Better error message when package installation failed

Work Item: 17194

--HG--
branch : 1.x

src/Orchard.Web/Modules/Orchard.Packaging/Controllers/GalleryController.cs

@@ -80,7 +80,8 @@ namespace Orchard.Packaging.Controllers {
                     if (!url.StartsWith("http")) {
                         ModelState.AddModelError("Url", T("The Url is not valid").Text);
                     }
-                } else if (String.IsNullOrWhiteSpace(url)) {
+                }
+                else if (String.IsNullOrWhiteSpace(url)) {
                     ModelState.AddModelError("Url", T("Url is required").Text);
                 }
 
@@ -97,7 +98,8 @@ namespace Orchard.Packaging.Controllers {
                     if (String.IsNullOrWhiteSpace(title)) {
                         ModelState.AddModelError("Url", T("The feed has no title.").Text);
                     }
-                } catch {
+                }
+                catch {
                     ModelState.AddModelError("Url", T("The url of the feed or its content is not valid.").Text);
                 }
 
@@ -108,7 +110,8 @@ namespace Orchard.Packaging.Controllers {
                 _notifier.Information(T("The feed has been added successfully."));
 
                 return RedirectToAction("Sources");
-            } catch (Exception exception) {
+            }
+            catch (Exception exception) {
                 _notifier.Error(T("Adding feed failed: {0}", exception.Message));
                 return View(new PackagingAddSourceViewModel { Url = url });
             }
@@ -138,7 +141,8 @@ namespace Orchard.Packaging.Controllers {
                 try {
                     var sourceExtensions = getList(source);
                     extensions = extensions == null ? sourceExtensions : extensions.Concat(sourceExtensions);
-                } catch (Exception ex) {
+                }
+                catch (Exception ex) {
                     Logger.Error(ex, "Error loading extensions from gallery source '{0}'. {1}.", source.FeedTitle, ex.Message);
                     _notifier.Error(T("Error loading extensions from gallery source '{0}'. {1}.", source.FeedTitle, ex.Message));
                 }
@@ -161,7 +165,15 @@ namespace Orchard.Packaging.Controllers {
                 return HttpNotFound();
             }
 
+            try {
                 _packageManager.Install(packageId, version, source.FeedUrl, HostingEnvironment.MapPath("~/"));
+            }
+            catch (Exception exception) {
+                _notifier.Error(T("Package installation failed."));
+                for (Exception scan = exception; scan != null; scan = scan.InnerException) {
+                    _notifier.Error(T("{0}", scan.Message));
+                }
+            }
 
             return RedirectToAction(redirectTo == "Themes" ? "Themes" : "Modules");
         }

src/Orchard.Web/Modules/Orchard.Packaging/Controllers/PackagingServicesController.cs

@@ -98,16 +98,15 @@ namespace Orchard.Packaging.Controllers {
                         file.SaveAs(fullFileName);
                         PackageInfo info = _packageManager.Install(new ZipPackage(fullFileName), _appDataFolderRoot.RootFolder, HostingEnvironment.MapPath("~/"));
                         System.IO.File.Delete(fullFileName);
-
-                        _notifier.Information(T("Installed package \"{0}\", version {1} of type \"{2}\" at location \"{3}\"",
-                            info.ExtensionName, info.ExtensionVersion, info.ExtensionType, info.ExtensionPath));
                     }
                 }
 
                 return this.RedirectLocal(returnUrl, "~/");
-            } catch (Exception exception) {
+            }
+            catch (Exception exception) {
+                _notifier.Error(T("Package uploading and installation failed."));
                 for (Exception scan = exception; scan != null; scan = scan.InnerException) {
-                    _notifier.Error(T("Uploading module package failed: {0}", exception.Message));
+                    _notifier.Error(T("{0}", scan.Message));
                 }
 
                 return Redirect(retryUrl);
@@ -124,7 +123,8 @@ namespace Orchard.Packaging.Controllers {
                 _notifier.Information(T("Uninstalled package \"{0}\"", id));
 
                 return this.RedirectLocal(returnUrl, "~/");
-            } catch (Exception exception) {
+            }
+            catch (Exception exception) {
                 for (Exception scan = exception; scan != null; scan = scan.InnerException) {
                     _notifier.Error(T("Uninstall failed: {0}", exception.Message));
                 }

src/Orchard.Web/Modules/Orchard.Packaging/Services/PackageManager.cs

@@ -1,7 +1,11 @@
+using System;
 using System.Linq;
+using System.Web.Hosting;
 using NuGet;
 using Orchard.Environment.Extensions;
 using Orchard.Environment.Extensions.Models;
+using Orchard.Localization;
+using Orchard.UI.Notify;
 
 namespace Orchard.Packaging.Services {
     [OrchardFeature("PackagingServices")]
@@ -9,14 +13,35 @@ namespace Orchard.Packaging.Services {
         private readonly IExtensionManager _extensionManager;
         private readonly IPackageBuilder _packageBuilder;
         private readonly IPackageInstaller _packageExpander;
+        private readonly INotifier _notifier;
 
         public PackageManager(
             IExtensionManager extensionManager,
             IPackageBuilder packageBuilder,
-            IPackageInstaller packageExpander) {
+            IPackageInstaller packageExpander,
+            INotifier notifier) {
             _extensionManager = extensionManager;
             _packageBuilder = packageBuilder;
             _packageExpander = packageExpander;
+            _notifier = notifier;
+
+            T = NullLocalizer.Instance;
+        }
+
+        public Localizer T { get; set; }
+
+        private PackageInfo DoInstall(Func<PackageInfo> installer) {
+            try {
+                return installer();
+            }
+            catch (Exception exception) {
+                var message = T(
+                    "There was an error installing the requested package. " +
+                    "This can happen if the server does not have write access to the '~/Modules' or '~/Themes' folder of the web site. " +
+                    "If the site is running in shared hosted environement, adding write access to these folders sometimes needs to be done manually through the Hoster control panel. " +
+                    "Once Themes and Modules have been installed, it is recommended to remove write access to these folders.");
+                throw new OrchardException(message, exception);
+            }
         }
 
         #region IPackageManager Members
@@ -34,13 +59,12 @@ namespace Orchard.Packaging.Services {
             };
         }
 
-        public PackageInfo Install(IPackage package, string location, string applicationPath)
-        {
-            return _packageExpander.Install(package, location, applicationPath);
+        public PackageInfo Install(IPackage package, string location, string applicationPath) {
+            return DoInstall(() => _packageExpander.Install(package, location, applicationPath));
         }
 
         public PackageInfo Install(string packageId, string version, string location, string applicationPath) {
-            return _packageExpander.Install(packageId, version, location, applicationPath);
+            return DoInstall(() => _packageExpander.Install(packageId, version, location, applicationPath));
         }
 
         public void Uninstall(string packageId, string applicationPath) {