Copilot: Move closer to latest settings setup and usage pattern

Change-Id: I86983f55cd53a540e2fe1a5b307ebf67f7ea7a98
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/plugins/copilot/copilotsettings.cpp

@@ -2,13 +2,21 @@
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
 
 #include "copilotsettings.h"
+
+#include "authwidget.h"
 #include "copilotconstants.h"
 #include "copilottr.h"
 
+#include <coreplugin/dialogs/ioptionspage.h>
+
 #include <projectexplorer/project.h>
 
 #include <utils/algorithm.h>
 #include <utils/environment.h>
+#include <utils/layoutbuilder.h>
+#include <utils/pathchooser.h>
+
+#include <QToolTip>
 
 using namespace Utils;
 
@@ -23,7 +31,7 @@ static void initEnableAspect(BoolAspect &enableCopilot)
     enableCopilot.setDefaultValue(false);
 }
 
-CopilotSettings &CopilotSettings::instance()
+CopilotSettings &settings()
 {
     static CopilotSettings settings;
     return settings;
@@ -79,6 +87,8 @@ CopilotSettings::CopilotSettings()
                                    "position after changes to the document."));
 
     initEnableAspect(enableCopilot);
+
+    readSettings();
 }
 
 CopilotProjectSettings::CopilotProjectSettings(ProjectExplorer::Project *project, QObject *parent)
@@ -106,7 +116,7 @@ void CopilotProjectSettings::setUseGlobalSettings(bool useGlobal)
 bool CopilotProjectSettings::isEnabled() const
 {
     if (useGlobalSettings())
-        return CopilotSettings::instance().enableCopilot();
+        return settings().enableCopilot();
     return enableCopilot();
 }
 
@@ -117,7 +127,105 @@ void CopilotProjectSettings::save(ProjectExplorer::Project *project)
     project->setNamedSettings(Constants::COPILOT_PROJECT_SETTINGS_ID, map);
 
     // This triggers a restart of the Copilot language server.
-    CopilotSettings::instance().apply();
+    settings().apply();
 }
 
-} // namespace Copilot
+// CopilotOptionsPageWidget
+
+class CopilotOptionsPageWidget : public Core::IOptionsPageWidget
+{
+public:
+    CopilotOptionsPageWidget()
+    {
+        using namespace Layouting;
+
+        auto warningLabel = new QLabel;
+        warningLabel->setWordWrap(true);
+        warningLabel->setTextInteractionFlags(Qt::LinksAccessibleByMouse
+                                              | Qt::LinksAccessibleByKeyboard
+                                              | Qt::TextSelectableByMouse);
+        warningLabel->setText(Tr::tr(
+            "Enabling %1 is subject to your agreement and abidance with your applicable "
+            "%1 terms. It is your responsibility to know and accept the requirements and "
+            "parameters of using tools like %1. This may include, but is not limited to, "
+            "ensuring you have the rights to allow %1 access to your code, as well as "
+            "understanding any implications of your use of %1 and suggestions produced "
+            "(like copyright, accuracy, etc.)." ).arg("Copilot"));
+
+        auto authWidget = new AuthWidget();
+
+        auto helpLabel = new QLabel();
+        helpLabel->setTextFormat(Qt::MarkdownText);
+        helpLabel->setWordWrap(true);
+        helpLabel->setTextInteractionFlags(Qt::LinksAccessibleByMouse
+                                           | Qt::LinksAccessibleByKeyboard
+                                           | Qt::TextSelectableByMouse);
+        helpLabel->setOpenExternalLinks(true);
+        connect(helpLabel, &QLabel::linkHovered, [](const QString &link) {
+            QToolTip::showText(QCursor::pos(), link);
+        });
+
+        // clang-format off
+        helpLabel->setText(Tr::tr(
+            "The Copilot plugin requires node.js and the Copilot neovim plugin. "
+            "If you install the neovim plugin as described in %1, "
+            "the plugin will find the agent.js file automatically.\n\n"
+            "Otherwise you need to specify the path to the %2 "
+            "file from the Copilot neovim plugin.",
+            "Markdown text for the copilot instruction label")
+                           .arg("[README.md](https://github.com/github/copilot.vim)")
+                           .arg("[agent.js](https://github.com/github/copilot.vim/tree/release/copilot/dist)"));
+
+        Column {
+            QString("<b>" + Tr::tr("Note:") + "</b>"), br,
+            warningLabel, br,
+            settings().enableCopilot, br,
+            authWidget, br,
+            settings().nodeJsPath, br,
+            settings().distPath, br,
+            settings().autoComplete, br,
+            helpLabel, br,
+            st
+        }.attachTo(this);
+        // clang-format on
+
+        auto updateAuthWidget = [authWidget]() {
+            authWidget->updateClient(
+                FilePath::fromUserInput(settings().nodeJsPath.volatileValue()),
+                FilePath::fromUserInput(settings().distPath.volatileValue()));
+        };
+
+        connect(settings().nodeJsPath.pathChooser(),
+                &PathChooser::textChanged,
+                authWidget,
+                updateAuthWidget);
+        connect(settings().distPath.pathChooser(),
+                &PathChooser::textChanged,
+                authWidget,
+                updateAuthWidget);
+        updateAuthWidget();
+
+        setOnApply([] {
+            settings().apply();
+            settings().writeSettings();
+        });
+    }
+};
+
+class CopilotSettingsPage : public Core::IOptionsPage
+{
+public:
+    CopilotSettingsPage()
+    {
+        setId(Constants::COPILOT_GENERAL_OPTIONS_ID);
+        setDisplayName("Copilot");
+        setCategory(Constants::COPILOT_GENERAL_OPTIONS_CATEGORY);
+        setDisplayCategory(Constants::COPILOT_GENERAL_OPTIONS_DISPLAY_CATEGORY);
+        setCategoryIconPath(":/copilot/images/settingscategory_copilot.png");
+        setWidgetCreator([] { return new CopilotOptionsPageWidget; });
+    }
+};
+
+const CopilotSettingsPage settingsPage;
+
+} // Copilot