SelectedModule;
             if (module == null || !module.IsCKAN)
                 return;
 
@@ -1151,21 +1152,33 @@ private void reinstallToolStripMenuItem_Click(object sender, EventArgs e)
             if (reinstallDialog.ShowYesNoDialog(confirmationText) == DialogResult.No)
                 return;
 
-            ModuleInstaller installer = ModuleInstaller.GetInstance(CurrentInstance, currentUser);
-            var resolvedMod = installer.ResolveModules(toInstall, new RelationshipResolverOptions());
+            IRegistryQuerier   registry = RegistryManager.Instance(CurrentInstance).registry;
+            KspVersionCriteria versCrit = CurrentInstance.VersionCriteria();
 
-            using (var transaction = CkanTransaction.CreateTransactionScope())
+            // Build the list of changes, first the mod to remove:
+            List<ModChange> toReinstall = new List<ModChange>()
             {
-                SetDescription($"Uninstalling {module.Name}");
-                if (!WasSuccessful(() => installer.UninstallList(module.Identifier)))
-                    return;
-
-                SetDescription($"Installing {module.Name}");
-                if (!WasSuccessful(() => installer.InstallList(resolvedMod, new RelationshipResolverOptions())))
-                    return;
-
-                transaction.Complete();
+                new ModChange(module, GUIModChangeType.Remove, null)
+            };
+            // Then everything we need to re-install:
+            HashSet<string> goners = registry.FindReverseDependencies(
+                new List<string>() { module.Identifier }
+            );
+            foreach (string id in goners)
+            {
+                toReinstall.Add(new ModChange(
+                    mainModList.full_list_of_mod_rows[id]?.Tag as GUIMod,
+                    GUIModChangeType.Install,
+                    null
+                ));
             }
+            // Hand off to centralized [un]installer code
+            installWorker.RunWorkerAsync(
+                new KeyValuePair<List<ModChange>, RelationshipResolverOptions>(
+                    toReinstall,
+                    RelationshipResolver.DefaultOpts()
+                )
+            );
         }
 
         private void downloadContentsToolStripMenuItem_Click(object sender, EventArgs e)