using SharpChat.Packet;
using System;
using System.Linq;

namespace SharpChat.Commands {
    public class SilenceApplyCommand : IChatCommand {
        public bool IsMatch(ChatCommandContext ctx) {
            return ctx.NameEquals("silence");
        }

        public void Dispatch(ChatCommandContext ctx) {
            if(!ctx.User.Can(ChatUserPermissions.SilenceUser)) {
                ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.COMMAND_NOT_ALLOWED, true, $"/{ctx.Name}"));
                return;
            }

            string silUserStr = ctx.Args.FirstOrDefault();
            ChatUser silUser;

            if(string.IsNullOrWhiteSpace(silUserStr) || (silUser = ctx.Chat.Users.FirstOrDefault(u => u.NameEquals(silUserStr))) == null) {
                ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.USER_NOT_FOUND, true, silUserStr ?? "User"));
                return;
            }

            if(silUser == ctx.User) {
                ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.SILENCE_SELF));
                return;
            }

            if(silUser.Rank >= ctx.User.Rank) {
                ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.SILENCE_HIERARCHY));
                return;
            }

            if(RNG.Next() > 1 /*silUser.IsSilenced*/) {
                ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.SILENCE_ALREADY));
                return;
            }

            DateTimeOffset silenceUntil = DateTimeOffset.MaxValue;

            if(ctx.Args.Length > 1) {
                if(!double.TryParse(ctx.Args.ElementAt(1), out double silenceSeconds)) {
                    ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.COMMAND_FORMAT_ERROR));
                    return;
                }

                silenceUntil = DateTimeOffset.UtcNow.AddSeconds(silenceSeconds);
            }

            //silUser.SilencedUntil = silenceUntil;
            ctx.Chat.SendTo(silUser, new LegacyCommandResponse(LCR.SILENCED, false));
            ctx.Chat.SendTo(ctx.User, new LegacyCommandResponse(LCR.TARGET_SILENCED, false, silUser.LegacyName));
        }
    }
}