another.im-ios/ConversationsClassic/Helpers/Const.swift

import Foundation
import UIKit

enum Const {
    // App
    static var appVersion: String {
        let info = Bundle.main.infoDictionary
        let appVersion = info?["CFBundleShortVersionString"] as? String ?? "Unknown"
        let appBuild = info?[kCFBundleVersionKey as String] as? String ?? "Unknown"
        return "v \(appVersion)(\(appBuild))"
    }

    static var appName: String {
        Bundle.main.bundleIdentifier ?? "Conversations Classic iOS"
    }

    // Trusted servers
    enum TrustedServers: String {
        case narayana = "narayana.im"
        case conversations = "conversations.im"
    }

    // Limit for video for sharing
    static let videoDurationLimit = 60.0

    // Grid size for gallery preview (3 in a row)
    static let galleryGridSize = UIScreen.main.bounds.width / 3

    // Size for map preview for location messages
    static let mapPreviewSize = UIScreen.main.bounds.width * 0.5

    // Size for attachment preview
    static let attachmentPreviewSize = UIScreen.main.bounds.width * 0.5

    // MAM request page size
    static let mamRequestPageSize = 50
}

final class FolderWrapper {
    static let shared = FolderWrapper()
    let fileFolder: URL
    private init() {
        // swiftlint:disable:next force_unwrapping
        let documentsURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
        let subdirectoryURL = documentsURL.appendingPathComponent("Downloads")
        if !FileManager.default.fileExists(atPath: subdirectoryURL.path) {
            try? FileManager.default.createDirectory(at: subdirectoryURL, withIntermediateDirectories: true, attributes: nil)
        }
        fileFolder = subdirectoryURL
    }
}