BadmintonBooker/OTPExtractor.cs

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

namespace BadmintonBooker;

public static class OTPExtractor
{
    public static async Task<string?> GetEgovOTP(IBrowserContext context, IPage originalPage)
    {
        var msgPage = await context.NewPageAsync();
        await msgPage.GotoAsync("https://messages.google.com/web/u/0/conversations/CgjwUsdGGwxxGhIBNw", new PageGotoOptions { WaitUntil = WaitUntilState.Load });

        var messageElement = msgPage.Locator("mws-text-message-part").Last;
        string messageText = await messageElement.InnerTextAsync();

        await originalPage.BringToFrontAsync();

        var match = Regex.Match(messageText, @"\b\d{5,}\b");
        if (match.Success)
        {
            return match.Value;
        }
        else
        {
            Console.WriteLine("No OTP found in the message.");
            return null;
        }
    }
}