// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "Widgets/DeclarativeSyntaxSupport.h"
#include "Input/Reply.h"
#include "Widgets/SWidget.h"
#include "Widgets/SCompoundWidget.h"
#include "Framework/Commands/Commands.h"
#include "Framework/Commands/UICommandList.h"

class FToolBarBuilder;
struct FToolMenuSection;

/** This class acts as a generic widget that listens to and process global play world actions */
class UNREALED_API SGlobalPlayWorldActions: public SCompoundWidget
{
public:
    SLATE_BEGIN_ARGS(SGlobalPlayWorldActions) {}
    SLATE_DEFAULT_SLOT(FArguments, Content)

    SLATE_END_ARGS()

    void Construct(const FArguments& InArgs);

    virtual FReply OnKeyDown(const FGeometry& MyGeometry, const FKeyEvent& InKeyEvent) override;

    virtual bool SupportsKeyboardFocus() const override;
};

//////////////////////////////////////////////////////////////////////////
// FPlayWorldCommands

class FPlayWorldCommands: public TCommands<FPlayWorldCommands>
{
private:
    friend class TCommands<FPlayWorldCommands>;

    FPlayWorldCommands();

public:
    // TCommands interface
    virtual void RegisterCommands() override;
    // End of TCommands interface

    /**
     * Binds all global kismet commands to delegates
     */
    static void BindGlobalPlayWorldCommands();

    /** Populates a toolbar with the menu commands for play-world control (pause/resume/stop/possess/eject/step/show current loc) */
    UNREALED_API static void BuildToolbar(FToolMenuSection& InSection, bool bIncludeLaunchButtonAndOptions = false);

    /**
     * Return the active widget that processes play world actions for PIE
     *
     */
    static TWeakPtr<SGlobalPlayWorldActions> GetActiveGlobalPlayWorldActionsWidget();

    /**
     * Set the active widget that processes play world actions for PIE
     *
     */
    static void SetActiveGlobalPlayWorldActionsWidget(TWeakPtr<SGlobalPlayWorldActions> ActiveWidget);

public:
    /**
     * A command list that can be passed around and isn't bound to an instance of any tool or editor.
     */
    UNREALED_API static TSharedPtr<FUICommandList> GlobalPlayWorldActions;

public:
    /** Start Simulating (SIE) */
    TSharedPtr<FUICommandInfo> Simulate;

    /** Play in editor (PIE) */
    TSharedPtr<FUICommandInfo> RepeatLastPlay;
    TSharedPtr<FUICommandInfo> PlayInViewport;
    TSharedPtr<FUICommandInfo> PlayInEditorFloating;
    TSharedPtr<FUICommandInfo> PlayInVR;
    TSharedPtr<FUICommandInfo> PlayInMobilePreview;
    TSharedPtr<FUICommandInfo> PlayInVulkanPreview;
    TSharedPtr<FUICommandInfo> PlayInNewProcess;
    TSharedPtr<FUICommandInfo> PlayInCameraLocation;
    TSharedPtr<FUICommandInfo> PlayInDefaultPlayerStart;
    TSharedPtr<FUICommandInfo> PlayInSettings;
    TSharedPtr<FUICommandInfo> PlayInNetworkSettings;

    TArray<TSharedPtr<FUICommandInfo>> PlayInTargetedMobilePreviewDevices;

    /** SIE & PIE controls */
    TSharedPtr<FUICommandInfo> ResumePlaySession;
    TSharedPtr<FUICommandInfo> PausePlaySession;
    TSharedPtr<FUICommandInfo> SingleFrameAdvance;
    TSharedPtr<FUICommandInfo> TogglePlayPauseOfPlaySession;
    TSharedPtr<FUICommandInfo> StopPlaySession;
    TSharedPtr<FUICommandInfo> LateJoinSession;
    TSharedPtr<FUICommandInfo> PossessEjectPlayer;
    TSharedPtr<FUICommandInfo> ShowCurrentStatement;
    TSharedPtr<FUICommandInfo> StepInto;
    TSharedPtr<FUICommandInfo> StepOver;
    TSharedPtr<FUICommandInfo> StepOut;
    TSharedPtr<FUICommandInfo> GetMouseControl;

    /** Launch on device */
    TSharedPtr<FUICommandInfo> RepeatLastLaunch;
    TSharedPtr<FUICommandInfo> OpenProjectLauncher;
    TSharedPtr<FUICommandInfo> OpenDeviceManager;

protected:
    /** A weak pointer to the current active widget that processes PIE actions */
    static TWeakPtr<SGlobalPlayWorldActions> ActiveGlobalPlayWorldActionsWidget;

    /**
     * Generates menu content for the PIE combo button drop down menu
     *
     * @return	Menu content widget
     */
    static TSharedRef<SWidget> GeneratePlayMenuContent(TSharedRef<FUICommandList> InCommandList);

    /**
     * Generates menu content for the Play On combo button drop down menu
     *
     * @return	Menu content widget
     */
    static TSharedRef<SWidget> GenerateLaunchMenuContent(TSharedRef<FUICommandList> InCommandList);

    // Add mobile PIE preview device commands
    void AddPIEPreviewDeviceCommands();

    // Add mobile PIE preview device actions
    static void AddPIEPreviewDeviceActions(const FPlayWorldCommands& Commands, FUICommandList& ActionList);
};

//////////////////////////////////////////////////////////////////////////
// FPlayWorldCommandCallbacks

class UNREALED_API FPlayWorldCommandCallbacks
{
public:
    /**
     * Called from the context menu to start previewing the game at the clicked location
     */
    static void StartPlayFromHere();

    static void ResumePlaySession_Clicked();
    static void PausePlaySession_Clicked();
    static void SingleFrameAdvance_Clicked();

    static bool IsInSIE();
    static bool IsInPIE();

    static bool IsInSIE_AndRunning();
    static bool IsInPIE_AndRunning();

    static bool HasPlayWorld();
    static bool HasPlayWorldAndPaused();
    static bool HasPlayWorldAndRunning();
};