//
//  KMDocumentController.swift
//  PDF Master
//
//  Created by wanjun on 2022/12/5.
//

import Cocoa

let KMPDFDocumentType: String = "com.adobe.pdf"
let KMPDFBundleDocumentType: String = "net.sourceforge.skim-app.pdfd"
let KMNotesDocumentType: String = "net.sourceforge.skim-app.skimnotes"
let KMNotesTextDocumentType: String = "public.plain-text"
let KMNotesRTFDocumentType: String = "public.rtf"
let KMNotesRTFDDocumentType: String = "com.apple.rtfd"
let KMNotesFDFDocumentType: String = "com.adobe.fdf"
let KMPostScriptDocumentType: String = "com.adobe.postscript"
let KMEncapsulatedPostScriptDocumentType: String = "com.adobe.encapsulated-postscript"
let KMDVIDocumentType: String = "org.tug.tex.dvi"
let KMXDVDocumentType: String = "org.tug.tex.xdv"
let KMFolderDocumentType: String = "public.folder"
let KMDocumentSetupAliasKey: String = "_BDAlias"
let KMDocumentSetupFileNameKey: String = "fileName"

class KMDocumentController: NSDocumentController {
    
    func fetchUniquePath(_ originalPath: String) -> String {
        var path = originalPath
        let dManager = FileManager.default
        if !dManager.fileExists(atPath: path) {
            if path.extension.count < 1 {
                path = path.stringByAppendingPathExtension("pdf")
            }
            return path
        } else {
            let originalFullFileName = path.lastPathComponent
            let originalFileName = path.lastPathComponent.deletingPathExtension
            let originalExtension = path.extension

            let startIndex: Int = 0
            let endIndex: Int = startIndex + originalPath.count - originalFullFileName.count - 1
            let fileLocatePath = originalPath.substring(to: endIndex)
            var i = 1
            while (1 != 0) {
                var newName = String(format: "%@%ld", originalFileName, i)
                newName = newName.stringByAppendingPathExtension(originalExtension)
                let newPath = fileLocatePath.stringByAppendingPathComponent(newName)
                if !dManager.fileExists(atPath: newPath) {
                    return newPath
                } else {
                    i+=1
                    continue
                }
            }
        }
    }
    
    func kNewDocumentTempSavePath(_ fileName: String) -> String {
        let searchPath = NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory, .userDomainMask, true).last
        let append1 = searchPath?.stringByAppendingPathComponent(Bundle.main.bundleIdentifier!)
        let append2 = append1!.stringByAppendingPathComponent(String(format: "%@", fileName))
        return append2
    }
    
    func savePdf(_ filePath: String) -> Void {
        let pdfData = try! Data(contentsOf: URL(fileURLWithPath: filePath))
        let document = try! self.makeUntitledDocument(ofType: KMPDFDocumentType) as NSDocument
        if ((try? document.read(from: pdfData, ofType: KMPDFDocumentType)) != nil) {
            self.addDocument(document)
            document.makeWindowControllers()
            document.showWindows()
        }
            
    }
    
    // MARK: Action
    
    @IBAction func importFromFile(_ sender: Any) {
        
    }
    
    @IBAction func openBlankPage(_ sender: Any) {
        let fileName = String(format: "%@.pdf", NSLocalizedString("Untitled", comment: ""))
        let savePath = fetchUniquePath(kNewDocumentTempSavePath(fileName))
        let pdfDocument = CPDFDocument()
        pdfDocument?.insertPage(CGSize(width: 595, height: 842), at: 0)
        pdfDocument?.write(to: URL(fileURLWithPath: savePath))
        NSDocumentController.shared.openDocument(withContentsOf: URL(fileURLWithPath: savePath), display: true) { document, documentWasAlreadyOpen, error in
            if document is KMMainDocument {
                let newDocument = document
                (newDocument as! KMMainDocument).isNewCreated = false
            }
        }
    }

    @IBAction func newDocumentFromImage(_ sender: Any) {
        let openPanel = NSOpenPanel()
        openPanel.allowedFileTypes = KMBatchProcessingTableViewModel.supportedImageTypes()
        openPanel.allowsMultipleSelection = true
        openPanel.message = NSLocalizedString("Select images to create a new document. To select multiple files press cmd ⌘ button on keyboard and click on the target files one by one.", comment: "")
        openPanel.beginSheetModal(for: NSApp.mainWindow!) { response in
            let savePath = self.kNewDocumentTempSavePath("convertToPDF.pdf")
            if response == .OK {
                KMConvertPDFManager.convertImages(openPanel.urls, savePath: savePath) { success, errorDic in
                    if !success || !FileManager.default.fileExists(atPath: savePath) {
                        if FileManager.default.fileExists(atPath: savePath) {
                            try? FileManager.default.removeItem(atPath: savePath)
                        }
                        
                        let alert = NSAlert()
                        alert.alertStyle = .critical
                        alert.messageText = NSLocalizedString("Conversion Failed", comment: "")
                        alert.addButton(withTitle: NSLocalizedString("OK", comment: ""))
                        alert.runModal()
                        return
                    }
                    self.savePdf(savePath)
                    try? FileManager.default.removeItem(atPath: savePath)
                }
            }
        }
    }
    
    @IBAction func importFromWebPage(_ sender: Any) {
        let windowController: KMURLToPDFWindowController = KMURLToPDFWindowController.init(windowNibName: NSNib.Name("KMURLToPDFWindowController"))
        
        windowController.beginSheetModal(for: NSApp.mainWindow!) { filePath in
            if filePath != nil && FileManager.default.fileExists(atPath: filePath) {
                NSDocumentController.shared.openDocument(withContentsOf: URL(fileURLWithPath: filePath), display: true) { document, documentWasAlreadyOpen, error in
                    if document is KMMainDocument {
                        (document as! KMMainDocument).isNewCreated = true
                    }
                }
            }
        }
    }

    
    @IBAction func importFromScanner(_ sender: Any) {
        
    }
}