#pragma once
#include "Midi/MidiMessageSequence.h"
#include "Pattern.h"

class FPluginHost;

DECLARE_MULTICAST_DELEGATE_TwoParams(FOnMidiPatternChanged, FPluginHost*, FMidiMessageSequence*)
DECLARE_MULTICAST_DELEGATE_TwoParams(FOnMidiPatternTrigger, FPluginHost*, FMidiMessageSequence::MidiEventHolder*)

class FMidiPattern : public FPattern
{
public:
	FMidiPattern();
	virtual ~FMidiPattern() override;
	
	virtual void Process(AudioFrame PatternPos, uint32 InLength) override;
	
	virtual AudioFrame GetLength() override;
	virtual void Reset() override;
	
	FMidiMessageSequence& GetSequence(FPluginHost* PluginHost);
	const TMap<FPluginHost*, FMidiMessageSequence>& GetSequence() const { return Sequence; }
	FPluginHost* GetPluginHost(FMidiMessageSequence* InSequence);
	void DeleteSequence(FPluginHost* PluginHost);


	void NotifyOnChanged(FMidiMessageSequence* InSequence);
	void NotifyOnChanged_MainThread(FMidiMessageSequence* InSequence);
	void NotifyOnChanged(FPluginHost* PluginHost);
	
	FOnMidiPatternChanged OnChanged;
	FOnMidiPatternChanged OnChanged_MainThread;
	FOnMidiPatternTrigger OnTrigger;
private:
	TMap<FPluginHost*, FMidiMessageSequence> Sequence;
	TMap<FMidiMessageSequence*, FPluginHost*> SequenceToPluginHost;
	FCriticalSection SequenceLock;
};