using System.Text;

namespace SharpChat.SockChat.PacketsS2C {
    public class UsersPopulateS2CPacket : ISockChatS2CPacket {
        public record ListEntry(long Id, string Name, Colour Colour, int Rank, UserPermissions Perms, bool Visible);

        private readonly ListEntry[] Entries;

        public UsersPopulateS2CPacket(ListEntry[] entries) {
            Entries = entries;
        }

        public string Pack() {
            StringBuilder sb = new();

            sb.AppendFormat("7\t0\t{0}", Entries.Length);

            foreach(ListEntry entry in Entries)
                sb.AppendFormat(
                    "\t{0}\t{1}\t{2}\t{3} {4} {5} {6} {7}\t{8}",
                    entry.Id,
                    entry.Name,
                    entry.Colour,
                    entry.Rank,
                    entry.Perms.HasFlag(UserPermissions.KickUser) ? 1 : 0,
                    entry.Perms.HasFlag(UserPermissions.ViewLogs) ? 1 : 0,
                    entry.Perms.HasFlag(UserPermissions.SetOwnNickname) ? 1 : 0,
                    entry.Perms.HasFlag(UserPermissions.CreateChannel) ? (
                        entry.Perms.HasFlag(UserPermissions.SetChannelPermanent) ? 2 : 1
                    ) : 0,
                    entry.Visible ? 1 : 0
                );

            return sb.ToString();
        }
    }
}