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index.js
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index.js
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require("dotenv").config();
const express = require('express')
const axios = require("axios");
const qs = require("querystring");
const cheerio = require("cheerio");
const cron = require('node-cron');
const moment = require('moment-timezone');
const BBDC_URL = "http://www.bbdc.sg/bbdc/bbdc_web/newheader.asp";
const BBDC_LOGIN_URL = "http://www.bbdc.sg/bbdc/bbdc_web/header2.asp";
const BBDC_SLOTS_LISTING_URL = "http://www.bbdc.sg/bbdc/b-3c-pLessonBooking1.asp";
const BBDC_BOOKING_URL = "http://www.bbdc.sg/bbdc/b-3c-pLessonBookingDetails.asp";
const Telegram = require("telegraf/telegram");
const telegram = new Telegram(process.env.TELEGRAM_TOKEN);
let loginSession;
// Stores all slots discovered here so that same slot wont be notified everytime the bot checks
let slotHistory = {};
const app = express()
const PORT = process.env.PORT || 3000;
main = async () => {
telegram.sendMessage(
process.env.TELEGRAM_CHAT_ID,
`BBDC Bot started with the following config\n<code>Months: ${process.env.PREF_MONTH}\nDay: ${process.env.PREF_DAY}\nSession: ${process.env.PREF_SESSION}\nAuto Book: ${process.env.AUTO_BOOK}</code>`, {
parse_mode: "HTML"
}
);
scheduleJob();
};
scheduleJob = () => {
// Check for auto book
cron.schedule('*/1 * * * *', async () => {
ping(); // For heroku
telegram.sendMessage(
process.env.TELEGRAM_CHAT_ID,
`scheduling`, {
parse_mode: "HTML"
}
);
console.log("getting cookies");
const [cookie] = await getCookie();
console.log("cookie get")
[loginSession] = cookie.split(";");
await login();
console.log("logged in")
const slots = await getSlots(populatePreference());
sendPrettifiedSlotsMessage(slots);
// Check for auto book
if (process.env.AUTO_BOOK || false){
telegram.sendMessage(
process.env.TELEGRAM_CHAT_ID,
`autobooking`, {
parse_mode: "HTML"
}
);
console.log("Auto book is enabled. Attempting to book")
autoBook(slots);
};
// Adds to history
slotHistory = {
... slots,
... slotHistory
};
});
};
getCookie = async () => {
try {
console.log("cookies got 0");
const response = await axios.get(BBDC_URL);
console.log("cookies got 1");
return response.headers["set-cookie"];
} catch (error) {
console.log("failed to get cookies rip");
console.error(error);
}
};
login = async () => {
console.log("Starting log in");
try {
const data = {
txtNRIC: process.env.NRIC,
txtPassword: process.env.BBDC_PASSWORD,
btnLogin: " ",
};
const config = {
headers: {
"Content-Type": "application/x-www-form-urlencoded",
Cookie: loginSession,
},
};
await axios.post(BBDC_LOGIN_URL, qs.stringify(data), config);
} catch (error) {
console.error(error);
}
};
getSlots = async (preference) => {
console.log("Checking slots");
try {
const config = {
headers: {
"Content-Type": "application/x-www-form-urlencoded",
Cookie: loginSession,
},
};
const response = await axios.post(
BBDC_SLOTS_LISTING_URL,
qs.stringify(preference),
config
);
return parseSlotsListing(response.data);
} catch (error) {
console.error(error);
}
};
createBooking = async (slotID) => {
console.log("Slot booking started");
try {
const data = {
accId: process.env.ACCID,
slot: slotID,
};
const config = {
headers: {
"Content-Type": "application/x-www-form-urlencoded",
Cookie: loginSession,
},
};
const response = await axios.post(
BBDC_BOOKING_URL,
qs.stringify(data),
config
);
const $ = cheerio.load(response.data);
let errorMessage = $(
"body > table > tbody > tr > td:nth-child(2) > form > table > tbody > tr:nth-child(1) > td > table > tbody > tr:nth-child(3) > td.errtblmsg"
)
if (errorMessage.is(".errtblmsg")) {
telegram.sendMessage(process.env.TELEGRAM_CHAT_ID, errorMessage.text());
}
} catch (error) {
console.error(error);
}
};
autoBook = async (slots) => {
const today = moment.tz("Asia/Singapore");
for (slot in slots) {
const dateStr = (slots[slot]["date"]).split(" ");
const date = moment(dateStr[0], "D/M/YYYY");
if (date.diff(today, 'days') >= 3) {
createBooking(slot);
telegram.sendMessage(process.env.TELEGRAM_CHAT_ID, "Booking slot for " + slots[slot]["date"] + ". From " + slots[slot]["start"] + " to " + slots[slot]["end"] + ". Please verify booking");
}
}
};
populatePreference = () => {
const data = {
accid: process.env.ACCID,
optVenue: "1",
defPLVenue: "1",
DAY: [],
SESSION: [],
MONTH: [],
};
const days = process.env.PREF_DAY;
const sessions = process.env.PREF_SESSION;
const months = process.env.PREF_MONTH;
for (day of days.split(",")) {
data.DAY.push(day);
}
for (session of sessions.split(",")) {
data.SESSION.push(session);
}
for (month of months.split(",")) {
data.MONTH.push(month);
}
return data;
};
parseSlotsListing = (data) => {
let re = /"(.*?)"/g;
let slots = {};
const $ = cheerio.load(data);
$(
"#myform > table:nth-child(2) > tbody > tr:nth-child(10) > td > table > tbody > tr > td[onmouseover]"
).each(function (i, elem) {
let slotInfo = $(this).attr("onmouseover").matchAll(re);
slotInfo = Array.from(slotInfo);
const slotID = $(this).children().attr("value");
const date = slotInfo[0][1];
const session = slotInfo[1][1];
const start = slotInfo[2][1];
const end = slotInfo[3][1];
if (!(slotID in slotHistory)) {
let informationStr = `New slot found on ${date}, Session: ${session} (${start} - ${end})`;
slots[slotID] = {
info: informationStr,
date: date,
start: start,
end: end,
session: session
};
}
});
return slots;
};
sendPrettifiedSlotsMessage = async (data) => {
if (Object.keys(data).length === 0) {
console.log("Unable to find any slots")
// const res = await telegram.sendMessage(
// process.env.TELEGRAM_CHAT_ID,
// "Unable to find any available slots"
// );
// setTimeout(function () {
// deleteMessage(res.message_id);
// }, 5000);
return;
}
let message = "";
for (slot in data) {
message = message + "🚗 " + data[slot].info + "\n";
}
telegram.sendMessage(process.env.TELEGRAM_CHAT_ID, message);
};
deleteMessage = (messageID) => {
telegram.deleteMessage(process.env.TELEGRAM_CHAT_ID, messageID);
};
ping = () => {
axios.get(process.env.HEROKU_URL);
}
app.get('/', (req, res) => res.send('Hello World!'))
app.listen(PORT, () => console.log(`BBDC bot listening on port:${PORT}`))
main();