private async Task <GumroadSale> GetSaleAsync(IDMChannel dm, RexoProduct product, Email email)
{
// Check if the user's data was provided in a previous gumroad request
// Do I even use this?
var foundSale = _cachedSales.FirstOrDefault(x => x.PurchaseEmail.ToLower() == email.ToString().ToLower());
if (foundSale == null)
{
var allSales = await _gumroad.GetSalesAsync(_config["gumroad:token"], new GetSalesParams
{
Email = email.ToString()
});
if (allSales.IsSuccess)
{
return(allSales.Sales.FirstOrDefault());
}
else
{
return(null);
}
}
return(foundSale);
}
public async Task LinkUserAsync(ulong userId, RexoProduct product)
{
// Check if user is in a shared guild
var user = _discord.GetUser(userId) as SocketGuildUser;
if (user == null)
{
return;
}
// Check if user is being ratelimited
if (_ratelimitedUsers.TryGetValue(userId, out DateTime ratelimitStart))
{
var ratelimitRemaining = DateTime.UtcNow - ratelimitStart;
// If yes and time is remaining, silently drop the request
if (ratelimitRemaining < _ratelimitLength)
{
_logger.LogInformation($"User `{userId}` was stopped by the ratelimiter: {Math.Round(ratelimitRemaining.TotalMinutes, 2)} minutes remaining");
return;
}
else
{
// Otherwise, remove them from ratelimiter and continue
_ratelimitedUsers.Remove(userId, out DateTime _);
_logger.LogInformation($"User `{userId}` removed from ratelimiter");
}
}
// Get guild and dm objects
var guild = _discord.GetGuild(product.GuildId);
var dm = await user.GetOrCreateDMChannelAsync();
Email email = default;
GumroadSale foundSale = default;
// Check if an email is already stored for the user
var rexoUser = _db.Users.SingleOrDefault(x => x.Id == userId);
if (rexoUser != null)
{
email = new Email(rexoUser.Email);
foundSale = await GetSaleAsync(dm, product, email);
if (foundSale == null)
{
await dm.SendMessageAsync($"Sorry, I couldn't find any sales for this product matching your linked email.");
return;
}
}
// Loop over several attempts allowing some space for user error
int attempt = 0;
while (!email.IsValid && attempt < 5)
{
// First attempt instruction message
if (attempt == 0)
{
await dm.SendMessageAsync($"Hey {user.Username}! " +
$"It looks like you want to link your purchase of {product.Name} to get a special role in {guild.Name}. " +
$"If this is correct, please reply with your email so I can confirm this information on Gumroad.");
}
// Wait for user response
attempt++;
var emailReplyMsg = await _responsive.WaitForMessageAsync((msg) => true, TimeSpan.FromMinutes(1));
email = new Email(emailReplyMsg.Content);
if (!email.IsValid)
{
await dm.SendMessageAsync($"Sorry, it doesn't look like that's a valid email. Check for typos and try again.");
continue;
}
// Try to pull a sale matching this email from gumroad
foundSale = await GetSaleAsync(dm, product, email);
if (foundSale != null)
{
break;
}
await dm.SendMessageAsync($"Sorry, I couldn't find any sales for {product.Name} matching that email. Check for typos and try again.");
}
// If the loop breaks due to attempts, add the user to the ratelimiter and break.
if (attempt >= 5)
{
_logger.LogInformation($"User `{userId}` is now being ratelimited");
_ratelimitedUsers.TryAdd(userId, DateTime.UtcNow);
await dm.SendMessageAsync($"You have submitted 5 invalid emails and are now being ratelimited. Please try again in 30 minutes.");
return;
}
// Save order information to the database
var rexoRole = new RexoSyncedRole
{
OrderId = foundSale.OrderId,
ProductId = product.Id
};
_db.SyncedRoles.Add(rexoRole);
_db.SaveChanges();
// Give the user their special role
var role = guild.GetRole(product.RoleId);
await user.AddRoleAsync(role);
await dm.SendMessageAsync($"I have successfully gave you the {role.Name} role in {guild.Name}, have fun!");
}