128 lines
4.6 KiB
Swift
128 lines
4.6 KiB
Swift
//
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// TiercelError.swift
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// Tiercel
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//
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// Created by Daniels on 2019/5/14.
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// Copyright © 2019 Daniels. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import Foundation
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public enum TiercelError: Error {
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public enum CacheErrorReason {
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case cannotCreateDirectory(path: String, error: Error)
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case cannotRemoveItem(path: String, error: Error)
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case cannotCopyItem(atPath: String, toPath: String, error: Error)
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case cannotMoveItem(atPath: String, toPath: String, error: Error)
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case cannotRetrieveAllTasks(path: String, error: Error)
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case cannotEncodeTasks(path: String, error: Error)
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case fileDoesnotExist(path: String)
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case readDataFailed(path: String)
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}
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case unknown
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case invalidURL(url: URLConvertible)
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case duplicateURL(url: URLConvertible)
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case indexOutOfRange
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case fetchDownloadTaskFailed(url: URLConvertible)
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case headersMatchFailed
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case fileNamesMatchFailed
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case unacceptableStatusCode(code: Int)
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case cacheError(reason: CacheErrorReason)
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}
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extension TiercelError: LocalizedError {
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public var errorDescription: String? {
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switch self {
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case .unknown:
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return "unkown error"
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case let .invalidURL(url):
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return "URL is not valid: \(url)"
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case let .duplicateURL(url):
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return "URL is duplicate: \(url)"
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case .indexOutOfRange:
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return "index out of range"
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case let .fetchDownloadTaskFailed(url):
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return "did not find downloadTask in sessionManager: \(url)"
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case .headersMatchFailed:
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return "HeaderArray.count != urls.count"
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case .fileNamesMatchFailed:
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return "FileNames.count != urls.count"
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case let .unacceptableStatusCode(code):
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return "Response status code was unacceptable: \(code)"
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case let .cacheError(reason):
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return reason.errorDescription
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}
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}
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}
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extension TiercelError: CustomNSError {
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public static let errorDomain: String = "com.Daniels.Tiercel.Error"
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public var errorCode: Int {
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if case .unacceptableStatusCode = self {
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return 1001
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} else {
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return -1
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}
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}
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public var errorUserInfo: [String: Any] {
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if let errorDescription = errorDescription {
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return [NSLocalizedDescriptionKey: errorDescription]
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} else {
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return [String: Any]()
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}
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}
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}
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extension TiercelError.CacheErrorReason {
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public var errorDescription: String? {
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switch self {
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case let .cannotCreateDirectory(path, error):
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return "can not create directory, path: \(path), underlying: \(error)"
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case let .cannotRemoveItem(path, error):
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return "can not remove item, path: \(path), underlying: \(error)"
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case let .cannotCopyItem(atPath, toPath, error):
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return "can not copy item, atPath: \(atPath), toPath: \(toPath), underlying: \(error)"
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case let .cannotMoveItem(atPath, toPath, error):
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return "can not move item atPath: \(atPath), toPath: \(toPath), underlying: \(error)"
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case let .cannotRetrieveAllTasks(path, error):
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return "can not retrieve all tasks, path: \(path), underlying: \(error)"
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case let .cannotEncodeTasks(path, error):
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return "can not encode tasks, path: \(path), underlying: \(error)"
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case let .fileDoesnotExist(path):
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return "file does not exist, path: \(path)"
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case let .readDataFailed(path):
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return "read data failed, path: \(path)"
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}
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}
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}
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