//################################################################################################
/** @file XLSX Parser mixin for ish.js
 * @mixin ish.io.xslx
 * @author Nick Campbell (wrapper); https://stackoverflow.com/users/36866/some
 * @license Public Domain
 * @copyright 2022-2023, Nick Campbell (wrapper)
 */ //############################################################################################
/*global module, define */                                      //# Enable Node globals for JSHint
/*jshint maxcomplexity:9 */                                     //# Enable max complexity warnings for JSHint
/*jslint bitwise: true */                                       //# Enable bitwise operators for JSHint
(async function () {
    'use strict'; //<MIXIN>

    async function init(core) {
        //# Incapsulate read-excel-file.min.js within a self-executing function, returning it's XLSX to a local variable
        //#     LICENSE: MIT
        //#     FROM: https://www.npmjs.com/package/read-excel-file
        //#     FROM: https://unpkg.com/read-excel-file@5.5.3/bundle/read-excel-file.min.js
        function getXLSX() {
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            return (globalThis || self).readXlsxFile;
        }

        var readXlsxFile = getXLSX();


        //################################################################################################
        /** Collection of XLSX-based functionality.
         * @namespace ish.io.xlsx
         * @ignore
         */ //############################################################################################
        core.oop.partial(core.io, {
            xlsx: async function (oFile) {
                //#     FROM: https://stackoverflow.com/a/71112642/235704
                //#     FROM: https://javascript.plainenglish.io/how-to-read-an-excel-file-in-node-js-6e669e9a3ce1

                //readXlsxFile('./Data.xlsx')
                /*readXlsxFile(input.files[0], { getSheets: true }).then((sheets) => {
                    sheets.forEach((obj)=>{

                        readXlsxFile(input.files[0], { sheet: obj.name }).then(function(rows) {
                            console.log(obj.name, rows)
                        })
                    })
                })*/
                /*
                readXlsxFile(input.files[0], { sheet: 2 }).then(function(rows) {
                    console.log(rows)
                })
                */
                /*
                readSheetNames(input.files[0]).then(function(sheetNames) {
                    console.log(sheetNames)
                })*/
                /*readXlsxFile(oFile).then(function(a_oRows) { //# same as: await readXlsxFile(oFile);
                    console.log(a_oRows)
                });*/

                //# Example code from test/index.html: ish.io.xlsx(document.uploader.file.files[0])
                return await readXlsxFile(oFile);
            }
        }); //# core.io.xlsx

        //# .fire the plugin's loaded event
        core.io.event.fire("ish.io.xlsx");

        //# Return core to allow for chaining
        return core;
    }


    //# If we are running server-side
    //#     NOTE: Compliant with UMD, see: https://github.com/umdjs/umd/blob/master/templates/returnExports.js
    //#     NOTE: Does not work with strict CommonJS, but only CommonJS-like environments that support module.exports, like Node.
    if (typeof module === 'object' && module.exports) { //if (typeof module !== 'undefined' && this.module !== module && module.exports) {
        module.exports = init;
    }
    //# Else if we are running in an .amd environment, register as an anonymous module
    else if (typeof define === 'function' && define.amd) {
        define([], init);
    }
    //# Else we are running in the browser, so we need to setup the _document-based features
    else {
        return init(window.head.ish || document.querySelector("SCRIPT[ish]").ish);
    }

    //</MIXIN>
}());