public async Task <IActionResult> NewPoll([FromServices] IDiscordGuildService guildService, [FromServices] IMessageService messageService,
ulong guildId, NewPollViewModel viewModel, List <string> options)
{
// All channels for guild.
var channels = await guildService.GetChannels(guildId);
// Text channels for guild.
var textChannels = channels.Where(x => x.Type == (int)ChannelType.Text).ToList();
// Authorization - make sure channel belongs to the guild (prevents exploitation by providing a channel that isn't theirs, if they're authorized).
// Note - this should be extracted into a seperate web filter.
if (textChannels.FirstOrDefault(x => x.Id == viewModel.ChannelId) == null)
{
ModelState.AddModelError("All", "You are not authorized to perform this action.");
viewModel.Channels = new SelectList(textChannels, "Id", "Name");
return(View(viewModel));
}
var validOptions = options.Where(x => !string.IsNullOrWhiteSpace(x)).ToList();
// Make sure user supplied valid no of options
if (validOptions.Count < 2 || validOptions.Count > ModuleConstants.TotalOptions)
{
ModelState.AddModelError("All", $"Please provide between 2 and {ModuleConstants.TotalOptions} valid options.");
viewModel.Channels = new SelectList(textChannels, "Id", "Name");
return(View(viewModel));
}
if (!ModelState.IsValid)
{
return(View(viewModel));
}
var poll = new StringBuilder();
// Add poll title.
poll.Append(":small_blue_diamond: " + viewModel.Title + Environment.NewLine);
var discordNumbers = MessageService.DiscordNumberEmotes;
// Add options to poll.
for (var i = 0; i < validOptions.Count; i++)
{
poll.Append($"{discordNumbers[i + 1]} {validOptions[i]}{Environment.NewLine}");
}
// Post message and get message details.
var message = await messageService.Post(viewModel.ChannelId, poll.ToString());
// Create poll settings entry for guild in db, if doesn't exist.
if (await _entityServicePollSettings.Find(guildId) == null)
{
await _entityServicePollSettings.Create(new PollSettings()
{
GuildId = guildId
});
}
// Save poll to database
await _entityServicePoll.Create(new Poll()
{
ChannelId = viewModel.ChannelId,
MessageId = message.Id,
PollTitle = viewModel.Title,
GuildId = guildId
});
// Add reactions to message to act as voting buttons.
for (var i = 1; i < validOptions.Count + 1; i++)
{
await messageService.AddReaction(message, new Emoji(discordNumbers[i]));
}
return(RedirectToAction("Index"));
}