RegexBot/Feature/AutoMod/Responses/RoleManipulation.cs

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using Discord.WebSocket;
using Noikoio.RegexBot.ConfigItem;
using System;
using System.Linq;
using System.Threading.Tasks;
namespace Noikoio.RegexBot.Feature.AutoMod.Responses
{
/// <summary>
/// Manipulates a given user's role.
/// Parameters: (command) (target) (role ID)
/// </summary>
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class RoleManipulation : ResponseBase
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{
enum ManipulationType { None, Add, Remove }
readonly ManipulationType _action;
readonly string _target;
readonly EntityName _role;
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public RoleManipulation(ConfigItem rule, string cmdline) : base(rule, cmdline)
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{
var line = cmdline.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (line.Length != 3)
throw new RuleImportException("Incorrect number of parameters.");
// Ensure the strings here match those in Response._commands
switch (line[0].ToLowerInvariant())
{
case "addrole":
case "grantrole":
_action = ManipulationType.Add;
break;
case "delrole":
case "removerole":
case "revokerole":
_action = ManipulationType.Remove;
break;
default:
_action = ManipulationType.None;
break;
}
if (_action == ManipulationType.None)
throw new RuleImportException("Command not defined. This is a bug.");
_target = line[1];
_role = new EntityName(line[2], EntityType.Role);
}
public override async Task Invoke(SocketMessage msg)
{
// Find role
SocketRole rtarget;
var g = ((SocketGuildUser)msg.Author).Guild;
if (_role.Id.HasValue) rtarget = g.GetRole(_role.Id.Value);
else rtarget = g.Roles.FirstOrDefault(r =>
string.Equals(r.Name, _role.Name, StringComparison.OrdinalIgnoreCase));
if (rtarget == null)
{
await Log("Error: Target role not found in server.");
return;
}
// Find user
SocketGuildUser utarget;
if (_target == "@_") utarget = (SocketGuildUser)msg.Author;
else
{
utarget = g.Users.FirstOrDefault(u =>
{
if (string.Equals(u.Nickname, _target, StringComparison.OrdinalIgnoreCase)) return true;
if (string.Equals(u.Username, _target, StringComparison.OrdinalIgnoreCase)) return true;
return false;
});
}
if (utarget == null)
{
await Log("Error: Target user not found in server.");
return;
}
// Do action
if (_action == ManipulationType.Add)
await utarget.AddRoleAsync(rtarget);
else if (_action == ManipulationType.Remove)
await utarget.RemoveRoleAsync(rtarget);
}
}
}