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excel.js
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/
excel.js
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/*eslint no-console: 0, no-unused-vars: 0, no-shadow: 0, dot-notation: 0, new-cap: 0*/
/*eslint-env node, es6 */
"use strict";
var express = require("express");
var excel = require("node-xlsx");
var fs = require("fs");
var path = require("path");
module.exports = function() {
var app = express.Router();
//Hello Router
app.get("/", (req, res) => {
var output =
`<H1>Excel Examples</H1></br>
<a href="${req.baseUrl}/download">/download</a> - Download data in Excel XLSX format</br>`;
res.type("text/html").status(200).send(output);
});
//Simple Database Select - In-line Callbacks
app.get("/download", async(req, res) => {
try {
const dbClass = require(global.__base + "utils/dbPromises");
let client = new dbClass(req.db);
const statement = await client.preparePromisified(
`SELECT TOP 10 "HEADER.PURCHASEORDERID" as "ID",
"PRODUCT.PRODUCTID" as "PRODUCT",
GROSSAMOUNT as "AMOUNT"
FROM "PO.Item"`
);
const results = await client.statementExecPromisified(statement, []);
let out = [];
for (let item of results) {
out.push([item.ID, item.PRODUCT, item.AMOUNT]);
}
var result = excel.build([{
name: "Purchase Orders",
data: out
}]);
res.header("Content-Disposition", "attachment; filename=Excel.xlsx");
return res.type("application/vnd.ms-excel").status(200).send(result);
} catch (e) {
return res.type("text/plain").status(500).send(`ERROR: ${e.toString()}`);
}
});
return app;
};