//
//  KMPageRangeSelectView.swift
//  PDF Reader Pro
//
//  Created by Niehaoyu on 2024/11/21.
//

import Cocoa
import KMComponentLibrary

@objc protocol KMPageRangeSelectViewDelegate: AnyObject {
    
    @objc optional func kmPageRangeSelectViewDidClickedItem(_ RangeSelectView: KMPageRangeSelectView, _ item: ComponentMenuitemProperty?)
 
    //ComponentSelect中文字编辑回调
    @objc optional func kmPageRangeSelectViewDidSelectTextBeginEditing(_ RangeSelectView: KMPageRangeSelectView, _ view: ComponentSelect?)
    @objc optional func kmPageRangeSelectViewDidSelectTextChange(_ RangeSelectView: KMPageRangeSelectView, _ view: ComponentSelect?)
    @objc optional func kmPageRangeSelectViewDidSelectTextEndEditing(_ RangeSelectView: KMPageRangeSelectView, _ view: ComponentSelect?)
    @objc optional func kmPageRangeSelectViewDidMouseDown(_ RangeSelectView: KMPageRangeSelectView, _ view: ComponentSelect?)
    @objc optional func kmPageRangeSelectViewDidMouseup(_ RangeSelectView: KMPageRangeSelectView, _ view: ComponentSelect?)
 
    
}

class KMPageRangeSelectView: NSView {
    
    var pageSelectView: ComponentSelect = ComponentSelect()
    
    weak open var delegate: KMPageRangeSelectViewDelegate?
    
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)
        
        setUp()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        
        setUp()
    }
    
    func setUp() {
        pageSelectView.frame = self.bounds
        pageSelectView.autoresizingMask = [.width, .height]
        self.addSubview(pageSelectView)
        
        pageSelectView.properties = ComponentSelectProperties(size: .s,
                                                              state: .normal,
                                                              placeholder: KMLocalizedString("e.g. 1,3-5,10"),
                                                              errorText: nil,
                                                              creatable: false,
                                                              text: KMLocalizedString("All Pages"),
                                                              regexString: "0123456789,-")
        pageSelectView.delegate = self
        
        let menuItemString:[String] = [KMLocalizedString("Current Page"),
                                       KMLocalizedString("All Pages"),
                                       KMLocalizedString("Odd Pages Only"),
                                       KMLocalizedString("Even Pages Only"),
                                       KMLocalizedString("e.g. 1,3-5,10")]
        
        var menuItemArr: [ComponentMenuitemProperty] = []
        for language in menuItemString {
            let itemProperty: ComponentMenuitemProperty = ComponentMenuitemProperty(multipleSelect: false,
                                                                                    itemSelected: false,
                                                                                    isDisabled: false,
                                                                                    keyEquivalent: nil,
                                                                                    text: language,
                                                                                    identifier: language)
            
            menuItemArr.append(itemProperty)
        }
        pageSelectView.updateMenuItemsArr(menuItemArr)
        pageSelectView.selectItemAtIndex(0)
        
    }
    
    func reloadData(items:[String]) {
        var menuItemString:[String] = [KMLocalizedString("Current Page"),
                                       KMLocalizedString("All Pages"),
                                       KMLocalizedString("Odd Pages Only"),
                                       KMLocalizedString("Even Pages Only"),
                                       KMLocalizedString("e.g. 1,3-5,10")]
        if items.count != 0 {
            menuItemString = items
        }
        
        var menuItemArr: [ComponentMenuitemProperty] = []
        for language in menuItemString {
            let itemProperty: ComponentMenuitemProperty = ComponentMenuitemProperty(multipleSelect: false,
                                                                                    itemSelected: false,
                                                                                    isDisabled: false,
                                                                                    keyEquivalent: nil,
                                                                                    text: language,
                                                                                    identifier: language)
            
            menuItemArr.append(itemProperty)
        }
        pageSelectView.updateMenuItemsArr(menuItemArr)
        pageSelectView.selectItemAtIndex(0)
    }
    
    //MARK: - Get
    func getSelectedPageString(_ document: CPDFDocument, _ pageIndexs: [Int]) -> String {
        var pages = [Int]()
        
        if pageSelectView.indexOfSelect() == 1 {
            pages = Array(0..<Int(document.pageCount))
        } else if pageSelectView.indexOfSelect() == 2 {
            pages = Array(stride(from: 0, to: Int(document.pageCount), by: 2))
        } else if pageSelectView.indexOfSelect() == 3 {
            pages = Array(stride(from: 1, to: Int(document.pageCount), by: 2))
        } else {
            pages = pageIndexs.map { $0 - 1 }
        }
        
        let pageIndexString = pages.isEmpty ? "" : pages.map { "\($0)" }.joined(separator: ",")
        
        return pageIndexString
    }
    
    //获取页码信息，
    func getSelectedPageIndex(_ document: CPDFDocument) -> ([Int], isCurrentpage: Bool) {
        let pageRangeSelectIndex = pageSelectView.indexOfSelect()
        
        let fileAttribute = KMNFileAttribute()
        fileAttribute.pdfDocument = document
        fileAttribute.password = document.password ?? ""
        
        if pageRangeSelectIndex == 0 {
             
        } else if pageRangeSelectIndex == 1 {
            fileAttribute.bAllPage = true
            fileAttribute.pagesType = .AllPages
        } else if pageRangeSelectIndex == 2 {
            fileAttribute.bAllPage = false
            fileAttribute.pagesType = .OnlyOdd
        } else {
            if(document.pageCount <= 1) {
                fileAttribute.bAllPage = false
                fileAttribute.pagesType = .PagesString
                fileAttribute.pagesString = pageSelectView.properties.text ?? ""
            } else {
                fileAttribute.bAllPage = false
                if(pageRangeSelectIndex == 2) {
                    fileAttribute.pagesType = .OnlyEven
                } else {
                    fileAttribute.bAllPage = false
                    fileAttribute.pagesType = .PagesString
                    fileAttribute.pagesString = pageSelectView.properties.text ?? ""
                }
            }
        }
        
        let pageIndex = fileAttribute.fetchSelectPages()
        return (pageIndex, pageRangeSelectIndex == 0)
    }
    
}

extension KMPageRangeSelectView: ComponentSelectDelegate {
    func componentSelectDidSelect(view: ComponentSelect?, menuItemProperty: ComponentMenuitemProperty?) {
        if menuItemProperty?.identifier == KMLocalizedString("e.g. 1,3-5,10") {
            view?.properties.creatable = true
            view?.properties.text = ""
            view?.reloadData()
            
            DispatchQueue.main.async {
                view?.beginEditing()
            }
        } else {
            view?.properties.creatable = false
            view?.reloadData()
        }
        
        delegate?.kmPageRangeSelectViewDidClickedItem?(self, menuItemProperty)
    }
    
    func componentSelectTextDidBeginEditing(_ view: ComponentSelect) {
        delegate?.kmPageRangeSelectViewDidSelectTextBeginEditing?(self, view)
    }
    
    func componentSelectTextDidChange(_ view: ComponentSelect) {
        delegate?.kmPageRangeSelectViewDidSelectTextChange?(self, view)
    }
    
    func componentSelectTextDidEndEditing(_ view: ComponentSelect, removeUnit text: String?) {
        delegate?.kmPageRangeSelectViewDidSelectTextEndEditing?(self, view)
    }
    
    func componentSelectDidMouseDown(_ view: ComponentSelect, with event: NSEvent) {
        delegate?.kmPageRangeSelectViewDidMouseDown?(self, view)
    }
    
    func componentSelectDidMouseUp(_ view: ComponentSelect, with event: NSEvent) {
        delegate?.kmPageRangeSelectViewDidMouseup?(self, view)
    }
}