#pragma once

#include "VideoPlayoutPolicy.h"

#include <cstddef>
#include <cstdint>
#include <string>

enum class OutputProductionAction
{
	Produce,
	Wait,
	Throttle
};

struct OutputProductionPressure
{
	std::size_t readyQueueDepth = 0;
	std::size_t readyQueueCapacity = 0;
	uint64_t readyQueueUnderrunCount = 0;
	uint64_t lateStreak = 0;
	uint64_t dropStreak = 0;
};

struct OutputProductionDecision
{
	OutputProductionAction action = OutputProductionAction::Wait;
	std::size_t requestedFrames = 0;
	std::size_t targetReadyFrames = 0;
	std::size_t maxReadyFrames = 0;
	std::string reason;
};

class OutputProductionController
{
public:
	explicit OutputProductionController(const VideoPlayoutPolicy& policy = VideoPlayoutPolicy());

	void Configure(const VideoPlayoutPolicy& policy);
	OutputProductionDecision Decide(const OutputProductionPressure& pressure) const;

private:
	VideoPlayoutPolicy mPolicy;
};

const char* OutputProductionActionName(OutputProductionAction action);