Applied energistics 2 interface export library

local interface = {}

local component = require("component")
--local ser = require("serialization")

if component.isAvailable("me_interface") == false then
  print("No interface attached found")
  os.exit()
end
local meInterface = component.getPrimary('me_interface')

local directionChest = "NONE"               -- Where the chest is connected to the interface
local exportTime = 0.8                  -- time to wait after exporting an item

function interface.setDirection(direction)
  if direction ~= "UP" then
    if direction ~= "SOUTH" then
      if direction ~= "NORTH" then
    if direction ~= "WEST" then
      if direction ~= "EAST" then
        if direction ~= "DOWN" then
          return false, "Direction must be UP, NORTH, SOUTH, WEST, EAST or DOWN"
        end
      end
    end
      end
    end
  end
  directionChest = direction
  if meInterface.canExport(direction) == false then
    return false, "Interface can't export to " .. direction
  end
  return true
end

function interface.setExportTime(time)
  if time < 0 then
    return false, "Export time must be 0 or positive"
  end
  exportTime = time
  return true
end

function getItem(selection)
  local tmpTable = {}
  local x = meInterface.getItemsInNetwork()     -- Get all items in network
  for key, value in pairs(x) do             -- loop over the list
    if key ~= "n" then
      if value.label == selection then          -- label of selected item found
    -- build the fingerprint
    tmpTable["id"] = value.name
    tmpTable["dmg"] = value.damage
    return tmpTable, value.size         -- return amount of items in network and the fingerprint
      end
    end
  end
  return false, "Item not found"            -- return nil if not found
end


function interface.getItemList()
  local returnTable = {}
  local x = meInterface.getItemsInNetwork()     -- Get all items in network
  if x == nil then
    return false, "No items found"
  end
  for key, value in pairs(x) do             -- loop over the list
    if key ~= "n" then
      local tmpTable = {}               -- clear temp table
      tmpTable["size"] = value.size
      tmpTable["label"] = value.label
      table.insert(returnTable, tmpTable)       -- insert item in return table
    end
  end
  return returnTable                    -- return the list
end

function interface.export(itemLabel, amount, dots)
  if directionChest == "NONE" then
    return false, "Direction not set"
  end
  if directionChest ~= "UP" then
    if directionChest ~= "SOUTH" then
      if directionChest ~= "NORTH" then
    if directionChest ~= "WEST" then
      if directionChest ~= "EAST" then
        if directionChest ~= "DOWN" then
          return false, "Direction must be UP, NORTH, SOUTH, WEST, EAST or DOWN"
        end
      end
    end
      end
    end
  end
  if meInterface.canExport(directionChest) == false then
    return false, "Interface can't export to " .. directionChest
  end
  local item, count = getItem(itemLabel)
  if item == false then
    return false, "Item not found"
  end
  if count < amount then
    amount = count
  end
  for x = 1, amount do
    meInterface.exportItem(item, directionChest, 1, 0)  -- Export item
    os.sleep(exportTime)                -- wait for export
    if dots == true then
      io.write(".")
    end
  end
  return true, amount
end

return interface