Swiftgram/Share/ShareRootController.swift

import UIKit
import TelegramUI
import BuildConfig

@objc(ShareRootController)
class ShareRootController: UIViewController {
    private var impl: ShareRootControllerImpl?
    
    override func loadView() {
        super.loadView()
        
        if self.impl == nil {
            let appBundleIdentifier = Bundle.main.bundleIdentifier!
            guard let lastDotRange = appBundleIdentifier.range(of: ".", options: [.backwards]) else {
                return
            }
            
            let baseAppBundleId = String(appBundleIdentifier[..<lastDotRange.lowerBound])
            
            let buildConfig = BuildConfig(baseAppBundleId: baseAppBundleId)
            
            let languagesCategory = "ios"
            
            let appGroupName = "group.\(baseAppBundleId)"
            let maybeAppGroupUrl = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroupName)
            
            guard let appGroupUrl = maybeAppGroupUrl else {
                return
            }
            
            let rootPath = appGroupUrl.path + "/telegram-data"
            
            let deviceSpecificEncryptionParameters = BuildConfig.deviceSpecificEncryptionParameters(rootPath, baseAppBundleId: baseAppBundleId)
            let encryptionParameters: (Data, Data) = (deviceSpecificEncryptionParameters.key, deviceSpecificEncryptionParameters.salt)
            
            let appVersion = (Bundle.main.infoDictionary?["CFBundleShortVersionString"] as? String) ?? "unknown"
            
            self.impl = ShareRootControllerImpl(initializationData: ShareRootControllerInitializationData(appGroupPath: appGroupUrl.path, apiId: buildConfig.apiId, languagesCategory: languagesCategory, encryptionParameters: encryptionParameters, appVersion: appVersion, bundleData: buildConfig.bundleData(withAppToken: nil, signatureDict: nil)), getExtensionContext: { [weak self] in
                return self?.extensionContext
            })
        }
        
        self.impl?.loadView()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.impl?.viewWillAppear()
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.impl?.viewWillDisappear()
    }
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        self.impl?.viewDidLayoutSubviews(view: self.view)
    }
}