-- <Práce s textem> --
	-- Nastavení barvy textu
	local function c(number)
		term.setTextColor(number)
	end

	-- Barvy
	local green = 8192
	local blue = 2048
	local yellow = 16
	local red = 16384
-- </Práce s textem> --


-- Získání parametrů
local params = { ... }
local lenght = params[1]
local weight = params[2]
local torches = params[3]

local function ClearTerminal()
	term.clear()
	term.setCursorPos(1,1)
end

local function WriteWelcomeMessage()
	ClearTerminal()
	
	c(green)
	print("Mine")
	c(blue)
	print("====\n")
	sleep(1)
end

local function WriteParameters()
	-- Vypsání parametrů
	c(yellow)
	print("Vybral jste\n***********")
	print("Delka: ", lenght)
	print("Sirka: ", weight)
	print("Louce: ", torches)
	print("")
end

local function FuelController()
	local fuelLevel = turtle.getFuelLevel()
	local wantLevel = (lenght * weight) + weight + 5 -- Délka * šířka + dodatečný pohyb + rezerva
	
	if(fuelLevel >= wantLevel) then
		c(green)
		print("Zelva ma dost paliva")
		return true
	else
		local missingFuel = wantLevel - fuelLevel
		c(red)
		print("Je treba doplnit ", missingFuel, " paliva!!")
		c(yellow)
		print("Palivo vlozte do posledniho slotu")
		
		turtle.select(16)
		
		while turtle.getFuelLevel() <= wantLevel do
			local add = turtle.refuel(1)
			if(add) then
				c(green)
				print("Palivo vlozeno")
			else
				c(red)
				print("Nedostatek paliva!!")
				print("Vlozte jeste: ", wantLevel - turtle.getFuelLevel())
				sleep(3)
			end
		end
		
		c(green)
		print("Zelva ma dost paliva")
		return true
	end
end

local function TorchController()
	if(torches == "ano") then
		local wantCount = (lenght * weight) / 25 + 5 -- Délka * šířka / průměrný počet loučí + rezerva
		local stackCount = math.ceil(wantCount / 64)
		local torchCount = 0
		
		for i = 1, stackCount do
			turtle.select(i)
			local data = turtle.getItemDetail()
			
			if(data == nil) then
				data = ""
			end
			
			if(data.name == "minecraft:torch") then
				torchCount = torchCount + turtle.getItemCount()
			end
		end
		
		if(torchCount >= wantCount) then
			c(green)
			print("Zelva ma dost louci")
			
			return true
		else
			while torchCount < wantCount do
				c(red)
				print("Nedostatek louci!!")
				print("Vlozte jeste: ", wantCount - torchCount)
				
				for i = 1, stackCount do
					if(i == 1) then
						torchCount = 0
					end
				
					turtle.select(i)
					local data = turtle.getItemDetail()
					
					if(data == nil) then
						data = ""
					end
					
					if(data.name == "minecraft:torch") then
						torchCount = torchCount + turtle.getItemCount()
					end
				end
				
				sleep(3)
			end
			
			if(torchCount >= wantCount) then
				c(green)
				print("Zelva ma dost louci")
				
				return true
			end
		end
	else
		return true
	end
end

local function DropInventory()
	for i = 1, 16 do
		turtle.select(i)
		data = turtle.getItemDetail()
		
		if(data == nil) then
			data = ""
		end
		
		if(data.name ~= "minecraft:torch") then
			turtle.drop()
		end
	end
end

local function Back(i)
	if(i % 2 == 1) then
		turtle.turnLeft()
		
		for a = 1, weight - 1 do
			turtle.forward()
		end
		
		turtle.turnLeft()
		
		for b = 1, lenght - 1 do
			turtle.forward()
		end
		
		turtle.down()
		turtle.forward()
		DropInventory()
		turtle.turnLeft()
		turtle.turnLeft()
	else
		turtle.turnRight()
		
		for a = 1, weight - 1 do
			turtle.forward()
		end
		
		turtle.turnLeft()
		turtle.down()
		turtle.forward()
		DropInventory()
		turtle.turnLeft()
		turtle.turnLeft()
	end
	
	-- Rozloučení
	c(green)
	print("Hotovo!!")
end

local function CheckItemCount(i)
	for j = 1, 16 do
		turtle.select(j)
		data = turtle.getItemDetail()
		
		if(turtle.getItemCount() == 64 and data.name ~= "minecraft:torch") then
			-- Vrátit se na výchozí pozici a vyprádnit inventář
			turtle.turnLeft()
			
			for a = 1, i - 1 do
				turtle.forward()
			end
				
			turtle.turnLeft()
			
			for b = 1, lenght - 1 do
				turtle.forward()
			end
			
			turtle.down()
			turtle.forward()
			
			DropInventory()
			
			turtle.turnRight()
			turtle.turnRight()
			
			-- Vrátit se do pozice, která byla opuštna pro vyprázdnění
			turtle.forward()
			turtle.up()
			
			for c = 1, lenght do
				turtle.forward()
			end
			
			turtle.turnRight()
			
			for d = 1, weight - 1 do
				turtle.forward()
			end
			
			turtle.turnLeft()
		end
	end
end

local function Mine()
	-- Vybrat první políčko
	turtle.select(1)
	
	-- Úvodní text
	ClearTerminal()
	c(yellow)
	print("Tezim...")

	-- Želva se dostane na výchozí pozici
	turtle.dig()
	turtle.forward()
	turtle.digUp()
	turtle.up()
	turtle.digUp()
	
	for i = 1, weight do
		c(yellow)
		print("Rada cislo: ", i)
		
		-- Vytěž jednu řadu
		for j = 1, lenght - 1 do
			turtle.dig()
			turtle.forward()
			turtle.digDown()
			turtle.digUp()
			
			if(j % 4 == 0 and i % 4 == 0 and torches == "ano") then
				wantSlot = 1
				
				for k = 1, wantSlot do
					turtle.select(k)
					data = turtle.getItemDetail()
					
					if(data == nil) then
						data = ""
					end
					
					if(data.name == "minecraft:torch") then
						wantSlot = k - 1
						turtle.placeDown()
					else
						wantSlot = wantSlot + 1
					end
				end
			end
		end
		
		-- Vyprázdnění inventáře želvy
		if(i < tonumber(weight) and i % 2 == 1) then
			CheckItemCount(i)
		end
		
		-- Otočení podle aktuální řady
		if(i < tonumber(weight)) then
			if(i == 1 or i % 2 == 1) then
				turtle.turnRight()
				turtle.dig()
				turtle.forward()
				turtle.turnRight()
				turtle.digUp()
				turtle.digDown()
			elseif(i % 2 == 0) then
				turtle.turnLeft()
				turtle.dig()
				turtle.forward()
				turtle.turnLeft()
				turtle.digUp()
				turtle.digDown()
			end
		else
			Back(i)
		end
	end
end

-- Řídící místo
WriteWelcomeMessage()
WriteParameters()
sleep(2)
if(FuelController() and TorchController()) then
	sleep(3)
	Mine()
end