print("== Tree farming script ===")
print("Author: MichiVIP")
print("Version: 0.0.1")

local rubberwoodstr = "IC2:rubberWood"

local grassstr = "minecraft:grass"
local dirtstr = "minecraft:dirt"

local detectionstr = "eng_toolbox:limestone"

local cheststr = "minecraft:chest"

local waterstr = "minecraft:flowing_water"

write("Enter sleep amount in seconds: ")
local sleepamount = tonumber(io.read())
print("Place saplings in slot 1 and a chest behind the turtle")
io.read()

local function farmtree()
    local success, data = turtle.inspect()
    if not success then
        turtle.select(1)
        turtle.place()
        return
    elseif data.name == rubberwoodstr then
        turtle.dig()
    end
    turtle.forward()
    local counter = 0
    while true do
        local success, data = turtle.inspectUp()
        if success and data.name == rubberwoodstr then
            turtle.digUp()
            turtle.up()
            counter = counter + 1
        else
            break
        end
    end
    for i = 0, counter, 1 do
        turtle.down()
    end
    turtle.back()
    if not turtle.detect() then
        local success, data = turtle.inspect()
        if success and data.name == waterstr then
            return
        end
        turtle.select(1)
        turtle.place()
    end
end

local function backtomain()
    turtle.down()
    while true do
        turtle.back()
        local success, data = turtle.inspectDown()
        if success and data.name == detectionstr then
            turtle.turnRight()
            return
        end
    end
end

local function nexttree()
    if not turtle.forward() then
        return false
    end
    while true do
        local success, data = turtle.inspectDown()
        if success and data.name == detectionstr then
            turtle.turnLeft()
            break
        else
            if not turtle.forward() then
                return false
            end
        end
    end
    while true do
        local success, data = turtle.inspect()
        if success then
            if data.name == dirtstr or data.name == grassstr then
                turtle.up()
                local success, data = turtle.inspect()
                if not success or not data.name == rubberwoodstr then
                    turtle.down()
                    backtomain()
                    return nexttree()
                end
                break
            end
        end
        turtle.forward()
    end
    return true
end

local function returntohome()
    turtle.turnRight()
    turtle.turnRight()
    while true do
        turtle.forward()
        local success, data = turtle.inspect()
        if success and data.name == cheststr then
            for i = 2, 16, 1 do
                turtle.select(i)
                print(turtle.drop())
            end
            turtle.turnRight()
            turtle.turnRight()
            return
        end
    end
end

local counter = 1
while true do
    print("Starting tree farming try no " .. counter)
    while nexttree() do
        farmtree()
        backtomain()
    end
    returntohome()
    counter = counter + 1
    os.sleep(sleepamount)
end