#include "foldercontentcontroller_v2.h"

#include <QUrl>

#include "db_helper.h"
#include "comic_db.h"
#include "folder.h"

#include "yacreader_server_data_helper.h"

#include "qnaturalsorting.h"

#include "QsLog.h"

#include <chrono>
#include <ctime>
using namespace std;

struct LibraryItemSorter {
    bool operator()(const LibraryItem *a, const LibraryItem *b) const
    {
        return naturalSortLessThanCI(a->name, b->name);
    }
};

FolderContentControllerV2::FolderContentControllerV2() { }

void FolderContentControllerV2::service(HttpRequest &request, HttpResponse &response)
{
    response.setHeader("Content-Type", "application/json");

    QString path = QUrl::fromPercentEncoding(request.getPath()).toUtf8();
    QStringList pathElements = path.split('/');
    int libraryId = pathElements.at(3).toInt();
    qulonglong parentId = pathElements.at(5).toULongLong();

    serviceContent(libraryId, parentId, response);

    response.setStatus(200, "OK");
    response.write("", true);
}

void FolderContentControllerV2::serviceContent(const int &library, const qulonglong &folderId, HttpResponse &response)
{
#ifdef QT_DEBUG
    auto started = std::chrono::high_resolution_clock::now();
#endif
    QList<LibraryItem *> folderContent = DBHelper::getFolderSubfoldersFromLibrary(library, folderId);
    QList<LibraryItem *> folderComics = DBHelper::getFolderComicsFromLibrary(library, folderId);

    folderContent.append(folderComics);
    qSort(folderContent.begin(), folderContent.end(), LibraryItemSorter());

    folderComics.clear();

    QJsonArray items;

    ComicDB *currentComic;
    Folder *currentFolder;
    for (QList<LibraryItem *>::const_iterator itr = folderContent.constBegin(); itr != folderContent.constEnd(); itr++) {
        if ((*itr)->isDir()) {
            currentFolder = (Folder *)(*itr);
            items.append(YACReaderServerDataHelper::folderToJSON(library, *currentFolder));
        } else {
            currentComic = (ComicDB *)(*itr);
            items.append(YACReaderServerDataHelper::comicToJSON(library, *currentComic));
        }
    }

    QJsonDocument output(items);

    response.write(output.toJson(QJsonDocument::Compact));
#ifdef QT_DEBUG
    auto done = std::chrono::high_resolution_clock::now();

    QLOG_TRACE() << "num items = " << items.count();
    QLOG_TRACE() << std::chrono::duration_cast<std::chrono::milliseconds>(done - started).count();
#endif
}