public async Task <Responses.Watcher> AddWatcher(AddWatcher request)
{
// Get currency
var currency = await _mainDbContext.Currencies.FindAsync(request.CurrencyId);
// Watcher not found
if (currency == null)
{
throw new NotFoundException(CurrencyMessage.CurrencyNotFound);
}
// Get user
var user = await _mainDbContext.Users.FindAsync(request.UserId);
// User not found
if (user == null)
{
throw new NotFoundException(UserMessage.UserNotFound);
}
// Get indicator
var indicator = await _mainDbContext.Indicators.FindAsync(request.IndicatorId);
// Indicator not found
if (indicator == null)
{
throw new NotFoundException(IndicatorMessage.IndicatorNotFound);
}
// Get watcher
var watcher = await _mainDbContext.Watchers.FirstOrDefaultAsync(WatcherExpression.Unique(request.UserId, request.CurrencyId, indicator.UserId, indicator.IndicatorId));
// Watcher already exists
if (watcher != null)
{
throw new ConflictException(new Conflict <AddWatcherConflictReason>(AddWatcherConflictReason.WATCHER_ALREADY_EXISTS, WatcherMessage.WatcherAlreadyExists));
}
// Get default watcher
var defaultWatcher = await _mainDbContext.Watchers.FirstOrDefaultAsync(WatcherExpression.DefaultWatcher(request.CurrencyId, request.IndicatorId));
// Add watcher
watcher = new Watcher(
request.UserId,
request.CurrencyId,
indicator.IndicatorId,
defaultWatcher?.Value,
null,
null,
null,
defaultWatcher?.AverageBuy,
defaultWatcher?.AverageSell,
defaultWatcher?.Price,
request.Enabled,
DateTime.UtcNow.StripSeconds());
// Add
_mainDbContext.Watchers.Add(watcher);
// Save
await _mainDbContext.SaveChangesAsync();
// Response
var response = _mapper.Map <Responses.Watcher>(watcher);
// Log
_logger.LogInformation("{@Event}, {@UserId}, {@Request}, {@Response}", "WatcherAdded", request.UserId, request, response);
// Return
return(response);
}