//
//  PrimaryButtonView.m
//  myverizon
//
//  Created by Scott Pfeil on 12/11/15.
//  Copyright © 2015 Verizon Wireless. All rights reserved.
//

#import "PrimaryButtonView.h"
#import <MVMCore/NSDictionary+MFConvenience.h>
#import <MVMCore/MVMCoreDispatchUtility.h>
#import <MVMCore/MVMCoreJSONConstants.h>
#import "MVMCoreUICommonViewsUtility.h"
#import "MVMCoreUIConstants.h"

@interface PrimaryButtonView ()
    
@property (weak, nonatomic) UIView *twoButtonView;
@property (weak, nonatomic) NSLayoutConstraint *alignCenterPin;
@property (weak, nonatomic) NSLayoutConstraint *alignCenterLeftPin;
@property (weak, nonatomic) NSLayoutConstraint *alignCenterRightPin;
@property (weak, nonatomic) NSLayoutConstraint *height;

@property (nonatomic, strong) NSArray<NSLayoutConstraint *> *horizontalConstraints;

@end

@implementation PrimaryButtonView
    
- (instancetype)init {
    if (self = [super init]) {
        self.backgroundColor = [UIColor clearColor];
        self.translatesAutoresizingMaskIntoConstraints = NO;
        [self setupWithSingleButton];
    }
    return self;
}
    
- (instancetype)initWithCoder:(NSCoder *)aDecoder {
    if (self = [super initWithCoder:aDecoder]) {
        self.backgroundColor = [UIColor clearColor];
        self.translatesAutoresizingMaskIntoConstraints = NO;
        [self setupWithSingleButton];
    }
    return self;
}
    
- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor clearColor];
        self.translatesAutoresizingMaskIntoConstraints = NO;
        [self setupWithSingleButton];
    }
    return self;
}
    
- (nonnull instancetype)initButtonSmall:(BOOL)small enabled:(BOOL)enabled {
    if (self = [self init]) {
        [self.primaryButton setAsSmallButton:small];
        [self.primaryButton setEnabled:enabled];
    }
    return self;
}

- (nonnull instancetype)initWithTwoButtons {
    if (self = [self init]) {
        [self setupWithTwoButtons];
    }
    return self;
}

- (nonnull instancetype)initButtonSmall:(BOOL)small buttonMap:(nullable NSDictionary *)buttonMap actionDelegate:(nullable NSObject <MVMCoreActionDelegateProtocol>*)actionDelegate additionalData:(nullable NSDictionary *)additionalData buttonDelegate:(nullable id <ButtonDelegateProtocol>)buttonDelegate {
    if (self = [self init]) {
        [self setupWithButtonMap:buttonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
        [self.primaryButton setAsSmallButton:small];
        [self.secondaryButton setAsSmallButton:small];
    }
    return self;
}

- (nonnull instancetype)initWithPrimaryButtonMap:(nullable NSDictionary *)primaryButtonMap secondaryButtonMap:(nullable NSDictionary *)secondaryButtonMap actionDelegate:(nullable NSObject <MVMCoreActionDelegateProtocol>*)actionDelegate additionalData:(nullable NSDictionary *)additionalData buttonDelegate:(nullable id <ButtonDelegateProtocol>)buttonDelegate {
    if (self = [self init]) {
        [self setupWithPrimaryButtonMap:primaryButtonMap secondaryButtonMap:secondaryButtonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
    }
    return self;
}

- (void)setupWithButtonMap:(nullable NSDictionary *)buttonMap actionDelegate:(nullable NSObject <MVMCoreActionDelegateProtocol>*)actionDelegate additionalData:(nullable NSDictionary *)additionalData buttonDelegate:(nullable id <ButtonDelegateProtocol>)buttonDelegate {
    
    NSDictionary *secondaryButtonMap = [buttonMap dict:KeySecondaryButton];
    NSDictionary *primaryButtonMap = [buttonMap dict:KeyPrimaryButton];
    [self setupWithPrimaryButtonMap:primaryButtonMap secondaryButtonMap:secondaryButtonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
}

- (void)setupWithPrimaryButtonMap:(nullable NSDictionary *)primaryButtonMap secondaryButtonMap:(nullable NSDictionary *)secondaryButtonMap actionDelegate:(nullable NSObject <MVMCoreActionDelegateProtocol>*)actionDelegate additionalData:(nullable NSDictionary *)additionalData buttonDelegate:(nullable id <ButtonDelegateProtocol>)buttonDelegate {
    
    if (primaryButtonMap && secondaryButtonMap) {
        self.height.active = NO;
        
        // Setup with two buttons
        if (!self.primaryButton || !self.secondaryButton) {
            [self removeSubviews];
            self.twoButtonView = nil;
            [self setupWithTwoButtons];
        }
        [self.primaryButton setWithActionMap:primaryButtonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
        [self.secondaryButton setWithActionMap:secondaryButtonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
    } else if (primaryButtonMap || secondaryButtonMap) {
        self.height.active = NO;

        // Setup with one button.
        if (!self.primaryButton || self.secondaryButton) {
            [self removeSubviews];
            self.primaryButton = nil;
            self.secondaryButton = nil;
            [self setupWithSingleButton];
        }
        [self alignCenter];
        
        if (primaryButtonMap) {
            
            // Only primary button
            [self.primaryButton setWithActionMap:primaryButtonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
            self.primaryButton.bordered = NO;
        } else {
            
            // Only secondary button
            [self.primaryButton setWithActionMap:secondaryButtonMap actionDelegate:actionDelegate additionalData:additionalData buttonDelegate:buttonDelegate];
            self.primaryButton.bordered = YES;
        }
    } else {
        [self removeSubviews];
        if (!self.height) {
            NSLayoutConstraint *height = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:0];
            height.active = YES;
            self.height = height;
        }
    }
}

- (id)createButton {
    return [PrimaryButton primaryButton:NO];
}
    
- (void)setupWithTwoButtons {
    if (self.primaryButton) {
        [self.primaryButton removeFromSuperview];
        self.primaryButton = nil;
    }
    
    if (!self.twoButtonView) {
        self.backgroundColor = [UIColor clearColor];
        self.translatesAutoresizingMaskIntoConstraints = NO;
        
        UIView *buttonView = [MVMCoreUICommonViewsUtility commonView];
        
        PrimaryButton *leftButton = [PrimaryButton primaryButton];
        leftButton.bordered = YES;
        leftButton.translatesAutoresizingMaskIntoConstraints = NO;
        [buttonView addSubview:leftButton];
        self.secondaryButton = leftButton;
        
        PrimaryButton *rightButton = [PrimaryButton primaryButton];
        rightButton.translatesAutoresizingMaskIntoConstraints = NO;
        [buttonView addSubview:rightButton];
        self.primaryButton = rightButton;
        
        [rightButton.widthAnchor constraintEqualToAnchor:leftButton.widthAnchor multiplier:1].active = YES;
        
        [NSLayoutConstraint activateConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[leftButton]-0-|" options:NSLayoutFormatAlignAllCenterY metrics:nil views:NSDictionaryOfVariableBindings(leftButton)]];
        [NSLayoutConstraint activateConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[rightButton]-0-|" options:NSLayoutFormatAlignAllCenterY metrics:nil views:NSDictionaryOfVariableBindings(rightButton)]];
        self.horizontalConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[leftButton]-10-[rightButton]-0-|" options:NSLayoutFormatAlignAllCenterY metrics:nil views:NSDictionaryOfVariableBindings(leftButton,rightButton)];
        [NSLayoutConstraint activateConstraints:self.horizontalConstraints];
        [self addSubview:buttonView];
        
        [self setupAlignmentsWithView:buttonView];
        
        self.twoButtonView = buttonView;
        
        [self alignCenter];
    }
}

- (void)setupWithSingleButton {
    
    if (!self.primaryButton) {
        self.backgroundColor = [UIColor clearColor];
        self.translatesAutoresizingMaskIntoConstraints = NO;
        
        PrimaryButton *button = [self createButton];
        button.translatesAutoresizingMaskIntoConstraints = NO;
        [self addSubview:button];
        self.primaryButton = button;
        
        [self setupAlignmentsWithView:button];
        
        [self alignCenter];
    }
}

- (void)setupAlignmentsWithView:(UIView *)view {
    // Align left and right constants.
    NSLayoutConstraint *leftPin = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0];
    self.leftPin = leftPin;
    leftPin.active = YES;
    
    NSLayoutConstraint *topPin = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeTop multiplier:1.0 constant:0];
    self.topPin = topPin;
    topPin.active = YES;
    
    NSLayoutConstraint *bottomPin = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:view attribute:NSLayoutAttributeBottom multiplier:1.0 constant:0];
    self.bottomPin = bottomPin;
    bottomPin.active = YES;
    
    NSLayoutConstraint *rightPin = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationEqual toItem:view attribute:NSLayoutAttributeRight multiplier:1.0 constant:0];
    self.rightPin = rightPin;
    rightPin.active = YES;
    
    // Center alignments
    NSLayoutConstraint *alignCenter = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeCenterX multiplier:1.0 constant:0];
    self.alignCenterPin = alignCenter;
    alignCenter.active = YES;
    
    NSLayoutConstraint *centerLeftPin = [NSLayoutConstraint constraintWithItem:view attribute:NSLayoutAttributeLeft relatedBy:NSLayoutRelationGreaterThanOrEqual toItem:self attribute:NSLayoutAttributeLeft multiplier:1.0 constant:0];
    self.alignCenterLeftPin = centerLeftPin;
    centerLeftPin.active = YES;
    
    NSLayoutConstraint *centerRightPin = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeRight relatedBy:NSLayoutRelationGreaterThanOrEqual toItem:view attribute:NSLayoutAttributeRight multiplier:1.0 constant:0];
    self.alignCenterRightPin = centerRightPin;
    centerRightPin.active = YES;
}

- (void)updateView:(CGFloat)size {
    [super updateView:size];
    [MVMCoreDispatchUtility performBlockOnMainThread:^{
        [self.primaryButton updateView:size];
        [self.secondaryButton updateView:size];
    }];
}

- (void)alignLeft {
    self.alignCenterPin.active = NO;
    self.alignCenterLeftPin.active = NO;
    self.alignCenterRightPin.active = YES;
    self.leftPin.active = YES;
    self.rightPin.active = NO;
}

- (void)alignCenter {
    self.alignCenterPin.active = YES;
    self.alignCenterLeftPin.active = YES;
    self.alignCenterRightPin.active = YES;
    self.leftPin.active = NO;
    self.rightPin.active = NO;
}

- (void)alignFill {
    self.alignCenterPin.active = NO;
    self.alignCenterLeftPin.active = NO;
    self.alignCenterRightPin.active = NO;
    self.leftPin.active = YES;
    self.rightPin.active = YES;
}

- (void)alignRight {
    self.alignCenterPin.active = NO;
    self.alignCenterLeftPin.active = YES;
    self.alignCenterRightPin.active = NO;
    self.leftPin.active = NO;
    self.rightPin.active = YES;
}

- (void)setLeftPinConstant:(CGFloat)constant {
    [super setLeftPinConstant:constant];
    self.alignCenterLeftPin.constant = constant;
}

- (void)setRightPinConstant:(CGFloat)constant {
    [super setRightPinConstant:constant];
    self.alignCenterRightPin.constant = constant;
}

- (void)resetConstraints {
    [super resetConstraints];
    self.primaryButton.enabled = NO;
}
    
- (void)hidePrimaryLeftButton {
    if (!self.secondaryButton.hidden) {
        self.secondaryButton.hidden = YES;
        PrimaryButton *rightButton = self.primaryButton;
        [NSLayoutConstraint deactivateConstraints:self.horizontalConstraints];
        self.horizontalConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[rightButton]-0-|" options:NSLayoutFormatAlignAllCenterY metrics:nil views:NSDictionaryOfVariableBindings(rightButton)];
        [NSLayoutConstraint activateConstraints:self.horizontalConstraints];
    }
}
    
- (void)hidePrimaryRightButton {
    if (!self.primaryButton.hidden) {
        self.primaryButton.hidden = YES;
        PrimaryButton *leftButton = self.secondaryButton;
        [NSLayoutConstraint deactivateConstraints:self.horizontalConstraints];
        self.horizontalConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[leftButton]-0-|" options:NSLayoutFormatAlignAllCenterY metrics:nil views:NSDictionaryOfVariableBindings(leftButton)];
        [NSLayoutConstraint activateConstraints:self.horizontalConstraints];
    }
}
    
- (void)showBothPrimaryButtons {
    self.primaryButton.hidden = NO;
    self.secondaryButton.hidden = NO;
    PrimaryButton *rightButton = self.primaryButton;
    PrimaryButton *leftButton = self.secondaryButton;
    [NSLayoutConstraint deactivateConstraints:self.horizontalConstraints];
    self.horizontalConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[leftButton]-10-[rightButton]-0-|" options:NSLayoutFormatAlignAllCenterY metrics:nil views:NSDictionaryOfVariableBindings(leftButton,rightButton)];
    [NSLayoutConstraint activateConstraints:self.horizontalConstraints];
}
    
- (void)hideBothPrimaryButtons {
    self.primaryButton.hidden = YES;
    self.secondaryButton.hidden = YES;
}

- (void)removeSubviews {
    for (UIView *view in self.subviews) {
        [view removeFromSuperview];
    }
}
    
@end