Farmer

local width  = 9
local depth  = 20
local chest_type = "ironchest:crystal_chest"
local chest_size = 108
local storage_slot_start = 4
local planting = {
                    {
                    name = "minecraft:wheat_seeds",
                    crop = "minecraft:wheat",
                    slot = 2
                    },
                    {
                    name = "minecraft:carrot",
                    crop = "minecraft:carrots",
                    slot = 3
                    }
                 }
local planting_size = table.getn(planting)

local plants = {
                    {
                        name = "minecraft:potatoes",
                        seed = "minecraft:potato",
                        age  = 7
                    },
                    {
                        name = "minecraft:wheat",
                        seed = "minecraft:wheat_seeds",
                        age  = 7
                    },
                    {
                        name = "minecraft:carrots",
                        seed = "minecraft:carrot",
                        age  = 7
                    },
                    {
                        name = "minecraft:beetroots",
                        seed = "minecraft:beetroot_seeds",
                        age  = 3
                    },
                    {
                        name = "thermal:bell_pepper",
                        seed = "thermal:bell_pepper_seeds",
                        age  = 10
                    },
                    {
                        name = "thermal:radish",
                        seed = "thermal:radish_seeds",
                        age  = 10
                    },
                    {
                        name = "thermal:rice",
                        seed = "thermal:rice_seeds",
                        age  = 7
                    },
                    {
                        name = "thermal:spinach",
                        seed = "thermal:spinach_seeds",
                        age  = 7
                    },
                    {
                        name = "thermal:eggplant",
                        seed = "thermal:eggplant_seeds",
                        age  = 7
                    }


               }
local plants_size = table.getn(plants)


function fuel_check()
    local fuelLevel = turtle.getFuelLevel()
    if turtle.getItemCount(1) < 1 then
        print("We are currently waiting to be refueled!")
        local waiting = true
        while waiting do
            if turtle.getItemCount(1) > 0 then
                print("Thank you!")
                waiting = false
                sleep(1)
            end
        end
    end
    if fuelLevel < 100 then
        turtle.select(1)
        turtle.refuel(2)
        print("Refueled.")
    end
end

function check_age()
    local _, data = turtle.inspectDown()
    for i = 1, plants_size do
        local plant = plants[i]
        if data.name == plant.name then
            if plant.age == data.state.age then
                print("fully grown")
                return true
            end
        end
    end
    return false
end

function get_plant()
local _, data = turtle.inspectDown()
    for i = 1, plants_size do
        local plant = plants[i]
        if data.name == plant.name then
            return plant
        end
    end
    return nil
end

function select_seed(plant)
    for i = 1, planting_size do
        if planting[i].crop == plant.name then
            turtle.select(planting[i].slot)
        end
    end
end

function check_seeds()
    for i = 1, planting_size do
        local plant = planting[i]
        local item = turtle.getItemDetail(plant.slot)
        if item == nil then
            print("You need to put atleast 1 " .. plant.name .. " in slot " .. plant.slot .. ".")
            return false
        end
        if item.name ~= plant.name then
            print("You need to put atleast 1 " .. plant.name .. " in slot " .. plant.slot .. ".")
            return false
        end
    end
    return true
end

function empty_slots()
    for i = storage_slot_start, 16 do
        if turtle.getItemCount(i) > 0 then
            turtle.select(i)
            turtle.drop()
        end
    end
end

function harvest_crop()
    if check_age() then
        local plant = get_plant()
        select_seed(plant)
        turtle.digDown()
        turtle.placeDown()
    end
end

while true do
    fuel_check()
    if not check_seeds() then
        return
    end

    for w = 1, width do
        if w ~= 1 then
            fuel_check()
            for d = 1, depth do
                turtle.back()
            end
            turtle.turnRight()
            turtle.forward()
            turtle.turnLeft()
        end
        for d = 1, depth do
            harvest_crop()
            fuel_check()
            turtle.forward()
        end
        harvest_crop()
    end
    fuel_check()
    for d = 1, depth do
        turtle.back()
    end
    turtle.turnLeft()
    fuel_check()
    for w = 1, width-1 do
        turtle.forward()
    end
    turtle.turnLeft()
    empty_slots()
    turtle.turnRight()
    turtle.turnRight()
    os.sleep(30)
end