local moduleName = ...
local moduleSettings
if hudSettings[moduleName] then
    moduleSettings = hudSettings[moduleName]
else
    local settingsFile = fs.open("/Hud/hudSettings","a")
    settingsFile.write(moduleName..[[
 = {
    coreComputerID = 0,
    coreComputerProtocol = "energyCore",
    rfSuffixes = {"K","M","G","T","P","E","Z","Y"},
    alpha = 1,
    barColor = 0xff0000,
    textColor = 0xffff00,
    y = 1,
    x = 1,
    height = 9,
    width = 350,
}

]])
    settingsFile.close()
    os.loadAPI("/Hud/hudSettings")
    moduleSettings = hudSettings[moduleName]
end

function formatRF(rf,forceSign)
    local sign
    if rf < 0 then
        sign = "-"
        I = 0-I
    elseif rf > 0 then
        sign = forceSign and "+" or ""
    else
        return "0RF"
    end

    local log = math.floor(math.log(rf)/math.log(1000))
    return sign..string.format("%0.3f",rf/1000^log)..(log > 0 and moduleSettings.rfSuffixes[log] or "").."RF"
end

canvas.addRectangle(
    (moduleSettings.x + hudSettings.x-1) * hudSettings.scale,
    (moduleSettings.y + hudSettings.y-1) * hudSettings.scale,
    (moduleSettings.width + 2) * hudSettings.scale,
    (moduleSettings.height + 2) * hudSettings.scale,
    hudSettings.backgroundColor*256 + math.floor(moduleSettings.alpha * hudSettings.alpha * 255)
)

local bar = {
    size = {
        moduleSettings.width * hudSettings.scale,
        moduleSettings.height * hudSettings.scale
    },
    object = canvas.addRectangle(
        (moduleSettings.x + hudSettings.x) * hudSettings.scale,
        (moduleSettings.y + hudSettings.y) * hudSettings.scale,
        0, 0,
        moduleSettings.barColor*256 + math.floor(moduleSettings.alpha * hudSettings.alpha * 255)
    ),
}

local text = {
    object = canvas.addText(
        {
            (1+moduleSettings.x+hudSettings.x) * hudSettings.scale,
            (1+moduleSettings.y+hudSettings.y) * hudSettings.scale
        },
        "",
        moduleSettings.textColor*256 + math.floor(moduleSettings.alpha * hudSettings.alpha * 255)
    )
}
text.object.setScale(moduleSettings.height * hudSettings.scale / 9)

while true do
    local data
    repeat
        rednet.send(
            moduleSettings.coreComputerID, "",
            moduleSettings.coreComputerProtocol
        )

        _, data = rednet.receive(moduleSettings.coreComputerProtocol, 1)
    until data
    bar.object.setSize(bar.size[1]*data.RF/data.MaxRF, bar.size[2])
    text.object.setText(formatRF(data.RF).."/"..formatRF(data.MaxRF).." ("..string.format("%0.2f",data.RF/data.MaxRF*100,true).."%)")
end