/*
 * Copyright (C) 2022 The V-Gears Team
 *
 * This file is part of V-Gears
 *
 * V-Gears is free software: you can redistribute it and/or modify it under
 * terms of the GNU General Public License as published by the Free Software
 * Foundation, version 3.0 (GPLv3) of the License.
 *
 * V-Gears is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#pragma once

#include <OgreColourValue.h>
#include "common/QGearsResource.h"

namespace QGears{

    namespace FF7{

        /**
         * Handles model list files.
         */
        class ModelListFile : public Resource{

            public:

                /**
                 * Constructor.
                 *
                 * @param creator[in] Pointer to the ResourceManager that is
                 * creating this resource.
                 * @param name[in] The unique name of the resource.
                 * @param handle[in] @todo Understand and document.
                 * @param group[in] The name of the resource group to which this
                 * resource belong.
                 * @param is_manual[in] True if the resource is manually loaded,
                 * false otherwise.
                 * @param loader[in] Pointer to a ManualResourceLoader
                 * implementation which will be called when the Resource wishes to
                 * load (should be supplied if is_manual is set to true). It can be
                 * null, but the Resource will never be able to reload if anything
                 * ever causes it to unload. Therefore provision of a proper
                 * ManualResourceLoader instance is strongly recommended.
                 */
                ModelListFile(
                  Ogre::ResourceManager* creator, const String &name,
                  Ogre::ResourceHandle handle, const String& group,
                  bool is_manual = false,
                  Ogre::ManualResourceLoader* loader = NULL
                );

                /**
                * Destructor.
                */
                virtual ~ModelListFile();

                /**
                 * The type of resource.
                 */
                static const String RESOURCE_TYPE;

                /**
                 * An animation description.
                 */
                struct AnimationDescription{

                    /**
                     * The animation name.
                     */
                    String  name;

                    /**
                     * Unknown data.
                     */
                    uint16  unknown;
                };

                typedef std::vector<AnimationDescription> AnimationList;

                /**
                 * Types of models.
                 */
                enum ModelType{

                    /**
                     * Playable character.
                     */
                    PLAYER = 0,

                    /**
                     * Non playable character.
                     */
                    NPC = 1,

                    /**
                     * Unknown character type
                     */
                    UNKNOWN
                };

                /**
                 * A model.
                 */
                struct ModelDescription{

                    /**
                     * The model name.
                     */
                    String name;

                    /**
                     * The model type.
                     */
                    ModelType type;

                    /**
                     * HRC file name.
                     *
                     * HRC files describe bone hierarchy.
                     */
                    String hrc_name;

                    /**
                     * Scale for the model.
                     */
                    String scale;


                    Ogre::ColourValue   light_colors[10];

                    /**
                     * List of animations assigned to the model.
                     */
                    AnimationList animations;
                };

                typedef std::vector<ModelDescription>   ModelList;

                /**
                 * Retrieves the scale for the models.
                 *
                 * @return The scale.
                 */
                virtual uint16 GetScale() const;

                /**
                 * Sets the scale for the models.
                 *
                 * @param scale[in] The scale.
                 */
                virtual void SetScale(uint16 scale);

                /**
                 * Retrieves the model list.
                 */
                virtual ModelList& GetModels();

            protected:


                /**
                 * Loads the file.
                 */
                virtual void loadImpl() override;

                /**
                 * Unloads the file.
                 */
                virtual void unloadImpl() override;

                /**
                 * Calculates the size of the palette.
                 *
                 * @return The size of the palette.
                 * @todo Units?
                 */
                virtual size_t calculateSize( void ) const;

            private:

                /**
                 * The models scale.
                 *
                 * @todo Each model has it's own scale. Is this some kind of
                 * global scale? If so, is it to be applied over each model
                 * scale, or instead of it?
                 */
                uint16 scale_;

                /**
                 * The list of models.
                 */
                ModelList models_;
        };

        typedef Ogre::SharedPtr<ModelListFile> ModelListFilePtr;
    }
}