-- This is a ComputerCraft script to easily run turtle API commands from the turtle's command line.

local tArgs = {...}
if #tArgs < 1 then
  print('Usage: do <cmd> [<repeat>] [more]')
  print('  Commands are:')
  print('    f, b - forward, back')
  print('    l, r - left, right')
  print('    d, du, dd - dig (up, down)')
  print('    i, iu, id - inspect (up, down)')
  print('    sel <num> - select inv num')
  print('    s, su, sd - suck items (up, down)')
  print('Example: do f 2 r f 2')
  print('(Moves forward twice, turns right,')
  print('moves forward twice again.)')
end


local function outOfFuel()
  if turtle.getFuelLevel() == 'unlimited' or turtle.getFuelLevel() == 0 then
    print('Out of fuel!')
    return true
  else
    return false
  end
end

for i = 1,#tArgs do
  cmd = tArgs[i] -- get the command
  if #tArgs < i + 1 then
    reps = 1 -- end of cmdline args, so set this to 1
  else
    if type(tArgs[i+1]) == 'number' then
      reps = tonumber(tArgs[i+1]) -- set
    else
      -- "reps" is actually the next command, so set it to 1
      reps = 1
    end
  end
  if tArgs[i] == 'f' then
    for j = 1,reps do
        print('f ' .. tostring(turtle.forward()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'b' then
    for j = 1,reps do
        print('b ' .. tostring(turtle.back()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'l' then
    for j = 1,reps do
        print('l ' .. tostring(turtle.turnLeft()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'r' then
    for j = 1,reps do
        print('r ' .. tostring(turtle.turnRight()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'd' then
    for j = 1,reps do
        print('d ' .. tostring(turtle.dig()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'du' then
    for j = 1,reps do
        print('du ' .. tostring(turtle.digUp()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'dd' then
    for j = 1,reps do
        print('dd ' .. tostring(turtle.digDown()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'i' then
    for j = 1,reps do
        print('i ' .. tostring(turtle.inspect()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'iu' then
    for j = 1,reps do
        print('iu ' .. tostring(turtle.inspectUp()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'id' then
    for j = 1,reps do
        print('id ' .. tostring(turtle.inspectDown()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'sel' then
    -- in this case, reps is the inventory number
    print('sel ' .. reps .. ' ' .. tostring(turtle.sel(reps)))
    if outOfFuel() then return end
  end
  if tArgs[i] == 's' then
    for j = 1,reps do
        print('s ' .. tostring(turtle.suck()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'su' then
    for j = 1,reps do
        print('su ' .. tostring(turtle.suckUp()))
        if outOfFuel() then return end
    end
  end
  if tArgs[i] == 'sd' then
    for j = 1,reps do
        print('sd ' .. tostring(turtle.suckDown()))
        if outOfFuel() then return end
    end
  end
end