--Follow the instructions below in order
--You will need, 1 advanced mining turtle, 1 bc factory mining well, 1 tesseract from thermal expansion, 1 ender chest from ender storage, 2 chicken chunks chunk loaders, and some fuel for your turtle
--Place down an advanced mining turtle high in the air away from obstacles facing some direction in a location of choice
--Place a mining well from bc factory in front of the turtle
--Place an ender chest from ender storage on top
--Place a thermal expansion tesseract on top of the mining well and let the turtle collect items
--Additionally put a fuel source inside of the turtles inventory like coal
--Put 1 chunk loader from chicken chunks in the turtles inventory and now place down a chunk loader behide the turtle
--Now run this program on the turtle
--If all of the above steps are followed correctly then the turtle should automatically move itself forward along with all its items
--It will also refuel itself constantly when its fuel level is below 50000 and also keep chunks loaded

function refuel()
	fuel = turtle.getFuelLevel()
	--Checks if fuel level has dropped below 50000, note the advanced turtles hold 100000 so this is 50%
	print("Checking fuel level...")
	print("Current fuel level is " .. fuel)
	if fuel < 50000 then
		position = 1
		print("Fuel level " .. fuel .. " is below 50000")
		print("Refueling...")
		
		while position < 17 do
			turtle.select(position)
			turtle.refuel()
			position = position+1
		end
		fuel = turtle.getFuelLevel()
	end
	if fuel < 10 then
		print("Fuel level too low to operate. Going to wait 10 seconds then check for fuel.")
		os.sleep(10)
		refuel()
	end
	print("Done refueling. Final fuel level is " .. fuel)
end

function clean()
	--Removes the mining well, the ender chest and the tesseract and then moves forward
	print("Cleaning up...")
	turtle.digUp()
	turtle.dig()
	turtle.up()
	turtle.dig()
	turtle.down()
	print("Done cleaning. Now juggling chunk loaders...")
	
	notFound = true
	while notFound do
		position = 1
		print("Looking for chunk loader...")
		while position < 17 do
			turtle.select(position)
			if turtle.getItemCount(position) > 0 then
				--Nil check
				item = turtle.getItemDetail()
				if item ~= nil then
					if item.name == "ChickenChunks:chickenChunkLoader" then
						print("Chunk loader found!")
						notFound = false
						print("Placing and recyling old chunk loader...")
						turtle.placeUp()
						turtle.turnRight()
						turtle.turnRight()
						turtle.dig()
						turtle.back()
						notFoundTwo = true
						while notFoundTwo do
							positiontwo = 1
							print("Looking for chunk loader...")
							while positiontwo < 17 do
								turtle.select(position)
								if turtle.getItemCount(positiontwo) > 0 then
									--Nil check
									itemtwo = turtle.getItemDetail()
									if itemtwo ~= nil then
										if itemtwo.name == "ChickenChunks:chickenChunkLoader" then
											print("Chunk loader found!")
											notFoundTwo = false
											print("Placing and recyling old chunk loader...")
											turtle.place()
											turtle.up()
											turtle.dig()
											turtle.turnRight()
											turtle.turnRight()
											print("Done recyling chunk loader!")
											positiontwo = 16
										end
									end
								end
								positiontwo = positiontwo+1
							end
							if notFoundTwo then
								print("Could not find chunk loader. Going to wait 10 seconds and then search again.")
								os.sleep(10)
							end
						end
						print("Done recyling chunk loader!")
						position = 16
					end
				end
			end
			position = position+1
		end
		if notFound then
			print("Could not find chunk loader. Going to wait 10 seconds and then search again.")
			os.sleep(10)
		end
	end
	
	print("Done juggling chunk loaders!")
end

function setup()
	
	--Self explanitory
	
	print("Setting up...")
	
	notFound = true
	while notFound do
		position = 1
		print("Looking for tesseract...")
		while position < 17 do
			turtle.select(position)
			if turtle.getItemCount(position) > 0 then
				--Nil check
				item = turtle.getItemDetail()
				if item ~= nil then
					if item.name == "ThermalExpansion:Tesseract" then
						turtle.place()
						position = 16
						print("Tesseract found!")
						notFound = false
					end
				end
			end
			position = position+1
		end
		if notFound then
			print("Could not find tesseract. Going to wait 10 seconds and then search again.")
			os.sleep(10)
		end
	end
	
	turtle.down()
	
	notFound = true
	while notFound do
		position = 1	
		print("Looking for ender chest...")
		while position < 17 do
			turtle.select(position)
			if turtle.getItemCount(position) > 0 then
				--Nil check
				item = turtle.getItemDetail()
				if item ~= nil then
					if item.name == "EnderStorage:enderChest" then
						turtle.placeUp()
						position = 16
						print("Ender chest found!")
						notFound = false
					end
				end
			end
			position = position+1
		end
		if notFound then
			print("Could not find ender chest. Going to wait 10 seconds and then search again.")
			os.sleep(10)
		end
	end
	
	notFound = true
	while notFound do
		position = 1
		print("Looking for mining well...")
		while position < 17 do
			turtle.select(position)
			if turtle.getItemCount(position) > 0 then
				--Nil check
				item = turtle.getItemDetail()
				if item ~= nil then
					if item.name == "BuildCraft|Factory:miningWellBlock" then
						turtle.place()
						position = 16
						print("Mining well found!")
						notFound = false
					end
				end
			end
			position = position+1
		end
		if notFound then
			print("Could not find mining well. Going to wait 10 seconds and then search again.")
			os.sleep(10)
		end
	end
	
	print("Done setting up!")
end

function clearItems()
	position = 1
	
	--Clears all items except for the chunk loader
	
	print("Clearing items...")
	while position < 17 do
		turtle.select(position)
		if turtle.getItemCount(position) > 0 then
			--Nil check
			item = turtle.getItemDetail()
			if item ~= nil then
				if item.name ~= "ChickenChunks:chickenChunkLoader" then
					turtle.dropUp()
				end
			end
		end
		position = position+1
	end
	
	print("Done clearing items!")
end

function main()
	refuel()
	clearItems()
	clean()
	setup()
	--Feel free to change this time for different heights
	--When provided full power the mining well could dig roughly 10-12 blocks per second
	--On the safe side do height/10 or if you want to cut it close and possibly clean up before the mining well is done then do height/12
	--Tested at a height just below the clouds and a sleep time of 12 seems to work fine
	print("Waiting for mining well to finish...")
	os.sleep(12)
	print("Done waiting!")
end

while true do
	main()
end

--Changes in revision 1.3
--Added an additional nil check due to nil values somehow getting past the first nil check
--In game the turtle might find a few items that cause a nil index error thus the addition of the extra nil check
--Now if the turtle can't find an item it will continue to search for it and will not do anything until the item is provided
--Now if there is not enough fuel to operate the turtle will wait until enough fuel is provided
--End changes in revision 1.3

--Changes in revision 1.2
--Fixed typo in program causing the turtle not to turn
--The turtle will now work in a line and will not move outside of the line and will not place blocks outside this line
--End changes in revision 1.2

--Changes in revision 1.1
--Fixed memory issue caused by infinite recursion
--The chunk loader chould now be placed behind turtle rather than to the right
--End changes in revision 1.1

--Program created by TechOFreak
--Current program revision is 1.1
--Feedback is welcomed
--Visit my youtube channel at https://www.youtube.com/c/techofreak128