BatteryBox refill dead battery (placement side)

--Variables:

local firstTimeSetup = "yes"
local taskDone = "yes"
local task = "waiting"
local waitTime = 30
local waitTimeMax = 300
local emptyCount


local varStorage = {}

--Functions:

function storeVariables()
    varStorage.task = task
    varStorage.taskDone = taskDone
    --The above stores the variables in the table

    local output = textutils.serialize(varStorage)
    --This converts the table to a string

    local handle = assert(fs.open("vars", "w"), "Couldn't save vars")
    handle.write(output)
    handle.close()
end

function getVariables()
    local handle = assert(fs.open("vars", "r"), "Couldn't load vars")
    local input = handle.readAll()
    handle.close()

    local destination = textutils.unserialize(input)
    task = destination.task
    taskDone = destination.taskDone
end

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

function getBat()
    task = "gettingBattery"
    taskDone = "no"
    storeVariables()
    turtle.select(1)
    turtle.suck()
    emptyCount = turtle.getItemCount(1)
    if emptyCount == 0 then print("No more than 0")
        while emptyCount == 0 do
            turtle.select(1)
            turtle.suck()
            emptyCount = turtle.getItemCount(1)
            sleep(waitTime)
        end
    end
    if emptyCount > 0 then print("Got more than 0")
        if emptyCount == 1 then print("Got 1") elseif emptyCount > 1 then print("More than 1")
            emptyCount = emptyCount - 1
            turtle.drop(emptyCount)
        end
    end
    taskDone = "yes"
end

function putBat()
    task = "puttingBattery"
    taskDone = "no"
    storeVariables()
    turtle.select(1)
    turtle.dropUp()
    taskDone = "yes"
end

function wait()
    task = "waiting"
    taskDone = "no"
    storeVariables()
    sleep(waitTime)
    taskDone = "yes"
end

function waitMax()
    task = "waiting"
    taskDone = "no"
    storeVariables()
    sleep(waitTimeMax)
    taskDone = "yes"
end

function pickUp()
    task = "pickingUp"
    taskDone = "no"
    storeVariables()
    turtle.select(1)
    turtle.digDown()
    taskDone = "yes"
end

function place()
    task = "placing"
    taskDone = "no"
    storeVariables()
    turtle.select(1)
    turtle.placeDown()
    taskDone = "yes"
end

function operation()
    pickUp()
    putBat()
    getBat()
    place()
    wait()
    waitMax()
end

--Main Program:

--First startup run:

if firstTimeSetup == "yes" then
    clear()
    print("Don't forget to change the *firstTimeSetup = 'yes'* variable to 'no'!")
    print("Do this by typing 'edit FileName'")
    print("(FileName = what you named the program)")
    print("into the console after reboot.")
    print()
    textutils.slowPrint("Saving StartUp variables...")
    print()
    print()
    term.write("Press any key to reboot:") io.read()
    storeVariables()
    sleep(1)
    os.reboot()
end

--StartUp:

getVariables()

if task == "pickingUp" then
    if taskDone == "yes" then
        putBat()
        getBat()
        place()
        wait()
        waitMax()
    elseif taskDone == "no" then
        pickUp()
        putBat()
        getBat()
        place()
        wait()
        waitMax()
    end
elseif task == "puttingBattery" then
    if taskDone == "yes" then
        getBat()
        place()
        wait()
        waitMax()
    elseif taskDone == "no" then
        putBat()
        getBat()
        place()
        wait()
        waitMax()
    end
elseif task == "gettingBattery" then
    if taskDone == "yes" then
        place()
        wait()
        waitMax()
    elseif taskDone == "no" then
        getBat()
        place()
        wait()
        waitMax()
    end
elseif task == "placing" then
    if taskDone == "yes" then
        wait()
        waitMax()
    elseif taskDone == "no" then
        place()
        wait()
        waitMax()
    end
elseif task == "waiting" then
    if taskDone == "no" then
        wait()
    end
end
--End of StartUp

while true do
    operation()
end