The block command for commands filter in DPE

Thread.new(decoy) do |decoy|
    if args[1] == "+"
        if args[2].class == String
            if args[2][/[^\d]/]
                id = getId(args[2])
                if id and !id[/[^\d]/]
                    if !decoy["block"].index(id)
                        decoy["block"].push(id)
                        File.binwrite("filters/block.list",decoy["block"].to_s)
                        decoy["<"].print(
                            packet(
                                {
                                    "m"=>{
                                        "t"=>"#{id} was added to blocklist.",
                                        "u"=>"0",
                                        "i"=>"1"
                                    }
                                }
                            )
                        )
                    else
                        decoy["<"].print(
                            packet(
                                {
                                    "m"=>{
                                        "t"=>"#{args[2]} is already blocked.",
                                        "u"=>"0",
                                        "i"=>"1"
                                    }
                                }
                            )
                        )
                    end
                else
                    decoy["<"].print(
                        packet(
                            {
                                "m"=>{
                                    "t"=>"Invalid username: &quot;#{args[2]}&quot;.",
                                    "u"=>"0",
                                    "i"=>"1"
                                }
                            }
                        )
                    )
                end
            else
                decoy["block"].push(args[2])
                File.binwrite("filters/block.list",decoy["block"].to_s)
                decoy["<"].print(
                    packet(
                        {
                            "m"=>{
                                "t"=>"#{args[2]} was added to blocklist.",
                                "u"=>"0",
                                "i"=>"1"
                            }
                        }
                    )
                )
            end
        end
    elsif args[1] == "-"
        if args[2][/[^\d]/]
            id = getId(args[2])
            if id and !id[/[^\d]/]
                if decoy["block"].index(id)
                    decoy["block"].delete(id)
                    File.binwrite("filters/block.list",decoy["block"].to_s)
                    decoy["<"].print(
                        packet(
                            {
                                "m"=>{
                                    "t"=>"#{id} was removed from blocklist.",
                                    "u"=>"0",
                                    "i"=>"1"
                                }
                            }
                        )
                    )
                else
                    decoy["<"].print(
                        packet(
                            {
                                "m"=>{
                                    "t"=>"#{args[2]} is not blocked.",
                                    "u"=>"0",
                                    "i"=>"1"
                                }
                            }
                        )
                    )
                end
            else
                decoy["<"].print(
                    packet(
                        {
                            "m"=>{
                                "t"=>"Invalid username: &quot;#{args[2]}&quot;.",
                                "u"=>"0",
                                "i"=>"1"
                            }
                        }
                    )
                )
            end
        else
            decoy["block"].delete(args[2])
            File.binwrite("filters/block.list",decoy["block"].to_s)
            decoy["<"].print(
                packet(
                    {
                        "m"=>{
                            "t"=>"#{args[2]} was removed from blocklist.",
                            "u"=>"0",
                            "i"=>"1"
                        }
                    }
                )
            )
        end
    else
        decoy["<"].print(
            packet(
                {
                    "m"=>{
                        "t"=>"_//block +/- ID/USERNAME",
                        "u"=>"0",
                        "i"=>"1"
                    }
                }
            )
        )
    end
end