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/* Copyright 2015-2018 MultiMC Contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <QAbstractListModel>
#include <memory>

#include "BaseEntity.h"

#include "multimc_logic_export.h"

class Task;

namespace Meta
{
using VersionListPtr = std::shared_ptr<class VersionList>;
using VersionPtr = std::shared_ptr<class Version>;

class MULTIMC_LOGIC_EXPORT Index : public QAbstractListModel, public BaseEntity
{
    Q_OBJECT
public:
    explicit Index(QObject *parent = nullptr);
    explicit Index(const QVector<VersionListPtr> &lists, QObject *parent = nullptr);

    enum
    {
        UidRole = Qt::UserRole,
        NameRole,
        ListPtrRole
    };

    QVariant data(const QModelIndex &index, int role) const override;
    int rowCount(const QModelIndex &parent) const override;
    int columnCount(const QModelIndex &parent) const override;
    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;

    QString localFilename() const override { return "index.json"; }

    // queries
    VersionListPtr get(const QString &uid);
    VersionPtr get(const QString &uid, const QString &version);
    bool hasUid(const QString &uid) const;

    QVector<VersionListPtr> lists() const { return m_lists; }

public: // for usage by parsers only
    void merge(const std::shared_ptr<Index> &other);
    void parse(const QJsonObject &obj) override;

private:
    QVector<VersionListPtr> m_lists;
    QHash<QString, VersionListPtr> m_uids;

    void connectVersionList(const int row, const VersionListPtr &list);
};
}