SocialServiceBrowser-4.swift

class SocialServiceBrowserDropboxClient: SocialServiceBrowserClient {
    var serviceName: String = "Dropbox"
    
    var filter: SocialServiceBrowserFilterType = .none
    private var client: DropboxClient? {
        return DropboxClientsManager.authorizedClient
    }
    
    func requestRootNode(with completion: @escaping (SocialServiceBrowserResult<SocialServiceBrowerNodeListResponse, Error>) -> Void) -> SocialServiceBrowserOperationPerformable? {
        return client?.files.listFolder(path: "").response(completionHandler: { [weak self] response, error in
            if let error = error {
                completion(SocialServiceBrowserResult.failure(NSError(domain: "SocialServiceBrowserDropboxClientDomain", code: -1, userInfo: [NSLocalizedDescriptionKey: error.description] as [String: Any])))
            } else if let response = response {
                response.filter = self?.filter
                completion(SocialServiceBrowserResult.success(response))
            } else {
                fatalError()
            }
        }).request
    }
    
    func requestChildren(for node: SocialServiceBrowerNode, withCompletion completion: @escaping (SocialServiceBrowserResult<SocialServiceBrowerNodeListResponse, Error>) -> Void) -> SocialServiceBrowserOperationPerformable? {
        return client?.files.listFolder(path: node.path!).response(completionHandler: { [weak self] response, error in
            if let error = error {
                completion(SocialServiceBrowserResult.failure(error))
            } else if let response = response {
                response.filter = self?.filter
                completion(SocialServiceBrowserResult.success(response))
            } else {
                fatalError()
            }
        }).request
    }
}