public void Validate()
{
if (this.Settings == null)
{
throw new Exception("Settings must be supplied");
}
this.Settings.Validate();
this.CleanCollections();
if (To?.Any() == false && CC?.Any() == false && BCC?.Any() == false)
{
throw new Exception("At lest one To, CC or BCC must be supplied");
}
if (string.IsNullOrWhiteSpace(this.Body))
{
throw new Exception("Body must have some content");
}
if (string.IsNullOrWhiteSpace(this.Subject))
{
throw new Exception("Subjet must be supplied");
}
this.Sender?.Validate();
this.From?.Validate();
this.To?.Validate();
this.CC?.Validate();
this.BCC?.Validate();
this.ReplyToList?.Validate();
this.Headers?.Validate();
this.Attachments?.Validate();
if (this.Attachments?.Sum(s => s.Content.Length) > MAXIMUM_SUM_ATTACHMENTS_SIZE)
{
throw new Exception($"Total size of attachments exceeds {(20971520 / 1024) / 1024}MB");
}
if (Headers?.Count > 0 && Headers.Select(s => s.Name.Trim()).Distinct(StringComparer.OrdinalIgnoreCase).Count() != Headers.Count)
{
throw new Exception("Duplicate email headers are not allowed");
}
}