#pragma once

#include "HealthTelemetry.h"
#include "RuntimeJson.h"
#include "ShaderTypes.h"

#include <atomic>
#include <chrono>
#include <filesystem>
#include <map>
#include <mutex>
#include <string>
#include <utility>
#include <vector>

class RuntimeStore;
class RuntimeHost
{
public:
	RuntimeHost();
	HealthTelemetry& GetHealthTelemetry() { return mHealthTelemetry; }
	const HealthTelemetry& GetHealthTelemetry() const { return mHealthTelemetry; }
	bool AutoReloadEnabled() const { return mAutoReloadEnabled; }

private:
	struct AppConfig
	{
		std::string shaderLibrary = "shaders";
		unsigned short serverPort = 8080;
		unsigned short oscPort = 9000;
		std::string oscBindAddress = "127.0.0.1";
		double oscSmoothing = 0.18;
		bool autoReload = true;
		unsigned maxTemporalHistoryFrames = 4;
		unsigned previewFps = 30;
		bool enableExternalKeying = false;
		std::string inputVideoFormat = "1080p";
		std::string inputFrameRate = "59.94";
		std::string outputVideoFormat = "1080p";
		std::string outputFrameRate = "59.94";
	};

	struct LayerPersistentState
	{
		std::string id;
		std::string shaderId;
		bool bypass = false;
		std::map<std::string, ShaderParameterValue> parameterValues;
	};

	struct PersistentState
	{
		std::vector<LayerPersistentState> layers;
	};

	bool NormalizeAndValidateValue(const ShaderParameterDefinition& definition, const JsonValue& value, ShaderParameterValue& normalizedValue, std::string& error) const;
	ShaderParameterValue DefaultValueForDefinition(const ShaderParameterDefinition& definition) const;
	void EnsureLayerDefaultsLocked(LayerPersistentState& layerState, const ShaderPackage& shaderPackage) const;
	JsonValue SerializeLayerStackLocked() const;
	bool DeserializeLayerStackLocked(const JsonValue& layersValue, std::vector<LayerPersistentState>& layers, std::string& error);
	void NormalizePersistentLayerIdsLocked();
	JsonValue SerializeParameterValue(const ShaderParameterDefinition& definition, const ShaderParameterValue& value) const;
	std::string TemporalHistorySourceToString(TemporalHistorySource source) const;
	LayerPersistentState* FindLayerById(const std::string& layerId);
	const LayerPersistentState* FindLayerById(const std::string& layerId) const;
	std::string GenerateLayerId();
	void MarkRenderStateDirtyLocked();
	void MarkParameterStateDirtyLocked();

private:
	friend class RuntimeStore;
	friend class RuntimeCoordinator;
	HealthTelemetry mHealthTelemetry;
	mutable std::mutex mMutex;
	AppConfig mConfig;
	PersistentState mPersistentState;
	std::filesystem::path mRepoRoot;
	std::filesystem::path mUiRoot;
	std::filesystem::path mDocsRoot;
	std::filesystem::path mShaderRoot;
	std::filesystem::path mRuntimeRoot;
	std::filesystem::path mPresetRoot;
	std::filesystem::path mRuntimeStatePath;
	std::filesystem::path mConfigPath;
	std::filesystem::path mWrapperPath;
	std::filesystem::path mGeneratedGlslPath;
	std::filesystem::path mPatchedGlslPath;
	std::map<std::string, ShaderPackage> mPackagesById;
	std::vector<std::string> mPackageOrder;
	std::vector<ShaderPackageStatus> mPackageStatuses;
	bool mReloadRequested;
	bool mCompileSucceeded;
	std::string mCompileMessage;
	double mStartupRandom;
	unsigned short mServerPort;
	bool mAutoReloadEnabled;
	std::chrono::steady_clock::time_point mStartTime;
	std::chrono::steady_clock::time_point mLastScanTime;
	std::atomic<uint64_t> mFrameCounter{ 0 };
	std::atomic<uint64_t> mRenderStateVersion{ 0 };
	std::atomic<uint64_t> mParameterStateVersion{ 0 };
	uint64_t mNextLayerId;
};