permaminer

io.write("Length of tunnels?                 ")
length = 100


io.write("How many tunnels?                  ")
tunnels = 99999


io.write("\nCoal in slot 1, chests in slot 2.")
io.write("\nPress enter to continue.         ")
confirmation = true

isEven = true
function isInvFull()
    x = 0
    for i = 1, 16, 1 do
        turtle.select(i)
        if turtle.getItemDetail() ~= nil then
            x = x + 1
        end
    end
    if x >= 14 then
        return true
    end
end


function refuel()
    if turtle.getFuelLevel() < tonumber(length) + 10 then
        turtle.select(getItemIndex("minecraft:coal"))
        turtle.transferTo(1)
        turtle.select(1)
        turtle.refuel(1)
    end
end


function emptyInv()
    y = isEven
    if y then
        turtle.turnLeft()
        while turtle.detect() do
            turtle.dig()
        end
        turtle.forward()
        while turtle.detectUp() do
            turtle.digUp()
        end
        turtle.back()
        turtle.select(2)
        turtle.place()
        for i = 3, 16, 1 do
            turtle.select(i)
            if turtle.getItemDetail() ~= nil then
                turtle.drop()
            end
        end
        turtle.turnRight()
    else

        turtle.turnRight()
        while turtle.detect() do
            turtle.dig()
        end
        turtle.forward()
        while turtle.detectUp() do
                turtle.digUp()
        end
        turtle.back()
        turtle.select(2)
        turtle.place()
        for i = 3, 16, 1 do
            turtle.select(i)
            if turtle.getItemDetail() ~= nil then
                turtle.drop()
            end
        end
        turtle.turnLeft()
    end
end


function getItemIndex(itemName)
    for slot = 1, 16, 1 do
        local item = turtle.getItemDetail(slot)
        if item ~= nil then
            if item.name == itemName then
                return slot
            end
        end
    end

end


function emptyEnderInv()
    turtle.turnLeft()
    while turtle.detect() do
        turtle.dig()
    end
    turtle.select(getItemIndex("enderstorage:ender_storage"))
    turtle.transferTo(2)
    turtle.select(2)
    turtle.place()
    for i = 3, 16 ,1 do
        turtle.select(i)
        if turtle.getItemDetail() ~= nil then
            turtle.drop()
        end
    end
    turtle.dig()
    turtle.turnRight()
    turtle.select(getItemIndex("enderstorage:ender_storage"))
    turtle.transferTo(2)
end



if confirmation then
    refuel()
    for i = 1, tonumber(tunnels), 1 do
        for i = 1, tonumber(length), 1 do
            while turtle.detect() do
                turtle.dig()
            end
            turtle.forward()
            turtle.digDown()
            turtle.digUp()
            if turtle.getItemDetail(14) ~= nil then emptyEnderInv() end
        end
        refuel()
        isEven = not isEven
        if isEven then
            turtle.turnLeft()
            while turtle.detect() do
                turtle.dig()
            end
            turtle.forward()
            while turtle.detectUp() do
                turtle.digUp()
            end
            turtle.digDown()
            turtle.turnLeft()
        else
            turtle.turnRight()
            while turtle.detect() do
                turtle.dig()
            end
            turtle.forward()
            while turtle.detectUp() do
                turtle.digUp()
            end
            turtle.digDown()
            turtle.turnRight()
        end
    end
else print("canceled")
end