#pragma once

#include <filesystem>
#include <map>
#include <string>
#include <vector>

enum class ShaderParameterType
{
	Float,
	Vec2,
	Color,
	Boolean,
	Enum
};

struct ShaderParameterOption
{
	std::string value;
	std::string label;
};

struct ShaderParameterDefinition
{
	std::string id;
	std::string label;
	ShaderParameterType type = ShaderParameterType::Float;
	std::vector<double> defaultNumbers;
	std::vector<double> minNumbers;
	std::vector<double> maxNumbers;
	std::vector<double> stepNumbers;
	bool defaultBoolean = false;
	std::string defaultEnumValue;
	std::vector<ShaderParameterOption> enumOptions;
};

struct ShaderParameterValue
{
	std::vector<double> numberValues;
	bool booleanValue = false;
	std::string enumValue;
};

enum class TemporalHistorySource
{
	None,
	Source,
	PreLayerInput
};

struct TemporalSettings
{
	bool enabled = false;
	TemporalHistorySource historySource = TemporalHistorySource::None;
	unsigned requestedHistoryLength = 0;
	unsigned effectiveHistoryLength = 0;
};

struct ShaderTextureAsset
{
	std::string id;
	std::filesystem::path path;
	std::filesystem::file_time_type writeTime;
};

struct ShaderPackage
{
	std::string id;
	std::string displayName;
	std::string description;
	std::string category;
	std::string entryPoint;
	std::filesystem::path directoryPath;
	std::filesystem::path shaderPath;
	std::filesystem::path manifestPath;
	std::vector<ShaderParameterDefinition> parameters;
	std::vector<ShaderTextureAsset> textureAssets;
	TemporalSettings temporal;
	std::filesystem::file_time_type shaderWriteTime;
	std::filesystem::file_time_type manifestWriteTime;
};

struct RuntimeRenderState
{
	std::string layerId;
	std::string shaderId;
	std::vector<ShaderParameterDefinition> parameterDefinitions;
	std::map<std::string, ShaderParameterValue> parameterValues;
	std::vector<ShaderTextureAsset> textureAssets;
	double timeSeconds = 0.0;
	double frameCount = 0.0;
	double mixAmount = 1.0;
	double bypass = 0.0;
	unsigned inputWidth = 0;
	unsigned inputHeight = 0;
	unsigned outputWidth = 0;
	unsigned outputHeight = 0;
	bool isTemporal = false;
	TemporalHistorySource temporalHistorySource = TemporalHistorySource::None;
	unsigned requestedTemporalHistoryLength = 0;
	unsigned effectiveTemporalHistoryLength = 0;
};