Quarry recharger turtle

local location = ""

function teleport()
   turtle.turnRight()
   tp = peripheral.wrap("bottom")
   turtle.turnLeft()
   tp.teleport()
end

function checkFull()
   greader = peripheral.wrap("right")
   data = greader.get()
   while not data["Full Energy"] do
      sleep(2)
      data=greader.get()
   end
   turtle.dig()
end

function checkEmpty()
   greader=peripheral.wrap("right")
   data = greader.get()
   while not data["No Energy"] do
      sleep(2)
      data = greader.get()
   end
   turtle.dig()
end

function checkLoc()
   loc = turtle.detectUp()
   if loc == true then
      print("I am at the quarry")
      location = "Quarry"
   else
      print("I am at the charge station")
      location = "Charging"
   end
end

function getFuel()
   turtle.turnLeft()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.turnRight()
   turtle.forward()
   turtle.forward()
   turtle.suckDown()
   turtle.refuel()
   turtle.back()
   turtle.back()
   turtle.turnRight()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.forward()
   turtle.turnLeft()
end


function checkFuel()
   fuel = turtle.getFuelLevel()
   print("My fuel level:"..tostring(fuel))
   if fuel < 2500 then
      print("I need fuel")
      getFuel()
      print("My fuel level:"..tostring(turtle.getFuelLevel()))
   end
end

while true do
   checkLoc()
   if location == "Quarry" then
      turtle.place()
      checkEmpty()
      teleport()
   else
      turtle.place()
      checkFuel()
      checkFull()
      teleport()
   end
end