//
//  NCRenameFile.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 26/02/21.
//  Copyright © 2021 Marino Faggiana. All rights reserved.
//
//  Author Marino Faggiana <marino.faggiana@nextcloud.com>
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
//

import Foundation
import NCCommunication

class NCAccountRequest: UIViewController {

    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var tableView: UITableView!
    @IBOutlet weak var progressView: UIProgressView!
    
    public var accounts: [tableAccount] = []
    
    private let appDelegate = UIApplication.shared.delegate as! AppDelegate
    private var timer: Timer?
    private var time: Float = 0
    private let secondsAutoDismiss: Float = 3
    
    // MARK: - Life Cycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        titleLabel.text = NSLocalizedString("_accounts_", comment: "")
        
        tableView.tableFooterView = UIView(frame: CGRect(x: 0, y: 0, width: tableView.frame.size.width, height: 1))

        progressView.tintColor = NCBrandColor.shared.brandElement
        progressView.trackTintColor = .clear
        progressView.progress = 1
        
        NotificationCenter.default.addObserver(self, selector: #selector(startTimer), name: NSNotification.Name(rawValue: NCGlobal.shared.notificationCenterApplicationDidBecomeActive), object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(changeTheming), name: NSNotification.Name(rawValue: NCGlobal.shared.notificationCenterChangeTheming), object: nil)
        
        changeTheming()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
    }
    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        
        timer?.invalidate()
    }
    
    // MARK: - NotificationCenter

    @objc func changeTheming() {
        view.backgroundColor = NCBrandColor.shared.backgroundForm
        tableView.backgroundColor = NCBrandColor.shared.backgroundForm
        tableView.reloadData()
    }

    // MARK: - Progress
    
    @objc func startTimer() {
        time = 0
        timer?.invalidate()
        timer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(updateProgress), userInfo: nil, repeats: true)
    }
    
    @objc func updateProgress() {
        
        time += 0.1
        
        if time >= secondsAutoDismiss {
            dismiss(animated: true)
        } else {
            progressView.progress = 1 - (time / secondsAutoDismiss)
        }
    }
}

extension NCAccountRequest: UITableViewDelegate {
    
    func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
        timer?.invalidate()
        progressView.progress = 0
    }
    
    func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
        if decelerate {
//            startTimer()
        }
    }
    
    func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
//        startTimer()
    }
    
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        
        let account = accounts[indexPath.row]
        if account.account != appDelegate.account {
            NCManageDatabase.shared.setAccountActive(account.account)
            dismiss(animated: true) {
                self.appDelegate.settingAccount(account.account, urlBase: account.urlBase, user: account.user, userId: account.userId, password: CCUtility.getPassword(account.account))
                self.appDelegate.initializeMain()
                self.appDelegate.activeViewController?.viewWillAppear(true)
                self.appDelegate.activeViewController?.viewDidAppear(true)
            }
        } else {
            dismiss(animated: true)
        }
    }
}

extension NCAccountRequest: UITableViewDataSource {
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return accounts.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
       
        let account = accounts[indexPath.row]
        var avatar = UIImage(named: "avatarCredentials")
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
        cell.backgroundColor = NCBrandColor.shared.backgroundForm
       
        let avatarImage = cell.viewWithTag(10) as? UIImageView
        let accountLabel = cell.viewWithTag(20) as? UILabel
        let activeImage = cell.viewWithTag(30) as? UIImageView
        
        avatarImage?.image = UIImage(named: "avatarCredentials")
        avatarImage?.image = UIImage(named: "avatarCredentials")
        
        var fileNamePath = CCUtility.getDirectoryUserData() + "/" + CCUtility.getStringUser(account.user, urlBase: account.urlBase) + "-" + account.user
        fileNamePath = fileNamePath + ".png"

        if var userImage = UIImage(contentsOfFile: fileNamePath) {
            userImage = userImage.resizeImage(size: CGSize(width: 50, height: 50), isAspectRation: true)!
            let userImageView = UIImageView(image: userImage)
            userImageView.avatar(roundness: 2, borderWidth: 1, borderColor: NCBrandColor.shared.avatarBorder, backgroundColor: .clear)
            UIGraphicsBeginImageContext(userImageView.bounds.size)
            userImageView.layer.render(in: UIGraphicsGetCurrentContext()!)
            if let newAvatar = UIGraphicsGetImageFromCurrentImageContext() {
                avatar = newAvatar
            }
            UIGraphicsEndImageContext()
        }
        
        avatarImage?.image = avatar
        accountLabel?.text = account.user + " " + (URL(string: account.urlBase)?.host ?? "")
        if account.active {
            activeImage?.image = UIImage(named: "check")!.imageColor(NCBrandColor.shared.brandText)
        } else {
            activeImage?.image = nil
        }

        return cell
    }
}