#pragma mark - Class Methods

+ (BOOL)requiresConstraintBasedLayout {
	return YES;
}


#pragma mark - Init

- (id)initWithFrame:(CGRect)frame {

    self = [super initWithFrame:frame];

	if (!self) {
		return nil;
	}

	_imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"cloud-logo"]];
	_imageView.translatesAutoresizingMaskIntoConstraints = NO;
	_imageView.contentMode = UIViewContentModeRedraw;
	[_imageView setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
	[_imageView setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
	[self addSubview:_imageView];

	_label = [VSSyncUI descriptionLabel];
	_label.translatesAutoresizingMaskIntoConstraints = NO;
	_label.text = NSLocalizedString(@"Vesper automatically keeps your notes backed up and shared across your devices. Sign in or create an account to get started. We’ll take care of the rest.", @"");
	_label.contentMode = UIViewContentModeRedraw;
	[_label setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
	[_label setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];

	[self addSubview:_label];

	[self setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
	[self setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];

	self.backgroundColor = [UIColor redColor];

	self.translatesAutoresizingMaskIntoConstraints = NO;
	
	return self;
}


#pragma mark - API

- (void)updateLabelWidth:(CGFloat)superviewWidth {

	self.label.preferredMaxLayoutWidth = superviewWidth - (20.0f * 2.0f);
}


#pragma mark - Constraints

- (void)updateConstraints {

	UIView *imageView = self.imageView;
	UIView *label = self.label;
	NSDictionary *bindings = NSDictionaryOfVariableBindings(imageView, label);

	NSLayoutConstraint *constraintCenterX = [NSLayoutConstraint constraintWithItem:self.imageView attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0.0];
	[self addConstraints:@[constraintCenterX]];

	NSArray *labelHorizontalConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"|-20-[label]-20-|" options:0 metrics:nil views:bindings];
	[self addConstraints:labelHorizontalConstraints];

	NSArray *verticalConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[imageView]-20-[label]-20-|" options:0 metrics:nil views:bindings];
	[self addConstraints:verticalConstraints];

	[super updateConstraints];
}