twitter連携 #swift #CodePiece

CodePiece.swift

import UIKit
import Accounts
import Social

class SNSLinkManager: NSObject {
    
    static func linkTwitterAccount(viewController: UIViewController, completion: @escaping (ACAccount?) -> ()) {
        let accountStore = ACAccountStore()
        let accountType = accountStore.accountType(withAccountTypeIdentifier: ACAccountTypeIdentifierTwitter)
        accountStore.requestAccessToAccounts(with: accountType, options: nil) { (succes, error) in
            if error != nil {
                Logger.d("error::\(String(describing: error))")
                completion(nil)
                return
            }
            guard let accounts = accountStore.accounts(with: accountType) as? [ACAccount] else {
                completion(nil)
                return
            }
            if accounts.count == 0 {
                completion(nil)
            }
            self.showAccountSelectSheet(viewController: viewController, accounts: accounts, completion: { (account) in
                completion(account)
            })
        }
    }
    
    private static func showAccountSelectSheet(viewController: UIViewController, accounts: [ACAccount], completion: @escaping (ACAccount?) -> ()) {
        let alert = UIAlertController(title: "Twitter",
                                      message: "連携するアカウントを選択してください",
                                      preferredStyle: .actionSheet)
        for account in accounts {
            alert.addAction(UIAlertAction(title: account.username, style: .default, handler: { (action) -> Void in
                Logger.d("your select account is \(account)")
                UserDefaultsUtil.setLinkedTwitterAccount(account)
                completion(account)
            }))
        }
        alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { (action) -> Void in
            completion(nil)
        }))
        viewController.present(alert, animated: true, completion: nil)
    }
    
    
    static func postTweet(viewController: UIViewController, account: ACAccount,  message: String) {
        let url = URL(string: "https://api.twitter.com/1.1/statuses/update.json")
        let params = ["status" : message]
        let request = SLRequest(forServiceType: SLServiceTypeTwitter, requestMethod: .POST, url: url, parameters: params)
        request?.account = account
        request?.perform { (responseData, urlResponse, error) -> Void in
            if error != nil {
                Logger.d("error is \(String(describing: error))")
                self.showAlert(viewController: viewController, message: "twitterへの投稿に失敗しました")
            }
            else {
                if let responseData = responseData {
                    do {
                        let result = try JSONSerialization.jsonObject(with: responseData, options: .allowFragments)
                        Logger.d("result is \(result)")
                    } catch {
                        
                    }
                }
            }
        }
    }
    
    
    static func showAlert(viewController: UIViewController, message: String)  {
        let alert = UIAlertController(title: "Error",
                                      message: message,
                                      preferredStyle: .alert)
        viewController.present(alert, animated: true, completion: nil)
    }
}