private async Task <byte[]> GetPDF(byte[] file, string id)
{
byte[] ret = null;
string baseUrl = _configuration["baseUrl"];
string inputFilename = @"wwwroot/pdf-template/cert.html";
string imgsrc = $"data:image/png;base64,{QR.GetPureBase64($"{baseUrl}/Contract/Certificate?id={id}")}";
HtmlDto dto = new HtmlDto()
{
html = System.Web.HttpUtility.HtmlEncode(
Encoding.UTF8.GetString(
System.IO.File.ReadAllBytes(inputFilename)))
.Replace("{certificateid}", id)
.Replace("{qrlink}", imgsrc),
footerPath = $"{baseUrl}/pdf-template/footer.html"
};
string jsonString = Newtonsoft.Json.JsonConvert.SerializeObject(dto);
string uri = _configuration["pdfApi"];
var content = new StringContent(jsonString, Encoding.UTF8, "application/json");
var response = await client.PostAsync($"{uri}", content).ConfigureAwait(false);
var file2 = await response.Content.ReadAsByteArrayAsync();
ret = Concat.DoConcat(file, file2);
return(ret);
}