/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2011 SCHUTZ Sacha
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#pragma once

#include <QAbstractItemModel>
#include <QByteArray>
#include <QIODevice>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonValue>
class QJsonModel;
class QJsonItem;

class QJsonTreeItem
{
  public:
    QJsonTreeItem(QJsonTreeItem *parent = nullptr);
    ~QJsonTreeItem();
    void appendChild(QJsonTreeItem *item);
    QJsonTreeItem *child(int row);
    QJsonTreeItem *parent();
    int childCount() const;
    int row() const;
    void setKey(const QString &key);
    void setValue(const QString &value);
    void setType(const QJsonValue::Type &type);
    QString key() const;
    QString value() const;
    QJsonValue::Type type() const;

    static QJsonTreeItem *load(const QJsonValue &value, QJsonTreeItem *parent = 0);

  protected:
  private:
    QString mKey;
    QString mValue;
    QJsonValue::Type mType;
    QList<QJsonTreeItem *> mChilds;
    QJsonTreeItem *mParent;
};

//---------------------------------------------------

class QJsonModel : public QAbstractItemModel
{
    Q_OBJECT
  public:
    explicit QJsonModel(QObject *parent = nullptr);
    QJsonModel(const QString &fileName, QObject *parent = nullptr);
    QJsonModel(QIODevice *device, QObject *parent = nullptr);
    QJsonModel(const QByteArray &json, QObject *parent = nullptr);
    ~QJsonModel();
    bool load(const QString &fileName);
    bool load(QIODevice *device);
    bool loadJson(const QByteArray &json);
    QVariant data(const QModelIndex &index, int role) const Q_DECL_OVERRIDE;
    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) Q_DECL_OVERRIDE;
    QVariant headerData(int section, Qt::Orientation orientation, int role) const Q_DECL_OVERRIDE;
    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    QModelIndex parent(const QModelIndex &index) const Q_DECL_OVERRIDE;
    int rowCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    int columnCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    Qt::ItemFlags flags(const QModelIndex &index) const Q_DECL_OVERRIDE;
    QJsonDocument json() const;

  private:
    QJsonValue genJson(QJsonTreeItem *) const;

    QJsonTreeItem *mRootItem;
    QStringList mHeaders;
};