UserManager.h

// Copyright 2022 Stream.IO, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "OwnUser.h"
#include "OwnUserDto.h"
#include "Subsystems/EngineSubsystem.h"
#include "User/User.h"
#include "User/UserRef.h"
 
#include "UserManager.generated.h"
 
struct FUserObjectDto;
struct FOwnUserDto;
 
UCLASS()
class STREAMCHAT_API UUserManager final : public UEngineSubsystem
{
    GENERATED_BODY()
 
public:
    virtual void Initialize(FSubsystemCollectionBase& Collection) override;
    static UUserManager* Get();
 
    const FUser& GetUser(const FUserRef&);
    bool HasUser(const FUserRef&) const;
    FUserRef UpsertUser(const FUser&);
    FUserRef UpsertUser(const FUserDto&);
    FUserRef UpsertUser(const FUserObjectDto&);
    FUserRef UpsertUser(const FString& Id);
    TArray<FUserRef> UpsertUsers(const TArray<FUser>&);
    TArray<FUserRef> UpsertUsers(const TArray<FUserObjectDto>&);
    FUserUpdatedMultiDelegate& OnUserUpdated(const FUserRef&);
 
    const FOwnUser& SetCurrentUser(const FOwnUserDto& Dto);
    void ResetCurrentUser();
    bool HasCurrentUser() const;
    UFUNCTION(BlueprintPure, Category = "Stream|Users")
    const FOwnUser& GetCurrentUser() const;
 
private:
    TOptional<FOwnUser> CurrentUser;
    TMap<FString, FUser> Users;
    TMap<FString, FUserUpdatedMultiDelegate> UserUpdatedDelegates;
};