/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Creator Enterprise Auto Test Add-on.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/

#include "autotestconstants.h"
#include "testcodeparser.h"
#include "testrunner.h"
#include "testtreeitem.h"
#include "testtreemodel.h"
#include "testtreeview.h"

#include <coreplugin/icore.h>

#include <coreplugin/find/itemviewfind.h>

#include <cpptools/cppmodelmanager.h>

#include <projectexplorer/project.h>
#include <projectexplorer/session.h>

#include <texteditor/texteditor.h>

#include <QToolButton>
#include <QVBoxLayout>

namespace Autotest {
namespace Internal {

TestTreeViewWidget::TestTreeViewWidget(QWidget *parent) :
    QWidget(parent)
{
    setWindowTitle(tr("Tests"));
    m_model = TestTreeModel::instance();
    m_view = new TestTreeView(this);
    m_view->setModel(m_model);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->setMargin(0);
    layout->setSpacing(0);
    layout->addWidget(Core::ItemViewFind::createSearchableWrapper(m_view));
    setLayout(layout);

    TestCodeParser *parser = m_model->parser();
    ProjectExplorer::SessionManager *sm = ProjectExplorer::SessionManager::instance();
    connect(sm, &ProjectExplorer::SessionManager::startupProjectChanged,
            parser, &TestCodeParser::updateTestTree);

    CppTools::CppModelManager *cppMM = CppTools::CppModelManager::instance();
    connect(cppMM, &CppTools::CppModelManager::documentUpdated,
            parser, &TestCodeParser::onDocumentUpdated, Qt::QueuedConnection);

    connect(cppMM, &CppTools::CppModelManager::aboutToRemoveFiles,
            parser, &TestCodeParser::removeFiles, Qt::QueuedConnection);

    connect(m_view, &TestTreeView::activated, this, &TestTreeViewWidget::onItemActivated);
}

void TestTreeViewWidget::contextMenuEvent(QContextMenuEvent *event)
{
    bool enabled = !TestRunner::instance()->isTestRunning();
    bool hasTests = m_model->hasTests();
    QMenu menu;
    QAction *runAll = new QAction(tr("Run All Tests"), &menu);
    QAction *runSelected = new QAction(tr("Run Selected Tests"), &menu);
    QAction *selectAll = new QAction(tr("Select All"), &menu);
    QAction *deselectAll = new QAction(tr("Deselect All"), &menu);
    // TODO remove?
    QAction *rescan = new QAction(tr("Rescan"), &menu);

    connect(runAll, &QAction::triggered, this, &TestTreeViewWidget::onRunAllTriggered);
    connect(runSelected, &QAction::triggered, this, &TestTreeViewWidget::onRunSelectedTriggered);
    connect(selectAll, &QAction::triggered, m_view, &TestTreeView::selectAll);
    connect(deselectAll, &QAction::triggered, m_view, &TestTreeView::deselectAll);
    connect(rescan, &QAction::triggered,
            TestTreeModel::instance()->parser(), &TestCodeParser::updateTestTree);

    runAll->setEnabled(enabled && hasTests);
    runSelected->setEnabled(enabled && hasTests);
    selectAll->setEnabled(enabled && hasTests);
    deselectAll->setEnabled(enabled && hasTests);
    rescan->setEnabled(enabled);

    menu.addAction(runAll);
    menu.addAction(runSelected);
    menu.addSeparator();
    menu.addAction(selectAll);
    menu.addAction(deselectAll);
    menu.addSeparator();
    menu.addAction(rescan);

    menu.exec(mapToGlobal(event->pos()));
}

QList<QToolButton *> TestTreeViewWidget::createToolButtons()
{
    QList<QToolButton *> list;

    m_sortAlphabetically = true;
    m_sort = new QToolButton(this);
    m_sort->setIcon((QIcon(QLatin1String(":/images/leafsort.png"))));
    m_sort->setToolTip(tr("Sort Naturally (not implemented yet)"));

    QToolButton *expand = new QToolButton(this);
    expand->setIcon(QIcon(QLatin1String(":/images/expand.png")));
    expand->setToolTip(tr("Expand All"));

    QToolButton *collapse = new QToolButton(this);
    collapse->setIcon(QIcon(QLatin1String(":/images/collapse.png")));
    collapse->setToolTip(tr("Collapse All"));

    connect(expand, &QToolButton::clicked, m_view, &TestTreeView::expandAll);
    connect(collapse, &QToolButton::clicked, m_view, &TestTreeView::collapseAll);
    connect(m_sort, &QToolButton::clicked, this, &TestTreeViewWidget::onSortClicked);

    list << m_sort << expand << collapse;
    return list;
}

void TestTreeViewWidget::onItemActivated(const QModelIndex &index)
{
    const TextEditor::TextEditorWidget::Link link
            = index.data(LinkRole).value<TextEditor::TextEditorWidget::Link>();
    if (link.hasValidTarget()) {
        Core::EditorManager::openEditorAt(link.targetFileName,
                                          link.targetLine,
                                          link.targetColumn);
    }
}

void TestTreeViewWidget::onRunAllTriggered()
{
    TestRunner *runner = TestRunner::instance();
    runner->setSelectedTests(m_model->getAllTestCases());
    runner->runTests();
}

void TestTreeViewWidget::onRunSelectedTriggered()
{
    TestRunner *runner = TestRunner::instance();
    runner->setSelectedTests(m_model->getSelectedTests());
    runner->runTests();
}

void TestTreeViewWidget::onSortClicked()
{
    if (m_sortAlphabetically) {
        m_sort->setIcon((QIcon(QLatin1String(":/images/sort.png"))));
        m_sort->setToolTip(tr("Sort Alphabetically"));
    } else {
        m_sort->setIcon((QIcon(QLatin1String(":/images/leafsort.png"))));
        m_sort->setToolTip(tr("Sort Naturally (not implemented yet)"));
    }
    // TODO trigger the sorting change..
    m_sortAlphabetically = !m_sortAlphabetically;
}

TestViewFactory::TestViewFactory()
{
    setDisplayName(tr("Tests"));
    setId(Autotest::Constants::AUTOTEST_ID);
    setPriority(666);
}

Core::NavigationView TestViewFactory::createWidget()
{
    TestTreeViewWidget *treeViewWidget = new TestTreeViewWidget;
    Core::NavigationView view;
    view.widget = treeViewWidget;
    view.dockToolBarWidgets = treeViewWidget->createToolButtons();
    return view;
}

TestTreeView::TestTreeView(QWidget *parent)
    : NavigationTreeView(parent),
      m_context(new Core::IContext(this))
{
    setExpandsOnDoubleClick(false);
    m_context->setWidget(this);
    m_context->setContext(Core::Context(Constants::AUTOTEST_CONTEXT));
    Core::ICore::addContextObject(m_context);
}

void TestTreeView::selectAll()
{
    selectOrDeselectAll(Qt::Checked);
}

void TestTreeView::deselectAll()
{
    selectOrDeselectAll(Qt::Unchecked);
}

// this avoids the re-evaluation of parent nodes when modifying the child nodes (setData())
void TestTreeView::selectOrDeselectAll(const Qt::CheckState checkState)
{
    TestTreeModel *model = TestTreeModel::instance();
    QModelIndex autoTestsIndex = model->index(0, 0, rootIndex());
    if (!autoTestsIndex.isValid())
        return;
    int count = model->rowCount(autoTestsIndex);
    QModelIndex last;
    for (int i = 0; i < count; ++i) {
        QModelIndex classesIndex = model->index(i, 0, autoTestsIndex);
        int funcCount = model->rowCount(classesIndex);
        TestTreeItem *item = static_cast<TestTreeItem *>(classesIndex.internalPointer());
        if (item) {
            item->setChecked(checkState);
            if (!item->childCount())
                last = classesIndex;
        }
        for (int j = 0; j < funcCount; ++j) {
            last = model->index(j, 0, classesIndex);
            TestTreeItem *item = static_cast<TestTreeItem *>(last.internalPointer());
            if (item)
                item->setChecked(checkState);
        }
    }
    emit dataChanged(autoTestsIndex, last);
}

} // namespace Internal
} // namespace Autotest