chore: Bringing DashPay into the project

DashPay/Assets/DPAssets.xcassets/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

DashPay/Assets/DPAssets.xcassets/icon_info.imageset/Contents.json

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+{
+  "images" : [
+    {
+      "filename" : "icon_info.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "[email protected]",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "[email protected]",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

DashPay/Assets/DPAssets.xcassets/pay_user_accessory.imageset/Contents.json

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+{
+  "images" : [
+    {
+      "filename" : "pay_user_accessory.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "[email protected]",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "filename" : "[email protected]",
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

DashPay/Presentation/Containers/DWFullScreenModalControllerViewController.h

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+//
+//  Created by Andrew Podkovyrin
+//  Copyright © 2021 Dash Core Group. All rights reserved.
+//
+//  Licensed under the MIT License (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  https://opensource.org/licenses/MIT
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class DWFullScreenModalControllerViewController;
+
+@protocol DWFullScreenModalControllerViewControllerDelegate <NSObject>
+
+- (void)fullScreenModalControllerViewControllerDidCancel:(DWFullScreenModalControllerViewController *)controller;
+
+@end
+
+@interface DWFullScreenModalControllerViewController : UIViewController
+
+@property (nullable, nonatomic, weak) id<DWFullScreenModalControllerViewControllerDelegate> delegate;
+
+- (instancetype)initWithController:(UIViewController *)controller;
+
+- (instancetype)init NS_UNAVAILABLE;
+- (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil
+                         bundle:(nullable NSBundle *)nibBundleOrNil NS_UNAVAILABLE;
+- (instancetype)initWithCoder:(nullable NSCoder *)coder NS_UNAVAILABLE;
++ (instancetype)new NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END

DashPay/Presentation/Containers/DWFullScreenModalControllerViewController.m

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+//
+//  Created by Andrew Podkovyrin
+//  Copyright © 2021 Dash Core Group. All rights reserved.
+//
+//  Licensed under the MIT License (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  https://opensource.org/licenses/MIT
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+#import "DWFullScreenModalControllerViewController.h"
+
+#import "DWUIKit.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface DWFullScreenModalControllerViewController ()
+
+@property (readonly, nonatomic, strong) UIViewController *contentController;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+@implementation DWFullScreenModalControllerViewController
+
+- (instancetype)initWithController:(UIViewController *)controller {
+    self = [super initWithNibName:nil bundle:nil];
+    if (self) {
+        _contentController = controller;
+    }
+    return self;
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    self.view.backgroundColor = [UIColor dw_secondaryBackgroundColor];
+
+    UIView *header = [[UIView alloc] init];
+    header.translatesAutoresizingMaskIntoConstraints = NO;
+    [self.view addSubview:header];
+
+    UILabel *label = [[UILabel alloc] init];
+    label.translatesAutoresizingMaskIntoConstraints = NO;
+    label.textColor = [UIColor dw_darkTitleColor];
+    label.textAlignment = NSTextAlignmentCenter;
+    label.font = [UIFont dw_fontForTextStyle:UIFontTextStyleHeadline];
+    label.text = self.title;
+    label.adjustsFontForContentSizeCategory = YES;
+    [header addSubview:label];
+
+    UIButton *cancelButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    cancelButton.translatesAutoresizingMaskIntoConstraints = NO;
+    [cancelButton setImage:[[UIImage imageNamed:@"payments_nav_cross"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate]
+                  forState:UIControlStateNormal];
+    cancelButton.tintColor = [UIColor dw_darkTitleColor];
+    [cancelButton addTarget:self action:@selector(cancelButtonAction) forControlEvents:UIControlEventTouchUpInside];
+    [header addSubview:cancelButton];
+
+    UIView *contentView = [[UIView alloc] init];
+    contentView.translatesAutoresizingMaskIntoConstraints = NO;
+    [self.view addSubview:contentView];
+
+    [NSLayoutConstraint activateConstraints:@[
+        [header.topAnchor constraintEqualToAnchor:self.view.safeAreaLayoutGuide.topAnchor],
+        [header.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor
+                                             constant:8],
+        [self.view.trailingAnchor constraintEqualToAnchor:header.trailingAnchor
+                                                 constant:8],
+        [header.heightAnchor constraintEqualToConstant:44],
+
+        [contentView.topAnchor constraintEqualToAnchor:header.bottomAnchor],
+        [contentView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor],
+        [self.view.trailingAnchor constraintEqualToAnchor:contentView.trailingAnchor],
+        [self.view.bottomAnchor constraintEqualToAnchor:contentView.bottomAnchor],
+
+        [label.topAnchor constraintEqualToAnchor:header.topAnchor],
+        [label.leadingAnchor constraintEqualToAnchor:header.leadingAnchor
+                                            constant:44],
+        [header.bottomAnchor constraintEqualToAnchor:label.bottomAnchor],
+
+        [cancelButton.topAnchor constraintEqualToAnchor:header.topAnchor],
+        [cancelButton.leadingAnchor constraintEqualToAnchor:label.trailingAnchor],
+        [cancelButton.trailingAnchor constraintEqualToAnchor:header.trailingAnchor],
+        [header.bottomAnchor constraintEqualToAnchor:cancelButton.bottomAnchor],
+        [cancelButton.widthAnchor constraintEqualToConstant:44],
+    ]];
+
+    [self dw_embedChild:self.contentController inContainer:contentView];
+}
+
+- (void)cancelButtonAction {
+    [self.delegate fullScreenModalControllerViewControllerDidCancel:self];
+}
+
+@end

DashPay/Presentation/Error/DWNetworkErrorViewController.h

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+//
+//  Created by Andrew Podkovyrin
+//  Copyright © 2020 Dash Core Group. All rights reserved.
+//
+//  Licensed under the MIT License (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  https://opensource.org/licenses/MIT
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NS_ENUM(NSUInteger, DWErrorDescriptionType) {
+    DWErrorDescriptionType_Profile,
+    DWErrorDescriptionType_AcceptContactRequest,
+    DWErrorDescriptionType_SendContactRequest,
+};
+
+@interface DWNetworkErrorViewController : UIViewController
+
+- (instancetype)initWithType:(DWErrorDescriptionType)type;
+
+- (instancetype)init NS_UNAVAILABLE;
++ (instancetype)new NS_UNAVAILABLE;
+- (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil bundle:(nullable NSBundle *)nibBundleOrNil NS_UNAVAILABLE;
+- (instancetype)initWithCoder:(NSCoder *)coder NS_UNAVAILABLE;
+
+@end
+
+NS_ASSUME_NONNULL_END

DashPay/Presentation/Error/DWNetworkErrorViewController.m

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+//
+//  Created by Andrew Podkovyrin
+//  Copyright © 2020 Dash Core Group. All rights reserved.
+//
+//  Licensed under the MIT License (the "License");
+//  you may not use this file except in compliance with the License.
+//  You may obtain a copy of the License at
+//
+//  https://opensource.org/licenses/MIT
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+
+#import "DWNetworkErrorViewController.h"
+
+#import "DWModalPopupTransition.h"
+#import "DWNetworkUnavailableView.h"
+#import "DWUIKit.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface DWNetworkErrorViewController ()
+
+@property (nonatomic, strong) DWModalPopupTransition *modalTransition;
+@property (nonatomic, assign) DWErrorDescriptionType type;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+@implementation DWNetworkErrorViewController
+
+- (instancetype)initWithType:(DWErrorDescriptionType)type {
+    self = [super initWithNibName:nil bundle:nil];
+    if (self) {
+        _type = type;
+
+        _modalTransition = [[DWModalPopupTransition alloc] initWithInteractiveTransitionAllowed:NO];
+
+        self.transitioningDelegate = self.modalTransition;
+        self.modalPresentationStyle = UIModalPresentationCustom;
+    }
+    return self;
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    self.view.backgroundColor = [UIColor clearColor];
+
+    UIView *contentView = [[UIView alloc] init];
+    contentView.translatesAutoresizingMaskIntoConstraints = NO;
+    contentView.backgroundColor = [UIColor dw_backgroundColor];
+    contentView.layer.cornerRadius = 8.0;
+    contentView.layer.masksToBounds = YES;
+    [self.view addSubview:contentView];
+
+    DWNetworkUnavailableView *errorView = [[DWNetworkUnavailableView alloc] initWithFrame:CGRectZero];
+    errorView.translatesAutoresizingMaskIntoConstraints = NO;
+    switch (self.type) {
+        case DWErrorDescriptionType_Profile:
+            errorView.error = NSLocalizedString(@"Unable to fetch contact details", nil);
+            break;
+        case DWErrorDescriptionType_AcceptContactRequest:
+            errorView.error = NSLocalizedString(@"Unable to accept contact request", nil);
+            break;
+        case DWErrorDescriptionType_SendContactRequest:
+            errorView.error = NSLocalizedString(@"Unable to send contact request", nil);
+            break;
+    }
+    [contentView addSubview:errorView];
+
+    UIButton *closeButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    closeButton.translatesAutoresizingMaskIntoConstraints = NO;
+    [closeButton setTitle:NSLocalizedString(@"Close", nil) forState:UIControlStateNormal];
+    [closeButton addTarget:self action:@selector(closeButtonAction:) forControlEvents:UIControlEventTouchUpInside];
+    [contentView addSubview:closeButton];
+
+
+    [NSLayoutConstraint activateConstraints:@[
+        [contentView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor],
+        [contentView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor],
+        [contentView.centerYAnchor constraintEqualToAnchor:self.view.centerYAnchor],
+
+        [errorView.topAnchor constraintEqualToAnchor:contentView.topAnchor
+                                            constant:32.0],
+        [errorView.leadingAnchor constraintEqualToAnchor:contentView.leadingAnchor],
+        [errorView.trailingAnchor constraintEqualToAnchor:contentView.trailingAnchor],
+
+        [closeButton.topAnchor constraintEqualToAnchor:errorView.bottomAnchor
+                                              constant:32.0],
+        [closeButton.centerXAnchor constraintEqualToAnchor:contentView.centerXAnchor],
+        [contentView.bottomAnchor constraintEqualToAnchor:closeButton.bottomAnchor
+                                                 constant:16.0],
+        [closeButton.heightAnchor constraintGreaterThanOrEqualToConstant:44.0],
+    ]];
+}
+
+- (void)closeButtonAction:(UIButton *)sender {
+    [self dismissViewControllerAnimated:YES completion:nil];
+}
+
+@end