//
//  KMBatchProcessingTableView.swift
//  PDF Master
//
//  Created by lizhe on 2022/11/18.
//

import Cocoa

class KMBatchTableView: NSTableView {
    var mouseDownAction: (() -> Void)?
//    override func mouseDown(with event: NSEvent) {
//        super.mouseDown(with: event)
//        mouseDownAction?()
//    }
}

class KMBatchProcessingTableView: NSView {
    
    @IBOutlet var contentView: NSView!
    @IBOutlet weak var tableView: KMBatchTableView!
    
    var orderClickRow = -1
    
    let tableRowPasteboardType: NSPasteboard.PasteboardType = NSPasteboard.PasteboardType(rawValue: "private.table-row")
    
    lazy var presenter: KMBatchProcessingTableViewPresenter! = KMBatchProcessingTableViewPresenter()
    
    weak var delegate: KMBatchProcessingTableViewDelegate?

    var selectModels: [KMBatchProcessingTableViewModel] = []
    var inputType: KMBatchCollectionViewType = .convertPDF {
        didSet {
            self.reloadData()
        }
    }
    
    var isDrag = false
    /**
      @abstract 外部传入数据
      @param inputData 文件路劲
      */
    var inputData: [URL]! {
        didSet {
            self.presenter.addData(data: inputData)
        }
    }
    
    //内部使用数据
    var data: [KMBatchProcessingTableViewModel]?
    fileprivate var options: KMBatchProcessingTableViewOptions?
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        // Drawing code here.
    }
    
    // MARK: 初始化
    public required init?(coder decoder: NSCoder) {
        super.init(coder: decoder)
        initContentView()
        setup()
    }
    
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        initContentView()
        setup()
    }
    
    private func initContentView() {
        //绑定xib
        let resource = NSNib(nibNamed: String(describing: self.classForCoder.self),
                             bundle: Bundle(for: self.classForCoder.self))!
        resource.instantiate(withOwner: self, topLevelObjects: nil)
        addSubview(contentView)
        contentView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            contentView.topAnchor.constraint(equalTo: topAnchor),
            contentView.leftAnchor.constraint(equalTo: leftAnchor),
            contentView.rightAnchor.constraint(equalTo: rightAnchor),
            contentView.bottomAnchor.constraint(equalTo: bottomAnchor)])
        contentView.updateConstraintsForSubtreeIfNeeded()
    }
    
    func setup() {
        self.tableView.dataSource = self
        self.tableView.delegate = self
//        self.tableView.allowsMultipleSelection = true
        self.tableView.registerForDraggedTypes([NSPasteboard.PasteboardType.string, NSPasteboard.PasteboardType.fileURL, self.tableRowPasteboardType]) //支持拖拽
        self.tableView.setDraggingSourceOperationMask([.copy, .delete], forLocal: false)
        self.tableView.mouseDownAction = { [unowned self] in
            self.cancelAllSelect()
        }
        self.options = .all
        self.presenter.initPresenter(view: self, data: [])
    }
    
    func reloadData() {
        for _ in self.tableView.tableColumns {
            self.tableView.removeTableColumn(self.tableView.tableColumns[0])
        }
        
        if inputType == .imageToPDF {
            self.options = [.number, .name, .dimension, .size, .state]
        } else {
            self.options = [.number, .name, .order, .size, .state]
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.number)) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("  ", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.number.rawValue))
//            column.resizingMask = .userResizingMask
            column.width = 40
            
            self.tableView.addTableColumn(column)
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.name)) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("File Name", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.name.rawValue))
//            column.resizingMask = .userResizingMask
            if self.inputType == .imageToPDF {
                column.width = 220
            } else {
                column.width = self.canShowOrder() ? 180 : 344
            }
            
            self.tableView.addTableColumn(column)
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.order) && self.canShowOrder()) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("Page Range", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.order.rawValue))
            column.resizingMask = .userResizingMask
            column.width = 164
            self.tableView.addTableColumn(column)
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.dimension)) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("Dimension", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.dimension.rawValue))
            column.resizingMask = .userResizingMask
            column.width = 164
            self.tableView.addTableColumn(column)
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.size)) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("Size", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.size.rawValue))
            column.resizingMask = .userResizingMask
            column.width = 88
            self.tableView.addTableColumn(column)
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.state)) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("Status", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.state.rawValue))
            column.headerCell.textColor = NSColor.red
            column.resizingMask = .userResizingMask
            column.width = 56
            self.tableView.addTableColumn(column)
        }
        
        if (options!.contains(KMBatchProcessingTableViewOptions.delete)) {
            let column = NSTableColumn()
            column.headerCell = KMBatchProcessingColumnHeaderCell.init()
            column.title = NSLocalizedString("", comment: "")
            column.identifier = NSUserInterfaceItemIdentifier(String(KMBatchProcessingTableViewOptions.delete.rawValue))
            column.resizingMask = .userResizingMask
            column.width = 30
            self.tableView.addTableColumn(column)
        }
        
        self.tableView.reloadData()
    }
    
    func canShowOrder() -> Bool {
        if (self.inputType == .imageToPDF ||
            self.inputType == .security ||
            self.inputType == .compress) {
            return false
        } else {
            return true
        }
    }
}

extension KMBatchProcessingTableView: NSTableViewDelegate {
    func numberOfRows(in tableView: NSTableView) -> Int {
        return self.data?.count ?? 0
    }
    
    func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
        var cell: KMBatchProcessingTableCell?
        if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.number.rawValue)) {
            cell = KMBatchProcessingNumTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
        } else if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.name.rawValue)) {
            cell = KMBatchProcessingNameTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
        } else if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.order.rawValue)) {
            cell = KMBatchProcessingOrderTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
            if cell != nil {
                (cell as? KMBatchProcessingOrderTableCell)!.cellAction = { [weak self] pageRange in
                    self?.orderClickRow = row
                }
            }
        } else if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.dimension.rawValue)) {
            cell = KMBatchProcessingWidthTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
        } else if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.size.rawValue)) {
            cell = KMBatchProcessingSizeTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
        } else if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.state.rawValue)) {
            cell = KMBatchProcessingStateTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
        } else if (tableColumn?.identifier.rawValue == String(KMBatchProcessingTableViewOptions.delete.rawValue)) {
            cell = KMBatchProcessingDeleteTableCell.init(frame: CGRect(x: 0, y: 0, width: tableColumn!.width, height:tableView.rowHeight))
            cell?.action = { [unowned self] (view) in
                self.presenter.deleteData(model: view.model)
            }
        }
        if(cell != nil) {
            if (self.data!.count > row) {
                let model = self.data![row]
                model.type = self.inputType
                cell!.model = model
            }
        }
        return cell
    }
    
    func tableView(_ tableView: NSTableView, rowViewForRow row: Int) -> NSTableRowView? {
        //悬浮删除
        let tableRowView = KMBatchProcessingTableRowView()
        tableRowView.selectionHighlightStyle = .none
        tableRowView.model = self.data?[row]
        tableRowView.hoverCallback = { [unowned self] (mouseEntered, mouseBox) in
            if data != nil {
                for i in 0...self.data!.count - 1 {
                    let model = self.data![i]
                    if model.hover == true {
                        model.hover = false
                        let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
                        self.tableView.reloadData(forRowIndexes: IndexSet(integer: i), columnIndexes: IndexSet(integer: columnIndex))
                        if self.tableView.rowView(atRow: i, makeIfNecessary: false) is KMBatchProcessingTableRowView {
                            let rowView: KMBatchProcessingTableRowView = self.tableView.rowView(atRow: i, makeIfNecessary: false) as! KMBatchProcessingTableRowView
                            rowView.reloadData()
                        }
                    }
                    
                    if i == row {
                        if mouseEntered {
                            model.hover = true
                        } else {
                            model.hover = false
                        }
                        let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
                        self.tableView.reloadData(forRowIndexes: IndexSet(integer: i), columnIndexes: IndexSet(integer: columnIndex))
                        if self.tableView.rowView(atRow: i, makeIfNecessary: false) is KMBatchProcessingTableRowView {
                            let rowView: KMBatchProcessingTableRowView = self.tableView.rowView(atRow: i, makeIfNecessary: false) as! KMBatchProcessingTableRowView
                            rowView.reloadData()
                        }
                    }
                }
                
            }
        }

        tableRowView.rightMouseCallback = { [unowned self] (view, event) in
//            self.didSelectItem(shouldSelectRow: row)
            DispatchQueue.main.async {
                if self.tableView.rowView(atRow: row, makeIfNecessary: false) != nil {
                    let rowView = self.tableView.rowView(atRow: row, makeIfNecessary: false)
                    self.addRightMenu(view: rowView!, event: event)
                }
            }
        }
        
//        tableRowView.mouseDownCallback = { [unowned self] (mouseEntered, mouseBox) in
//            if self.canSelect(row: row) {
//                for i in 0...self.data!.count - 1 {
//                    let model = self.data![i]
//                    if model.select == true {
//                        model.select = false
//                        let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
//                        self.tableView.reloadData(forRowIndexes: IndexSet(integer: i), columnIndexes: IndexSet(integer: columnIndex))
//                        if self.tableView.rowView(atRow: i, makeIfNecessary: false) is KMBatchProcessingTableRowView {
//                            let rowView: KMBatchProcessingTableRowView = self.tableView.rowView(atRow: i, makeIfNecessary: false) as! KMBatchProcessingTableRowView
//                            rowView.reloadData()
//                        }
//                    }
//                    
//                    if i == row {
//                        if mouseEntered {
//                            model.select = true
//                        } else {
//                            model.select = false
//                        }
//                        let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
//                        self.tableView.reloadData(forRowIndexes: IndexSet(integer: i), columnIndexes: IndexSet(integer: columnIndex))
//                        if self.tableView.rowView(atRow: i, makeIfNecessary: false) is KMBatchProcessingTableRowView {
//                            let rowView: KMBatchProcessingTableRowView = self.tableView.rowView(atRow: i, makeIfNecessary: false) as! KMBatchProcessingTableRowView
//                            rowView.reloadData()
//                        }
//                        self.didSelectItem(shouldSelectRow: i)
//                    }
//                }
//                
//            } else {
//                self.orderClickRow = -1
//            }
//        }
        return tableRowView
    }
    
    func tableView(_ tableView: NSTableView, shouldSelect tableColumn: NSTableColumn?) -> Bool {
        return true
    }
    
    func tableView(_ tableView: NSTableView, didClick tableColumn: NSTableColumn) {
        
    }
    
    
    func tableViewSelectionDidChange(_ notification: Notification) {
        let tableView: NSTableView = notification.object as? NSTableView ?? NSTableView()
        if tableView == self.tableView {
            // 获取所有选中的行索引
            let selectedIndexes = tableView.selectedRowIndexes
            if selectedIndexes.isEmpty {
                print("没有选中任何行")
                self.didSelectItems(indexs: IndexSet())
            } else {
                // 打印所有选中的行索引
                print("选中的行索引: \(selectedIndexes)")
                for index in selectedIndexes {
                    print(index)
                }
                self.didSelectItems(indexs: selectedIndexes)
            }
        }
    }
    
    func tableView(_ tableView: NSTableView, shouldSelectRow row: Int) -> Bool {
        return true
    }
    
    func didSelectItems(indexs: IndexSet) {
        if self.data != nil && !self.isDrag {
            for i in 0..<(self.data?.count ?? 0) {
                let item = self.data?[i]
                if item != nil {
                    if item!.select {
                        item!.select = false
                        self.tableView.reloadData(forRowIndexes: IndexSet(integer: i), columnIndexes: IndexSet())
                        self.reloadRowData(index: i)
                    }
                }
            }

            self.selectModels.removeAll()
            for index in indexs {
                let model = self.data?[index]
                if model != nil {
                    model?.select = true
                    self.selectModels.append(model!)
                    self.tableView.reloadData(forRowIndexes: IndexSet(integer: index), columnIndexes: IndexSet())
                    self.reloadRowData(index: index)
                }
            }
//            self.tableView.reloadData()
        }
    }
    
    func reloadRowData(index: Int) {
        let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
        self.tableView.reloadData(forRowIndexes: IndexSet(integer: index), columnIndexes: IndexSet(integer: columnIndex))
        if self.tableView.rowView(atRow: index, makeIfNecessary: false) is KMBatchProcessingTableRowView {
            let rowView: KMBatchProcessingTableRowView = self.tableView.rowView(atRow: index, makeIfNecessary: false) as! KMBatchProcessingTableRowView
            rowView.reloadData()
        }
    }
    
    func didSelectItem(shouldSelectRow row: Int) {
        self.didSelectItems(indexs: IndexSet(integer: row))
    }
    
    func cancelAllSelect() {
        for i in 0...self.data!.count - 1 {
            let model = self.data![i]
            model.select = false
            model.hover = false
            let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
            self.tableView.reloadData(forRowIndexes: IndexSet(integer: i), columnIndexes: IndexSet(integer: columnIndex))
            if self.tableView.rowView(atRow: i, makeIfNecessary: false) is KMBatchProcessingTableRowView {
                let rowView: KMBatchProcessingTableRowView = self.tableView.rowView(atRow: i, makeIfNecessary: false) as! KMBatchProcessingTableRowView
                rowView.reloadData()
            }
        }
    }
}

extension KMBatchProcessingTableView: NSTableViewDataSource {
    func tableView(_ tableView: NSTableView, heightOfRow row: Int) -> CGFloat {
        if self.inputType == .imageToPDF {
            return 80
        } else {
            return 40
        }
    }
    
//    func tableView(_ tableView: NSTableView, pasteboardWriterForRow row: Int) -> NSPasteboardWriting? {
//        let item: NSPasteboardItem = NSPasteboardItem()
//
//        item.setString(String(row), forType: self.tableRowPasteboardType)
//
//        return item
//    }
    
    func tableView(_ tableView: NSTableView, writeRowsWith rowIndexes: IndexSet, to pboard: NSPasteboard) -> Bool {
        //自定义内部拖拽数据
        let data: Data = try! NSKeyedArchiver.archivedData(withRootObject: rowIndexes, requiringSecureCoding: true)
        pboard.declareTypes([self.tableRowPasteboardType], owner: self)
        pboard.setData(data, forType: self.tableRowPasteboardType)
        return true
    }

    func tableView(_ tableView: NSTableView, validateDrop info: NSDraggingInfo, proposedRow row: Int, proposedDropOperation dropOperation: NSTableView.DropOperation) -> NSDragOperation {
        guard dropOperation == .above else {
            return []
        }
        
        self.isDrag = true
        self.cancelAllSelect()
        if let source = info.draggingSource as? NSTableView, source === tableView {
            tableView.draggingDestinationFeedbackStyle = .gap
        } else {
            tableView.draggingDestinationFeedbackStyle = .regular
        }
        return .move
    }

    func tableView(_ tableView: NSTableView, acceptDrop info: NSDraggingInfo, row: Int, dropOperation: NSTableView.DropOperation) -> Bool {
        var result: Bool = false;
        let pboard: NSPasteboard = info.draggingPasteboard
        if ((pboard.availableType(from: [NSPasteboard.PasteboardType.fileURL])) != nil) {
            //获取url
            var array: [URL] = []
            for item: NSPasteboardItem in pboard.pasteboardItems! {
                let string: String = item.string(forType: NSPasteboard.PasteboardType.fileURL)!
                let url = NSURL(string: string)
                array.append(url! as URL)
            }
            
            //添加url
            self.presenter.insetData(data: array, index: row)
            
            result = true
        } else if ((pboard.availableType(from: [self.tableRowPasteboardType])) != nil) {
            //获取初始数据
            let rowData: Data = pboard.data(forType: self.tableRowPasteboardType)!
            let rowIndexes: NSIndexSet = try!NSKeyedUnarchiver.unarchivedObject(ofClass: NSIndexSet.self, from: rowData)!
            
            if info.draggingSource as? NSTableView == tableView {
                
                //移除物件悬浮状态
                if data != nil {
                    let model = self.data![rowIndexes.firstIndex]
                    model.hover = false
                    let columnIndex = self.tableView.column(withIdentifier: NSUserInterfaceItemIdentifier(KMBatchProcessingTableViewOptions.delete.rawValue.description))
                    self.tableView.reloadData(forRowIndexes: rowIndexes as IndexSet, columnIndexes: IndexSet(integer: columnIndex))
                }
                
                //数据处理
                self.data!.move(with: IndexSet(rowIndexes), to: row)
                /**
                 数据刷新
                 */
                tableView.beginUpdates()
                tableView.reloadData()
                tableView.endUpdates()
//                tableView.beginUpdates()
//                var oldIndexOffset = 0
//                var newIndexOffset = 0
//
//                for oldIndex in rowIndexes {
//                    if oldIndex < row {
//                        tableView.moveRow(at: oldIndex + oldIndexOffset, to: row - 1)
//                        oldIndexOffset -= 1
//                    } else {
//                        tableView.moveRow(at: oldIndex, to: row + newIndexOffset)
//                        newIndexOffset += 1
//                    }
//                }
//                tableView.endUpdates()
            }
            result = true
        }
        self.isDrag = false
        return result
    }
    
    func tableView(_ tableView: NSTableView, draggingSession session: NSDraggingSession, endedAt screenPoint: NSPoint, operation: NSDragOperation) {
        // Handle items dragged to Trash
        tableView.draggingDestinationFeedbackStyle = .none
//        if operation == .delete, let items = session.draggingPasteboard.pasteboardItems {
//            let indexes = items.compactMap{ $0.integer(forType: .tableViewIndex) }
//
//            for index in indexes.reversed() {
//                self.data?.remove(at: index)
//            }
//            tableView.removeRows(at: IndexSet(indexes), withAnimation: .slideUp)
//        }
        DispatchQueue.main.async {
            self.isDrag = false
        }
    }
}

extension KMBatchProcessingTableView: KMBatchProcessingTableViewPresenterDelegate {
    func showData(presenter: KMBatchProcessingTableViewPresenter, data: [KMBatchProcessingTableViewModel]) {
        self.data = data
        self.tableView.reloadData()
        self.delegate?.reloadData(data: data)
    }
}

extension Array {
    mutating func move(from start: Index, to end: Index) {
        guard (0..<count) ~= start, (0...count) ~= end else { return }
        if start == end { return }
        let targetIndex = start < end ? end - 1 : end
        insert(remove(at: start), at: targetIndex)
    }
    
    mutating func move(with indexes: IndexSet, to toIndex: Index) {
        let movingData = indexes.map{ self[$0] }
        let targetIndex = toIndex - indexes.filter{ $0 < toIndex }.count
        for (i, e) in indexes.enumerated() {
            remove(at: e - i)
        }
        insert(contentsOf: movingData, at: targetIndex)
    }
}

protocol KMBatchProcessingTableViewDelegate: NSObject {
    func reloadData(data: [KMBatchProcessingTableViewModel])
}

extension KMBatchProcessingTableView {
    func addRightMenu(view: NSView, event: NSEvent) {
        let menus = NSMenu()
        menus.addItem(withTitle: NSLocalizedString("Show in Finder", comment: ""), action: #selector(showInFinder), target: self)
        menus.addItem(withTitle: NSLocalizedString("Remove", comment: ""), action: #selector(removeItem), target: self)
        
        let point = view.convert(event.locationInWindow, from: nil)
        menus.popUp(positioning: nil, at: point, in: view)
    }
    
    @objc func showInFinder(sender: KMBatchProcessingTableRowView) {
        if self.selectModels.count != 0 {
            for model in self.selectModels {
                if FileManager.default.fileExists(atPath: model.filePath) {
                    NSWorkspace.shared.activateFileViewerSelecting([URL(fileURLWithPath: model.filePath)])
                }
            }
        }
    }
    
    @objc func removeItem(sender: KMBatchProcessingTableRowView) {
        self.presenter.deleteData(models: self.selectModels)
    }
}

extension KMBatchProcessingTableView{
    func canSelect(row: Int) -> Bool {
        guard let data = data else { return false }
        if !self.isDrag && (self.orderClickRow != row && data[row].pageRange == .custom) {
            return true
        } else {
            return false
        }
    }
}