CC Turtle: Botania Petals

local tool = peripheral.wrap("left")
local Slots = {
    SHEARS = 1,
    BONE_MEAL = 4,
    PETALS= 13,
    FLOWERS = 16
}

-- places petal
local function placePetal()
    turtle.select(Slots.PETALS)
    turtle.place()
end

-- bone meals 1 time
local function boneMeal()
    turtle.select(Slots.BONE_MEAL)
    if tool.lookAtBlock() ~= nil then
        turtle.place()
    end
end

-- shears using automata
local function shearFlower()
    turtle.select(Slots.SHEARS)
    tool.digBlock()
    turtle.suck()
end

-- dumps flowers
local function dumpFlower()
    turtle.select(Slots.FLOWERS)
    turtle.dropUp()
end

-- main function
local function main()
    placePetal()
    boneMeal()
    shearFlower()
    dumpFlower()
end

-- checks turtle supplies, returns false if out of any resource
counter = 0
local function checkSupplies()
    ready = true

    -- clears screen
    term.clear()
    term.setCursorPos(1,1)

    turtle.select(Slots.SHEARS)
    if turtle.getItemCount() == 0 then
        print("Shears Broke! Put new Shears in slot '" .. Slots.SHEARS .. "'")
        ready = false
    end

    turtle.select(Slots.BONE_MEAL)
    if turtle.getItemCount() <= 1 then
        -- request bonemeal
        print("Refill bonemeal in slot '" .. Slots.BONE_MEAL .. "'")
        ready = false
    end

    turtle.select(Slots.PETALS)
    if turtle.getItemCount() <= 0 then
        counter = counter+1
        print("Put petals to harvest in slot '" .. Slots.PETALS .. "'")
        if counter > 10 then
            ready = false
        end
    else
        counter = 0
        item = turtle.getItemDetail()
        for k,v in pairs(item) do
            if string.find(v, "double_flower") then
                turtle.dropUp()
                os.sleep(.2)
            end
        end
    end
    return ready

end

-- while loop
while true do
    if checkSupplies() then
        main()
    else
        print("Waiting...")
        os.sleep(5)
    end
end