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#include "clangformatindenter.h"
#include "clangformatsettings.h"
#include "clangformatutils.h"

#include <texteditor/tabsettings.h>
#include <texteditor/textdocumentlayout.h>

using namespace clang;
using namespace format;
using namespace TextEditor;

namespace ClangFormat {

ClangFormatIndenter::ClangFormatIndenter(QTextDocument *doc)
    : ClangFormatBaseIndenter(doc)
{}

FormatStyle ClangFormatIndenter::styleForFile() const
{
    return ClangFormat::styleForFile(m_fileName);
}

bool ClangFormatIndenter::formatCodeInsteadOfIndent() const
{
    return ClangFormatSettings::instance().formatCodeInsteadOfIndent();
}

bool ClangFormatIndenter::formatWhileTyping() const
{
    return ClangFormatSettings::instance().formatWhileTyping();
}

Utils::optional<TabSettings> ClangFormatIndenter::tabSettings() const
{
    FormatStyle style = styleForFile();
    TabSettings tabSettings;

    switch (style.UseTab) {
    case FormatStyle::UT_Never:
        tabSettings.m_tabPolicy = TabSettings::SpacesOnlyTabPolicy;
        break;
    case FormatStyle::UT_Always:
        tabSettings.m_tabPolicy = TabSettings::TabsOnlyTabPolicy;
        break;
    default:
        tabSettings.m_tabPolicy = TabSettings::MixedTabPolicy;
    }

    tabSettings.m_tabSize = static_cast<int>(style.TabWidth);
    tabSettings.m_indentSize = static_cast<int>(style.IndentWidth);

    if (style.AlignAfterOpenBracket == FormatStyle::BAS_DontAlign)
        tabSettings.m_continuationAlignBehavior = TabSettings::NoContinuationAlign;
    else
        tabSettings.m_continuationAlignBehavior = TabSettings::ContinuationAlignWithIndent;

    return tabSettings;
}

int ClangFormatIndenter::lastSaveRevision() const
{
    auto *layout = qobject_cast<TextEditor::TextDocumentLayout *>(m_doc->documentLayout());
    if (!layout)
        return 0;
    return layout->lastSaveRevision;
}

bool ClangFormatIndenter::formatOnSave() const
{
    return ClangFormatSettings::instance().formatOnSave();
}

} // namespace ClangFormat