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/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com *//* eslint-env node *//* global Promise */const XLSX = require('xlsx');const assert = require('assert');const SheetJSKnex = require("./SheetJSKnex");const Knex = require('knex');
/* Connection to both databases are passed around */let P = Promise.resolve([	Knex({ client: 'sqlite3', connection: { filename: './knex1.db' } }),	Knex({ client: 'sqlite3', connection: { filename: './knex2.db' } })]);
/* Sample data table */P = P.then(async (_) => {	const [knex] = _;	await knex.schema.dropTableIfExists('pres');	await knex.schema.createTable('pres', (table) => {		table.string('name');		table.integer('idx');	});	await knex.insert([		{ name: "Barack Obama", idx: 44 },		{ name: "Donald Trump", idx: 45 }	]).into('pres');
	await knex.schema.dropTableIfExists('fmts');	await knex.schema.createTable('fmts', (table) => {		table.string('ext');		table.string('ctr');		table.integer('multi');	});	await knex.insert([		{ ext: 'XLSB', ctr: 'ZIP', multi: 1 },		{ ext: 'XLS',  ctr: 'CFB', multi: 1 },		{ ext: 'XLML', ctr: '',    multi: 1 },		{ ext: 'CSV',  ctr: 'ZIP', multi: 0 },	]).into('fmts');
	return _;});
/* Export database to XLSX */P = P.then(async (_) => {	const [knex] = _;	const wb = XLSX.utils.book_new();	await SheetJSKnex.book_append_knex(wb, knex, "pres");	await SheetJSKnex.book_append_knex(wb, knex, "fmts");	XLSX.writeFile(wb, "knex.xlsx");	return _;});
/* Import XLSX to database */P = P.then(async (_) => {	const [, knex] = _;	const wb = XLSX.readFile("knex.xlsx");	await SheetJSKnex.wb_to_knex(wb, knex);	return _;});
/* Compare databases */P = P.then(async (_) => {	const [k1, k2] = _;	const P1 = await k1.select("*").from('pres');	const P2 = await k2.select("*").from('pres');	const F1 = await k1.select("*").from('fmts');	const F2 = await k2.select("*").from('fmts');	assert.deepEqual(P1, P2);	assert.deepEqual(F1, F2);});
P.then(async () => { process.exit(); });