--
-- ~~~ response tag utils
--

require("src/utils")

-- get tag types
function gettagtypes (response, offset)

    local high = table.extracthex(response, offset, offset + 7)
    local low = table.extracthex(response, offset + 8, offset + 15)

    return {
        high = high,
        low = low
    }

end

-- get tag values
function gettagvalue (response, offset)

    local valuetypes = gettagtypes(response, offset)

    local valuelength = tonumber(table.extracthex(response, offset + 16, offset + 19), 16)
    local valueoffset = offset + 20
    local value = ""

    if valuelength > 0 then

        value = table.extracthex(response, valueoffset, valueoffset + valuelength)
        valueoffset = valueoffset + valuelength

    end

    return {
        tag = {
            types = valuetypes,
            value = value
        },
        endoffset = valueoffset
    }

end

-- return
return {
    types = gettagtypes,
    get = gettagvalue
}