//
//  KMBatchSelectedFilesView.swift
//  PDF Master
//
//  Created by lizhe on 2023/1/29.
//

import Cocoa
import KMComponentLibrary

typealias KMBatchSelectedFilesViewCompletion = (_ data: [URL]) -> ()
typealias KMBatchSelectedFilesViewAddFilesAction = (_ sender: Any) -> ()
class KMBatchSelectedFilesView: BaseXibView {
    @IBOutlet weak var imageButton: NSButton!
    @IBOutlet weak var titleLabel: NSTextField!
    @IBOutlet weak var subtitleLabel: NSTextField!
    @IBOutlet weak var box: KMBox!
    
    var inputType: KMBatchCollectionViewType?
    var data: [URL] = []
    var dragEnd: KMBatchSelectedFilesViewCompletion?
    var addAction: KMBatchSelectedFilesViewAddFilesAction?
    
    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)

        // Drawing code here.
    }

    override func setup() {
        super.setup()
        
        self.registerForDraggedTypes([NSPasteboard.PasteboardType.string, NSPasteboard.PasteboardType.fileURL]) //支持拖拽
        
        self.titleLabel.textColor = ComponentLibrary.shared.getComponentColorFromKey("colorPicture/empty-textDefault")
        self.titleLabel.font = ComponentLibrary.shared.getFontFromKey("mac/body-m-medium")
        
        self.subtitleLabel.textColor = ComponentLibrary.shared.getComponentColorFromKey("colorPicture/empty-textSecondary")
        self.subtitleLabel.font = ComponentLibrary.shared.getFontFromKey("mac/body-s-regular")
        
        
        self.titleLabel.stringValue = KMLocalizedString("Select Files", comment: "")
        self.subtitleLabel.stringValue = KMLocalizedString("Drop files here or Click “+”. Drag files to reorder as you need.\nYou can also add files or folders via the lower left button.", comment: "")
        
        let title = NSLocalizedString("Drop files here or Click “+”. Drag files to reorder as you need.\nYou can also add files or folders via the lower left button.", comment: "")
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.lineHeightMultiple = 1.32
        paragraphStyle.alignment = .center
        self.subtitleLabel.attributedStringValue = NSMutableAttributedString(string: title, attributes: [NSAttributedString.Key.paragraphStyle: paragraphStyle, .foregroundColor : NSColor.km_init(hex: "#94989C"), NSAttributedString.Key.font: NSFont.SFProTextRegularFont(12)])
        
        self.box.moveCallback = { [unowned self] mouseEntered, mouseBox in
            if mouseEntered {
                self.imageButton.image = NSImage(named: "icon_empty_add_hov")
            } else {
                self.imageButton.image = NSImage(named: "icon_empty_add_norm")
            }
        }
    }
}

protocol KMBatchSelectedFilesViewAction {}
extension KMBatchSelectedFilesView: KMBatchSelectedFilesViewAction {
    @IBAction func selectFilse(_ sender: NSButton) {
        if (self.addAction != nil) {
            self.addAction!(sender)
        }
    }
}

protocol KMBatchSelectedFilesViewDrag {}
extension KMBatchSelectedFilesView: KMBatchSelectedFilesViewDrag {
    
    override func draggingEntered(_ sender: NSDraggingInfo) -> NSDragOperation {
        KMPrint("draggingEntered")
        if self.allowAccept(sender) {
            return .copy
        } else {
            return .move
        }
        
    }
    
    override func draggingUpdated(_ sender: NSDraggingInfo) -> NSDragOperation {
        if self.allowAccept(sender) {
            return .copy
        } else {
            return .move
        }
    }
    
    override func prepareForDragOperation(_ sender: NSDraggingInfo) -> Bool {
        return self.allowAccept(sender)
    }
    
    override func performDragOperation(_ sender: NSDraggingInfo) -> Bool {
        if self.allowAccept(sender) {
            self.endDrag(sender: sender, info: [:])
            return true
        } else {
            return false
        }
    }
    
    override func draggingExited(_ sender: NSDraggingInfo?) {
        KMPrint("draggingExited")
    }
    
    func endDrag(sender: NSDraggingInfo, info: NSDictionary) {
//        CGPoint point = sender.draggedImageLocation;
//        point.y = sender.draggingLocation.y;
//
//        point = [self convertPoint:point fromView:nil];
        KMPrint("endDrag")
        if (self.dragEnd != nil) {
            self.dragEnd!(self.data)
        }
    }
    
    
    func allowAccept(_ sender: NSDraggingInfo) -> Bool {
        var allow = false
        let pasteboard = sender.draggingPasteboard
        if (pasteboard.types?.contains(.fileURL) == true) {
            var array: [URL] = []
            for item in pasteboard.pasteboardItems! {
                let string = item.string(forType: NSPasteboard.PasteboardType.fileURL)!
                let url = NSURL(string: string)
                
                switch self.inputType {
                case .OCR:
                    if (url?.pathExtension?.lowercased() == "pdf") {
                        array.append(url! as URL)
                    }
                case .imageToPDF:
                    if (KMBatchProcessingTableViewModel.supportedImageTypes().contains((url?.pathExtension?.lowercased())!)) {
                        array.append(url! as URL)
                    }
                default:
                    if (url?.pathExtension?.lowercased() == "pdf") {
                        array.append(url! as URL)
                    }
                    KMPrint("无数据")
                }
            }
            if array.count != 0 {
                allow = true
                self.data = array
            }
        }
        return allow
    }
    
    
}