glassEnergy

local sol = peripheral.wrap("top")
local glass = peripheral.wrap("right")
local batt = peripheral.wrap("back")

--for graphing
local posX = 15
local posY = 50
local offsetX = posX+5
local offsetY = posY+5

local sizeX = 40
local sizeY = 180
local backX = sizeX-10
local backY = sizeY-10


local function drawGraph(percent)
    --add frame
    glass.addBox(posX, posY, sizeX, sizeY, 0xFFFFFF, .5)
    --add background
    glass.addBox(offsetX, offsetY, backX, backY, 0x500000, .7)

    --determine vertical size of bar
    local size = backY * (percent/100)
    --determine vertical offset of bar
    local offset = offsetY + (backY-size)

    --add bar
    glass.addBox(offsetX, offset, backX, size, 0xEB0000, .7)
end

local function updateMain()
    local maxE = sol.getMaxEnergyStored()
    local currentE = sol.getEnergyStored()
    local percent

    if currentE <= 0 then
        percent = 0
    else
        percent = currentE/maxE * 100
    end

    glass.addText(1,40,"Solar Energy", 0xFFFFFF)
    drawGraph(percent)
    print("percent: ".. percent)
end

local function updateBackup()
    local maxE = batt.getMaxEnergyStored()
    local currentE = batt.getEnergyStored()
    local percent

    if currentE == maxE then
        updateMain()
        return
    else
        percent = currentE/maxE * 100
    end

    glass.addText(1,40,"Backup Energy", 0xFFFFFF)
    drawGraph(percent)
end

while true do
    sleep()
    glass.clear()
    updateBackup()
    glass.sync()
end