BadmintonBooker/Program.cs

using System.Text.RegularExpressions;
using BadmintonBooker;
using Microsoft.Playwright;

var argsLength = args.Length;
if(argsLength < 1)
{
    Console.WriteLine("Useage: BadmintonBooker <endtime (HH:mm)> <debug? (true/false)>");
    return;
}
var endTime = args[0];
if (!TimeSpan.TryParse(endTime, out var endTimeSpan))
{
    Console.WriteLine("Invalid end time format. Use HH:mm");
    return;
}

var debug = false;
if (argsLength == 2)
{
    if (!bool.TryParse(args[1], out debug))
    {
        Console.WriteLine("Invalid debug value. Use true or false");
        return;
    }
}

using var playwright = await Playwright.CreateAsync();
var context = await BrowserManager.GetContextAsync(playwright);
var page = context.Pages.Count > 0 ? context.Pages[0] : await context.NewPageAsync();

await page.GotoAsync("https://my.hdc.mv/");
try
{
    await page.GetByRole(AriaRole.Link, new() { Name = "Login" }).ClickAsync();
    await page.GetByRole(AriaRole.Button, new() { Name = "eFaas" }).ClickAsync();
    await page.GetByRole(AriaRole.Tab, new() { Name = "Password Login" }).ClickAsync(new () { Delay = 1000 });
    await page.GetByPlaceholder("Username").FillAsync("A384347");
    var password = File.ReadAllText("password.txt");
    await page.GetByPlaceholder("Password").FillAsync(password);
    await page.GetByRole(AriaRole.Button, new() { Name = "LOGIN" }).ClickAsync();
    await page.GetByRole(AriaRole.Button, new() { Name = "CONTINUE" }).ClickAsync(new () { Delay = 1000 });
    await Task.Delay(5000);

    var egovOtp = await GoogleMessages.GetEgovOTP(context, page);
    if (egovOtp is not null)
        Console.WriteLine($"Extracted eGov OTP: {egovOtp}");
    else
        return;

    await page.GetByPlaceholder("OTP").FillAsync(egovOtp);
    await page.GetByRole(AriaRole.Button, new() { Name = "CONTINUE" }).ClickAsync();
}
catch (Exception ex)
{
    Console.WriteLine($"Error during login: {ex.Message}\nAssuming already logged in, proceeding with booking...");
    await page.CloseAsync();
    return;
}

await page.GetByText("Make a booking").ClickAsync();
await page.GetByText("Fahiveni").ClickAsync();
await page.GetByText("Sports and Leisure").ClickAsync();
await page.GetByText(" Fahiveni Community Center ").First.ClickAsync(new () { Delay = 1500 });
await page.GetByText("Badminton Court 1").ClickAsync(new () { Delay = 1500 });

var currentDateTime = DateTime.Now;
var upperBound = new DateTime(currentDateTime.Year, currentDateTime.Month, currentDateTime.Day, 
    hour: 8, minute: 15, second: 0);

var lowerBound = new DateTime(currentDateTime.Year, currentDateTime.Month, currentDateTime.Day, 
    hour: 8, minute: 0, second: 0, millisecond: 0);

var lastReloadTime = DateTime.Now;
while (!debug && (currentDateTime < lowerBound || currentDateTime >= upperBound))
{
    //Don't reload if 10 sec away from 8AM
    //Reload every 2 minutes to avoid logout
    if(lowerBound - currentDateTime > TimeSpan.FromSeconds(10) &&
       lastReloadTime - currentDateTime > TimeSpan.FromMinutes(2))
    {
        await page.ReloadAsync();
        lastReloadTime = DateTime.Now;
    }

    await Task.Delay(5);
    currentDateTime = DateTime.Now;
}

// Click the next button to load tomorrow's time slots
await page.Locator("div.flex.items-center.justify-end > div > div:nth-child(2) > svg").ClickAsync();
try
{
    Console.WriteLine($"{DateTime.Now:HH:mm:ss}: Clicking next for tomorrow's time slots...");
    await page.Locator("div.grid.bg-gray-100.rounded-lg.anim").Filter(new () { HasText = endTime }).ClickAsync( new() { Timeout = 2000 });
    Console.WriteLine($"{DateTime.Now:HH:mm:ss}: Timeslot found and clicked.");
}
catch (PlaywrightException)
{
    Console.WriteLine($"{DateTime.Now:HH:mm:ss}: Could not find the specified end time slot: {endTime}");
    await page.ScreenshotAsync(new PageScreenshotOptions { Path = "ErrorScreenshot.png" });
    await page.CloseAsync();
    return;
}

await page.GetByRole(AriaRole.Button, new() { Name = "Submit" }).ClickAsync();
await page.GetByRole(AriaRole.Link, new() { Name = "Proceed to payment" }).ClickAsync();
await page.GetByRole(AriaRole.Button, new() { Name = "Pay Now" }).ClickAsync(new () { Delay = 3500 });
await page.GetByRole(AriaRole.Checkbox, new()).ClickAsync();
await page.GetByRole(AriaRole.Button, new() { Name = "Pay now" }).ClickAsync();
var cardDetails = File.ReadAllLines("CardDetails.txt");
await page.GetByPlaceholder("Name on card").FillAsync(cardDetails[0]);
await page.GetByPlaceholder("1234 1234 1234 1234").FillAsync(cardDetails[1]);
await page.GetByPlaceholder("MM/YY").FillAsync(cardDetails[2]);
var cvv = File.ReadAllText("CVV.txt");
await page.GetByPlaceholder("CVV").FillAsync(cvv);
await page.GetByText(new Regex("^Pay")).ClickAsync(new () { Delay = 1000 });
await Task.Delay(15000);
var bmlOtp = await GoogleMessages.GetBMLOTP(context, page);
if (bmlOtp is not null)
    Console.WriteLine($"Extracted BML OTP: {bmlOtp}");
else
{
    await page.CloseAsync();
    return;
}

await page.Locator("input[name='otpValue']").FillAsync(bmlOtp);
await page.GetByRole(AriaRole.Button, new() { Name = "CONFIRM" }).ClickAsync();
await Task.Delay(15000);

var hdcMessage = await GoogleMessages.GetMessageFromHDC(context, page);
Console.WriteLine($"Message from HDC: {hdcMessage}");

await page.CloseAsync();