Creats a node end-point that returns total AYA billing value by NIS

node-server-aya-test/.gitignore

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+/node_modules

node-server-aya-test/README.md

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+# costa-rica-public-services-api

node-server-aya-test/main.js

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+
+const express = require('express')
+const parser = require('node-html-parser');
+const request = require('request');
+const app = express();
+
+const AYA_FORM = {
+    "__EVENTTARGET": "",
+    "__EVENTARGUMENT": "",
+    "__VIEWSTATE": "%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",
+    "__VIEWSTATEGENERATOR": "D33FB4C6",
+    "txtConsultaNIS": "33221428",
+    "btnConsultar": "Consultar"
+}
+const AYA_SERVER_ERROR = "No se puede procesar la consulta";
+const AYA_SERVER_UNEXISTING_NIS = "no existe";
+const AYA_SERVER_NO_PENDING_BILL = "no tiene facturación al cobro";
+const AYA_ID_MESSAGE = "#lblMsj"
+const AYA_ID_BILL_TOTAL = "#lblFacturacion"
+const AYA_ID_DETAIL = "#txtConsultaNIS"
+const AYA_TEXT_MESSAGE_NIS_START = "NIS "
+const AYA_TEXT_MESSAGE_NIS_END = " consultado"
+const AYA_TEXT_DETAIL_NIS_START = 'value="'
+const AYA_TEXT_DETAIL_NIS_END = '" max'
+
+
+app.get('/aya/:nis', function (requested, response) {
+    var responseBody = {
+        nis: "",
+        billTotal: "",
+        error: ""
+    }
+    const requestedNis = requested.params.nis;
+    if (requestedNis) {
+        request.post(
+            {
+                headers: {
+                    'Content-Type': 'application/x-www-form-urlencoded'
+                },
+                uri: 'https://websolution.aya.go.cr/ConsultaFacturacion/',
+                body: `__EVENTTARGET=${AYA_FORM.__EVENTTARGET}` +
+                    `&__EVENTARGUMENT=${AYA_FORM.__EVENTARGUMENT}` +
+                    `&__VIEWSTATE=${AYA_FORM.__VIEWSTATE}` +
+                    `&__VIEWSTATEGENERATOR=${AYA_FORM.__VIEWSTATEGENERATOR}` +
+                    `&txtConsultaNIS=${requestedNis}` +
+                    `&btnConsultar=${AYA_FORM.btnConsultar}`,
+                method: 'POST'
+            },
+            (err, res, body) => {
+                if (res.statusCode == 200) {
+
+                    const root = parser.parse(body);
+                    const message = root.querySelector(AYA_ID_MESSAGE);
+                    const billTotal = root.querySelector(AYA_ID_BILL_TOTAL)
+                    const detail = root.querySelector(AYA_ID_DETAIL)
+
+                    if (message && message.childNodes[0].rawText.indexOf(AYA_SERVER_ERROR) != -1) {
+                        responseBody.err = "AYA COMMON SERVER COLLAPSE"
+                    }
+                    else if (message && message.childNodes[0].rawText.indexOf(AYA_SERVER_UNEXISTING_NIS) != -1) {
+                        responseBody.err = "AYA UNEXISTING NIS"
+                    }
+                    else if (message && message.childNodes[0].rawText.indexOf(AYA_SERVER_NO_PENDING_BILL) != -1) {
+                        var nis = message.childNodes[0].rawText
+                        nis = nis.slice(nis.indexOf(AYA_TEXT_MESSAGE_NIS_START) + AYA_TEXT_MESSAGE_NIS_START.length, nis.indexOf(AYA_TEXT_MESSAGE_NIS_END))
+                        responseBody.nis = nis;
+                        responseBody.billTotal = 0;
+                    }
+                    else if (billTotal) {
+                        var total = billTotal.childNodes[0].rawText
+                        total = parseFloat(total.replace(",", ""));
+                        var nis = detail.rawAttrs
+                        nis = nis.slice(nis.indexOf(AYA_TEXT_DETAIL_NIS_START) + AYA_TEXT_DETAIL_NIS_START.length, nis.indexOf(AYA_TEXT_DETAIL_NIS_END))
+                        responseBody.nis = nis;
+                        responseBody.billTotal = total;
+                    }
+                    else {
+                        responseBody.err = "AYA UNKNOW SERVER ERROR"
+                    }
+                }
+                else {
+                    responseBody.err = "AYA CONNECTION SERVER ERROR"
+                }
+                response.send(responseBody)
+            }
+        )
+    }
+    else {
+        responseBody.err = "PROVIDE A NICE ON THE FORMAT `/aya/<nis-number>`"
+        response.send(responseBody)
+    }
+
+
+});
+
+
+app.listen(1337, function () {
+
+});