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/* Copyright 2015-2017 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;

	std::unique_ptr<Task> remoteUpdateTask() override;
	std::unique_ptr<Task> localUpdateTask() 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;
	/*
	VersionListPtr getList(const QString &uid) const;
	VersionListPtr getListGuaranteed(const QString &uid) const;
	*/

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

public: // for usage by parsers only
	void merge(const BaseEntity::Ptr &other) override;
	void parse(const QJsonObject &obj) override;

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

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