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

#include "SInsightsSettings.h"

#include "EditorStyleSet.h"
#include "Fonts/SlateFontInfo.h"
#include "Misc/Paths.h"
#include "SlateOptMacros.h"
#include "Styling/CoreStyle.h"
#include "Styling/SlateTypes.h"
#include "Widgets/Images/SImage.h"
#include "Widgets/Input/SButton.h"
#include "Widgets/Input/SCheckBox.h"
#include "Widgets/Layout/SGridPanel.h"
#include "Widgets/Layout/SSeparator.h"
#include "Widgets/SBoxPanel.h"
#include "Widgets/Text/STextBlock.h"

// Insights
#include "Insights/InsightsManager.h"
#include "Insights/InsightsSettings.h"

////////////////////////////////////////////////////////////////////////////////////////////////////

#define LOCTEXT_NAMESPACE "SInsightsSettings"

////////////////////////////////////////////////////////////////////////////////////////////////////

BEGIN_SLATE_FUNCTION_BUILD_OPTIMIZATION

void SInsightsSettings::Construct(const FArguments& InArgs)
{
    OnClose                                   = InArgs._OnClose;
    SettingPtr                                = InArgs._SettingPtr;

    const TSharedRef<SGridPanel> SettingsGrid = SNew(SGridPanel);
    int32 CurrentRowPos                       = 0;

    AddTitle(LOCTEXT("SettingsTitle", "Unreal Insights - Settings"), SettingsGrid, CurrentRowPos);
    AddSeparator(SettingsGrid, CurrentRowPos);
    AddHeader(LOCTEXT("TimingProfilerTitle", "TimingProfiler"), SettingsGrid, CurrentRowPos);
    AddOption(
        LOCTEXT("bShowEmptyTracksByDefault_T", "Show empty CPU/GPU tracks in Timing View, by default"),
        LOCTEXT("bShowEmptyTracksByDefault_TT", "If True, empty CPU/GPU tracks will be visible in Timing View. Applies when session starts."),
        SettingPtr->bShowEmptyTracksByDefault,
        SettingPtr->GetDefaults().bShowEmptyTracksByDefault,
        SettingsGrid,
        CurrentRowPos);
    AddSeparator(SettingsGrid, CurrentRowPos);
    AddFooter(SettingsGrid, CurrentRowPos);

    ChildSlot
        [SettingsGrid];

    SettingPtr->EnterEditMode();
}

////////////////////////////////////////////////////////////////////////////////////////////////////

void SInsightsSettings::AddTitle(const FText& TitleText, const TSharedRef<SGridPanel>& Grid, int32& RowPos)
{
    Grid->AddSlot(0, RowPos++)
        .Padding(2.0f)
            [SNew(STextBlock)
                 .Font(FCoreStyle::GetDefaultFontStyle("Regular", 18))
                 .Text(TitleText)];
    RowPos++;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

void SInsightsSettings::AddSeparator(const TSharedRef<SGridPanel>& Grid, int32& RowPos)
{
    Grid->AddSlot(0, RowPos++)
        .Padding(2.0f)
        .ColumnSpan(2)
            [SNew(SSeparator)
                 .Orientation(Orient_Horizontal)];
    RowPos++;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

void SInsightsSettings::AddHeader(const FText& HeaderText, const TSharedRef<SGridPanel>& Grid, int32& RowPos)
{
    Grid->AddSlot(0, RowPos++)
        .Padding(2.0f)
            [SNew(STextBlock)
                 .Font(FCoreStyle::GetDefaultFontStyle("Regular", 14))
                 .Text(HeaderText)];
    RowPos++;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

void SInsightsSettings::AddOption(const FText& OptionName, const FText& OptionDesc, bool& Value, const bool& Default, const TSharedRef<SGridPanel>& Grid, int32& RowPos)
{
    Grid->AddSlot(0, RowPos)
        .Padding(2.0f)
        .HAlign(HAlign_Left)
        .VAlign(VAlign_Center)
            [SNew(STextBlock)
                 .Text(OptionName)
                 .ToolTipText(OptionDesc)];

    Grid->AddSlot(1, RowPos)
        .Padding(2.0f)
        .HAlign(HAlign_Center)
        .VAlign(VAlign_Fill)
            [SNew(SHorizontalBox)

             + SHorizontalBox::Slot()
                   .AutoWidth()
                   .HAlign(HAlign_Center)
                   .VAlign(VAlign_Center)
                       [SNew(SCheckBox)
                            .IsChecked(this, &SInsightsSettings::OptionValue_IsChecked, (const bool*)&Value)
                            .OnCheckStateChanged(this, &SInsightsSettings::OptionValue_OnCheckStateChanged, (bool*)&Value)]

             + SHorizontalBox::Slot()
                   .AutoWidth()
                   .HAlign(HAlign_Center)
                   .VAlign(VAlign_Center)
                       [SNew(SButton)
                            .ToolTipText(LOCTEXT("ResetToDefaultToolTip", "Reset to default"))
                            .ButtonStyle(FEditorStyle::Get(), TEXT("NoBorder"))
                            .ContentPadding(0.0f)
                            .Visibility(this, &SInsightsSettings::OptionDefault_GetDiffersFromDefaultAsVisibility, (const bool*)&Value, (const bool*)&Default)
                            .OnClicked(this, &SInsightsSettings::OptionDefault_OnClicked, (bool*)&Value, (const bool*)&Default)
                            .Content()
                                [SNew(SImage)
                                     .Image(FEditorStyle::GetBrush("PropertyWindow.DiffersFromDefault"))]]];

    RowPos++;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

void SInsightsSettings::AddFooter(const TSharedRef<SGridPanel>& Grid, int32& RowPos)
{
    Grid->AddSlot(0, RowPos)
        .Padding(2.0f)
        .ColumnSpan(2)
        .HAlign(HAlign_Right)
            [SNew(SHorizontalBox)

             + SHorizontalBox::Slot()
                   .AutoWidth()
                   .MaxWidth(132)
                   .HAlign(HAlign_Center)
                       [SNew(SButton)
                            .OnClicked(this, &SInsightsSettings::SaveAndClose_OnClicked)
                                [SNew(SHorizontalBox)

                                 + SHorizontalBox::Slot()
                                       .AutoWidth()
                                       .HAlign(HAlign_Center)
                                       .VAlign(VAlign_Center)
                                           [SNew(SImage)
                                                .Image(FEditorStyle::GetBrush("Profiler.Misc.Save16"))]

                                 + SHorizontalBox::Slot()
                                       .AutoWidth()
                                           [SNew(STextBlock)
                                                .Text(LOCTEXT("SaveAndCloseTitle", "Save and close"))]]]

             + SHorizontalBox::Slot()
                   .AutoWidth()
                   .MaxWidth(132)
                   .HAlign(HAlign_Center)
                       [SNew(SButton)
                            .OnClicked(this, &SInsightsSettings::ResetToDefaults_OnClicked)
                                [SNew(SHorizontalBox)

                                 + SHorizontalBox::Slot()
                                       .AutoWidth()
                                       .HAlign(HAlign_Center)
                                       .VAlign(VAlign_Center)
                                           [SNew(SImage)
                                                .Image(FEditorStyle::GetBrush("Profiler.Misc.Reset16"))]

                                 + SHorizontalBox::Slot()
                                       .AutoWidth()
                                           [SNew(STextBlock)
                                                .Text(LOCTEXT("ResetToDefaultsTitle", "Reset to defaults"))]]]];

    RowPos++;
}

END_SLATE_FUNCTION_BUILD_OPTIMIZATION

////////////////////////////////////////////////////////////////////////////////////////////////////

FReply SInsightsSettings::SaveAndClose_OnClicked()
{
    OnClose.ExecuteIfBound();
    SettingPtr->ExitEditMode();
    SettingPtr->SaveToConfig();

    return FReply::Handled();
}

////////////////////////////////////////////////////////////////////////////////////////////////////

FReply SInsightsSettings::ResetToDefaults_OnClicked()
{
    SettingPtr->ResetToDefaults();

    return FReply::Handled();
}

////////////////////////////////////////////////////////////////////////////////////////////////////

void SInsightsSettings::OptionValue_OnCheckStateChanged(ECheckBoxState CheckBoxState, bool* ValuePtr)
{
    *ValuePtr = CheckBoxState == ECheckBoxState::Checked ? true : false;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

ECheckBoxState SInsightsSettings::OptionValue_IsChecked(const bool* ValuePtr) const
{
    return *ValuePtr ? ECheckBoxState::Checked : ECheckBoxState::Unchecked;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

EVisibility SInsightsSettings::OptionDefault_GetDiffersFromDefaultAsVisibility(const bool* ValuePtr, const bool* DefaultPtr) const
{
    return *ValuePtr != *DefaultPtr ? EVisibility::Visible : EVisibility::Hidden;
}

////////////////////////////////////////////////////////////////////////////////////////////////////

FReply SInsightsSettings::OptionDefault_OnClicked(bool* ValuePtr, const bool* DefaultPtr)
{
    *ValuePtr = *DefaultPtr;

    return FReply::Handled();
}

////////////////////////////////////////////////////////////////////////////////////////////////////

#undef LOCTEXT_NAMESPACE