Office template generation in Swift

//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

import PDFNet
import Foundation

//------------------------------------------------------------------------------
// The following sample illustrates how to use the PTConvert utility class
// to convert MS Office files to PDF and replace templated tags present in the document
// with content supplied via json
//
// For a detailed specification of the template format and supported features,
// see: https://docs.apryse.com/documentation/core/guides/generate-via-template/data-model/
//
// This conversion is performed entirely within the PDFNet and has *no*
// external or system dependencies -- Conversion results will be
// the same whether on Windows, Linux or Android.
//
// Please contact us if you have any questions.
//------------------------------------------------------------------------------

func runOfficeToPDFTest() -> Int {
    return autoreleasepool {
        var ret = 0

        do {
            try PTPDFNet.catchException {
                let inputPath: String! = Bundle.main.path(forResource: "SYH_Letter.docx", ofType: "docx")
                let imagePath: String! = Bundle.main.path(forResource: "logo_red.png", ofType: "png")
                let outputPath: String = URL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]).appendingPathComponent("SYH_Letter.pdf").path
                let json: String = String(format:"""
                    "dest_given_name": "Janice N.",
                    "dest_street_address": "187 Duizelstraat",
                    "dest_surname": "Symonds",
                    "dest_title": "Ms.",
                    "land_location": "225 Parc St., Rochelle, QC ",
                    "lease_problem": "According to the city records, the lease was initiated in September 2010 and never terminated",
                    "logo": { "image_url": "%@", "width" : 64, "height":  64 },
                    "sender_name": "Arnold Smith"
                """, imagePath);

                // Start with a PDFDoc (the conversion destination)
                let pdfDoc: PTPDFDoc = PTPDFDoc()

                let options: PTOfficeToPDFOptions = PTOfficeToPDFOptions()
                options.setTemplateParamsJson(json)

		        // perform the conversion with template delimiters and content dictionary
                PTConvert.office(toPDF: pdfDoc, in_filename: inputPath, options: options)

                pdfDoc.save(toFile: outputPath, flags: e_ptremove_unused.rawValue)

                print("Saved: \(outputPath)")
            }
        } catch let e as NSError {
            print("\(e)")
            ret = 1
        }

        return ret
    }
}