//
//  KMBatchConvertOperation.swift
//  PDF Reader Pro
//
//  Created by liujiajie on 2023/11/28.
//

import Foundation

@objc enum KMConvertWay: Int {
    case KM = 0
    case FP
}

class KMBatchConvertOperation: KMBatchOperation, CPDFConverterDelegate, CPDFConverterFPDelegate{
    lazy var convertWay: KMConvertWay = {
        let way: KMConvertWay?
        if self.operateFile?.convertType == .WordStandard {
            way = .KM
        } else {
            way = .FP
        }
        return way!
    }()
    var fpPDFConverter: CPDFConverterFP?
    var converter: CPDFConverter?
    var pdfDocument: CPDFDocument?
    var isAllInOneSheet: Bool = false
    
    // 是否使用OCR
    var isAllowOCR = false
    var ocrLanguage: COCRLanguage?
    
    deinit {
        
    }
    
    init(file: KMBatchOperateFile, convertType: KMConvertWithPDFType) {
        super.init(file: file)
        self.operateFile?.convertType = convertType
        self.hasExcuting = false
        self.hasFinished = false
//        self.pdfDocument = CPDFDocument(url: URL(fileURLWithPath: file.filePath))
//        if ((self.pdfDocument?.isLocked) != nil) {
//            self.pdfDocument?.unlock(withPassword: file.password)
//        }
    }
    
    override func start() {
        if !self.isCancelled {
            self.pdfDocument = CPDFDocument(url: URL(fileURLWithPath: self.operateFile?.filePath ?? ""))
            if let data = self.pdfDocument?.isLocked, data {
                self.pdfDocument?.unlock(withPassword: self.operateFile?.password)
            }
            willChangeValue(forKey: "isExecuting")
            self.hasExcuting = true
            didChangeValue(forKey: "isExecuting")
            if !FileManager.default.fileExists(atPath: self.operateFile?.filePath ?? "") {
                self.delegate?.fileOperateFailed?(self.operateFile!, error: self.errorWithMsg(KMLocalizedString("File Not Exist")), info: self.operateFile!.removePasswordInfo)
                
                self.willChangeValue(forKey: "isFinished")
                self.hasFinished = true
                self.didChangeValue(forKey: "isFinished")
                return
            }

            if self.pdfDocument == nil {
                self.delegate?.fileOperateFailed?(self.operateFile!, error: self.errorWithMsg(KMLocalizedString("An error occurred while opening this document. The file is damaged and could not be repaired.")), info: self.operateFile!.removeWatermarkInfo)
                self.willChangeValue(forKey: "isFinished")
                self.hasFinished = true
                self.didChangeValue(forKey: "isFinished")
                return
            }

            if !self.pdfDocument!.allowsPrinting || !self.pdfDocument!.allowsCopying {
                self.delegate?.fileOperateFailed?(self.operateFile!, error: self.errorWithMsg(KMLocalizedString("This is a secured document. Editing is not permitted.")), info: self.operateFile!.removeWatermarkInfo)
                self.willChangeValue(forKey: "isFinished")
                self.hasFinished = true
                self.didChangeValue(forKey: "isFinished")
                return
            }
            self.operateFile?.outputFilePath = (self.operateFile?.currentConvertParameter?.fetchDestinationFilepath()) ?? ""
           
            if self.operateFile?.currentConvertParameter?.pagesArray?.count ?? 0 < 1 {
                let error = NSError(domain: "LocalError", code: 0, userInfo: [NSLocalizedDescriptionKey: KMLocalizedString("Invalid page range or the page number is out of range. Please try again.")])
                self.delegate?.fileOperateFailed?(self.operateFile!, error: error, info: self.operateFile!.currentConvertParameter!)
                self.willChangeValue(forKey: "isFinished")
                self.hasFinished = true
                self.didChangeValue(forKey: "isFinished")
                return
            }
            if self.operateFile?.convertType == .WordAdvance || self.operateFile?.convertType == .WordStandard {
                self.converter = CPDFConverterWord.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertWordOptions()
                options.layoutOptions = self.operateFile?.advanceWordParameter.isRetainLayout ?? false ? .retainPageLayout : .retainFlowingText
                options.isContainAnnotations = true
                options.isContainImages = true
                
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    options.isContainOCRBgImage = true
                    options.isAILayoutAnalysis = true
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                } else {
                    options.isContainOCRBgImage = false
                    options.isAILayoutAnalysis = false
                }
                
                self.converter!.convert(toFilePath: operateFile!.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            if self.operateFile?.convertType == .Excel {
                self.converter = CPDFConverterExcel.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertExcelOptions()
                options.isContainAnnotations = true
                options.isContainImages = true
//                options.isContainOCRBgImage = false
                
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    options.isAILayoutAnalysis = true
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                } else {
                    options.isAILayoutAnalysis = false
                }
                
                options.contentOptions = operateFile?.excelParameter.excelContentOption ?? .allContent
                options.worksheetOptions = operateFile?.excelParameter.excelWorksheetOption ?? .forEachPage
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            if self.operateFile?.convertType == .PowerPoint {
                self.converter = CPDFConverterPPT.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertPPTOptions()
                options.isContainAnnotations = true
                options.isContainImages = true
                
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    options.isContainOCRBgImage = true
                    options.isAILayoutAnalysis = true
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                } else {
                    options.isContainOCRBgImage = false
                    options.isAILayoutAnalysis = false
                }
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            if self.operateFile?.convertType == .CSV  && self.operateFile?.CSVParameter.isExtreactTabel ?? false {
                self.converter = CPDFConverterCsv.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertCsvOptions()
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            
            if self.operateFile?.convertType == .RTF {
                self.converter = CPDFConverterRtf.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertRtfOptions()
                options.isContainAnnotations = true
//                options.isAllowOCR = true
                options.isContainImages = true
                
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    options.isContainOCRBgImage = true
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                } else {
                    options.isContainOCRBgImage = false
                }
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            if self.operateFile?.convertType == .HTML {
                self.converter = CPDFConverterHtml.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertHtmlOptions()
                options.isContainAnnotations = true
                options.isContainImages = true
                
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    options.isContainOCRBgImage = true
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                } else {
                    options.isContainOCRBgImage = false
                }
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            if self.operateFile?.convertType == .Text {
                self.converter = CPDFConverterTxt.init(url: URL(fileURLWithPath: operateFile?.filePath ?? ""), password: operateFile?.password)
                self.converter!.delegate = self
                let options = CPDFConvertTxtOptions()
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                }
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            if self.operateFile?.convertType == .Json {
                if let data = self.operateFile?.JSONParameter.isExtreactTabel, data {
                    self.converter = CPDFConverterJsonTable(url:  URL(fileURLWithPath: operateFile?.filePath ?? ""), password: self.operateFile?.password)
                } else {
                    self.converter = CPDFConverterJson(url:  URL(fileURLWithPath: operateFile?.filePath ?? ""), password: self.operateFile?.password)
                }
                self.converter?.delegate = self
                
                let options = CPDFConvertJsonOptions()
                options.isAllowOCR = self.isAllowOCR
                if (self.isAllowOCR) {
                    if let language = self.ocrLanguage {
                        options.language = language
                    } else {
                        options.language = .english
                    }
                } else {

                }
                
                self.converter!.convert(toFilePath: operateFile?.outputFilePath, pageIndexs: operateFile?.currentConvertParameter?.pagesArray, options: options)
                return
            }
            
            
            let op: [String:Any] = [CPDFConvertOptionsKey.imageDPI.rawValue:operateFile?.dpi as Any,CPDFConvertOptionsKey.allInOneSheet.rawValue:(operateFile?.currentConvertParameter?.allInOneSheet ?? false)]
            self.fpPDFConverter = CPDFConverterFP()
            self.fpPDFConverter!.setDelegate(self)
            self.fpPDFConverter?.convertPDF(atPath: operateFile?.filePath, pdfPassword: operateFile?.password, pdfPageIndexs: operateFile?.currentConvertParameter?.pagesArray, destDocType: operateFile?.currentConvertParameter?.extensionString(), destDocPath: operateFile?.outputFilePath, moreOptions:op)
           
        }else {
            willChangeValue(forKey: "isFinished")
            willChangeValue(forKey: "isExecuting")
            hasExcuting = false
            hasFinished = true
            didChangeValue(forKey: "isExecuting")
            didChangeValue(forKey: "isFinished")
        }
    }
    override func cancel() {
//        super.cancel()
        if isExecuting {
            self.fpPDFConverter?.stopConvertsionIfNeed()
            self.operateFile?.currentConvertParameter?.status = .Waiting
            if FileManager.default.fileExists(atPath: (operateFile?.currentConvertParameter?.outPutPath)!) { try? FileManager.default.removeItem(atPath: (operateFile!.currentConvertParameter?.outPutPath)!)
            }
            self.delegate?.fileOperateCanceled?(self.operateFile!, info: self.operateFile!.currentConvertParameter!)
           
           willChangeValue(forKey: "isFinished")
           hasFinished = true
           didChangeValue(forKey: "isFinished")
       } else {
           willChangeValue(forKey: "isCancelled")
           hasCanceled = true
           didChangeValue(forKey: "isCancelled")
       }
    }
    //MARK: FPPDFConverterDelegate
    func fppdfConverter(_ converter: Any!, didStartConversion error: Error!) {
        DispatchQueue.main.async {
            if (error != nil){
                self.delegate?.fileOperateFailed?(self.operateFile!, error: error! as NSError, info: (self.operateFile?.currentConvertParameter!)!)
            }else {
                self.delegate?.fileBeginOperate?(self.operateFile!, info: (self.operateFile?.currentConvertParameter!)!)
            }
        }
    }
    func fppdfConverter(_ converter: Any!, didEndConversion error: Error!) {
//        DispatchQueue.main.async {
            if (error != nil){
                self.delegate?.fileOperateFailed?(self.operateFile!, error: error! as NSError, info: (self.operateFile?.currentConvertParameter!)!)
            }else {
                self.delegate?.fileOperateSuccessed?(self.operateFile!, info: (self.operateFile?.currentConvertParameter!)!)
            }
            self.fpPDFConverter?.setDelegate(nil)
        if self.viewController?.view.window?.isVisible == true {
            willChangeValue(forKey: "isFinished")
            hasFinished = true
            didChangeValue(forKey: "isFinished")
        }
//        }
    }
    func fppdfConverter(_ converter: Any!, pageIndex pageIndexA: UInt, progress: UInt) {
        
    }
    func fppdfConverter(_ converter: Any!, convertPDFPageIndex pdfPageIndexA: UInt, writeWordPageIndex wordPageIndexA: UInt, finshedWordPageCount wordPageCountA: UInt) {
        let totalPages: Int = self.operateFile?.convertInfo?.pagesArray?.count ?? 0
        self.delegate?.fileOperating?(self.operateFile!, progress: CGFloat(wordPageCountA)/CGFloat(totalPages), info: (self.operateFile?.currentConvertParameter!)!)
    }
    //MARK: CPDFConverterDelegate
    func converter(_ converter: CPDFConverter!, didStartConvert error: Error!) {
        DispatchQueue.main.async {
            if (error != nil){
                self.delegate?.fileOperateFailed?(self.operateFile!, error: error! as NSError, info: (self.operateFile?.currentConvertParameter!)!)
            }else {
                self.delegate?.fileBeginOperate?(self.operateFile!, info: (self.operateFile?.currentConvertParameter!)!)
            }
        }
    }
    func converter(_ converter: CPDFConverter!, pageIndex index: UInt, pageCount count: UInt) {
        let totalPages: Int = self.operateFile?.convertInfo?.pagesArray?.count ?? 0
        self.delegate?.fileOperating?(self.operateFile!, progress: CGFloat(index)/CGFloat(totalPages), info: (self.operateFile?.currentConvertParameter!)!)
    }
    func converter(_ converter: CPDFConverter!, didEndConvert error: Error!) {
        if (error != nil){
            var erroeString = ""
            let err: NSError = error! as NSError
            switch err.code {
            case CPDFConverterEncryptError:
                erroeString = KMLocalizedString("Password required or incorrect password. Please re-enter your password and try again")
            case CPDFConverterPermissionError:
                erroeString = KMLocalizedString("The license doesn't allow the permission");
            case CPDFConverterMallocError:
                erroeString = KMLocalizedString("Malloc failure");
            case CPDFConverterUnknownError:
                erroeString = KMLocalizedString("Unknown error in processing conversion. Please try again later");
            case CPDFConverterPDFUnknownError:
                erroeString = KMLocalizedString("Unknown error in processing PDF. Please try again later");
            case CPDFConverterPDFFileError:
                erroeString = KMLocalizedString("File not found or could not be opened. Check if your file exists or choose another file to convert");
            case CPDFConverterPDFFormatError:
                erroeString = KMLocalizedString("File not in PDF format or corruptead. Change a PDF file and try again");
            case CPDFConverterPDFSecurityError:
                erroeString = KMLocalizedString("Unsupported security scheme");
                break;
            case CPDFConverterPDFPageError:
                erroeString = KMLocalizedString("Page not found or content error");
                break;
            default:
                erroeString = KMLocalizedString("Table not found");
            }
            let newError = NSError(domain: "", code: err.code, userInfo: [NSLocalizedFailureReasonErrorKey: erroeString])
            self.delegate?.fileOperateFailed?(self.operateFile!, error: newError, info: (self.operateFile?.currentConvertParameter!)!)
        }else {
            self.delegate?.fileOperateSuccessed?(self.operateFile!, info: (self.operateFile?.currentConvertParameter!)!)
        }
        if self.converter != nil && self.converter?.delegate != nil {
            self.converter?.delegate = nil
        }
        if self.viewController?.view.window?.isVisible == true {
            willChangeValue(forKey: "isFinished")
            hasFinished = true
            didChangeValue(forKey: "isFinished")
        }
    }
    
}