//
//  KMHeaderFooterObject.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2022/12/27.
//

import Cocoa

class KMHeaderFooterObject: NSObject {
    
    var fontName: String = "Helvetica"
    var fontsize: CGFloat = 12
    var color: NSColor = NSColor.black
    
    var leftMargin: Int = 30
    var rightMargin: Int = 30
    var bottomMargin: Int = 30
    var topMargin: Int = 30
    
    var topLeftString: String = ""
    var topCenterString: String = ""
    var topRightString: String = ""
    var bottomLeftString: String = ""
    var bottomCenterString: String = ""
    var bottomRightString: String = ""
    
    var dateFormatString: String = KMHeaderFooterManager.getdateFormatArray().first!
    var pageFormatString: String = KMHeaderFooterManager.getPageFormats().first!
    var startString: String = "1"

    var name: String = ""
    var tag: String = ""
      
    override init() {
        super.init()
        
        self.name = ""
        self.tag = NSString.tagString()
        
    }
    
    static func parseModel(model: KMHeaderFooterObject, pageCount: Int) -> [String] {
        var topLeftString: String = ""
        if (!model.topLeftString.isEmpty) {
            var string = KMHeaderFooterObject.parsePageFormat(formatString: model.topLeftString, startPage: model.startString, pageCount: "\(pageCount)")
            string = KMHeaderFooterObject.parseDateFormat(formatString: string)
            topLeftString = string
        }
        
        var topCenterString: String = ""
        if (!model.topCenterString.isEmpty) {
            var string = KMHeaderFooterObject.parsePageFormat(formatString: model.topCenterString, startPage: model.startString, pageCount: "\(pageCount)")
            string = KMHeaderFooterObject.parseDateFormat(formatString: string)
            topCenterString = string
        }
        
        var topRightString: String = ""
        if (!model.topRightString.isEmpty) {
            var string = KMHeaderFooterObject.parsePageFormat(formatString: model.topRightString, startPage: model.startString, pageCount: "\(pageCount)")
            string = KMHeaderFooterObject.parseDateFormat(formatString: string)
            topRightString = string
        }
        
        var bottomLeftString: String = ""
        if (!model.bottomLeftString.isEmpty) {
            var string = KMHeaderFooterObject.parsePageFormat(formatString: model.bottomLeftString, startPage: model.startString, pageCount: "\(pageCount)")
            string = KMHeaderFooterObject.parseDateFormat(formatString: string)
            bottomLeftString = string
        }
        var bottomCenterString: String = ""
        if (!model.bottomCenterString.isEmpty) {
            var string = KMHeaderFooterObject.parsePageFormat(formatString: model.bottomCenterString, startPage: model.startString, pageCount: "\(pageCount)")
            string = KMHeaderFooterObject.parseDateFormat(formatString: string)
            bottomCenterString = string
        }
        var bottomRightString: String = ""
        if (!model.bottomRightString.isEmpty) {
            var string = KMHeaderFooterObject.parsePageFormat(formatString: model.bottomRightString, startPage: model.startString, pageCount: "\(pageCount)")
            string = KMHeaderFooterObject.parseDateFormat(formatString: string)
            bottomRightString = string
        }
        
        return [topLeftString, topCenterString, topRightString, bottomLeftString, bottomCenterString, bottomRightString]
    }
    
    class func parsePageFormat(formatString: String, startPage: String, pageCount: String) -> String {
        var result = formatString
        for pageFormat in KMHeaderFooterManager.getPageFormats() {
            let string = "<<\(pageFormat)>>"
            if (result.contains(string)) {
                var tempString = ""
                if (string == "<<1>>") {
                    tempString.append("<<\(startPage)>>")
                } else if (string == "<<1 of n>>") {
                    tempString.append("<<\(startPage)>>")
                    tempString.append(" of \(pageCount)")
                } else if (string == "<<1/n>>") {
                    tempString.append("<<\(startPage)>>")
                    tempString.append("/\(pageCount)")
                } else if (string == "<<Page 1>>") {
                    tempString.append("Page \(startPage)")
                } else if (string == "<<Page 1 of n>>") {
                    tempString.append("Page \(startPage)")
                    tempString.append("of \(pageCount)")
                }
                result = result.replacingOccurrences(of: string, with: tempString)
            }
        }
        
        return result
    }
    
    class func parseDateFormat(formatString: String) -> String {
        var result: String = formatString
        for dateFormat in KMHeaderFooterManager.getdateFormatArray() {
            if (result.contains(dateFormat)) {
                let formatString: String = dateFormat.replacingOccurrences(of: "m", with: "M")
                let replace = "<<\(dateFormat)>>"
                
                let date = Date()
                let dateFormatter = DateFormatter()
                dateFormatter.dateFormat = formatString
                let dateString = dateFormatter.string(from: date)
                result = result.replacingOccurrences(of: replace, with: dateString)
            }
        }
        return result
    }
    
}