/// <inheritdoc />
public async Task <(IEnumerable <(Registration, ChatBot)> Registrations, Error Error)> GetUserRegistrationsAsync(
string username,
CancellationToken cancellationToken = default
)
{
(IEnumerable <(Registration, ChatBot)> Registrations, Error Error)result;
var regs = (
await _regsRepo.GetAllForUserAsync(username, cancellationToken)
.ConfigureAwait(false)
).ToArray();
if (regs.Any())
{
// ToDo maybe use mongodb functions for this aggregation
var getBotTasks = regs
.Select(r => r.ChatBotDbRef.Id.ToString())
.Distinct(StringComparer.OrdinalIgnoreCase)
.Select(botId => _botsRepo.GetByIdAsync(botId, cancellationToken));
var bots = await Task.WhenAll(getBotTasks)
.ConfigureAwait(false);
var aggregatedRegs = regs
.Select(r => (r, bots.Single(b => b.Id == r.ChatBotDbRef.Id.ToString())))
.ToArray();
result = (aggregatedRegs, null);
}
else
{
result = (null, new Error(ErrorCode.RegistrationNotFound));
}
return(result);
}
