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-- DOCS

-- Returns the ID string and metadata of the block in front of the Turtle
-- result values:
--     boolean success
--     table data / string errorMessage
turtle.inspect()

-- Returns the ID string and metadata of the block above the Turtle
-- result values:
--     boolean success
--     table data / string errorMessage
turtle.inspectUp()

-- Returns the ID string and metadata of the block below the Turtle
-- result values:
--     boolean success
--     table data / string errorMessage
turtle.inspectDown()

-- USAGE EXAMPLE

function block_has_id(id)
    local success, data = turtle.inspect()
    return success and data.name == id
end

-- true when the block in front is starmetal ore
function block_is_starmetal_ore()
    return block_has_id("astralsorcery:starmetal_ore")
end

-- find for a chest around the turtle
function find_chest()
    local success, data
    for i = 1, 4 do
        success, data = turtle.inspect()
        if success and ends_with("chest") then return true end
    end
    error("chest not found")
end

-- check if string ends with ending
function ends_with(str, ending)
   return ending == "" or str:sub(-#ending) == ending
end

-- DOCS

-- Returns the ID string, count and damage values of currently selected slot or, if specified, slotNum slot
-- result values:
--     table data
turtle.getItemDetail([number slotNum])

-- USAGE EXAMPLE

function item_has_id(slot, id)
	local item = turtle.getItemDetail(slot)
	-- item is nil when slot is empty
	return item and item.name == id
end

-- true when an item is found in inventory
function select_slot_with_item(id)
	for slot = 1, 16 do
		if item_has_id(slot, id) then
			turtle.select(slot)
			return true
		end
	end
	return false
end

-- starmetal loop
function starmetal()
	local success, data
	while true do
		success, data = turtle.inspect()
		if success then
			if data.name == "astralsorcery:starmetal_ore" then
				turtle.select(1)
				turtle.dig()
			else
				-- waiting for starmetal
				sleep(1)
			end
		else 
			if select_slot_with_item("minecraft:iron_ore") then
				turtle.place()
			else
				print("no iron ore found in inventory")
				sleep(5)
			end
		end
	end
end

-- DOCS

-- Returns the ID string, count and damage values of currently selected slot or, if specified, slotNum slot
-- result values:
--     string serializedData
textutils.serialize(any data)

-- Returns the data reassembled from string serializedData. Used mainly together with textutils.serialize()
-- result values:
--     any unserializedData
textutils.unserialize(string serializedData)

-- USAGE EXAMPLE

--[[
        -- example
	local v = ...
	v:SendStat({
		name = os.getComputerLabel() or tostring(os.getComputerID()),
		value = "working",
		color = colors.green
	})
]]
function v:SendStat(data)
    data.color = data.color or colors.white
    self.modem.transmit(self.channel, self.channel, textutils.serialize(data))
end



-- server example 
function listen()
	while true do
		local _, _, channel, _, msg, _ = os.pullEvent("modem_message")
		if msg then
			local data = textutils.unserialize(msg)
		
			print(data.name)
			print(data.value)
			print(data.color)
		end
	end
end