#include "NavigationController.h"

#include <QDir>
#include <QDebug>

#include "../models/NavigationItemModel.h"
#include "../models/NavigationListModel.h"

///@todo impelement reaction to item's clicked signal; implement back navigation
NavigationController::NavigationController(QObject *parent) : QObject(parent),
    mRootItem(new NavigationItemModel(this)),
    mNavList(new NavigationListModel(this))
{

}

void NavigationController::init(const QString &rootPath)
{
    auto rootDir = QDir(rootPath);
    if(!rootDir.exists()) return;
    mRootPath = rootPath;

    add(mRootPath, mRootItem, true);

    mNavList->setModelItems(mRootItem->getChildren());
}

void NavigationController::setContext(QQmlContext *context)
{
    mContext = context;
    setContextProperties();
}

void NavigationController::setContextProperties()
{
    mContext->setContextProperty("navigationList", mNavList);
}

void NavigationController::add(const QString &path, NavigationItemModel *parentItem, bool isCircleDelegate)
{
    auto dir = QDir(path);
    if(!dir.exists()) return;

    auto subDirsNames = dir.entryList(QDir::AllDirs);

    for(const auto& name : subDirsNames){
        if(name == "." || name == "..") continue;
        auto item = new NavigationItemModel(parentItem);
        if(!item->setPath(path + "/" + name)) {
            item->deleteLater();
            continue;
        }
        item->setCircleDelegate(isCircleDelegate);
        connect(item, &NavigationItemModel::clicked, this, &NavigationController::onNavigationRequest);
        parentItem->appendChild(item);
        add(item->getPath(), item, false);
    }
}

void NavigationController::onNavigationRequest()
{
    auto item = qobject_cast<NavigationItemModel*>(QObject::sender());
    if(!item) return;

    if(item->hasChildren())
        mNavList->setModelItems(item->getChildren());
}