fix youtube link embeded #39

Author: marty-suzuki

README.md

@@ -18,8 +18,7 @@
 - [x] Tap handleable
 - [x] Clearable image cache
 - [x] Clearable data cache
-- [x] Support Swift2.3
-- [x] Support Swift3
+- [x] Support Swift3.2
 - [x] Support Carthage since 0.10.1
 
 ## Usage
@@ -122,6 +121,8 @@ NoticeObserveKit to your `Cartfile`:
 github "marty-suzuki/URLEmbeddedView"
 ```
 
+In the project settings add $(SDKROOT)/usr/include/libxml2 to the "header search paths" field
+
 ## Use in Objective-C
 
 ```objective-c
@@ -148,7 +149,7 @@ github "marty-suzuki/URLEmbeddedView"
 
 ## Requirements
 
-- Xcode 8.0 or greater
+- Xcode 9 or greater
 - iOS 8.0 or greater
 - [Kanna(鉋)](https://github.com/tid-kijyun/Kanna)
 - UIKit

URLEmbeddedView.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = "URLEmbeddedView"
-  s.version          = "0.10.1"
+  s.version          = "0.10.2"
   s.summary          = "URLEmbeddedView is a view that automatically cache the Open Graph Protocol."
 
 # This description is used to generate tags and improve search results.

URLEmbeddedView/OGData.swift

@@ -56,6 +56,21 @@ public final class OGData: NSManagedObject {
         case .description : pageDescription = content.replacingOccurrences(of: "\n", with: " ")
         }
     }
+
+    func setValue(withYoutubeJson json: [AnyHashable : Any]) {
+        if let title = json["title"] as? String {
+            self.pageTitle = title
+        }
+        if let type = json["type"] as? String {
+            self.pageType = type
+        }
+        if let providerName = json["provider_name"] as? String {
+            self.siteName = providerName
+        }
+        if let image = json["thumbnail_url"] as? String {
+            self.imageUrl = image
+        }
+    }
 
     func save() {
         updateDate = Date()

URLEmbeddedView/OGDataProvider.swift

@@ -91,42 +91,80 @@ public final class OGDataProvider: NSObject {
             }
         }
         ogData.sourceUrl = urlString
-        guard let URL = URL(string: urlString) else {
+        guard let url = URL(string: urlString) else {
             completion?(ogData, NSError(domain: "can not create NSURL with \"\(urlString)\"", code: 9999, userInfo: nil))
             return nil
         }
-        var request = URLRequest(url: URL)
-        request.setValue(Const.userAgent, forHTTPHeaderField: "User-Agent")
-        request.timeoutInterval = 5
-        let uuidString = UUID().uuidString
-        
-        let task = session.dataTask(with: request, completionHandler: { [weak self] data, response, error in
-            let completion = self?.taskContainers[uuidString]?.completion
-            _ = self?.taskContainers.removeValue(forKey: uuidString)
-            
-            if let error = error {
-                completion?(ogData, error)
-                return
+
+        let task: URLSessionDataTask
+        let uuidString: String
+        if url.host?.contains("www.youtube.com") == true {
+            guard
+                let escapedString = urlString.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed),
+                let url = URL(string: "https://www.youtube.com/oembed?url=\(escapedString)")
+            else {
+                completion?(ogData, NSError(domain: "can not create NSURL with \"\(urlString)\"", code: 9999, userInfo: nil))
+                return nil
             }
-            guard let data = data,
-                  let html = Kanna.HTML(html: data, encoding: String.Encoding.utf8),
-                  let header = html.head else {
+            var request = URLRequest(url: url)
+            request.timeoutInterval = 5
+            uuidString = UUID().uuidString
+
+            task = session.dataTask(with: request, completionHandler: { [weak self] data, response, error in
+                let completion = self?.taskContainers[uuidString]?.completion
+                _ = self?.taskContainers.removeValue(forKey: uuidString)
+
+                if let error = error {
+                    completion?(ogData, error)
+                    return
+                }
+                guard
+                    let data = data,
+                    let rawJson = try? JSONSerialization.jsonObject(with: data, options: []),
+                    let json = rawJson as? [AnyHashable : Any]
+                else {
+                    completion?(ogData, nil)
+                    return
+                }
+                ogData.setValue(withYoutubeJson: json)
+                ogData.save()
+
                 completion?(ogData, nil)
-                return
-            }
-            let metaTags = header.xpath(Const.metaTagKey)
-            for metaTag in metaTags {
-                guard let property = metaTag[Const.propertyKey],
-                      let content = metaTag[Const.contentKey]
-                      , property.hasPrefix(Const.propertyPrefix) else {
-                    continue
+            })
+        } else {
+            var request = URLRequest(url: url)
+            request.setValue(Const.userAgent, forHTTPHeaderField: "User-Agent")
+            request.timeoutInterval = 5
+            uuidString = UUID().uuidString
+
+            task = session.dataTask(with: request, completionHandler: { [weak self] data, response, error in
+                let completion = self?.taskContainers[uuidString]?.completion
+                _ = self?.taskContainers.removeValue(forKey: uuidString)
+
+                if let error = error {
+                    completion?(ogData, error)
+                    return
                 }
-                ogData.setValue(property: property, content: content)
-            }
-            ogData.save()
-            
-            completion?(ogData, nil)
-        }) 
+                guard let data = data,
+                      let html = Kanna.HTML(html: data, encoding: String.Encoding.utf8),
+                      let header = html.head else {
+                    completion?(ogData, nil)
+                    return
+                }
+                let metaTags = header.xpath(Const.metaTagKey)
+                for metaTag in metaTags {
+                    guard let property = metaTag[Const.propertyKey],
+                          let content = metaTag[Const.contentKey]
+                          , property.hasPrefix(Const.propertyPrefix) else {
+                        continue
+                    }
+                    ogData.setValue(property: property, content: content)
+                }
+                ogData.save()
+
+                completion?(ogData, nil)
+            })
+        }
         taskContainers[uuidString] = TaskContainer(uuidString: uuidString, task: task, completion: completion)
         task.resume()
         return uuidString