FurnaceTender

coalbox=peripheral.wrap("back")
orebox=peripheral.wrap("top")
sides={"north","south","west","east"}
if (fs.exists("choices") == false) then --Check if this is first time run, no saved choices on file
    while true do --Asks for side for attached inventory
            print("Which direction is the back of the computer facing?")
            for i=1, #sides do
                print(i..". "..sides[i])
            end
            local answer = read()
            if tonumber(answer)==nill then
                print("-Wrong answer, input not a number-")
            else
                local answerv = tonumber(string.format("%." .. 0 .. "f", answer))
                if (0 < answerv and answerv <= 4) then
                    side1=answerv
                    --print("Side ", sides[side1], " chosen")
                    break
                else
                    print("-Wrong answer, input does not match number of sides-")
                end
            end
    end
local file = fs.open("choices","w")
file.writeLine("side1="..tostring(side1))
file.close()
end
os.loadAPI("choices") -- Reads choices from file
local side1 = choices.side1

while true do
--fuel refill
refueled=false
nofuel=false
while refueled==false and nofuel==false do
    for i=1,coalbox.size() do
        if coalbox.getItemMeta(i) ~= nil then
            coalbox.pushItems("up",i,64,2)
            refueled=true
            break
        elseif i==coalbox.size() then
            --print("Fuel box empty")
            nofuel=true
            --print("nofuel true")
            break
        else
            sleep(0.05)
        end
    end
end

--load smelting material
reloaded=false
noore=false
output=true
while reloaded==false and noore==false do
    orebox.pullItems(sides[side1],3,64,orebox.size())
    if orebox.getItemMeta(orebox.size()) == nil then
        output=false
        --print("output false")
    end
    orebox.pushItems("up",orebox.size(),64)

    for i=1,orebox.size()-1 do
        if orebox.getItemMeta(i) ~= nil then
            orebox.pushItems(sides[side1],i,64,1)
            reloaded=true
            break
        elseif i==orebox.size()-1 then
            --print("Ore box empty")
            noore=true
            --print("noore true")
            break
        else
            sleep(0.05)
        end
    end
end

if noore==true and output==false then
    print("No ore, sleeping 8s")
    redstone.setOutput("front", true)
    sleep(8)
elseif nofuel==true and output==false then
    print("No fuel, sleeping 30s")
    redstone.setOutput("front", true)
    sleep(30)
else
    redstone.setOutput("front", false)
    sleep(1)
end

end