FirebaseUI_SampleLogin.swift

//
//  MyPageTableViewController.swift
//  Futsal-Kakekomi
//
//  Created by Hiro Fukami on 2019/05/03.
//  Copyright © 2019 Hiro Fukami. All rights reserved.
//

import UIKit
import Firebase
import FirebaseUI

class MyPageTableViewController: UITableViewController, FUIAuthDelegate {

    var authUI: FUIAuth { get { return FUIAuth.defaultAuthUI()!}}
    var handle: AuthStateDidChangeListenerHandle!

    let providers: [FUIAuthProvider] = [
        FUIGoogleAuth(),
        FUIFacebookAuth(),
        // FUITwitterAuth() // 動かなかったので除外
        FUIEmailAuth()
        ]

    // Google ログインと Facebook ログインのフローの結果を処理するハンドラ
    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any]) -> Bool {
        let sourceApplication = options[UIApplication.OpenURLOptionsKey.sourceApplication] as! String?
        if FUIAuth.defaultAuthUI()?.handleOpen(url, sourceApplication: sourceApplication) ?? false {
            return true
        }
        // other URL handling goes here.
        return false
    }

    let sectionTitle: NSArray = ["", "", "", "", ""]
    let array1_login = ["ユーザー名", "募集中", "申込済"]
    let array1_logout = ["ログイン"]
    let array2 = ["ガイド", "お問い合わせ・ご要望"]
    let array3 = ["利用規約", "プライバシーポリシー"]
    var login_status = false {
        didSet {
            tableView.reloadData()
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        self.authUI.delegate = self
        self.authUI.providers = providers
        handle = Auth.auth().addStateDidChangeListener { (auth, user) in
            if user != nil {
                self.login_status = true
            } else {
                self.login_status = false
            }
        }
    }

    //　認証画面から離れたときに呼ばれる（キャンセルボタン押下含む）
    public func authUI(_ authUI: FUIAuth, didSignInWith user: User?, error: Error?){
        // 認証に成功した場合
        if error == nil {
            DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
                let alert = UIAlertController(title: "ログインしました。", message: "", preferredStyle: .alert)
                alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
                self.present(alert, animated: true, completion: nil)
            }
        } else {
            // キャンセルボタンを押されたときは何も出さないようにしたい。
            // DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
            //    let alert = UIAlertController(title: "認証失敗", message: "ログインに失敗しました。申し訳ございませんが、しばらくたってからし再度お試しください。", preferredStyle: .alert)
            //    alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
            //    self.present(alert, animated: true, completion: nil)
            // }
        }
    }

    override func numberOfSections(in tableView: UITableView) -> Int {
        return sectionTitle.count
    }
    // Sectioのタイトル
    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return sectionTitle[section] as? String
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        if section == 0 {
            if login_status {
                return array1_login.count
            } else {
                return array1_logout.count
            }
        }
        else if section == 1 {
            return array2.count
        }
        else if section == 2 {
            if login_status {
                return 1
            } else {
                return 0
            }
        }
        else if section == 3 {
            return array3.count
        }
        else if section == 4 {
            return 1
        }
        else{
            return 0
        }
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)

        switch indexPath.section {
        case 0:
            cell.detailTextLabel!.text = ""
            if login_status {
                cell.textLabel!.text = array1_login[indexPath.row]
                if indexPath.row == 0 {
                    let currentUser = Auth.auth().currentUser!
                    cell.detailTextLabel!.text = currentUser.displayName
                } else {
                    cell.accessoryType = UITableViewCell.AccessoryType.disclosureIndicator
                }
            } else {
                cell.textLabel!.text = array1_logout[indexPath.row]
            }
        case 1:
            cell.textLabel!.text = array2[indexPath.row]
            cell.detailTextLabel!.text = ""
            cell.accessoryType = UITableViewCell.AccessoryType.disclosureIndicator
        case 2:
            if login_status {
                cell.textLabel!.text = "ログアウト"
                cell.textLabel!.textColor = UIColor.blue
            }
            cell.detailTextLabel!.text = ""
        case 3:
            cell.textLabel!.text = array3[indexPath.row]
            cell.detailTextLabel!.text = ""
            cell.accessoryType = UITableViewCell.AccessoryType.disclosureIndicator
        case 4:
            cell.textLabel!.text = "バージョン情報"
            cell.detailTextLabel!.text = "1.0.0"
            cell.selectionStyle = .none
        default:
            cell.textLabel!.text = ""
            cell.detailTextLabel!.text = ""
            cell.selectionStyle = .none
        }
        return cell
    }
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        // ログイン
        if indexPath.section == 0 && indexPath.row == 0 && !login_status {
            let authViewController = self.authUI.authViewController()
            // FirebaseUIのViewの表示
            self.present(authViewController, animated: true, completion: nil)
            tableView.deselectRow(at: indexPath, animated: true)
        // ログアウト
        } else if indexPath.section == 2 && indexPath.row == 0 && login_status {
            do {
                // ログアウト
                try authUI.signOut()

                DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
                    let alert = UIAlertController(title: "ログアウトしました。", message: "", preferredStyle: .alert)
                    alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
                    self.present(alert, animated: true, completion: nil)
                }

            } catch let error as NSError {
                // error
                print(error)
            }
        // 募集中
        } else if indexPath.section == 0 && indexPath.row == 1 && login_status {
            // 対象Rowの非選択処理
            tableView.deselectRow(at: indexPath, animated: true)
            // Segueを使った画面遷移を行う関数
            performSegue(withIdentifier: "eventList", sender: "owner")
        // 申込済
        } else if indexPath.section == 0 && indexPath.row == 2 && login_status {
            tableView.deselectRow(at: indexPath, animated: true)
            performSegue(withIdentifier: "eventList", sender: "entrant")
        } else if indexPath.section == 1 && indexPath.row == 0 {
            tableView.deselectRow(at: indexPath, animated: true)
            performSegue(withIdentifier: "webGuide", sender: nil)
        } else if indexPath.section == 1 && indexPath.row == 1 {
            tableView.deselectRow(at: indexPath, animated: true)
            performSegue(withIdentifier: "webForm", sender: nil)
        } else if indexPath.section == 3 && indexPath.row == 0 {
            tableView.deselectRow(at: indexPath, animated: true)
            performSegue(withIdentifier: "webTerms", sender: nil)
        } else if indexPath.section == 3 && indexPath.row == 1 {
            tableView.deselectRow(at: indexPath, animated: true)
            performSegue(withIdentifier: "webPrivacy", sender: nil)
        }
    }

    // 遷移先のViewControllerにデータを渡す関数
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if sender != nil {
            let vc = segue.destination as! MyPageEventListTableViewController
            vc.queryOrder = sender as? String
        }
    }
}