//
//  MFLoadingViewController.m
//  myverizon
//
//  Created by Scott Pfeil on 11/20/14.
//  Copyright (c) 2014 Verizon Wireless. All rights reserved.
//

#import "MFLoadingViewController.h"
#import "MFLoadingSpinner.h"
#import "NSLayoutConstraint+MFConvenience.h"
#import "UIColor+MFConvenience.h"
#import "MFStyler.h"
#import "MVMCoreUICommonViewsUtility.h"

@interface MFLoadingViewController ()

@property (nullable, weak, nonatomic) MFLoadingSpinner *activityIndicator;
@property (nullable, weak, nonatomic) UIView *transparentBackgroundView;

@end

@implementation MFLoadingViewController

- (void)loadView {
    UIView *view = [[UIView alloc] initWithFrame:CGRectZero];
    view.backgroundColor = [UIColor clearColor];
    self.view = view;
    
    // Sets up the loading view.
    MFLoadingSpinner *activityIndicatorView = [[MFLoadingSpinner alloc] initWithFrame:CGRectMake(0, 0, 36, 36)];
    activityIndicatorView.backgroundColor = [UIColor clearColor];
    activityIndicatorView.translatesAutoresizingMaskIntoConstraints = NO;
    [view addSubview:activityIndicatorView];
    self.activityIndicator = activityIndicatorView;
    [NSLayoutConstraint constraintPinView:activityIndicatorView heightConstraint:YES heightConstant:PaddingSix widthConstraint:YES widthConstant:PaddingSix];

    // Sets the constraints for the activityIndicatorView
    [NSLayoutConstraint constraintPinSubview:activityIndicatorView pinCenterX:YES pinCenterY:YES];
    
    // Sets up the transparent background view.
    UIView *transparentBackground = [MVMCoreUICommonViewsUtility commonView];
    transparentBackground.backgroundColor = [UIColor mfBackgroundGray];
    transparentBackground.alpha = 0.9;
    [view insertSubview:transparentBackground belowSubview:activityIndicatorView];
    self.transparentBackgroundView = transparentBackground;
    
    // Sets the constraints of the transparent background view to be the same as the activity indicator view.
    [NSLayoutConstraint constraintPinSubviewToSuperview:transparentBackground];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

#pragma mark - LoadingView Functions

- (void)startLoading {
    [self.activityIndicator resumeSpinner];
}

- (void)stopLoading {
    [self.activityIndicator pauseSpinner];
}

@end