extension AccountsState {
    static func reducer(state: inout AccountsState, action: AccountsAction) {
        switch action {
        case .accountsListUpdated(let accounts):
            state.accounts = accounts

        case .goTo(let navigation):
            state.navigation = navigation

        case .tryAddAccountWithCredentials(let login, let password):
            let account = Account(bareJid: login, pass: password, isActive: true, isTemp: true)
            state.accounts.append(account)

        case .addAccountError(let jid, let reason):
            state.accounts = state.accounts.filter { $0.bareJid != jid }
            state.addAccountError = reason

        default:
            break
        }
    }
}