Show python errors in Project Manager for adding repos and downloading gems

Signed-off-by: AMZN-Phil <pconroy@amazon.com>

Code/Tools/ProjectManager/Source/DownloadWorker.cpp

@@ -33,7 +33,7 @@ namespace O3DE::ProjectManager
         }
         else
         {
-            emit Done(tr("Gem download failed"));
+            emit Done(gemInfoResult.GetError().c_str());
         }
     }
 

Code/Tools/ProjectManager/Source/GemRepo/GemRepoScreen.cpp

@@ -92,8 +92,8 @@ namespace O3DE::ProjectManager
                 return;
             }
 
-            bool addGemRepoResult = PythonBindingsInterface::Get()->AddGemRepo(repoUri);
-            if (addGemRepoResult)
+            AZ::Outcome<void, AZStd::string> addGemRepoResult = PythonBindingsInterface::Get()->AddGemRepo(repoUri);
+            if (addGemRepoResult.IsSuccess())
             {
                 Reinit();
                 emit OnRefresh();
@@ -101,8 +101,8 @@ namespace O3DE::ProjectManager
             else
             {
                 QString failureMessage = tr("Failed to add gem repo: %1.").arg(repoUri);
-                QMessageBox::critical(this, tr("Operation failed"), failureMessage);
-                AZ_Error("Project Manger", false, failureMessage.toUtf8());
+                QMessageBox::critical(this, failureMessage, addGemRepoResult.GetError().c_str());
+                AZ_Error("Project Manager", false, failureMessage.toUtf8());
             }
         }
     }

Code/Tools/ProjectManager/Source/PythonBindings.cpp

@@ -61,6 +61,7 @@ namespace Platform
 namespace RedirectOutput
 {
     using RedirectOutputFunc = AZStd::function<void(const char*)>;
+    AZStd::string lastPythonError;
 
     struct RedirectOutput
     {
@@ -210,6 +211,16 @@ namespace RedirectOutput
         });
 
         SetRedirection("stderr", g_redirect_stderr_saved, g_redirect_stderr, []([[maybe_unused]] const char* msg) {
+            if (lastPythonError.empty())
+            {
+                lastPythonError = msg;
+                const int lengthOfErrorPrefix = 11;
+                auto errorPrefix = lastPythonError.find("ERROR:root:");
+                if (errorPrefix != AZStd::string::npos)
+                {
+                    lastPythonError.erase(errorPrefix, lengthOfErrorPrefix);
+                }
+            }
             AZ_TracePrintf("Python", msg);
         });
 
@@ -1051,12 +1062,13 @@ namespace O3DE::ProjectManager
         return result && refreshResult;
     }
 
-    bool PythonBindings::AddGemRepo(const QString& repoUri)
+    AZ::Outcome<void, AZStd::string> PythonBindings::AddGemRepo(const QString& repoUri)
     {
         bool registrationResult = false;
         bool result = ExecuteWithLock(
             [&]
             {
+                RedirectOutput::lastPythonError.clear();
                 auto pyUri = QString_To_Py_String(repoUri);
                 auto pythonRegistrationResult = m_register.attr("register")(
                     pybind11::none(), pybind11::none(), pybind11::none(), pybind11::none(), pybind11::none(), pybind11::none(), pyUri);
@@ -1065,7 +1077,12 @@ namespace O3DE::ProjectManager
                 registrationResult = !pythonRegistrationResult.cast<bool>();
             });
 
-        return result && registrationResult;
+        if (!result || !registrationResult)
+        {
+            return AZ::Failure<AZStd::string>(AZStd::move(RedirectOutput::lastPythonError));
+        }
+
+        return AZ::Success();
     }
 
     bool PythonBindings::RemoveGemRepo(const QString& repoUri)
@@ -1225,6 +1242,7 @@ namespace O3DE::ProjectManager
         auto result = ExecuteWithLockErrorHandling(
             [&]
             {
+                RedirectOutput::lastPythonError.clear();
                 auto downloadResult = m_download.attr("download_gem")(
                     QString_To_Py_String(gemName), // gem name
                     pybind11::none(), // destination path
@@ -1248,7 +1266,7 @@ namespace O3DE::ProjectManager
         }
         else if (!downloadSucceeded)
         {
-            return AZ::Failure<AZStd::string>("Failed to download gem.");
+            return AZ::Failure<AZStd::string>(AZStd::move(RedirectOutput::lastPythonError));
         }
 
         return AZ::Success();

Code/Tools/ProjectManager/Source/PythonBindings.h

@@ -62,7 +62,7 @@ namespace O3DE::ProjectManager
         // Gem Repos
         AZ::Outcome<void, AZStd::string> RefreshGemRepo(const QString& repoUri) override;
         bool RefreshAllGemRepos() override;
-        bool AddGemRepo(const QString& repoUri) override;
+        AZ::Outcome<void, AZStd::string> AddGemRepo(const QString& repoUri) override;
         bool RemoveGemRepo(const QString& repoUri) override;
         AZ::Outcome<QVector<GemRepoInfo>, AZStd::string> GetAllGemRepoInfos() override;
         AZ::Outcome<QVector<GemInfo>, AZStd::string> GetAllGemRepoGemsInfos() override;

Code/Tools/ProjectManager/Source/PythonBindingsInterface.h

@@ -200,9 +200,9 @@ namespace O3DE::ProjectManager
         /**
          * Registers this gem repo with the current engine.
          * @param repoUri the absolute filesystem path or url to the gem repo.
-         * @return true on success, false on failure.
+         * @return an outcome with a string error message on failure.
          */
-        virtual bool AddGemRepo(const QString& repoUri) = 0;
+        virtual AZ::Outcome<void, AZStd::string> AddGemRepo(const QString& repoUri) = 0;
 
         /**
          * Unregisters this gem repo with the current engine.