using SharpChat.Bans;
using SharpChat.SockChat.S2CPackets;

namespace SharpChat.ClientCommands;

public class PardonUserClientCommand(BansClient bansClient) : ClientCommand {
    public bool IsMatch(ClientCommandContext ctx) {
        return ctx.NameEquals("pardon")
            || ctx.NameEquals("unban");
    }

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

        if(!ctx.User.Can(UserPermissions.BanUser | UserPermissions.KickUser)) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.COMMAND_NOT_ALLOWED, true, $"/{ctx.Name}"));
            return;
        }

        string? unbanUserTarget = ctx.Args.FirstOrDefault();
        if(string.IsNullOrWhiteSpace(unbanUserTarget)) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.COMMAND_FORMAT_ERROR));
            return;
        }

        string unbanUserDisplay = unbanUserTarget;
        User? unbanUser = ctx.Chat.Users.FirstOrDefault(u => u.NameEquals(unbanUserTarget));
        if(unbanUser == null && long.TryParse(unbanUserTarget, out long unbanUserId))
            unbanUser = ctx.Chat.Users.FirstOrDefault(u => u.UserId == unbanUserId.ToString());
        if(unbanUser != null) {
            unbanUserTarget = unbanUser.UserId;
            unbanUserDisplay = unbanUser.UserName;
        }

        BanInfo? banInfo = await bansClient.BanGetAsync(unbanUserTarget);
        if(banInfo?.Kind != BanKind.User) {
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.USER_NOT_BANNED, true, unbanUserDisplay));
            return;
        }

        if(await bansClient.BanRevokeAsync(banInfo))
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.USER_UNBANNED, false, unbanUserDisplay));
        else
            await ctx.Chat.SendTo(ctx.User, new CommandResponseS2CPacket(msgId, LCR.USER_NOT_BANNED, true, unbanUserDisplay));
    }
}