//
//  NCPickerViewController.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 11/11/2018.
//  Copyright (c) 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
import TLPhotoPicker
import MobileCoreServices

//MARK: - Photo Picker

class NCPhotosPickerViewController: NSObject {

    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    var sourceViewController: UIViewController
    var maxSelectedAssets = 1
    var singleSelectedMode = false

    @discardableResult
    init(viewController: UIViewController, maxSelectedAssets: Int, singleSelectedMode: Bool) {
        sourceViewController = viewController
        super.init()
        
        self.maxSelectedAssets = maxSelectedAssets
        self.singleSelectedMode = singleSelectedMode
        
        self.openPhotosPickerViewController { (assets) in
            guard let assets = assets else { return }
            if assets.count > 0 {
                
                let form = NCCreateFormUploadAssets.init(serverUrl: self.appDelegate.activeServerUrl, assets: assets, cryptated: false, session: NCNetworking.shared.sessionIdentifierBackground, delegate: nil)
                let navigationController = UINavigationController.init(rootViewController: form)
                
                DispatchQueue.main.asyncAfter(deadline: .now() + 0.4) {
                    viewController.present(navigationController, animated: true, completion: nil)
                }
            }
        }
    }
    
    private func openPhotosPickerViewController(completition: @escaping ([PHAsset]?) -> ()) {
        
        var selectedAssets: [PHAsset] = []
        var configure = TLPhotosPickerConfigure()
        
        configure.cancelTitle = NSLocalizedString("_cancel_", comment: "")
        configure.doneTitle = NSLocalizedString("_done_", comment: "")
        configure.emptyMessage = NSLocalizedString("_no_albums_", comment: "")
        configure.tapHereToChange = NSLocalizedString("_tap_here_to_change_", comment: "")
        
        if maxSelectedAssets > 0 {
            configure.maxSelectedAssets = maxSelectedAssets
        }
        configure.selectedColor = NCBrandColor.shared.brandElement
        configure.singleSelectedMode = singleSelectedMode
        
        let viewController = customPhotoPickerViewController(withTLPHAssets: { (assets) in
            
            for asset: TLPHAsset in assets {
                if asset.phAsset != nil {
                    selectedAssets.append(asset.phAsset!)
                }
            }
            
            completition(selectedAssets)
            
        }, didCancel: nil)
        
        viewController.didExceedMaximumNumberOfSelection = { (picker) in
            NCContentPresenter.shared.messageNotification("_info_", description: "_limited_dimension_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError))
        }
        
        viewController.handleNoAlbumPermissions = { (picker) in
            NCContentPresenter.shared.messageNotification("_info_", description: "_denied_album_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError))
        }
        
        viewController.handleNoCameraPermissions = { (picker) in
            NCContentPresenter.shared.messageNotification("_info_", description: "_denied_camera_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError))
        }
        
        viewController.configure = configure

        sourceViewController.present(viewController, animated: true, completion: nil)
    }
}

class customPhotoPickerViewController: TLPhotosPickerViewController {
    
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    override func makeUI() {
        super.makeUI()
        
        self.customNavItem.leftBarButtonItem?.tintColor = NCBrandColor.shared.brandElement
        self.customNavItem.rightBarButtonItem?.tintColor = NCBrandColor.shared.brandElement
    }
}

//MARK: - Document Picker

class NCDocumentPickerViewController: NSObject, UIDocumentPickerDelegate {

    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    
    @discardableResult
    init (tabBarController: UITabBarController) {
        super.init()
          
        let documentProviderMenu = UIDocumentPickerViewController(documentTypes: ["public.data"], in: .import)
        
        documentProviderMenu.modalPresentationStyle = .formSheet
        documentProviderMenu.popoverPresentationController?.sourceView = tabBarController.tabBar
        documentProviderMenu.popoverPresentationController?.sourceRect = tabBarController.tabBar.bounds
        documentProviderMenu.delegate = self
        
        appDelegate.window.rootViewController?.present(documentProviderMenu, animated: true, completion: nil)
    }
    
    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
            
        if controller.documentPickerMode == .import {
            
            let coordinator = NSFileCoordinator.init(filePresenter: nil)

            coordinator.coordinate(readingItemAt: url, options: NSFileCoordinator.ReadingOptions.forUploading, error: nil) { (url) in
                
                let fileName = url.lastPathComponent
                let serverUrl = appDelegate.activeServerUrl!
                let ocId = NSUUID().uuidString
                let data = try? Data.init(contentsOf: url)
                let path = URL(fileURLWithPath: CCUtility.getDirectoryProviderStorageOcId(ocId, fileNameView: fileName)!)
                
                if data != nil {
                    
                    do {
                        try data?.write(to: path)
                        let metadataForUpload = NCManageDatabase.shared.createMetadata(account: appDelegate.account, fileName: fileName, ocId: ocId, serverUrl: serverUrl, urlBase: appDelegate.urlBase, url: "", contentType: "", livePhoto: false)
                        
                        metadataForUpload.session = NCNetworking.shared.sessionIdentifierBackground
                        metadataForUpload.sessionSelector = selectorUploadFile
                        metadataForUpload.size = Double(data?.count ?? 0)
                        metadataForUpload.status = Int(k_metadataStatusWaitUpload)
                        
                        if NCUtility.shared.getMetadataConflict(account: appDelegate.account, serverUrl: serverUrl, fileName: fileName) != nil {
                            
                            if let conflict = UIStoryboard.init(name: "NCCreateFormUploadConflict", bundle: nil).instantiateInitialViewController() as? NCCreateFormUploadConflict {
                                
                                conflict.serverUrl = serverUrl
                                conflict.metadatasUploadInConflict = [metadataForUpload]
                            
                                appDelegate.window.rootViewController?.present(conflict, animated: true, completion: nil)
                            }
                        
                        } else {
                            
                            NCManageDatabase.shared.addMetadata(metadataForUpload)
                            appDelegate.networkingAutoUpload.startProcess()
                        }
                        
                    } catch {
                        NCContentPresenter.shared.messageNotification("_error_", description: "_write_file_error_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError))
                    }
                } else {
                    NCContentPresenter.shared.messageNotification("_error_", description: "_read_file_error_", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError))
                }
            }
        }
    }
}