/*

 Copyright (C) 2018 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Custom `SKNode` based menu.

 */

#define DURATION .3f

#import "AAPLMenu.h"

#import "AAPLButton.h"

#import "AAPLSlider.h"

@interface AAPLMenu ()

@property (strong, nonatomic) NSMutableArray<AAPLButton*> *cameraButton;

@property (strong, nonatomic) NSMutableArray<AAPLSlider*> *dofSlider;

@property (nonatomic) bool menuHidden;

@end

@implementation AAPLMenu

- (id)initWithSize:(CGSize)size

{

    if (self = [super init]) {

        // Track mouse event

        self.userInteractionEnabled = YES;

        // Init buttons

        // Menu

        {

            _cameraButton = [[NSMutableArray alloc] init];

            NSArray *txt = [NSArray arrayWithObjects: @"Camera 1", @"Camera 2", @"Camera 3", nil];

#define ButtonMargin 250

#define MenuY 40

#define SecondaryMenuY 80

            for(int i=0; i<txt.count; i++)

            {

                [_cameraButton addObject: [AAPLButton buttonWithText:txt[i]] ];

                CGFloat x = _cameraButton[i].width/2 + (i>0 ? _cameraButton[i-1].position.x + _cameraButton[i-1].width/2 + 10 : ButtonMargin);

                CGFloat y = - MenuY;

                _cameraButton[i].position = CGPointMake(x, y);

                [_cameraButton[i] setClickedTarget:self action:@selector(menuChanged:)];

                [self addChild:_cameraButton[i]];

            }

        }

        // Depth of Field

        {

            NSArray *txt = [NSArray arrayWithObjects: @"fStop", @"Focus", nil];

            _dofSlider = [[NSMutableArray alloc] init];

            for(int i=0; i<2; i++)

            {

                _dofSlider[i] = [AAPLSlider sliderWithWidth:300 height:10 text:txt[i]];

                _dofSlider[i].position = CGPointMake(ButtonMargin, -i*30.-70.f);

                _dofSlider[i].alpha = 0.f;

                [self addChild:_dofSlider[i]];

            }

            [_dofSlider[0] setClickedTarget:self action:@selector(cameraFStopChanged:)];

            [_dofSlider[1] setClickedTarget:self action:@selector(cameraFocusDistanceChanged:)];

        }

    }

    [self showMenu];

    return self;

}

-(IBAction) menuChanged:(id)sender

{

    [self hideAllSubMenu];

    [_cameraButton enumerateObjectsUsingBlock:^(id object, NSUInteger index, BOOL *stop) {

        if(sender == object)

        {

            [self.delegate debugMenuSelectCameraAtIndex:index];

            if(index == 2)

            {

                [self showSliderMenu];

            }

        }

    }];

}

-(void)setHidden:(BOOL)hidden

{

    if(hidden)

        [self hideMenu];

    else

        [self showMenu];

}

-(BOOL)isHidden

{

    return _menuHidden;

}

- (void)showMenu

{

    for(int i=0; i<3; i++)

    {

        _cameraButton[i].alpha = 0.;

        SKAction *fade = [SKAction fadeInWithDuration:DURATION];

        [_cameraButton[i] runAction:fade];

    }

    _menuHidden = false;

}

- (void)hideMenu

{

    for(int i=0; i<3; i++)

    {

        _cameraButton[i].alpha = 1.;

        SKAction *fade = [SKAction fadeOutWithDuration:DURATION];

        [_cameraButton[i] runAction:fade];

    }

    [self hideAllSubMenu];

    _menuHidden = true;

}

- (void)hideAllSubMenu

{

    for(int i=0; i<2; i++)

    {

        SKAction *fade = [SKAction fadeOutWithDuration:DURATION];

        [_dofSlider[i] runAction:fade];

    }

}

- (void)showSliderMenu

{

    for(int i=0; i<2; i++)

    {

        SKAction *fade = [SKAction fadeInWithDuration:DURATION];

        [_dofSlider[i] runAction:fade];

    }

    [_dofSlider[0] setValue:.1];

    [_dofSlider[1] setValue:.5];

    [self performSelector:@selector(cameraFStopChanged:) withObject:_dofSlider[0]];

    [self performSelector:@selector(cameraFocusDistanceChanged:) withObject:_dofSlider[1]];

}

-(IBAction) cameraFStopChanged:(id)sender

{

    if ([self.delegate respondsToSelector:@selector(fStopChanged:)]) {

        [self.delegate fStopChanged:_dofSlider[0].value+.2f ];

    }

}

-(IBAction) cameraFocusDistanceChanged:(id)sender

{

    if ([self.delegate respondsToSelector:@selector(focusDistanceChanged:)]) {

        [self.delegate focusDistanceChanged:_dofSlider[1].value*20.f+3.f ];

    }

}

@end