OC_StripMiningTurtle

local component = require("component")
local computer = require("computer")
local inventory = component.inventory_controller
local robot = require("robot")
local generator = component.generator

if generator == nil then
  print("No generator component found, please install!")
end

local status = "running"
local StripsMined = 0


function refuel()
  -- try to refuel from inventory
  for i = 1, 16 do
    robot.select(i)
    generator.insert()
  end

  -- Check if we did refuel
  if generator.count() > 1 then
    return true
  else
    return false
  end
end



-- Check fuel in generator
function checkFuel()
  if generator.count() > 5 then
    return true
  else
    -- No fuel in generator, try to insert fuel from inventory
    refuel()

    if generator.count() > 5 then
      return true
    else
      return false
    end
  end
end



-- Check Energy in robot
function checkEnergy()
  Energy = computer.energy() / computer.maxEnergy() * 100
  if Energy < 10 and checkFuel() == false then
    return false
  else
    return true
  end
end



-- Check held item durability
function checkDurability()
  -- robot.durability() returns durability percentage from 0-1
  if robot.durability() == nil then
    print("Robot has no tool in tool slot")
    return false
  end
  if robot.durability() > 0.05 then
    return true
  else
    return false
  end
end



-- Check if we have space in the inventory

function checkInventorySpace()
  for i = 1, 16 do
    robot.select(i)
    if robot.space() == 64 then
      return true
    else
    end
  end
  return false
end


-- Notify chest placement position
print("Please place a chest directly to the right of the robot")
os.sleep(1)




-- Check if we have fuel in the generator
if generator.count() < 5 then
  print("WARNING: Low amounts of fuel in generator!")
  os.sleep(0.5)
  print("Do you wish to refuel now? (Y / N)")
  refuelAction = io.read()
else
  refuelAction = nil
end

if refuelAction ~= nil and refuelAction == "Y" then
 refuel()
else
end



print("Input the depth of the stripmine..")
depth = io.read()
print("Input amount of strips..")
amount = io.read()



-- Move forward Function

function moveForward()
  if robot.detect(forward) == true then
    robot.swing()
    robot.forward()
  else
    robot.forward()
  end
  while robot.detectUp() == true do
    robot.swingUp()
    os.sleep(1) -- wait in case sand or gravel
  end
end



-- Return to chest location
-- Call only after exiting a strip facing outward


function returnToChest()

  -- turn to face chest
  robot.turnLeft()

  if StripsMined > 0 then
    for i = 1, StripsMined do
      moveForward()
      moveForward()
      moveForward()
    end
  end

  if robot.detect(front) == true then

    local front = 3

    for i = 1, 16 do
      robot.select(i)
      if robot.space() ~= 64 then
        for chestSlot = 1, 27 do
          if inventory.getStackInSlot(front,chestSlot) == nil then
            inventory.dropIntoSlot(front, chestSlot, 64)
          end
        end
      end
    end

    --wait for emptying
    for k = 1, 16 do
      robot.select(k)
      if robot.space() ~= 64 then
        status = "no_inv_chest_full"
        print("Chest is full..")
      end
    end

    -- Reset status if inventory was a problem
    if status == "no_inv" then
      status = "running"
    end
    robot.select(1)

  else
    print("ERROR: No Chest Found in front of expected position")
  end

  -- return to to strip mine position
  robot.turnRight()
  robot.turnRight()
  if StripsMined > 0 then
    for i = 1, StripsMined do
      moveForward()
      moveForward()
      moveForward()
    end
  end

end

-- Start Strip mining


for i = 1, amount do
  local BlocksMovedInStrip = 0

  for i = 1, depth do
    BlocksMovedInStrip = i
    if checkEnergy() == true then
      if checkDurability() == true then
        if checkInventorySpace() == true then
          moveForward()
        else
          status = "no_inv"
          print("No Inventory Space")
          break
        end
      else
        status = "no_durability"
        print("No Durability")
        break
      end
    else
      status = "no_energy"
      print("No Energy")
      break
    end
  end

  -- After first loop completed or canceled

  if status == "running" then
    robot.turnRight()
    robot.turnRight()
    for i = 1, depth do
      moveForward()
    end
  else
    if BlocksMovedInStrip > 1 then
      robot.turnRight()
      robot.turnRight()
      for i = 1, BlocksMovedInStrip do
        moveForward()
      end
    end
  end


  returnToChest()


  -- Check if we are still green
  if status == "running" then
    --robot.turnRight()
    moveForward()
    moveForward()
    moveForward()
    robot.turnRight()
    StripsMined = StripsMined + 1
  else
    robot.turnRight()
    robot.turnRight()
  end

end