public async Task <Responses.Watcher> SetWatcher(SetWatcher request)
{
// Get watcher
var watcher = await _mainDbContext.Watchers.FindAsync(request.WatcherId);
// Watcher not found
if (watcher == null)
{
throw new NotFoundException(WatcherMessage.WatcherNotFound);
}
// Buy limit must be lower than watcher value
if (WatcherExpression.BuyLimitMustBeLowerThanWatcherValue(request.Buy).Invoke(watcher))
{
throw new ConflictException(new Conflict <SetWatcherConflictReason>(SetWatcherConflictReason.BUY_LIMIT_MUST_BE_LOWER_THAN_WATCHER_VALUE, string.Format(WatcherMessage.BuyLimitMustBeLowerThanWatcherValue, watcher.Value)));
}
// Sell limit must be higher than watcher value
if (WatcherExpression.SellLimitMustBeHigherThanWatcherValue(request.Sell).Invoke(watcher))
{
throw new ConflictException(new Conflict <SetWatcherConflictReason>(SetWatcherConflictReason.SELL_LIMIT_MUST_BE_HIGHER_THAN_WATCHER_VALUE, string.Format(WatcherMessage.SellLimitMustBeHigherThanWatcherValue, watcher.Value)));
}
// Watcher already got liquidated
if (WatcherExpression.WatcherSold().Invoke(watcher))
{
throw new ConflictException(new Conflict <SetWatcherConflictReason>(SetWatcherConflictReason.WATCHER_ALREADY_LIQUIDATED, WatcherMessage.WatcherAlreadyLiquidated));
}
// Watcher already bought
if (WatcherExpression.WatcherAlreadyBought(request.Buy).Invoke(watcher))
{
throw new ConflictException(new Conflict <SetWatcherConflictReason>(SetWatcherConflictReason.WATCHER_ALREADY_BOUGHT, string.Format(WatcherMessage.WatcherAlreadyBought, watcher.EntryPrice)));
}
// Watcher already sold
if (WatcherExpression.WatcherAlreadySold(request.Sell).Invoke(watcher))
{
throw new ConflictException(new Conflict <SetWatcherConflictReason>(SetWatcherConflictReason.WATCHER_ALREADY_SOLD, string.Format(WatcherMessage.WatcherAlreadySold, watcher.EntryPrice)));
}
// Set watcher
watcher.Set(request.Buy, request.Sell, request.Quantity);
// Update
_mainDbContext.Watchers.Update(watcher);
// Save
await _mainDbContext.SaveChangesAsync();
// Response
var response = _mapper.Map <Responses.Watcher>(watcher);
// Log
_logger.LogInformation("{@Event}, {@UserId}, {@Request}, {@Response}", "WatcherSet", request.UserId, request, response);
// Return
return(response);
}