//
//  NCCreateFormUploadVoiceNote.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 9/03/2019.
//  Copyright © 2018 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

class NCCreateFormUploadVoiceNote: XLFormViewController, NCSelectDelegate, AVAudioPlayerDelegate {
    
    @IBOutlet weak var buttonPlayStop: UIButton!
    @IBOutlet weak var labelTimer: UILabel!
    @IBOutlet weak var labelDuration: UILabel!
    @IBOutlet weak var progressView: UIProgressView!

    private var serverUrl = ""
    private var titleServerUrl = ""
    private var fileName = ""
    private var fileNamePath = ""
    private var durationPlayer: TimeInterval = 0
    private var counterSecondPlayer: TimeInterval = 0
    
    private var audioPlayer: AVAudioPlayer!
    private var timer = Timer()

    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    
    public func setup(serverUrl: String, fileNamePath: String, fileName: String) {
    
        if serverUrl == CCUtility.getHomeServerUrlActiveUrl(appDelegate.activeUrl) {
            titleServerUrl = "/"
        } else {
            titleServerUrl = (serverUrl as NSString).lastPathComponent
        }
    
        self.fileName = fileName
        self.serverUrl = serverUrl
        self.fileNamePath = fileNamePath
        
        // player
        do {
            try audioPlayer = AVAudioPlayer(contentsOf: URL(fileURLWithPath: fileNamePath))
            audioPlayer.prepareToPlay()
            audioPlayer.delegate = self
            durationPlayer = TimeInterval(audioPlayer.duration)
        } catch {
            buttonPlayStop.isEnabled = false
        }
    }
    
    // MARK: - View Life Cycle

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.navigationItem.leftBarButtonItem = UIBarButtonItem(title: NSLocalizedString("_cancel_", comment: ""), style: UIBarButtonItem.Style.plain, target: self, action: #selector(cancel))
        self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: NSLocalizedString("_save_", comment: ""), style: UIBarButtonItem.Style.plain, target: self, action: #selector(save))
        
        self.tableView.separatorStyle = UITableViewCell.SeparatorStyle.none
        
        // title
        self.title = NSLocalizedString("_voice_memo_title_", comment: "")
        
        // Button Play Stop
        buttonPlayStop.setImage(CCGraphics.changeThemingColorImage(UIImage(named: "audioPlay")!, width: 200, height: 200, color: NCBrandColor.sharedInstance.icon), for: .normal)
        
        // Progress view
        progressView.progress = 0
        progressView.progressTintColor = .green
        progressView.trackTintColor = UIColor(red: 247.0/255.0, green: 247.0/255.0, blue: 247.0/255.0, alpha: 1.0)
        
        // Theming view
        NotificationCenter.default.addObserver(self, selector: #selector(self.changeTheming), name: NSNotification.Name(rawValue: "changeTheming"), object: nil)
        changeTheming()
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        
        updateTimerUI()
    }
    
    @objc func changeTheming() {
        appDelegate.changeTheming(self, tableView: tableView, collectionView: nil, form: true)
        
        labelTimer.textColor = NCBrandColor.sharedInstance.textView
        labelDuration.textColor = NCBrandColor.sharedInstance.textView
        
        initializeForm()
    }
    
    //MARK: XLForm

    func initializeForm() {
        
        let form : XLFormDescriptor = XLFormDescriptor() as XLFormDescriptor
        form.rowNavigationOptions = XLFormRowNavigationOptions.stopDisableRow
        
        var section : XLFormSectionDescriptor
        var row : XLFormRowDescriptor
        
        // Section: Destination Folder
        
        section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_save_path_", comment: "").uppercased())
        form.addFormSection(section)
        
        row = XLFormRowDescriptor(tag: "ButtonDestinationFolder", rowType: XLFormRowDescriptorTypeButton, title: self.titleServerUrl)
        row.action.formSelector = #selector(changeDestinationFolder(_:))
        row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm

        row.cellConfig["imageView.image"] = CCGraphics.changeThemingColorImage(UIImage(named: "folder")!, width: 50, height: 50, color: NCBrandColor.sharedInstance.brandElement) as UIImage
        
        row.cellConfig["textLabel.textAlignment"] = NSTextAlignment.right.rawValue
        row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0)
        row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView
        
        section.addFormRow(row)
        
        // Section: File Name
        
        section = XLFormSectionDescriptor.formSection(withTitle: NSLocalizedString("_filename_", comment: "").uppercased())
        form.addFormSection(section)
        
        row = XLFormRowDescriptor(tag: "fileName", rowType: XLFormRowDescriptorTypeAccount, title: NSLocalizedString("_filename_", comment: ""))
        row.value = self.fileName
        row.cellConfig["backgroundColor"] = NCBrandColor.sharedInstance.backgroundForm

        row.cellConfig["textLabel.font"] = UIFont.systemFont(ofSize: 15.0)
        row.cellConfig["textLabel.textColor"] = NCBrandColor.sharedInstance.textView

        row.cellConfig["textField.textAlignment"] = NSTextAlignment.right.rawValue
        row.cellConfig["textField.font"] = UIFont.systemFont(ofSize: 15.0)
        row.cellConfig["textField.textColor"] = NCBrandColor.sharedInstance.textView
        
        section.addFormRow(row)

        self.form = form
    }
        
    override func formRowDescriptorValueHasChanged(_ formRow: XLFormRowDescriptor!, oldValue: Any!, newValue: Any!) {
        
        super.formRowDescriptorValueHasChanged(formRow, oldValue: oldValue, newValue: newValue)
        
        if formRow.tag == "fileName" {
            
            self.form.delegate = nil
            
            if let fileNameNew = formRow.value {
                self.fileName = CCUtility.removeForbiddenCharactersServer(fileNameNew as? String)
            }
            
            formRow.value = self.fileName
            self.updateFormRow(formRow)
            
            self.form.delegate = self
        }
    }
    
    override func textFieldDidBeginEditing(_ textField: UITextField) {
        
        let cell = textField.formDescriptorCell()
        let tag = cell?.rowDescriptor.tag
        
        if tag == "fileName" {
            CCUtility.selectFileName(from: textField)
        }
    }
    
    //MARK: TableViewDelegate

    override func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
        let header: UITableViewHeaderFooterView = view as! UITableViewHeaderFooterView
        header.textLabel?.font = UIFont.systemFont(ofSize: 13.0)
        header.textLabel?.textColor = .gray
        header.tintColor = NCBrandColor.sharedInstance.backgroundForm
    }
    
    // MARK: - Action
    
    func dismissSelect(serverUrl: String?, metadata: tableMetadata?, type: String) {
        
        if serverUrl != nil {
            
            self.serverUrl = serverUrl!
            
            if serverUrl == CCUtility.getHomeServerUrlActiveUrl(appDelegate.activeUrl) {
                self.titleServerUrl = "/"
            } else {
                self.titleServerUrl = (serverUrl! as NSString).lastPathComponent
            }
            
            // Update
            let row : XLFormRowDescriptor  = self.form.formRow(withTag: "ButtonDestinationFolder")!
            row.title = self.titleServerUrl
            self.updateFormRow(row)
        }
    }
    
    @objc func save() {
        
        self.dismiss(animated: true, completion: {
        
            let rowFileName : XLFormRowDescriptor  = self.form.formRow(withTag: "fileName")!
            guard let name = rowFileName.value else {
                return
            }
            let ext = (name as! NSString).pathExtension.uppercased()
            var fileNameSave = ""
            
            if (ext == "") {
                fileNameSave = name as! String + ".m4a"
            } else if (CCUtility.isDocumentModifiableExtension(ext)) {
                fileNameSave = name as! String
            } else {
                fileNameSave = (name as! NSString).deletingPathExtension + ".m4a"
            }
            
            let metadataForUpload = tableMetadata()
            
            metadataForUpload.account = self.appDelegate.activeAccount
            metadataForUpload.date = NSDate()
            metadataForUpload.ocId = CCUtility.createMetadataID(fromAccount: self.appDelegate.activeAccount, serverUrl: self.serverUrl, fileNameView: fileNameSave, directory: false)
            metadataForUpload.fileName = fileNameSave
            metadataForUpload.fileNameView = fileNameSave
            metadataForUpload.serverUrl = self.serverUrl
            metadataForUpload.session = k_upload_session
            metadataForUpload.sessionSelector = selectorUploadFile
            metadataForUpload.status = Int(k_metadataStatusWaitUpload)
            
            CCUtility.copyFile(atPath: self.fileNamePath, toPath: CCUtility.getDirectoryProviderStorageOcId(metadataForUpload.ocId, fileNameView: fileNameSave))
            
            _ = NCManageDatabase.sharedInstance.addMetadata(metadataForUpload)
            NCMainCommon.sharedInstance.reloadDatasource(ServerUrl: self.serverUrl, ocId: nil, action: Int32(k_action_NULL))

            self.appDelegate.startLoadAutoDownloadUpload()
        })
    }
    
    @objc func cancel() {
        
        try? FileManager.default.removeItem(atPath: fileNamePath)
        self.dismiss(animated: true, completion: nil)
    }
    
    @objc func changeDestinationFolder(_ sender: XLFormRowDescriptor) {
        
        self.deselectFormRow(sender)
        
        let storyboard = UIStoryboard(name: "NCSelect", bundle: nil)
        let navigationController = storyboard.instantiateInitialViewController() as! UINavigationController
        let viewController = navigationController.topViewController as! NCSelect
        
        viewController.delegate = self
        viewController.hideButtonCreateFolder = false
        viewController.includeDirectoryE2EEncryption = true
        viewController.includeImages = false
        viewController.layoutViewSelect = k_layout_view_move
        viewController.selectFile = false
        viewController.titleButtonDone = NSLocalizedString("_select_", comment: "")
        viewController.type = ""
        
        navigationController.modalPresentationStyle = UIModalPresentationStyle.fullScreen
        self.present(navigationController, animated: true, completion: nil)
    }
    
    //MARK: Player - Timer

    func updateTimerUI() {
        labelTimer.text = NCUtility.sharedInstance.formatSecondsToString(counterSecondPlayer)
        labelDuration.text = NCUtility.sharedInstance.formatSecondsToString(durationPlayer)
        progressView.progress = Float(counterSecondPlayer / durationPlayer)
    }
    
    @objc func updateTimer() {
        counterSecondPlayer += 1
        updateTimerUI()
    }
    
    @IBAction func playStop(_ sender: Any) {

        if audioPlayer.isPlaying {
            
            audioPlayer.currentTime = 0.0
            audioPlayer.stop()
            
            timer.invalidate()
            counterSecondPlayer = 0
            progressView.progress = 0
            updateTimerUI()
            
            buttonPlayStop.setImage(CCGraphics.changeThemingColorImage(UIImage(named: "audioPlay")!, width: 200, height: 200, color: NCBrandColor.sharedInstance.icon), for: .normal)
            
        } else {
            
            audioPlayer.prepareToPlay()
            audioPlayer.play()
            
            timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(updateTimer), userInfo: nil, repeats: true)
            
            buttonPlayStop.setImage(CCGraphics.changeThemingColorImage(UIImage(named: "audioStop")!, width: 200, height: 200, color: NCBrandColor.sharedInstance.icon), for: .normal)
        }
    }
    
    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
        
        timer.invalidate()
        counterSecondPlayer = 0
        progressView.progress = 0
        updateTimerUI()
        
        buttonPlayStop.setImage(CCGraphics.changeThemingColorImage(UIImage(named: "audioPlay")!, width: 200, height: 200, color: NCBrandColor.sharedInstance.icon), for: .normal)
    }
}