--Local
local distance = 0 -- How Far Did User Pick
local onlight = 0 -- When to Place Torch
local torch = turtle.getItemCount(1) -- How many items are in slot 1 (torch)
local chest = turtle.getItemCount(2) -- How many items are in slot 2 (chest)
local ItemFuel = turtle.getItemCount(3) -- How many items are in slot 3 (Fuel)
local MD = 3 -- How Many Blocks Apart From Each Mine
local MineTimes = 0 -- If Multi Mines Are ON then This will keep Count
local Fuel = 0 -- if 2 then it is unlimited no fuel needed
local NeedFuel = 0 -- If Fuel Need Then 1 if not Then 0
local Error = 0 -- 0 = No Error and 1 = Error
local Way = 0 -- 0 = Left and 1 = Right

--Checking
local function Check()
  if torch == 0 then
    print("Please place torches in slot 1")
    Error = 1
  end

  if chest == 0 then
    print("Please place chests in slot 2")
    Error = 1
  end

    if ItemFuel == 0 then
    print("Please place fuel in slot 3")
        Error = 1
    end

  repeat
    if turtle.getFuelLevel() < 100 then
      turtle.select(3)
      turtle.refuel(1)
      NeedFuel = 1
      ItemFuel -= 1
    end
  until NeedFuel == 0
end

-- Recheck if user forget something turtle will check after 15 sec
local function Recheck()
    torch = turtle.getItemCount(1)
    chest = turtle.getItemCount(2)
    ItemFuel = turtle.getItemCount(3)
    Error = 0
end

--Mining
local function ForwardM()
    repeat
        if turtle.detect() then
            turtle.dig()
        end

        if turtle.forward() then -- sometimes sand and gravel and block and mix-up distance
            TF -= 1
      onlight += 1
        end

    if turtle.detectUp() then
            turtle.digUp()
        end

    if turtle.detectDown() then
      turtle.digDown()
    end

        if onlight == 8 then -- Every 10 Block turtle place torch
            if torch > 0 then
        turtle.turnRight()
        turtle.dig()
        turtle.select(1)
        turtle.place()
        turtle.turnLeft()

        torch -= 1
        onlight -= 8
            else
        print("Please add more torches to the turtle...")
                os.shutdown()
            end
        end

        if turtle.getItemCount(16) > 0 then -- If slot 16 in turtle has item slot 5 to 16 will go to chest
            if chest > 0 then
        turtle.turnRight()
        turtle.dig()
        turtle.up()
        turtle.dig()
        turtle.down()
        turtle.select(2)
        turtle.place()

        chest -= 1

        for slot = 5, 16 do
          turtle.select(slot)
          turtle.drop()
          sleep(1.5)
        end

                turtle.select(5)
            else
        print("Please place more chests in the turtle...")
                os.shutdown()
            end
        end

        repeat
      if turtle.getFuelLevel() < 100 then
        turtle.select(3)
        turtle.refuel(1)
        NeedFuel = 1
        ItemFuel -= 1
      elseif ItemFuel == 0 then
        print("Please place fueld in the turtle...")
        os.shutdown()
      elseif NeedFuel == 1 then
        NeedFuel = 0
      end
        until NeedFuel == 0
    until TF == 0
end

--Warm Up For Back Program
local function WarmUpForBackProgram() -- To make turn around so it can go back
    turtle.turnLeft()
    turtle.turnLeft()
    turtle.up()
end

--Back Program
local function Back()
    repeat
        if turtle.forward() then -- sometimes sand and gravel and block and mix-up distance
            TB = TB - 1
        end
        if turtle.detect() then -- Sometimes sand and gravel can happen and this will fix it
            if TB ~= 0 then
                turtle.dig()
            end
        end
    until TB == 0
end

-- Multimines Program
local function MultiMines()
    if Way == 1 then
        turtle.turnLeft()
        turtle.down()
    else
        turtle.turnRight()
        turtle.down()
    end
    repeat
        if turtle.detect() then
            turtle.dig()
        end
        if turtle.forward() then
            MD = MD - 1
        end
        if turtle.detectUp() then
            turtle.digUp()
        end
    until MD == 0
    if Way == 1 then
        turtle.turnLeft()
    else
        turtle.turnRight()
    end
    if MineTimes == 0 then
        print("Turtle is done")
    else
        MineTimes = MineTimes - 1
    end
end

-- Restart
local function Restart()
    TF = distance
    TB = distance
    MD = 3
    onlight = 0
end

-- Starting
function Start()
    repeat
        ForwardM()
        WarmUpForBackProgram()
        Back()
        MultiMines()
        Restart()
    until MineTimes == 0
end

-- Start
print("Hi There Welcome to Mining Turtle Program")
print("How Far Will Turtle Go")
input = io.read()
distance = tonumber(input)
TF = distance
TB = distance
print("Left or Right")
print("0 = Left and 1 = Right")
input2 = io.read()
Way = tonumber(input2)
print("How Many Times")
input3 = io.read()
MineTimes = tonumber(input3)
Check()
if Error == 1 then
    repeat
        sleep(10)
        Recheck()
        Check()
    until Error == 0
end
Start()