protected virtual IEnumerable <string> GetTabCompletionCommands(HttpContext context)
{
ICommandProvider commands = context.RequestServices.GetRequiredService <ICommandProvider>();
ICommandExecutionEnvironment environment = context.RequestServices.GetRequiredService <ICommandExecutionEnvironment>();
foreach (ICommand cmd in commands.All(context))
{
if (environment.IsTabCompletionEnabled(cmd, context))
{
CommandInfo info = cmd.GetType().GetCommandInfo();
yield return(info.Name);
}
}
}
/// <summary>
/// Checks if the command execution is authorized.
/// </summary>
protected virtual async Task <bool> IsAuthorizedAsync(CommandContext context)
{
ICommandExecutionEnvironment environment = context.HttpContext.RequestServices.GetRequiredService <ICommandExecutionEnvironment>();
bool authorized = await environment.IsAuthorizedAsync(context);
if (!authorized)
{
CommandInfo info = context.Command.GetType().GetCommandInfo();
_logger.LogInformation($"Command '{info.Name}' execution is unauthorized.");
}
return(authorized);
}
public async Task ExecuteAsync(CommandBuilder builder, CommandContext context)
{
await context.OnExecuteAsync(() =>
{
// required services
ICommandProvider commands = context.HttpContext.RequestServices.GetRequiredService <ICommandProvider>();
ICommandExecutionEnvironment environment = context.HttpContext.RequestServices.GetRequiredService <ICommandExecutionEnvironment>();
int builtInCount = 0;
int externalCount = 0;
var items = new List <CommandInfo>();
foreach (ICommand cmd in commands.All(context.HttpContext))
{
if (!environment.IsVisibleForHelp(cmd, context.HttpContext))
{
continue;
}
if (IsBuiltInCommand(cmd))
{
builtInCount++;
}
else
{
externalCount++;
}
items.Add(cmd.GetType().GetCommandInfo());
}
string[] lines = LineFormatter.CreateLines(items, x => x.Name, x => x.Description, true, false);
if (builtInCount > 0)
{
context.WriteText("Built-in commands:");
for (int i = 0; i < builtInCount; i++)
{
string line = lines[i];
context.WriteText(line);
}
}
if (externalCount > 0)
{
if (builtInCount > 0)
{
context.WriteText("");
}
context.WriteText("Custom commands:");
for (int i = builtInCount; i < lines.Length; i++)
{
string line = lines[i];
context.WriteText(line);
}
}
if (!lines.Any())
{
context.WriteError("No commands found.");
}
return(context.Exit());
});
}
