//
//  NCContextMenu.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 10/01/23.
//  Copyright © 2023 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 UIKit
import Alamofire
import NextcloudKit

class NCContextMenu: NSObject {
    let utilityFileSystem = NCUtilityFileSystem()
    let utility = NCUtility()
    let database = NCManageDatabase.shared

    func viewMenu(ocId: String, viewController: UIViewController, image: UIImage?) -> UIMenu {
        guard let metadata = self.database.getMetadataFromOcId(ocId),
              let sceneIdentifier = (viewController.tabBarController as? NCMainTabBarController)?.sceneIdentifier else { return UIMenu() }
        var downloadRequest: DownloadRequest?
        var titleDeleteConfirmFile = NSLocalizedString("_delete_file_", comment: "")
        let metadataMOV = self.database.getMetadataLivePhoto(metadata: metadata)
        let hud = NCHud(viewController.view)

        if metadata.directory { titleDeleteConfirmFile = NSLocalizedString("_delete_folder_", comment: "") }

        // MENU ITEMS

        let detail = UIAction(title: NSLocalizedString("_details_", comment: ""),
                              image: utility.loadImage(named: "info.circle")) { _ in
            NCActionCenter.shared.openShare(viewController: viewController, metadata: metadata, page: .activity)
        }

        let favorite = UIAction(title: metadata.favorite ?
                                NSLocalizedString("_remove_favorites_", comment: "") :
                                NSLocalizedString("_add_favorites_", comment: ""),
                                image: utility.loadImage(named: metadata.favorite ? "star.slash" : "star", colors: [NCBrandColor.shared.yellowFavorite])) { _ in
            NCNetworking.shared.favoriteMetadata(metadata) { error in
                if error != .success {
                    NCContentPresenter().showError(error: error)
                }
            }
        }

        let share = UIAction(title: NSLocalizedString("_share_", comment: ""),
                             image: utility.loadImage(named: "square.and.arrow.up") ) { _ in
            if self.utilityFileSystem.fileProviderStorageExists(metadata) {
                NotificationCenter.default.postOnMainThread(name: NCGlobal.shared.notificationCenterDownloadedFile,
                                                            object: nil,
                                                            userInfo: ["ocId": metadata.ocId,
                                                                       "ocIdTransfer": metadata.ocIdTransfer,
                                                                       "session": metadata.session,
                                                                       "selector": NCGlobal.shared.selectorOpenIn,
                                                                       "error": NKError(),
                                                                       "account": metadata.account],
                                                            second: 0.5)
            } else {
                guard let metadata = self.database.setMetadatasSessionInWaitDownload(metadatas: [metadata],
                                                                                     session: NCNetworking.shared.sessionDownload,
                                                                                     selector: NCGlobal.shared.selectorOpenIn,
                                                                                     sceneIdentifier: sceneIdentifier) else { return }

                hud.initHudRing(text: NSLocalizedString("_downloading_", comment: ""), tapToCancelDetailText: true) {
                    if let request = downloadRequest {
                        request.cancel()
                    }
                }

                NCNetworking.shared.download(metadata: metadata, withNotificationProgressTask: false) {
                } requestHandler: { request in
                    downloadRequest = request
                } progressHandler: { progress in
                    hud.progress(progress.fractionCompleted)
                } completion: { afError, error in
                    if error == .success || afError?.isExplicitlyCancelledError ?? false {
                        hud.success()
                    } else {
                        hud.error(text: error.description)
                    }
                }
            }
        }

        let viewInFolder = UIAction(title: NSLocalizedString("_view_in_folder_", comment: ""),
                                    image: utility.loadImage(named: "questionmark.folder")) { _ in
            NCActionCenter.shared.openFileViewInFolder(serverUrl: metadata.serverUrl, fileNameBlink: metadata.fileName, fileNameOpen: nil, sceneIdentifier: sceneIdentifier)
        }

        let livePhotoSave = UIAction(title: NSLocalizedString("_livephoto_save_", comment: ""), image: utility.loadImage(named: "livephoto")) { _ in
            if let metadataMOV = metadataMOV {
                NCNetworking.shared.saveLivePhotoQueue.addOperation(NCOperationSaveLivePhoto(metadata: metadata, metadataMOV: metadataMOV, hudView: viewController.view))
            }
        }

        let modify = UIAction(title: NSLocalizedString("_modify_", comment: ""),
                              image: utility.loadImage(named: "pencil.tip.crop.circle")) { _ in
            if self.utilityFileSystem.fileProviderStorageExists(metadata) {
                NotificationCenter.default.postOnMainThread(name: NCGlobal.shared.notificationCenterDownloadedFile,
                                                            object: nil,
                                                            userInfo: ["ocId": metadata.ocId,
                                                                       "ocIdTransfer": metadata.ocIdTransfer,
                                                                       "session": metadata.session,
                                                                       "selector": NCGlobal.shared.selectorLoadFileQuickLook,
                                                                       "error": NKError(),
                                                                       "account": metadata.account],
                                                            second: 0.5)
            } else {
                guard let metadata = self.database.setMetadatasSessionInWaitDownload(metadatas: [metadata],
                                                                                     session: NCNetworking.shared.sessionDownload,
                                                                                     selector: NCGlobal.shared.selectorLoadFileQuickLook,
                                                                                     sceneIdentifier: sceneIdentifier) else { return }

                hud.initHudRing(text: NSLocalizedString("_downloading_", comment: "")) {
                    if let request = downloadRequest {
                        request.cancel()
                    }
                }

                NCNetworking.shared.download(metadata: metadata, withNotificationProgressTask: false) {
                } requestHandler: { request in
                    downloadRequest = request
                } progressHandler: { progress in
                    hud.progress(progress.fractionCompleted)
                } completion: { afError, error in
                    if error == .success || afError?.isExplicitlyCancelledError ?? false {
                        hud.success()
                    } else {
                        hud.error(text: error.description)
                    }
                }
            }
        }

        let deleteConfirmFile = UIAction(title: titleDeleteConfirmFile,
                                         image: utility.loadImage(named: "trash"), attributes: .destructive) { _ in

            var alertStyle = UIAlertController.Style.actionSheet
            if UIDevice.current.userInterfaceIdiom == .pad {
                alertStyle = .alert
            }
            let alertController = UIAlertController(title: nil, message: nil, preferredStyle: alertStyle)
            alertController.addAction(UIAlertAction(title: NSLocalizedString("_delete_file_", comment: ""), style: .destructive) { _ in
                NCNetworking.shared.deleteMetadatas([metadata], sceneIdentifier: sceneIdentifier)
                NotificationCenter.default.postOnMainThread(name: NCGlobal.shared.notificationCenterReloadDataSource)
            })
            alertController.addAction(UIAlertAction(title: NSLocalizedString("_cancel_", comment: ""), style: .cancel) { _ in })
            viewController.present(alertController, animated: true, completion: nil)
        }

        let deleteConfirmLocal = UIAction(title: NSLocalizedString("_remove_local_file_", comment: ""),
                                          image: utility.loadImage(named: "trash"), attributes: .destructive) { _ in
            Task {
                var ocId: [String] = []
                let error = await NCNetworking.shared.deleteCache(metadata, sceneIdentifier: sceneIdentifier)
                if error == .success {
                    ocId.append(metadata.ocId)
                }
                NotificationCenter.default.postOnMainThread(name: NCGlobal.shared.notificationCenterDeleteFile, userInfo: ["ocId": ocId, "error": error])
            }
        }

        let deleteSubMenu = UIMenu(title: NSLocalizedString("_delete_file_", comment: ""),
                                   image: utility.loadImage(named: "trash"),
                                   options: .destructive,
                                   children: [deleteConfirmLocal, deleteConfirmFile])

        // ------ MENU -----

        var menu: [UIMenuElement] = []

        if NCNetworking.shared.isOnline {
            if metadata.directory {
                if metadata.isDirectoryE2EE || metadata.e2eEncrypted {
                    menu.append(favorite)
                } else {
                    menu.append(favorite)
                    menu.append(deleteConfirmFile)
                }
                return UIMenu(title: "", children: [detail, UIMenu(title: "", options: .displayInline, children: menu)])
            } else {
                if metadata.lock {
                    menu.append(favorite)
                    if metadata.isDocumentViewableOnly {
                        //
                    } else {
                        menu.append(share)
                        if self.database.getMetadataLivePhoto(metadata: metadata) != nil {
                            menu.append(livePhotoSave)
                        }
                    }
                } else {
                    menu.append(favorite)
                    if metadata.isDocumentViewableOnly {
                        if viewController is NCMedia {
                            menu.append(viewInFolder)
                        }
                    } else {
                        menu.append(share)
                        if self.database.getMetadataLivePhoto(metadata: metadata) != nil {
                            menu.append(livePhotoSave)
                        }

                        if viewController is NCMedia {
                            menu.append(viewInFolder)
                        }

                        // MODIFY WITH QUICK LOOK
                        if metadata.isModifiableWithQuickLook {
                            menu.append(modify)
                        }
                    }
                    if viewController is NCMedia {
                        menu.append(deleteConfirmFile)
                    } else {
                        menu.append(deleteSubMenu)
                    }
                }
                return UIMenu(title: "", children: [detail, UIMenu(title: "", options: .displayInline, children: menu)])
            }
        } else {
            return UIMenu()
        }
    }
}