mine

os.loadAPI("version")
sleep(2)
print("AutoMiner by theTANCO "..version.versionnum)
sleep(4)
print("")

mine = true
blocknum = 0
j = 0
i = 0

function continue()
  cont = true
  while cont == true do
    print('Type "s" to shutdown, "r" to see fuel or refuel, or "c" to continue mining.')
    key = read()
    print("")
    if key == "s" or key == "S" then
      cont = false
      mine = false
      shell.run("shutdown")
    elseif key == "r" or key == "R" then
      turtle.select(16)
      turtle.refuel()
      print("Fuel level: "..turtle.getFuelLevel())
      print("To refuel, put a fuel item such as coal in item slot 16.")
      sleep(1)
      print("")
    elseif key == "c" or key == "C" then
      cont = false
      check()
    else
      print("Please type a specified letter.")
      sleep(1)
      print("")
    end
  end
end

function torches()
  if turtle.getItemCount(1) == 0 then
    print("Not enough torches to continue.")
    print("Please place more torches in item slot 1 to continue.")
    print("")
    sleep(1)
    continue()
  end
end

function fuel()
  if turtle.getFuelLevel() == 0 then
    print("Not enough fuel to continue.")
    print("Please place fuel items such as coal in item slot 16 to refuel.")
    print("")
    sleep(1)
    continue()
  end
end

function inventory()
  f = false
  while true do
    for q=1,16 do
      if turtle.getItemCount(q) > 0 then
        inv = {}
        inv[q-1] = true
      else
        inv[q-1] = false
        f = true
        break
      end
    end
    if f == false then
      turtle.turnLeft()
      turtle.turnLeft()
      return = j*9+i+1
      returning = return
      while returning > 0 do
        turtle.forward()
        returning = returning - 1
      end
      for r=3,15 do
        turtle.select(r)
        turtle.drop(64)
      end
      turtle.turnLeft()
      turtle.turnLeft()
      while returning < return do
        turtle.forward()
        returning = returning + 1
      end
    else
      break
    end
  end
end

function check()
  torches()
  fuel()
end

continue()

while mine == true do
  turtle.select(1)
  inputCheck1 = true
  while inputCheck1 == true do
    print("Mine for how many blocks?")
    print("Your input will be rounded down to a multiple of 9.")
    h=math.floor(read()/9)
    blocknum = h*9
    inputCheck2 = true
    while inputCheck2 == true do
      print("")
      textutils.slowPrint("Mining for "..blocknum.." blocks ("..h.." torches).")
      textutils.slowPrint('Type "go" to start or "stop" to retype your input.')
      confirmInput = read()
      print("")
      if confirmInput == "go" then
        inputCheck1 = false
        inputCheck2 = false
      elseif confirmInput == "stop" then
        inputCheck2 = false
      end
    end
  end
  textutils.slowPrint("Mining...")
  sleep(3)
  for j=1,h do
    check()
    for i=1,9 do
      inventory()
      while turtle.detect() == true do
        turtle.dig()
        sleep(0.5)
      end
      check()
      turtle.forward()
      turtle.digDown()
      turtle.turnLeft()
      turtle.select(2)
      turtle.placeUp()
      turtle.place()
      check()
      turtle.down()
      turtle.place()
      turtle.placeDown()
      turtle.turnRight()
      turtle.turnRight()
      turtle.place()
      check()
      turtle.up()
      turtle.place()
      turtle.turnLeft()
    end
    turtle.select(2)
    turtle.place()
    check()
    turtle.down()
    turtle.place()
    check()
    turtle.up()
    turtle.select(1)
    turtle.placeDown()
    print("Placed "..j.."/"..h.." torches.")
  end
  print("Finished mining.")
  turtle.turnLeft()
  turtle.turnLeft()
  for k=1,blocknum do
    check()
    turtle.forward()
  end
  turtle.select(2)
  turtle.digDown()
  turtle.placeDown()
  check()
  turtle.forward()
  for l=3,15 do
    turtle.select(l)
    turtle.drop(64)
  end
  turtle.turnLeft()
  turtle.turnLeft()
  turtle.select(1)
  turtle.place()
  print("")
  sleep(1)
  continue()
end
shell.run("shutdown")