Begin implementing verified link in UserView (IOS-140)

Mastodon/Scene/Share/View/Content/UserView+Configuration.swift

@@ -46,5 +46,18 @@ extension UserView {
             .map { $0 as String? }
             .assign(to: \.authorUsername, on: viewModel)
             .store(in: &disposeBag)
+        
+        user.publisher(for: \.followersCount)
+            .map { Int($0) }
+            .assign(to: \.authorFollowers, on: viewModel)
+            .store(in: &disposeBag)
+        
+        user.publisher(for: \.fields)
+            .map { fields in
+                let firstVerified = fields.first(where: { $0.verifiedAt != nil })
+                return firstVerified?.value
+            }
+            .assign(to: \.authorVerifiedLink, on: viewModel)
+            .store(in: &disposeBag)
     }
 }

MastodonSDK/Sources/MastodonUI/Extension/NSAttributedString+Format.swift

@@ -0,0 +1,16 @@
+// Copyright © 2023 Mastodon gGmbH. All rights reserved.
+
+import Foundation
+
+public extension NSAttributedString {
+    convenience init(format: NSAttributedString, args: NSAttributedString...) {
+        let mutableNSAttributedString = NSMutableAttributedString(attributedString: format)
+
+        args.forEach { attributedString in
+            let range = NSString(string: mutableNSAttributedString.string).range(of: "%@")
+            mutableNSAttributedString.replaceCharacters(in: range, with: attributedString)
+        }
+        
+        self.init(attributedString: mutableNSAttributedString)
+    }
+}

MastodonSDK/Sources/MastodonUI/View/Content/UserView+ViewModel.swift

@@ -10,6 +10,8 @@ import UIKit
 import Combine
 import MetaTextKit
 import MastodonCore
+import MastodonMeta
+import MastodonAsset
 
 extension UserView {
     public final class ViewModel: ObservableObject {
@@ -22,6 +24,8 @@ extension UserView {
         @Published public var authorAvatarImageURL: URL?
         @Published public var authorName: MetaContent?
         @Published public var authorUsername: String?
+        @Published public var authorFollowers: Int?
+        @Published public var authorVerifiedLink: String?
     }
 }
 
@@ -74,5 +78,43 @@ extension UserView.ViewModel {
                 }
             }
             .store(in: &disposeBag)
+        
+        $authorFollowers
+            .sink { count in
+                guard let count = count else {
+                    userView.authorFollowersLabel.text = nil
+                    return
+                }
+                userView.authorFollowersLabel.attributedText = NSAttributedString(
+                    format: NSAttributedString(string: "%@ followers", attributes: [.font: Font.systemFont(ofSize: 15, weight: .regular)]),
+                    args: NSAttributedString(string: count.formatted(), attributes: [.font: Font.systemFont(ofSize: 15, weight: .bold)])
+                )
+            }
+            .store(in: &disposeBag)
+        
+        $authorVerifiedLink
+            .sink { link in
+                userView.authorVerifiedImageView.image = link == nil ? UIImage(systemName: "questionmark.circle") : UIImage(systemName: "checkmark")
+
+                switch link {
+                case let .some(link):
+                    userView.authorVerifiedImageView.tintColor = Asset.Colors.brand.color
+                    userView.authorVerifiedLabel.textColor = Asset.Colors.brand.color
+                    do {
+                        let mastodonContent = MastodonContent(content: link, emojis: [:])
+                        let content = try MastodonMetaContent.convert(document: mastodonContent)
+                        userView.authorVerifiedLabel.configure(content: content)
+                    } catch {
+                        let content = PlaintextMetaContent(string: link)
+                        userView.authorVerifiedLabel.configure(content: content)
+                    }
+                case .none:
+                    userView.authorVerifiedImageView.tintColor = .secondaryLabel
+                    userView.authorVerifiedLabel.configure(content: PlaintextMetaContent(string: "No verified link"))
+                    userView.authorVerifiedLabel.textColor = .secondaryLabel
+                }
+
+            }
+            .store(in: &disposeBag)
     }
 }

MastodonSDK/Sources/MastodonUI/View/Content/UserView.swift

@@ -8,6 +8,8 @@
 import UIKit
 import Combine
 import MetaTextKit
+import MastodonAsset
+import os
 
 public final class UserView: UIView {
     
@@ -38,6 +40,44 @@ public final class UserView: UIView {
     // author username
     public let authorUsernameLabel = MetaLabel(style: .statusUsername)
     
+    public let authorFollowersLabel: UILabel = {
+        let label = UILabel()
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.textColor = .secondaryLabel
+        return label
+    }()
+    
+    public let authorVerifiedLabel: MetaLabel = {
+        let label = MetaLabel(style: .profileFieldValue)
+        label.translatesAutoresizingMaskIntoConstraints = false
+        label.textAttributes = [
+            .font: UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 15, weight: .regular)),
+            .foregroundColor: UIColor.secondaryLabel
+        ]
+        label.linkAttributes = [
+            .font: UIFontMetrics(forTextStyle: .body).scaledFont(for: .systemFont(ofSize: 15, weight: .semibold)),
+            .foregroundColor: Asset.Colors.brand.color
+        ]
+        label.isUserInteractionEnabled = false
+        return label
+    }()
+    
+    public let authorVerifiedImageView: UIImageView = {
+        let imageView = UIImageView()
+        imageView.setContentHuggingPriority(.required, for: .horizontal)
+        imageView.setContentCompressionResistancePriority(.defaultHigh, for: .vertical)
+        imageView.setContentHuggingPriority(.required, for: .vertical)
+        imageView.contentMode = .scaleAspectFit
+        return imageView
+    }()
+    
+    public let verifiedStackView: UIStackView = {
+        let stackView = UIStackView()
+        stackView.axis = .horizontal
+        stackView.alignment = .center
+        return stackView
+    }()
+        
     public func prepareForReuse() {
         disposeBag.removeAll()
         
@@ -82,10 +122,37 @@ extension UserView {
         labelStackView.axis = .vertical
         containerStackView.addArrangedSubview(labelStackView)
         
-        labelStackView.addArrangedSubview(authorNameLabel)
-        labelStackView.addArrangedSubview(authorUsernameLabel)
+        let nameStackView = UIStackView()
+        nameStackView.axis = .horizontal
+        
+        let nameSpacer = UIView()
+        nameSpacer.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
+        
+        nameStackView.addArrangedSubview(authorNameLabel)
+        nameStackView.addArrangedSubview(authorUsernameLabel)
+        nameStackView.addArrangedSubview(nameSpacer)
+        
         authorNameLabel.setContentCompressionResistancePriority(.required - 1, for: .vertical)
+        authorNameLabel.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
+        
         authorUsernameLabel.setContentCompressionResistancePriority(.required - 1, for: .vertical)
+        authorUsernameLabel.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
+        
+        labelStackView.addArrangedSubview(nameStackView)
+        labelStackView.addArrangedSubview(authorFollowersLabel)
+                
+        let verifiedSpacerView = UIView()
+
+        NSLayoutConstraint.activate([
+            authorVerifiedImageView.widthAnchor.constraint(equalToConstant: 15),
+            verifiedSpacerView.widthAnchor.constraint(equalToConstant: 2)
+        ])
+        
+        verifiedStackView.addArrangedSubview(authorVerifiedImageView)
+        verifiedStackView.addArrangedSubview(verifiedSpacerView)
+        verifiedStackView.addArrangedSubview(authorVerifiedLabel)
+    
+        labelStackView.addArrangedSubview(verifiedStackView)
 
         avatarButton.isUserInteractionEnabled = false
         authorNameLabel.isUserInteractionEnabled = false