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// Copyright (c) 2016-present, Facebook, Inc. All rights reserved. // // You are hereby granted a non-exclusive, worldwide, royalty-free license to use, // copy, modify, and distribute this software in source code or binary form for use // in connection with the web services and APIs provided by Facebook. // // As with any software that integrates with the Facebook platform, your use of // this software is subject to the Facebook Developer Principles and Policies // [http://developers.facebook.com/policy/]. This copyright notice shall be // included in all copies or substantial portions of the software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
import Foundation import FBSDKShareKit
/**
A generic protocol for holding any value that can be represented as a property value in OpenGraph. */ public protocol OpenGraphPropertyValue { /// The bridged OpenGraph raw value. var openGraphPropertyValue: Any { get } }
internal struct OpenGraphPropertyValueConverter { internal static func valueFrom(openGraphObjectValue value: Any) -> OpenGraphPropertyValue? { switch value { case let value as String: return value case let value as NSNumber: return value case let value as NSArray: return value.flatMap { valueFrom(openGraphObjectValue: $0 as Any) } case let value as URL: return value case let value as FBSDKSharePhoto: return Photo(sdkPhoto: value) case let value as FBSDKShareOpenGraphObject: return OpenGraphObject(sdkGraphObject: value) default: print("Recieved unknown OpenGraph value \(value)") return nil } } }
extension NSNumber: OpenGraphPropertyValue { /// The bridged OpenGraph raw value. public var openGraphPropertyValue: Any { return self } }
extension String: OpenGraphPropertyValue { /// The bridged OpenGraph raw value. public var openGraphPropertyValue: Any { return self } }
extension Array: OpenGraphPropertyValue { /// The bridged OpenGraph raw value. public var openGraphPropertyValue: Any { return self .flatMap { $0 as? OpenGraphPropertyValue } .map { $0.openGraphPropertyValue } } }
extension URL: OpenGraphPropertyValue { /// The bridged OpenGraph raw value. public var openGraphPropertyValue: Any { return self } }
extension Photo: OpenGraphPropertyValue { /// The bridged OpenGraph raw value. public var openGraphPropertyValue: Any { return sdkPhotoRepresentation } }
extension OpenGraphObject: OpenGraphPropertyValue { /// The bridged OpenGraph raw value. public var openGraphPropertyValue: Any { return sdkGraphObjectRepresentation } }
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