public async Task Get(char letter, string color)
{
if (string.IsNullOrEmpty(color))
{
throw new ArgumentNullException(nameof(color));
}
var fileName = $"{letter}-{color}.png";
var r = Response;
r.Clear();
var existingFileBytes = await _fileStore.GetFileBytesAsync(_fileStore.Combine(
_sitesFolder.RootPath,
_pathToImages,
fileName));
if (existingFileBytes != null)
{
r.ContentType = "image/png";
r.Headers.Add("content-disposition", $"filename=\"{fileName}\"");
r.Headers.Add("content-length", Convert.ToString((int)existingFileBytes.Length));
r.Body.Write(existingFileBytes, 0, existingFileBytes.Length);
}
else
{
// Validate supplied input as this input is used by the letter renderer
var isCorrectChars = color.IsValidHex();
var isCorrectLength = color.Length <= 6;
if (!isCorrectChars | !isCorrectLength)
{
throw new Exception("The supplied color is not a valid hexadecimal value.");
}
// For the first request to the image generate the image,
// save the image to disk & serve the response. Subsequent requests
// for the same image will be served from disk to avoid creating
// the image upon every request and to reduce global locks due
// to System.Drawing and internal calls to GDI+ on Windows
using (var renderer = _letterRenderer)
{
var fileBytes = renderer.GetLetter(new LetterOptions()
{
Letter = letter.ToString().ToUpper(),
BackColor = color
}).StreamToByteArray();
using (var stream = new MemoryStream(fileBytes))
{
await _sitesFolder.SaveFileAsync(stream, fileName, _pathToImages);
}
r.ContentType = "image/png";
r.Headers.Add("content-disposition", $"filename=\"{fileName}\"");
r.Headers.Add("content-length", Convert.ToString((int)fileBytes.Length));
r.Body.Write(fileBytes, 0, fileBytes.Length);
}
}
}
public LetterController(
IInMemoryLetterRenderer letterRenderer,
IFileStore fileStore,
IShellSettings shellSettings,
ISitesFolder sitesFolder,
IHostingEnvironment hostEnvironment)
{
_letterRenderer = letterRenderer;
_fileStore = fileStore;
_sitesFolder = sitesFolder;
_hostEnvironment = hostEnvironment;
_pathToImages = fileStore.Combine(hostEnvironment.ContentRootPath, shellSettings.Location, "images");
_urlToImages = $"/sites/{shellSettings.Location.ToLower()}/images/";
}
public LetterController(
IInMemoryLetterRenderer letterRenderer,
IHostingEnvironment hostEnvironment,
IShellSettings shellSettings,
ISitesFolder sitesFolder,
IFileStore fileStore)
{
_letterRenderer = letterRenderer;
_sitesFolder = sitesFolder;
_fileStore = fileStore;
_pathToImages = fileStore.Combine(
hostEnvironment.ContentRootPath,
shellSettings.Location,
"images");
}
public MediaController(
IMediaStore <Models.Media> mediaStore,
IHostingEnvironment hostEnvironment,
IFileStore fileStore)
{
_mediaStore = mediaStore;
_fileStore = fileStore;
if (_pathToEmptyImage == null)
{
_pathToEmptyImage = _fileStore.Combine(hostEnvironment.ContentRootPath,
"wwwroot",
"images",
"photo.png");
}
}
public EditProfileViewProvider(
IUserPhotoStore <UserPhoto> userPhotoStore,
IPlatoUserStore <User> platoUserStore,
IHostingEnvironment hostEnvironment,
IShellSettings shellSettings,
UserManager <User> userManager,
ISitesFolder sitesFolder,
IFileStore fileStore)
{
_platoUserStore = platoUserStore;
_userPhotoStore = userPhotoStore;
_sitesFolder = sitesFolder;
_userManager = userManager;
// paths
_pathToImages = fileStore.Combine(hostEnvironment.ContentRootPath, shellSettings.Location, "images");
_urlToImages = $"/sites/{shellSettings.Location.ToLower()}/images/";
}
public AdminViewProvider(
IShellSettings shellSettings,
UserManager <User> userManager,
IStringLocalizer <AdminViewProvider> stringLocalizer,
IUserPhotoStore <UserPhoto> userPhotoStore,
IUserRepository <User> userRepository,
IHostEnvironment hostEnvironment,
IPlatoUserStore <User> userStore,
ISitesFolder sitesFolder,
IFileStore fileStore)
{
_userPhotoStore = userPhotoStore;
_userRepository = userRepository;
_userManager = userManager;
_sitesFolder = sitesFolder;
_userStore = userStore;
T = stringLocalizer;
// paths
_pathToImages = fileStore.Combine(hostEnvironment.ContentRootPath, shellSettings.Location, "images");
_urlToImages = $"/sites/{shellSettings.Location.ToLower()}/images/";
}
public string Combine(params string[] paths)
{
return(_fileStore.Combine(paths));
}
