public ImageModule(IRootPathProvider rootPathProvider, ICommandParser commandParser, IBlobStore store, IImageGenerator imageGenerator)
{
Post["/image/"] = _ =>
{
Command c = null;
if (!commandParser.TryParse(Request.Form.text.HasValue ? (string)Request.Form.text : string.Empty, out c))
{
// Invalid input. Early return.
return Response.AsJson(UnknownResponse);
}
if (string.Compare(c.Preamble, Command.HelpConstant, StringComparison.OrdinalIgnoreCase) == 0)
{
// Help request. Early return.
return Response.AsJson(HelpResponse);
}
var imageId = string.Format("{0}-{1}-{2}.jpg",
c.Preamble,
Nancy.Helpers.HttpUtility.UrlEncode(c.TopLine ?? string.Empty),
Nancy.Helpers.HttpUtility.UrlEncode(c.BottomLine ?? string.Empty));
if (!store.Exists(imageId))
{
var img = imageGenerator.GenerateImage(c.Preamble, c.TopLine, c.BottomLine);
if (img != null)
{
using (var ms = new MemoryStream())
{
img.Save(ms, ImageFormat.Jpeg);
ms.Seek(0, SeekOrigin.Begin);
store.Store(imageId, ms);
}
}
else
{
// We failed to generate an image; send unknown response
return Response.AsJson(new Models.UnknownResponse());
}
}
return Response.AsJson(
new Models.ImageResponse(store.GetUri(imageId).ToString(),
string.Format("{0} {1}", c.TopLine, c.BottomLine)));
};
}
public ImageModule(IRootPathProvider rootPathProvider, ICommandParser commandParser, IBlobStore store, IImageGenerator imageGenerator)
{
Post["/image/"] = _ =>
{
Command c = null;
if (!commandParser.TryParse(Request.Form.text.HasValue ? (string)Request.Form.text : string.Empty, out c))
{
// Invalid input. Early return.
return(Response.AsJson(UnknownResponse));
}
if (string.Compare(c.Preamble, Command.HelpConstant, StringComparison.OrdinalIgnoreCase) == 0)
{
// Help request. Early return.
return(Response.AsJson(HelpResponse));
}
var imageId = string.Format("{0}-{1}-{2}.jpg",
c.Preamble,
Nancy.Helpers.HttpUtility.UrlEncode(c.TopLine ?? string.Empty),
Nancy.Helpers.HttpUtility.UrlEncode(c.BottomLine ?? string.Empty));
if (!store.Exists(imageId))
{
var img = imageGenerator.GenerateImage(c.Preamble, c.TopLine, c.BottomLine);
if (img != null)
{
using (var ms = new MemoryStream())
{
img.Save(ms, ImageFormat.Jpeg);
ms.Seek(0, SeekOrigin.Begin);
store.Store(imageId, ms);
}
}
else
{
// We failed to generate an image; send unknown response
return(Response.AsJson(new Models.UnknownResponse()));
}
}
return(Response.AsJson(
new Models.ImageResponse(store.GetUri(imageId).ToString(),
string.Format("{0} {1}", c.TopLine, c.BottomLine))));
};
}
public virtual async Task OnMessageAsync(Message message)
{
await storageService.SaveLogAsync(Id, message);
var command = commandParser.TryParse(message.Text);
if (command != null)
{
await OnCommandMessageAsync(message, command);
}
else
{
await OnTextMessageAsync(message);
}
}
public async ValueTask Process(string data, WebApiUser user)
{
var parseResult = _parser.TryParse(data);
switch (parseResult.Error)
{
case ParseStatus.Unspecified:
await user.Write(_messageFactory.CreateConsoleLog("Invalid input.", "handler"));
return;
case ParseStatus.UnknownCommand:
await user.Write(_messageFactory.CreateConsoleLog(
"Unknown command. Please use /help to list the commands and their usages.", "handler"));
return;
case ParseStatus.NoData:
await user.Write(_messageFactory.CreateConsoleLog("This command requires data.", "handler"));
return;
case ParseStatus.InvalidSyntax:
await user.Write(
_messageFactory.CreateConsoleLog(
$"Invalid syntax. Please use /help to see the usage of that command.", "handler"));
return;
case ParseStatus.WhiteSpace:
await user.Write(
_messageFactory.CreateConsoleLog($"Invalid command prefix.", "handler"));
return;
}
parseResult.Command !.Call(user, parseResult.Tokens);
}
public static ICommand ParseOrDefault(this ICommandParser parser, string command) => parser.TryParse(command, out var c) ? c : default;
