workavia-mail-front/ios/TwakeMailNSE/Keychain/KeychainController.swift

import Foundation
import KeychainAccess

enum KeychainControllerService: String {
    case sessions
    
    var identifier: String {
        InfoPlistReader.main.baseBundleIdentifier + "." + rawValue
    }
}

class KeychainController: KeychainControllerDelegate {
    private let keychain: Keychain
    
    init(service: KeychainControllerService,
         accessGroup: String) {
        keychain = Keychain(service: service.identifier,
                            accessGroup: accessGroup)
    }
    
    func retrieveSharingSessionFromKeychain(accountId: String) -> KeychainSharingSession? {
        do {
            guard let sessionData = try keychain.getData(accountId) else {
                return nil
            }
            
            return try JSONDecoder().decode(KeychainSharingSession.self, from: sessionData)
        } catch {
            return nil
        }
    }
    
    func retrieveSharingSessions() -> [KeychainCredentials] {
        keychain.allKeys().compactMap { accountId in
            guard let sharingSession = retrieveSharingSessionFromKeychain(accountId: accountId) else {
                return nil
            }

            return KeychainCredentials(accountId: accountId, sharingSession: sharingSession)
        }
    }
    
    func updateEmailStateToKeychain(accountId: String, newState: String) {
        do {
            if let sharingSession = retrieveSharingSessionFromKeychain(accountId: accountId) {
                let newSharingSession = sharingSession.updateEmailState(newState: newState)
                try keychain.set(newSharingSession.toJson() ?? "", key: accountId)
            }
        } catch {}
    }
}