Remove spaces from folder names.

Shared/ArticleExtractor/ArticleExtractor.swift

@@ -0,0 +1,111 @@
+//
+//  ArticleExtractor.swift
+//  NetNewsWire
+//
+//  Created by Maurice Parker on 9/18/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import Foundation
+import Account
+import Secrets
+
+public enum ArticleExtractorState {
+    case ready
+    case processing
+    case failedToParse
+    case complete
+	case cancelled
+}
+
+protocol ArticleExtractorDelegate {
+    func articleExtractionDidFail(with: Error)
+    func articleExtractionDidComplete(extractedArticle: ExtractedArticle)
+}
+
+class ArticleExtractor {
+	
+	private var dataTask: URLSessionDataTask? = nil
+    
+    var state: ArticleExtractorState!
+    var article: ExtractedArticle?
+    var delegate: ArticleExtractorDelegate?
+	var articleLink: String?
+	
+    private var url: URL!
+    
+    public init?(_ articleLink: String) {
+		self.articleLink = articleLink
+		
+		let clientURL = "https://extract.feedbin.com/parser"
+		let username = SecretKey.mercuryClientID
+		let signature = articleLink.hmacUsingSHA1(key: SecretKey.mercuryClientSecret)
+		
+		if let base64URL = articleLink.data(using: .utf8)?.base64EncodedString() {
+			let fullURL = "\(clientURL)/\(username)/\(signature)?base64_url=\(base64URL)"
+			if let url = URL(string: fullURL) {
+				self.url = url
+				return
+			}
+		}
+		
+		return nil
+    }
+    
+    public func process() {
+        
+        state = .processing
+
+        dataTask = URLSession.shared.dataTask(with: url) { [weak self] data, response, error in
+            
+            guard let self = self else { return }
+            
+            if let error = error {
+                self.state = .failedToParse
+                DispatchQueue.main.async {
+                    self.delegate?.articleExtractionDidFail(with: error)
+                }
+                return
+            }
+            
+            guard let data = data else {
+                self.state = .failedToParse
+                DispatchQueue.main.async {
+					self.delegate?.articleExtractionDidFail(with: URLError(.cannotDecodeContentData))
+                }
+                return
+            }
+ 
+            do {
+				let decoder = JSONDecoder()
+				decoder.dateDecodingStrategy = .iso8601
+				self.article = try decoder.decode(ExtractedArticle.self, from: data)
+				
+                DispatchQueue.main.async {
+					if self.article?.content == nil {
+						self.state = .failedToParse
+						self.delegate?.articleExtractionDidFail(with: URLError(.cannotDecodeContentData))
+					} else {
+						self.state = .complete
+						self.delegate?.articleExtractionDidComplete(extractedArticle: self.article!)
+					}
+                }
+            } catch {
+                self.state = .failedToParse
+                DispatchQueue.main.async {
+                    self.delegate?.articleExtractionDidFail(with: error)
+                }
+            }
+            
+        }
+        
+        dataTask!.resume()
+		
+    }
+	
+	public func cancel() {
+		state = .cancelled
+		dataTask?.cancel()
+	}
+    
+}