-- Websocker: Used for connection between the controle webserver and Units(computers)
local ws

function Core:connect()
    ws, err = assert(http.websocket("ws://localhost:8080"));

    if not ws then
        term.setTextColor(colors.red);
        print(err);
        term.setTextColor(colors.white);
    end
end

function Core:send(package)
    if not package then
        return false, "Missing package";
    end

    if not ws then
        return false, "Websocket not initiated";
    end

    ws.send(textutils.serialiseJSON(package));
end

function Core:read()
    if not ws then
        return false, "Websocket not initiated";
    end

    return true, textutils.unserialiseJSON(ws.read())
end

function Core:download(file)
    if not ws then
        return false, "Websocket not initiated";
    end

    self:send({type = "REQUEST_FILE_INFO", file = file});

    local success, data = self:read();

    if not success then
        return false, "Failed to read: "+data;
    end

    if not data.type then
        return false, "Invalid package: "+textutils.serialiseJSON(data);
    end

    if not (data.type == "FILE_INFO") then
        return false, "Invalid package type: "+textutils.serialiseJSON(data);
    end

    if not data.exists then
        return false, "File is missing from server"
    end

    self:send({type = "REQUEST_FILE_DATA", file = file})

    local success, data = self:read();


end