libr-ios/libxShareExt/ShareViewController.swift

//
//  ShareViewController.swift
//  libxShareExt
//
//  Created by Yunlong Zheng on 15/10/30.
//  Copyright © 2015年 librx. All rights reserved.
//

import UIKit
import Social
import MobileCoreServices
import Toast

class ShareViewController: SLComposeServiceViewController, SizeDelegate {

    private var shareUrlString: String?

    var selectedText = "网页" {
        didSet {
            self.config?.value = self.selectedText
        }
    }
    weak var config : SLComposeSheetConfigurationItem?
    
    lazy var sharedDefaults: NSUserDefaults? = {
        return NSUserDefaults(suiteName: "group.libr.app")
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Dark)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.frame = self.view.bounds
        blurEffectView.alpha = 0.6
        
        //self.view.addSubview(blurEffectView)
        
        for item: AnyObject in self.extensionContext!.inputItems {
            let inputItem = item as! NSExtensionItem
            for provider: AnyObject in inputItem.attachments! {
                
                let itemProvider = provider as! NSItemProvider
                if itemProvider.hasItemConformingToTypeIdentifier(kUTTypePropertyList as String) {
                    // You _HAVE_ to call loadItemForTypeIdentifier in order to get the JS injected
                    itemProvider.loadItemForTypeIdentifier(kUTTypePropertyList as String, options: nil, completionHandler: {
                        (list, error) in
                        if let results = list as? NSDictionary {
                            NSOperationQueue.mainQueue().addOperationWithBlock {
                                // We don't actually care about this...
                                self.itemLoadCompletedWithPreprocessingResults(results["NSExtensionJavaScriptPreprocessingResultsKey"] as! NSDictionary)
                            }
                        }
                    })
                }
            
            }
        }
    }
    
    func itemLoadCompletedWithPreprocessingResults(javaScriptPreprocessingResults: NSDictionary) {
        if let urlString = javaScriptPreprocessingResults["baseURI"] as? String {
            self.shareUrlString = urlString
        }
    }

    func doneWithResults(resultsForJavaScriptFinalizeArg: NSDictionary?) {
        
        if let resultsForJavaScriptFinalize = resultsForJavaScriptFinalizeArg {
            
            let identifierType = NSString(format: kUTTypePropertyList, NSUTF8StringEncoding)
            let resultsDictionary = [NSExtensionJavaScriptFinalizeArgumentKey: resultsForJavaScriptFinalize]
            let resultsProvider = NSItemProvider(item: resultsDictionary, typeIdentifier: identifierType as String)
            let resultsItem = NSExtensionItem()
            resultsItem.attachments = [resultsProvider]
            self.extensionContext!.completeRequestReturningItems([resultsItem], completionHandler: nil)
            
        } else {
            // 就算我们没有任何要返回的信息，也要执行这段代码，用于告知我们的Action扩展已经完成了逻辑处理。
            self.extensionContext!.completeRequestReturningItems(nil, completionHandler: nil)
        }
    }
    
    
    override func isContentValid() -> Bool {
        // Do validation of contentText and/or NSExtensionContext attachments here
        return true
    }

    override func didSelectPost() {
        // This is called after the user selects Post. Do the upload of contentText and/or NSExtensionContext attachments.
    
        // Inform the host that we're done, so it un-blocks its UI. Note: Alternatively you could call super's -didSelectPost, which will similarly complete the extension context.
        
        if let _ = sharedDefaults?.stringForKey("accessTokenKey") {
            let shareContent = "\(getShareType(self.selectedText))@\(self.shareUrlString!)"
            print("didSelectPost: \(shareContent)")
            
            var results = sharedDefaults?.objectForKey("ShareContents") as? [String]
            if results != nil {
                results!.append(shareContent)
                sharedDefaults?.setObject(results, forKey: "ShareContents")
            }else{
                let contents = [shareContent]
                sharedDefaults?.setObject(contents, forKey: "ShareContents")
            }
            
            sharedDefaults!.synchronize()
            self.view.makeToast("分享成功", duration:2.0, position: CSToastPositionCenter)
        }else{
             self.view.makeToast("Libr说：‘您还没登录应用~’", duration:3.0, position: CSToastPositionCenter)
        }
        NSTimer.scheduledTimerWithTimeInterval(2.0, target: self, selector: Selector("dismiss"), userInfo: nil, repeats: false)
        
    }
    
    override func configurationItems() -> [AnyObject]! {
            // To add configuration options via table cells at the bottom of the sheet, return an array of SLComposeSheetConfigurationItem here.
            let c = SLComposeSheetConfigurationItem()
            c.title = "分享类型"
            c.value = self.selectedText
            c.tapHandler = {
                [unowned self] in
                let tvc = TableViewController(style: .Grouped)
                tvc.selectedSize = self.selectedText
                tvc.delegate = self
                self.pushConfigurationViewController(tvc)
            }
            self.config = c
            return [c]
    }
    
    func dismiss() {
        self.doneWithResults(nil)
    }
    
    func getShareType(type: String) -> String {
                
        switch (type){
            case "网页": return "page"
            case "文章": return "article"
            default: return "page"
        }
                
    }
 

}