using SharpChat.SockChat.S2CPackets;
using SharpChat.Users;
using System.Net;

namespace SharpChat.ClientCommands;

public class RemoteAddressClientCommand : ClientCommand {
    public bool IsMatch(ClientCommandContext ctx) {
        return ctx.NameEquals("ip")
            || ctx.NameEquals("whois");
    }

    public async Task Dispatch(ClientCommandContext ctx) {
        long msgId = ctx.Chat.RandomSnowflake.Next();

        if(!ctx.User.Permissions.HasFlag(UserPermissions.ViewIPAddress)) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.COMMAND_NOT_ALLOWED, true, "/ip"));
            return;
        }

        string? ipUserStr = ctx.Args.FirstOrDefault();
        User? ipUser;

        if(string.IsNullOrWhiteSpace(ipUserStr) || (ipUser = ctx.Chat.Users.GetUserByLegacyName(ipUserStr)) == null) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.USER_NOT_FOUND, true, ipUserStr ?? "User"));
            return;
        }

        foreach(IPEndPoint ep in ctx.Chat.Sessions.GetRemoteEndPoints(ipUser))
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.IP_ADDRESS, false, ipUser.UserName, ep.Address));
    }
}