SethDiscordBot/DiscordBotCore/Others/DiscordPermissions.cs

using System.Linq;
using Discord;
using Discord.WebSocket;

namespace DiscordBotCore.Others;

public static class DiscordPermissions
{
    /// <summary>
    ///     Checks if the role has the specified permission
    /// </summary>
    /// <param name="role">The role</param>
    /// <param name="permission">The permission</param>
    /// <returns></returns>
    public static bool HasPermission(this IRole role, GuildPermission permission)
    {
        return role.Permissions.Has(permission);
    }

    /// <summary>
    ///     Check if user has the specified role
    /// </summary>
    /// <param name="user">The user</param>
    /// <param name="role">The role</param>
    /// <returns></returns>
    public static bool HasRole(this SocketGuildUser user, IRole role)
    {
        return user.Roles.Contains(role);
    }
    /// <summary>
    ///     Check if user has the specified permission
    /// </summary>
    /// <param name="user">The user</param>
    /// <param name="permission">The permission</param>
    /// <returns></returns>
    public static bool HasPermission(this SocketGuildUser user, GuildPermission permission)
    {
        return user.Roles.Any(role => role.HasPermission(permission)) || user.Guild.Owner == user;
    }

    /// <summary>
    ///     Check if user is administrator of server
    /// </summary>
    /// <param name="user">The user</param>
    /// <returns></returns>
    public static bool IsAdmin(this SocketGuildUser user)
    {
        return user.HasPermission(GuildPermission.Administrator);
    }

    /// <summary>
    ///     Check if user is administrator of server
    /// </summary>
    /// <param name="user">The user</param>
    /// <returns></returns>
    public static bool IsAdmin(this SocketUser user)
    {
        return IsAdmin((SocketGuildUser)user);
    }
}