-- microexpansion/api.lua
local BASENAME = "microexpansion"

-- [function] Register Recipe
function microexpansion.register_recipe(output, recipe)
  local function isint(n)
    return n==math.floor(n)
  end

  local function get_amount(_)
    if isint(recipe[_][1]) then
      return recipe[_][1]
    else return 1 end
  end

  local function get_type(_)
    if type(recipe[_][2]) == "string" then
      return recipe[_][2]
    end
  end

  local function register(_)
    local def = {
      type   = get_type(_),
      output = output.." "..tostring(get_amount(_)),
      recipe = recipe[_][3] or recipe[_][2]
    }

    microexpansion.log("Recipe: "..dump(def))
    minetest.register_craft(def)
  end

  for _, i in ipairs(recipe) do
    register(_)
  end
end

-- [local function] Choose description colour
local function desc_colour(status, desc)
  if status == "unstable" then
    return minetest.colorize("orange", desc)
  elseif status == "no" then
    return minetest.colorize("red", desc)
  else
    return minetest.colorize("white", desc)
  end
end

-- [function] Register Item
function microexpansion.register_item(itemstring, def)
  -- Set usedfor
  if def.usedfor then
    def.description = def.description .. "\n"..minetest.colorize("grey", def.usedfor)
  end
  -- Update inventory image
  if def.inventory_image then
    def.inventory_image = BASENAME.."_"..def.inventory_image..".png"
  else
    def.inventory_image = BASENAME.."_"..itemstring..".png"
  end
  -- Colour description
  def.description = desc_colour(def.status, def.description)

  -- Register craftitem
  minetest.register_craftitem(BASENAME..":"..itemstring, def)

  -- if recipe, Register recipe
  if def.recipe then
    microexpansion.register_recipe(BASENAME..":"..itemstring, def.recipe)
  end
end

-- [function] Register Node
function microexpansion.register_node(itemstring, def)
  -- Set usedfor
  if def.usedfor then
    def.description = def.description .. "\n"..minetest.colorize("grey", def.usedfor)
  end
  -- Update texture
  if auto_complete ~= false then
    for _,i in ipairs(def.tiles) do
      def.tiles[_] = BASENAME.."_"..i..".png"
    end
  end
  -- Colour description
  def.description = desc_colour(def.status, def.description)

  -- register craftitem
  minetest.register_node(BASENAME..":"..itemstring, def)

  -- if recipe, register recipe
  if def.recipe then
    microexpansion.register_recipe(BASENAME..":"..itemstring, def.recipe)
  end
end