/// <summary>
/// Gets the prefix of the current command context.
/// </summary>
/// <param name="prefixing">The prefixing service to work with.</param>
/// <param name="context">The command context to look for.</param>
/// <returns>The context's prefix or the default prefix if the context or its prefix is unset.</returns>
public static async Task <string> GetPrefixAsync(this IContextingService prefixing, ICommandContext context)
{
if (!prefixing.IsDbPrefixContext(context))
{
return(prefixing.DefaultPrefix);
}
IDbPrefixContext prefixContext = await prefixing.FindDbPrefixContextAsync(context).ConfigureAwait(false);
return(prefixContext?.Prefix ?? prefixing.DefaultPrefix);
}
/// <summary>
/// Gets the prefix and lock context of the bot.
/// </summary>
private async Task <(string prefix, IDbLockableContext lockContext)> GetPrefixAndLockContextAsync(
ICommandContext context)
{
using (var db = Contexting.GetCommandContextDb()) {
IDbPrefixContext prefixContext = await Contexting.FindDbPrefixContextAsync(db, context, false).ConfigureAwait(false);
string prefix = prefixContext.GetPrefix(Contexting);
if (prefixContext is IDbLockableContext lockContext)
{
return(prefix, lockContext);
}
else
{
return(prefix, await Contexting.FindDbLockableContextAsync(db, context, false).ConfigureAwait(false));
}
}
}
/// <summary>
/// Sets the prefix for the current command context.
/// </summary>
/// <param name="prefixing">The prefixing service to work with.</param>
/// <param name="context">The command context to look for.</param>
/// <param name="newPrefix">The new prefix to set the context to.</param>
/// <returns>
/// True if the prefix was set, false if it was already set to this, and null if the prefix cannot be
/// changed.
/// </returns>
public static async Task <bool?> SetPrefixAsync(this IContextingService prefixing, ICommandContext context, string newPrefix)
{
if (!prefixing.IsDbPrefixContext(context))
{
return(null);
}
using (var db = prefixing.GetCommandContextDb()) {
IDbPrefixContext prefixContext = await prefixing.FindDbPrefixContextAsync(db, context, true).ConfigureAwait(false);
if (prefixContext.Prefix != newPrefix)
{
prefixContext.Prefix = newPrefix;
db.ModifyOnly(prefixContext, pc => pc.Prefix);
await db.SaveChangesAsync().ConfigureAwait(false);
return(true);
}
return(false);
}
}
/// <summary>
/// Gets the prefix of the current prefix context.
/// </summary>
/// <param name="prefixContext">The prefix context to look in.</param>
/// <param name="prefixing">The prefixing context to get the default prefix from.</param>
/// <returns>The context's prefix or the default prefix if the context or its prefix is unset.</returns>
public static string GetPrefix(this IDbPrefixContext prefixContext, IContextingService prefixing)
{
return(prefixContext?.Prefix ?? prefixing.DefaultPrefix);
}
