//
//  FileConverter.swift
//  KdanAuto
//
//  Created by 朱东勇 on 2022/12/21.
//

import Foundation
import ComPDFKit_Conversion
import PDFKit

let KMComPDFKit_Conversion_FreeKey = "hw5vIMzKU2Im6cPijLjG45VAHy01ikUF5/GdAMdzCV8n2QTKNN0d8kG8crVbGYjIMsvVP+A9gx5g+W8qEi4ho0YTkGDratHOrX68W7khEBHAv7OEyRxIhlhBmdEQD+21lsRpIEW5zucUAF231lo3ZZiiT2s9CualDQJdAo1G0DI=";
let KMComPDFKit_Conversion_FreeSecret = "mG0c3O3Mzeu5dkZJW3gpqh188cTuhYlGRPrbR/gfX4p9ms/F1zY6gZ1RBu8mNJH8zLwqe9EJswNmwV09TNi2IiIDeG7Ulx+U4pbeFB3/eYl2J6LePb3Kl54OsKlYiaf3Mv7C2jvq4o0q6sQtN3jR4897KG6mIUGJSRuOsvjYroVgMwna6EUx0K0SBmBGoFYDYkwcNWVMyYvggPV2rTFvfawopGIC034QzjthmhwwX90=";

let KMPDFConvertOptionsKeyImageDPI = "KMPDFConvertOptionsKeyImageDPI"
let KMPDFConvertOptionsKeyImageWithAnnotation = "KMPDFConvertOptionsKeyImageWithAnnotation"


let kDefaultPassword = "666666"

class FileConverter : NSObject, CPDFConverterDelegate, CPDFConverterFPDelegate {
    
    var pdfConverter:CPDFConverter?
    var fpConverter:CPDFConverterFP?
    var options:CPDFConvertOptions?
    
    var originSrcPath:String = ""
    var srcPath:String = ""
    var desPath:String = ""
    var pages:[Int] = []
    var pathExtension = ""
    var convertQueue = DispatchQueue.main
    
    var semaphore:DispatchSemaphore? = DispatchSemaphore.init(value: 0)
    var accessSemaphore:DispatchSemaphore? = DispatchSemaphore.init(value: 1)
    var didSuccess:Int = 1
    
    let m_currentVersion = CPDFConvertKit.sharedInstance().buildNumber
    
    var complention = { (status:Int) in
        
    }
    
    static var instance = FileConverter()
    class func shared() -> FileConverter {
        return instance
    }
    
    func converter(_ inSrcPath: String, inDesPath: String, complention:@escaping (_ status:Int) -> ()) {
        return converter(inSrcPath, inDesPath: inDesPath, params: nil, complention: complention)
    }
    
    func converter(_ inSrcPath: String, inDesPath: String, params:NSDictionary?, complention:@escaping (_ status:Int) -> ()) {
        self.complention = complention;
        
        if !FileManager.default.fileExists(atPath: inSrcPath) {
            self.complention(-1)
            
            return
        }
        
        self.originSrcPath = inSrcPath;
        self.srcPath = inSrcPath
        self.desPath = inDesPath
        
        if FileManager.default.fileExists(atPath: desPath) {
            try? FileManager.default.removeItem(atPath: desPath)
        }
        let directory = NSString(string: desPath).deletingLastPathComponent
        if !FileManager.default.fileExists(atPath: directory) {
            try? FileManager.default.createDirectory(atPath: directory, withIntermediateDirectories: true)
        }
        let attributy = try! FileManager.default.attributesOfItem(atPath: srcPath)
        let fileType = attributy[FileAttributeKey.type] as! FileAttributeType
        if NSString(string: FileAttributeType.typeSymbolicLink.rawValue).isEqual(to: fileType.rawValue) {
            let symbolicLink = try? FileManager.default.destinationOfSymbolicLink(atPath: self.srcPath)
            if nil != symbolicLink {
                self.srcPath = symbolicLink!
            }
        }
        
        if FileManager.default.fileExists(atPath: self.desPath) {
            try? FileManager.default.removeItem(atPath: self.desPath)
        }
        
        self.pathExtension = NSString(string: self.desPath).pathExtension
        //        let outputPath = NSString(string: self.desPath).deletingPathExtension
        //        let output = self.desPath
        let password = params?.value(forKey: "password")
        let tParams = params ?? [:]
        let useOldLibValue = params?.value(forKey: "useOldLib")
        
        var useOldLib = false;
        if (nil != useOldLibValue) {
            if ((useOldLibValue as? String) != nil) {
                useOldLib = NSArray(array: ["TRUE", "true", "1"]).contains((useOldLibValue as! String))
            }else if ((useOldLibValue as? NSNumber) != nil) {
                useOldLib = (useOldLibValue as? NSNumber)!.boolValue || (useOldLibValue as? NSNumber)!.intValue == 1
            }
        }
        
//        NSLog("%@ - %@\n\(inSrcPath)", useOldLib ? "老库" : "新库", params ?? "")
        
        self.convertQueue.async {
            let url = URL.init(fileURLWithPath: self.srcPath, isDirectory: false)
            let document = PDFDocument(url: url)
            if document == nil {
                self.didSuccess = -2;
                self.accessSemaphore?.signal()
                return
            }
            let pageCount = document!.pageCount
            
            self.pages = []
            for i in 1...pageCount {
                self.pages.append(i)
            }
            
            if !useOldLib && NSArray(array: ["jpg", "JPG", "png", "PNG"]).contains(self.pathExtension) {
                autoreleasepool {
                    let cachePath = NSString(string: self.desPath).deletingPathExtension+".zip"
                    self.pdfConverter = CPDFConverterImg.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterImg.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertImgOptions()
                    if (NSArray(array: ["jpg", "JPG"]).contains(self.pathExtension)) {
                        (self.options as! CPDFConvertImgOptions).type = .JPEG
                    }else {
                        (self.options as! CPDFConvertImgOptions).type = .PNG
                    }
                    self.configForOptions(self.options, inParams: tParams);
                    do {
                        try? self.pdfConverter?.convert(toFilePath: cachePath, pageIndexs: self.pages, options: self.options)
                    }catch {
                        self.didSuccess = -1;
                        
                        self.complention(self.didSuccess)
                    }
                }
            }else if !useOldLib && NSArray(array: ["ppt", "PPT", "PPTX", "pptx"]).contains(self.pathExtension) {
                autoreleasepool {
                    self.pdfConverter = CPDFConverterPPT.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterPPT.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertPPTOptions()
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: self.desPath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else if !useOldLib && NSArray(array: ["doc", "DOC", "docx", "DOCX"]).contains(self.pathExtension) {
                autoreleasepool {
                    self.pdfConverter = CPDFConverterWord.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterWord.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertWordOptions()
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: self.desPath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else if !useOldLib && NSArray(array: ["xls", "XLS", "xlsx", "XLSX"]).contains(self.pathExtension) {
                autoreleasepool {
                    self.pdfConverter = CPDFConverterExcel.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterExcel.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertExcelOptions()
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: self.desPath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else if !useOldLib && NSArray(array: ["csv", "CSV"]).contains(self.pathExtension) {
                autoreleasepool {
                    let cachePath = NSString(string: self.desPath).deletingPathExtension+".zip"
                    self.pdfConverter = CPDFConverterCsv.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterCsv.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertCsvOptions()
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: cachePath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else if !useOldLib && NSArray(array: ["html", "HTML"]).contains(self.pathExtension) {
                autoreleasepool {
                    let cachePath = NSString(string: self.desPath).deletingPathExtension+".zip"
                    self.pdfConverter = CPDFConverterHtml.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterHtml.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertHtmlOptions()
//                    if ((tParams.value(forKey: "paneOptions") as? NSNumber) != nil) {
//                        (self.options as! CPDFConvertHtmlOptions).paneOptions = CPDFConvertHtmlPageAndNavigationPaneOptions(rawValue: (tParams.value(forKey: "paneOptions") as! NSNumber).intValue)!
//                    }
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: cachePath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else if !useOldLib && NSArray(array: ["rtf", "RTF"]).contains(self.pathExtension) {
                autoreleasepool {
                    self.pdfConverter = CPDFConverterRtf.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterRtf.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertRtfOptions()
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: self.desPath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else if !useOldLib && NSArray(array: ["txt", "TXT"]).contains(self.pathExtension) {
                autoreleasepool {
                    self.pdfConverter = CPDFConverterTxt.init(url: url, password: nil)
                    if (nil == self.pdfConverter && nil != password) {
                        self.pdfConverter = CPDFConverterTxt.init(url: url, password: password as? String)
                    }
                    self.pdfConverter?.delegate = self
                    self.options = CPDFConvertTxtOptions()
                    self.configForOptions(self.options, inParams: tParams);
                    self.pdfConverter?.convert(toFilePath: self.desPath,
                                               pageIndexs: self.pages, options: self.options)
                }
            }else {
                autoreleasepool {
                    if self.fpConverter == nil {
                        self.fpConverter = CPDFConverterFP.init()
                        self.fpConverter?.setDelegate(self)
                    }else {
                        self.fpConverter?.stopConvertsionIfNeed()
                    }
                    
                    var needMerge = NSArray(array: ["csv", "CSV"]).contains(self.pathExtension)
                    let dpi = tParams.value(forKey: "KMPDFConvertOptionsKeyImageDPI")
                    if (needMerge && tParams.value(forKey: "CPDFConvertOptionsKeyAllInOneSheet") != nil) {
                        needMerge = (tParams.value(forKey: "CPDFConvertOptionsKeyAllInOneSheet") as! NSNumber).boolValue
                    }
                    
                    self.fpConverter?.convertPDF(atPath: self.srcPath,
                                                 pdfPassword: password as? String,
                                                 pdfPageIndexs: self.pages,
                                                 destDocType: self.pathExtension,
                                                 destDocPath: self.desPath,
                                                 moreOptions: [
                                                    "KMPDFConvertOptionsKeyImageDPI" : (dpi as? String) ?? "72",
                                                    "CPDFConvertOptionsKeyAllInOneSheet":NSNumber(booleanLiteral: needMerge)
                                                 ])
                }
            }
        }
    }
    
    func converter(_ inSrcPath: String, inDesPath: String) -> Int {
        return converter(inSrcPath, inDesPath: inDesPath, params: nil)
    }
    
    func converter(_ inSrcPath: String, inDesPath: String, params:NSDictionary?) -> Int {
        if !FileManager.default.fileExists(atPath: inSrcPath) {
            return -1
        }
        
        accessSemaphore?.wait()
        
        converter(inSrcPath, inDesPath: inDesPath, params: params) { status in
            self.semaphore?.signal()
        };
        
        semaphore?.wait()
        accessSemaphore?.signal()
        
        return didSuccess
    }
    
    /// CPDFConverterDelegate
    func converter(_ converter: CPDFConverter!, didStartConvert error: Error!) {
        didSuccess = 0;
        
    }
    
    func converter(_ converter: CPDFConverter!, didEndConvert error: Error!) {
        didSuccess = nil == error ? 1 : 0
        
        Thread.sleep(forTimeInterval: 0.1)
        
        autoreleasepool {
            if NSArray(array: ["jpg", "JPG", "png", "PNG", "HTML", "html", "csv", "CSV"]).contains(self.pathExtension) {
                let cachePath = NSString(string: self.desPath).deletingPathExtension+".zip"
                
                let zip = ZipArchive.init()
                
                zip.unzipOpenFile(cachePath)
                zip.unzipFile(to: self.desPath, overWrite: true)
                
                try? FileManager.default.removeItem(atPath: cachePath)
            }
            
            if self.pdfConverter?.isConverting == true {
                self.pdfConverter?.cancel()
            }
            self.pdfConverter?.delegate = nil
            self.pdfConverter = nil
            
            self.complention(didSuccess)
        }
    }
    
    func converter(_ converter: CPDFConverter!, pageIndex index: UInt, pageCount count: UInt) {
        
    }
    
    /// CPDFConverterFPDelegate
    func fppdfConverter(_ converter: Any!, didEndConversion error: Error!) {
        autoreleasepool {
            didSuccess = nil == error ? 1 : 0
            self.fpConverter?.stopConvertsionIfNeed()
            self.fpConverter = nil;
            
            Thread.sleep(forTimeInterval: 0.3)
            
            self.complention(didSuccess)
        }
    }
    
    
    /// Cancel
    func cancelTask() {
        if (self.fpConverter != nil) {
            self.fpConverter!.stopConvertsionIfNeed()
            self.fpConverter = nil;
            
            Thread.sleep(forTimeInterval: 0.3)
        }
        if (self.pdfConverter != nil) {
            self.pdfConverter?.delegate = nil
            if self.pdfConverter?.isConverting == true {
                self.pdfConverter?.cancel()
            }
            
            self.pdfConverter = nil
            
            Thread.sleep(forTimeInterval: 0.3)
            self.complention(didSuccess)
        }
    }
    
    func cancelTaskForSrcPath(_ srcPath:String) {
        if (NSString(string: srcPath).isEqual(to: self.originSrcPath)) {
            cancelTask();
        }
    }
    
    
    // Config Options Tools
    func configForOptions(_ inOptions:CPDFConvertOptions?, inParams:NSDictionary?) {
        // Fetch Options Info
        let params = NSArray(array: (inParams?.value(forKey: "Options") as? [NSDictionary] ?? []))
        
        // options is not empty or nil
        for param in params {
            PerformSelectTool.performSelector(inOptions as Any, params: param as! [AnyHashable : Any]);
        }
    }
    
}