Amir Abbas Mousavian
269 lines
14 KiB
Swift
269 lines
14 KiB
Swift
//
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// DropboxHelper.swift
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// FileProvider
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//
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// Created by Amir Abbas Mousavian.
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// Copyright © 2016 Mousavian. Distributed under MIT license.
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//
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import Foundation
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/// Error returned by Dropbox server when trying to access or do operations on a file or folder.
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public struct FileProviderDropboxError: FileProviderHTTPError {
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public let code: FileProviderHTTPErrorCode
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public let path: String
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public let errorDescription: String?
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}
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/// Containts path, url and attributes of a Dropbox file or resource.
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public final class DropboxFileObject: FileObject {
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internal init(name: String, path: String) {
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super.init(url: URL(string: path) ?? URL(string: "/")!, name: name, path: path)
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}
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internal convenience init? (jsonStr: String) {
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guard let json = jsonToDictionary(jsonStr) else { return nil }
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self.init(json: json)
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}
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internal convenience init? (json: [String: AnyObject]) {
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guard let name = json["name"] as? String else { return nil }
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guard let path = json["path_display"] as? String else { return nil }
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self.init(name: name, path: path)
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self.size = (json["size"] as? NSNumber)?.int64Value ?? -1
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self.serverTime = resolve(dateString: json["server_modified"] as? String ?? "")
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self.modifiedDate = resolve(dateString: json["client_modified"] as? String ?? "")
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self.type = (json[".tag"] as? String) == "folder" ? .directory : .regular
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self.isReadOnly = (json["sharing_info"]?["read_only"] as? NSNumber)?.boolValue ?? false
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self.id = json["id"] as? String
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self.rev = json["rev"] as? String
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}
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/// The time contents of file has been modified on server, returns nil if not set
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open internal(set) var serverTime: Date? {
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get {
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return allValues[.serverDate] as? Date
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}
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set {
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allValues[.serverDate] = newValue
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}
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}
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/// The document identifier is a value assigned by the Dropbox to a file.
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/// This value is used to identify the document regardless of where it is moved on a volume.
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/// The identifier persists across system restarts.
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open internal(set) var id: String? {
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get {
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return allValues[.documentIdentifierKey] as? String
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}
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set {
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allValues[.documentIdentifierKey] = newValue
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}
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}
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/// The revision of file, which changes when a file contents are modified.
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/// Changes to attributes or other file metadata do not change the identifier.
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open internal(set) var rev: String? {
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get {
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return allValues[.generationIdentifierKey] as? String
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}
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set {
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allValues[.generationIdentifierKey] = newValue
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}
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}
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}
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// codebeat:disable[ARITY]
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internal extension DropboxFileProvider {
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func list(_ path: String, cursor: String? = nil, prevContents: [DropboxFileObject] = [], recursive: Bool = false, completionHandler: @escaping ((_ contents: [FileObject], _ cursor: String?, _ error: Error?) -> Void)) {
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var requestDictionary = [String: AnyObject]()
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let url: URL
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if let cursor = cursor {
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url = URL(string: "files/list_folder/continue", relativeTo: apiURL)!
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requestDictionary["cursor"] = cursor as NSString?
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} else {
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url = URL(string: "files/list_folder", relativeTo: apiURL)!
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requestDictionary["path"] = correctPath(path) as NSString?
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requestDictionary["recursive"] = recursive as NSNumber?
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}
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var request = URLRequest(url: url)
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request.httpMethod = "POST"
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request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
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request.setValue("application/json", forHTTPHeaderField: "Content-Type")
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request.httpBody = dictionaryToJSON(requestDictionary)?.data(using: .utf8)
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let task = session.dataTask(with: request, completionHandler: { (data, response, error) in
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var responseError: FileProviderDropboxError?
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var files = prevContents
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if let code = (response as? HTTPURLResponse)?.statusCode , code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
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responseError = FileProviderDropboxError(code: rCode, path: path, errorDescription: String(data: data ?? Data(), encoding: .utf8))
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}
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if let data = data, let jsonStr = String(data: data, encoding: .utf8) {
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let json = jsonToDictionary(jsonStr)
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if let entries = json?["entries"] as? [AnyObject] , entries.count > 0 {
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for entry in entries {
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if let entry = entry as? [String: AnyObject], let file = DropboxFileObject(json: entry) {
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files.append(file)
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}
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}
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let ncursor = json?["cursor"] as? String
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let hasmore = (json?["has_more"] as? NSNumber)?.boolValue ?? false
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if hasmore {
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self.list(path, cursor: ncursor, prevContents: files, completionHandler: completionHandler)
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return
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}
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}
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}
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completionHandler(files, nil, responseError ?? error)
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})
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task.taskDescription = FileOperationType.fetch(path: path).json
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task.resume()
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}
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func upload_simple(_ targetPath: String, data: Data, modifiedDate: Date = Date(), overwrite: Bool, operation: FileOperationType, completionHandler: SimpleCompletionHandler) -> OperationHandle? {
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if data.count > 150 * 1024 * 1024 {
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let error = FileProviderDropboxError(code: .payloadTooLarge, path: targetPath, errorDescription: nil)
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completionHandler?(error)
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self.delegateNotify(.create(path: targetPath), error: error)
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return nil
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}
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var requestDictionary = [String: AnyObject]()
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let url: URL
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url = URL(string: "files/upload", relativeTo: contentURL)!
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requestDictionary["path"] = correctPath(targetPath) as NSString?
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requestDictionary["mode"] = (overwrite ? "overwrite" : "add") as NSString
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requestDictionary["client_modified"] = rfc3339utc(of: modifiedDate) as NSString
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var request = URLRequest(url: url)
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request.httpMethod = "POST"
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request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
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request.setValue("application/octet-stream", forHTTPHeaderField: "Content-Type")
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request.setValue(dictionaryToJSON(requestDictionary), forHTTPHeaderField: "Dropbox-API-Arg")
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request.httpBody = data
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let task = session.uploadTask(with: request, from: data, completionHandler: { (data, response, error) in
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var responseError: FileProviderDropboxError?
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if let code = (response as? HTTPURLResponse)?.statusCode , code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
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responseError = FileProviderDropboxError(code: rCode, path: targetPath, errorDescription: String(data: data ?? Data(), encoding: .utf8))
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}
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completionHandler?(responseError ?? error)
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self.delegateNotify(.create(path: targetPath), error: responseError ?? error)
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})
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task.taskDescription = operation.json
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task.resume()
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return RemoteOperationHandle(operationType: operation, tasks: [task])
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}
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func upload_simple(_ targetPath: String, localFile: URL, modifiedDate: Date = Date(), overwrite: Bool, operation: FileOperationType, completionHandler: SimpleCompletionHandler) -> OperationHandle? {
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let size = (try? localFile.resourceValues(forKeys: [.fileSizeKey]))?.fileSize ?? -1
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if size > 150 * 1024 * 1024 {
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let error = FileProviderDropboxError(code: .payloadTooLarge, path: targetPath, errorDescription: nil)
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completionHandler?(error)
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self.delegateNotify(.create(path: targetPath), error: error)
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return nil
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}
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var requestDictionary = [String: AnyObject]()
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let url: URL
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url = URL(string: "files/upload", relativeTo: contentURL)!
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requestDictionary["path"] = correctPath(targetPath) as NSString?
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requestDictionary["mode"] = (overwrite ? "overwrite" : "add") as NSString
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requestDictionary["client_modified"] = rfc3339utc(of: modifiedDate) as NSString
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var request = URLRequest(url: url)
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request.httpMethod = "POST"
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request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
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request.setValue("application/octet-stream", forHTTPHeaderField: "Content-Type")
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request.setValue(dictionaryToJSON(requestDictionary), forHTTPHeaderField: "Dropbox-API-Arg")
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let task = session.uploadTask(with: request, fromFile: localFile, completionHandler: { (data, response, error) in
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var responseError: FileProviderDropboxError?
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if let code = (response as? HTTPURLResponse)?.statusCode , code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
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responseError = FileProviderDropboxError(code: rCode, path: targetPath, errorDescription: String(data: data ?? Data(), encoding: .utf8))
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}
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completionHandler?(responseError ?? error)
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self.delegateNotify(.create(path: targetPath), error: responseError ?? error)
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})
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task.taskDescription = operation.json
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task.resume()
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return RemoteOperationHandle(operationType: operation, tasks: [task])
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}
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func search(_ startPath: String = "", query: String, start: Int = 0, maxResultPerPage: Int = 25, maxResults: Int = -1, foundItem:@escaping ((_ file: DropboxFileObject) -> Void), completionHandler: @escaping ((_ error: Error?) -> Void)) {
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let url = URL(string: "files/search", relativeTo: apiURL)!
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var request = URLRequest(url: url)
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request.httpMethod = "POST"
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request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
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request.setValue("application/json", forHTTPHeaderField: "Content-Type")
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var requestDictionary: [String: AnyObject] = ["path": startPath as NSString]
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requestDictionary["query"] = query as NSString
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requestDictionary["start"] = start as NSNumber
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requestDictionary["max_results"] = maxResultPerPage as NSNumber
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request.httpBody = dictionaryToJSON(requestDictionary)?.data(using: .utf8)
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let task = session.dataTask(with: request, completionHandler: { (data, response, error) in
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var responseError: FileProviderDropboxError?
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if let code = (response as? HTTPURLResponse)?.statusCode , code >= 300, let rCode = FileProviderHTTPErrorCode(rawValue: code) {
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responseError = FileProviderDropboxError(code: rCode, path: startPath, errorDescription: String(data: data ?? Data(), encoding: .utf8))
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}
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if let data = data, let jsonStr = String(data: data, encoding: .utf8) {
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let json = jsonToDictionary(jsonStr)
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if let entries = json?["matches"] as? [AnyObject] , entries.count > 0 {
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for entry in entries {
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if let entry = entry as? [String: AnyObject], let file = DropboxFileObject(json: entry) {
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foundItem(file)
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}
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}
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let rstart = json?["start"] as? Int
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let hasmore = (json?["more"] as? NSNumber)?.boolValue ?? false
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if hasmore, let rstart = rstart {
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self.search(startPath, query: query, start: rstart + entries.count, maxResultPerPage: maxResultPerPage, foundItem: foundItem, completionHandler: completionHandler)
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} else {
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completionHandler(responseError ?? error)
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}
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return
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}
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}
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completionHandler(responseError ?? error)
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})
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task.resume()
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}
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}
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// codebeat:enable[ARITY]
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internal extension DropboxFileProvider {
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static let dateFormatter = DateFormatter()
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static let decimalFormatter = NumberFormatter()
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func mapMediaInfo(_ json: [String: Any]) -> (dictionary: [String: Any], keys: [String]) {
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var dic = [String: Any]()
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var keys = [String]()
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if let dimensions = json["dimensions"] as? [String: Any], let height = dimensions["height"] as? UInt64, let width = dimensions["width"] as? UInt64 {
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keys.append("Dimensions")
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dic["Dimensions"] = "\(width)x\(height)"
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}
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if let location = json["location"] as? [String: Any], let latitude = location["latitude"] as? Double, let longitude = location["longitude"] as? Double {
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DropboxFileProvider.decimalFormatter.numberStyle = .decimal
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DropboxFileProvider.decimalFormatter.maximumFractionDigits = 5
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keys.append("Location")
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let latStr = DropboxFileProvider.decimalFormatter.string(from: NSNumber(value: latitude))
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let longStr = DropboxFileProvider.decimalFormatter.string(from: NSNumber(value: longitude))
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dic["Location"] = "\(latStr), \(longStr)"
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}
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if let timeTakenStr = json["time_taken"] as? String, let timeTaken = resolve(dateString: timeTakenStr) {
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keys.append("Date taken")
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DropboxFileProvider.dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
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dic["Date taken"] = DropboxFileProvider.dateFormatter.string(from: timeTaken)
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}
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if let duration = json["duration"] as? UInt64 {
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keys.append("Duration")
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dic["Duration"] = DropboxFileProvider.formatshort(interval: TimeInterval(duration))
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}
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return (dic, keys)
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}
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func delegateNotify(_ operation: FileOperationType, error: Error?) {
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DispatchQueue.main.async(execute: {
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if error == nil {
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self.delegate?.fileproviderSucceed(self, operation: operation)
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} else {
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self.delegate?.fileproviderFailed(self, operation: operation)
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}
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})
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}
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}
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