local robot = require("robot")
local computer = require("computer")
local shell = require("shell")


function buildLayer()
    place3()
    robot.turnRight()
    robot.forward()
    robot.turnRight()
    robot.back()
    place3()
    robot.turnLeft()
    robot.forward()
    robot.turnLeft()
    robot.back()
    place3()
end

function place3()
    for i = 0, 2, 1 do
        robot.forward()
        robot.placeDown()
    end
end

function buildRedstoneLayer()
    place3()
    robot.turnRight()
    robot.forward()
    robot.turnRight()
    robot.placeDown()
    robot.forward()
    robot.select(2)
    robot.placeDown()
    robot.select(1)
    robot.forward()
    robot.placeDown()
    robot.turnLeft()
    robot.forward()
    robot.turnLeft()
    robot.back()
    place3()
end

function returnToStart()
    for i = 0, 3, 1 do
        robot.back()
    end
    for i = 0, 2, 1 do
        robot.down()
    end
    robot.turnLeft()
    robot.forward()
    robot.forward()
    robot.turnRight()
end

function dropRedstone()
    robot.select(3)
    robot.drop(1)
    robot.select(1)
end

function reload()
    robot.up()
    robot.turnRight()
    robot.forward()
    robot.forward()
    robot.turnRight()
    robot.select(1)
    robot.suck(26)
    robot.turnLeft()
    robot.forward()
    robot.turnRight()
    robot.select(2)
    robot.suck(1)
    robot.turnLeft()
    robot.forward()
    robot.turnRight()
    robot.select(3)
    robot.suck(1)
    robot.turnRight()
    robot.down()
    for i = 0, 3, 1 do
        robot.forward()
    end
    robot.turnRight()
    robot.select(1)
end



function checkPower()
    return computer.energy() / computer.maxEnergy() < 0.3
end

local args, ops = shell.parse(...)

for i = 0, args[1] - 1 , 1 do
    reload()

    robot.forward()

    if checkPower() then
        shell.execute('recharge')
    end

    robot.up()
    buildLayer()
    robot.up()
    robot.turnLeft()
    robot.turnLeft()
    robot.back()
    buildRedstoneLayer()
    robot.up()
    robot.turnLeft()
    robot.turnLeft()
    robot.back()
    buildLayer()
    returnToStart()
    dropRedstone()
    os.sleep(10)
end