#ifndef ARE_INCLUDE_SCENE_MATERIAL_H
#define ARE_INCLUDE_SCENE_MATERIAL_H

#include "basic/types.h"
#include "resource/texture.h"
#include <memory>

namespace are {

/// @brief Material type enumeration
enum class MaterialType {
    DIFFUSE = 0,
    METAL = 1,
    DIELECTRIC = 2,
    EMISSIVE = 3
};

/// @brief Material properties
class Material {
public:
    /// @brief Constructor
    Material();
    
    /// @brief Destructor
    ~Material();
    
    /// @brief Set albedo color
    /// @param albedo Albedo color
    void set_albedo(const Vec3& albedo);
    
    /// @brief Set emission color
    /// @param emission Emission color
    void set_emission(const Vec3& emission);
    
    /// @brief Set metallic value
    /// @param metallic Metallic (0-1)
    void set_metallic(float metallic);
    
    /// @brief Set roughness value
    /// @param roughness Roughness (0-1)
    void set_roughness(float roughness);
    
    /// @brief Set index of refraction
    /// @param ior Index of refraction
    void set_ior(float ior);
    
    /// @brief Set material type
    /// @param type Material type
    void set_type(MaterialType type);
    
    /// @brief Set albedo texture
    /// @param texture Albedo texture
    void set_albedo_texture(std::shared_ptr<Texture> texture);
    
    /// @brief Set normal map
    /// @param texture Normal map texture
    void set_normal_texture(std::shared_ptr<Texture> texture);
    
    /// @brief Get albedo color
    /// @return Albedo color
    const Vec3& get_albedo() const { return albedo_; }
    
    /// @brief Get emission color
    /// @return Emission color
    const Vec3& get_emission() const { return emission_; }
    
    /// @brief Get metallic value
    /// @return Metallic
    float get_metallic() const { return metallic_; }
    
    /// @brief Get roughness value
    /// @return Roughness
    float get_roughness() const { return roughness_; }
    
    /// @brief Get index of refraction
    /// @return IOR
    float get_ior() const { return ior_; }
    
    /// @brief Get material type
    /// @return Material type
    MaterialType get_type() const { return type_; }
    
    /// @brief Get albedo texture
    /// @return Albedo texture (nullptr if none)
    std::shared_ptr<Texture> get_albedo_texture() const { return albedo_texture_; }
    
    /// @brief Get normal texture
    /// @return Normal texture (nullptr if none)
    std::shared_ptr<Texture> get_normal_texture() const { return normal_texture_; }

private:
    Vec3 albedo_;
    Vec3 emission_;
    float metallic_;
    float roughness_;
    float ior_;
    MaterialType type_;
    
    std::shared_ptr<Texture> albedo_texture_;
    std::shared_ptr<Texture> normal_texture_;
};

} // namespace are

#endif // ARE_INCLUDE_SCENE_MATERIAL_H