lavaRefuel

term.clear()
term.setCursorPos(1, 1)
print("minimum fuel-level: ")
print("explore (y/n): ")
print("stationary (y/n): ")

term.setCursorPos(20, 1)
minFuelLevel = read()
term.setCursorPos(15, 2)
explore = read()
term.setCursorPos(19, 3)
stationary = read()

if minFuelLevel == "full"then
    minFuelLevel = turtle.getFuelLimit()
else
    minFuelLevel = tonumber(minFuelLevel)
end

if explore == "y" then
    explore = true
else
    explore = false
end

if stationary == "y" then
    stationary = true
else
    stationary = false
end
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function findBucket()
    for i=1,16 do
        local itemD = turtle.getItemDetail(i)
        if not (itemD==nil) then
            if itemD.name=="minecraft:bucket" then
                turtle.select(i)
                return true
            end
        end
    end
    return false
end


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function forward()
    for i=1,10 do
        if turtle.forward() then
            return true
        end
        turtle.attack()
    end
    return false
end

function down()
    for i=1,10 do
        if turtle.down() then
            return true
        end
    end
    return false
end

function up()
    while not turtle.up() do
        turtle.digUp()
        turtle.attackUp()
    end
end

function backTrack()
    turtle.turnLeft()
    turtle.turnLeft()

    for i, dir in ipairs(moved) do
        if dir=="f" then
            forward()
        else
            up()
        end
    end
end

-----------------------------------------------------------------------------------------
paintutils.drawFilledBox(1, 1, 39, 19, colors.red)
term.setBackgroundColor(colors.red)
term.setTextColor(colors.white)
term.setCursorPos(12, 7)
term.write("nu bucket")
while not findBucket() do
    sleep(0.5)
end

paintutils.drawFilledBox(1, 1, 39, 19, colors.orange)
term.setBackgroundColor(colors.orange)
term.setTextColor(colors.white)
term.setCursorPos(12, 7)
term.write("filling up")
moved = {}
if explore then
    hasBlock, blockData = turtle.inspectDown()
    while ((not (blockData.name == "minecraft:lava")) or blockData.name==nil) do
        if (not hasBlock) then
            if not down() then
                backTrack()
                paintutils.drawFilledBox(1, 1, 39, 19, colors.orange)
                term.setBackgroundColor(colors.orange)
                term.setTextColor(colors.white)
                term.setCursorPos(2, 7)
                term.write("obstacle Found while exploring")

                os.pullEvent("key")

                os.reboot()
            else
                table.insert(moved, 1, "d")
            end

        else
            if not forward() then
                backTrack()
                paintutils.drawFilledBox(1, 1, 39, 19, colors.orange)
                term.setBackgroundColor(colors.orange)
                term.setTextColor(colors.white)
                term.setCursorPos(2, 7)
                term.write("obstacle Found while exploring")

                os.pullEvent("key")

                os.reboot()
            else
                table.insert(moved, 1, "f")
            end
        end
        hasBlock, blockData = turtle.inspectDown()
    end
end

if not findBucket() then
    paintutils.drawFilledBox(1, 1, 39, 19, colors.red)
    term.setBackgroundColor(colors.red)
    term.setTextColor(colors.white)
    term.setCursorPos(12, 7)
    term.write("no bucket")
    backTrack()
    os.pullEvent("key")

    os.reboot()
end

while turtle.getFuelLevel() <= minFuelLevel do
    turtle.placeDown()
    turtle.refuel()
    if not stationary then
        if forward() then
            table.insert(moved, 1, "f")
        else
            backTrack()
            paintutils.drawFilledBox(1, 1, 39, 19, colors.orange)
            term.setBackgroundColor(colors.orange)
            term.setTextColor(colors.white)
            term.setCursorPos(2, 7)
            term.write("obstacle Found while filling")

            os.pullEvent("key")

            os.reboot()
        end
    end
end

backTrack()

paintutils.drawFilledBox(1, 1, 39, 19, colors.lime)
term.setBackgroundColor(colors.lime)
term.setTextColor(colors.white)
term.setCursorPos(12, 7)
term.write("finished")

os.pullEvent("key")

os.reboot()