Use font from context and store it in pill data

Riot/Modules/Pills/PillTextAttachmentData.swift

@@ -15,10 +15,12 @@
 //
 
 import Foundation
+import UIKit
 
 /// Data associated with a Pill text attachment.
 @available (iOS 15.0, *)
 struct PillTextAttachmentData: Codable {
+    // MARK: - Properties
     /// Matrix item identifier (user id or room id)
     var matrixItemId: String
     /// Matrix item display name (user or room display name)
@@ -29,6 +31,8 @@ struct PillTextAttachmentData: Codable {
     var isHighlighted: Bool
     /// Alpha for pill display
     var alpha: CGFloat
+    /// Font for the display name
+    var font: UIFont
 
     /// Helper for preferred text to display.
     var displayText: String {
@@ -39,4 +43,68 @@ struct PillTextAttachmentData: Codable {
 
         return displayName
     }
+
+    // MARK: - Init
+    /// Init.
+    ///
+    /// - Parameters:
+    ///   - matrixItemId: Matrix item identifier (user id or room id)
+    ///   - displayName: Matrix item display name (user or room display name)
+    ///   - avatarUrl: Matrix item avatar URL (user or room avatar url)
+    ///   - isHighlighted: Wether the pill should be highlighted
+    ///   - alpha: Alpha for pill display
+    ///   - font: Font for the display name
+    init(matrixItemId: String,
+         displayName: String?,
+         avatarUrl: String?,
+         isHighlighted: Bool,
+         alpha: CGFloat,
+         font: UIFont) {
+        self.matrixItemId = matrixItemId
+        self.displayName = displayName
+        self.avatarUrl = avatarUrl
+        self.isHighlighted = isHighlighted
+        self.alpha = alpha
+        self.font = font
+    }
+
+    // MARK: - Codable
+    enum CodingKeys: String, CodingKey {
+        case matrixItemId
+        case displayName
+        case avatarUrl
+        case isHighlighted
+        case alpha
+        case font
+    }
+
+    enum PillTextAttachmentDataError: Error {
+        case noFontData
+    }
+
+    init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        matrixItemId = try container.decode(String.self, forKey: .matrixItemId)
+        displayName = try? container.decode(String.self, forKey: .displayName)
+        avatarUrl = try? container.decode(String.self, forKey: .avatarUrl)
+        isHighlighted = try container.decode(Bool.self, forKey: .isHighlighted)
+        alpha = try container.decode(CGFloat.self, forKey: .alpha)
+        let fontData = try container.decode(Data.self, forKey: .font)
+        if let font = try NSKeyedUnarchiver.unarchivedObject(ofClass: UIFont.self, from: fontData) {
+            self.font = font
+        } else {
+            throw PillTextAttachmentDataError.noFontData
+        }
+    }
+
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(matrixItemId, forKey: .matrixItemId)
+        try? container.encode(displayName, forKey: .displayName)
+        try? container.encode(avatarUrl, forKey: .avatarUrl)
+        try container.encode(isHighlighted, forKey: .isHighlighted)
+        try container.encode(alpha, forKey: .alpha)
+        let fontData = try NSKeyedArchiver.archivedData(withRootObject: font, requiringSecureCoding: false)
+        try container.encode(fontData, forKey: .font)
+    }
 }