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#include "cpphoverhandler.h"

#include "cppelementevaluator.h"
#include "cpptoolsreuse.h"

#include <coreplugin/helpmanager.h>
#include <texteditor/texteditor.h>

#include <utils/textutils.h>
#include <utils/executeondestruction.h>

#include <QTextCursor>
#include <QUrl>

using namespace Core;
using namespace TextEditor;

namespace CppTools {

void CppHoverHandler::identifyMatch(TextEditorWidget *editorWidget, int pos, ReportPriority report)
{
    Utils::ExecuteOnDestruction reportPriority([this, report](){ report(priority()); });

    QTextCursor tc(editorWidget->document());
    tc.setPosition(pos);

    CppElementEvaluator evaluator(editorWidget);
    evaluator.setTextCursor(tc);
    evaluator.execute();
    QString tip;
    if (evaluator.hasDiagnosis()) {
        tip += evaluator.diagnosis();
        setPriority(Priority_Diagnostic);
    }
    const QStringList fallback = identifierWordsUnderCursor(tc);
    if (evaluator.identifiedCppElement()) {
        const QSharedPointer<CppElement> &cppElement = evaluator.cppElement();
        const QStringList candidates = cppElement->helpIdCandidates;
        const HelpItem helpItem(candidates + fallback, cppElement->helpMark, cppElement->helpCategory);
        setLastHelpItemIdentified(helpItem); // tool tip appended by BaseHoverHandler::decorateToolTip
        if (!helpItem.isValid())
            tip += cppElement->tooltip;
    } else {
        setLastHelpItemIdentified({fallback, {}, HelpItem::Unknown});
    }
    setToolTip(tip);
}

} // namespace CppTools
