local Commands = require("modules.exp_legacy.expcore.commands")

local function Modules(moduleInventory) -- returns the multiplier of the modules
      local effect1 = moduleInventory.get_item_count("productivity-module") -- type 1
      local effect2 = moduleInventory.get_item_count("productivity-module-2") -- type 2
      local effect3 = moduleInventory.get_item_count("productivity-module-3") -- type 3

      local multi = effect1 * 4 + effect2 * 6 + effect3 * 10
      return multi / 100 + 1
end

local function AmountOfMachines(itemsPerSecond, output)
      if (itemsPerSecond) then
            return itemsPerSecond / output
      end
end

Commands.new_command("ratio", { "expcom-ratio.description" },
      "This command will give the input and output ratios of the selected machine. Use the parameter for calculating the machines needed for that amount of items per second.")
      :add_param("itemsPerSecond", true, "number")
      :register(function(player, itemsPerSecond)
            local machine = player.selected -- selected machine

            if not machine then -- nil check
                  return Commands.error{ "expcom-ratio.notSelecting" }
            end

            if machine.type ~= "assembling-machine" and machine.type ~= "furnace" then
                  return Commands.error{ "expcom-ratio.notSelecting" }
            end

            local recipe = machine.get_recipe() -- recipe

            if not recipe then -- nil check
                  return Commands.error{ "expcom-ratio.notSelecting" }
            end

            local items = recipe.ingredients -- items in that recipe
            local products = recipe.products -- output items
            local amountOfMachines
            local moduleInventory = machine.get_module_inventory() -- the module Inventory of the machine
            local multi = Modules(moduleInventory) -- function for the productively modals

            if itemsPerSecond then
                  amountOfMachines = math.ceil(AmountOfMachines(itemsPerSecond, 1 / recipe.energy * machine.crafting_speed * products[1].amount * multi)) -- amount of machines
            end

            if not amountOfMachines then
                  amountOfMachines = 1 -- set to 1 to make it not nil
            end

            ----------------------------items----------------------------
            for i, item in ipairs(items) do
                  local sprite -- string to make the icon work either fluid ore item

                  if item.type == "item" then
                        sprite = "expcom-ratio.item-in"
                  else
                        sprite = "expcom-ratio.fluid-in"
                  end

                  local ips = item.amount / recipe.energy * machine.crafting_speed * amountOfMachines -- math on the items/fluids per second
                  Commands.print{ sprite, math.round(ips, 3), item.name } -- full string
            end

            ----------------------------products----------------------------
            for i, product in ipairs(products) do
                  local sprite -- string to make the icon work either fluid ore item

                  if product.type == "item" then
                        sprite = "expcom-ratio.item-out"
                  else
                        sprite = "expcom-ratio.fluid-out"
                  end

                  local output = 1 / recipe.energy * machine.crafting_speed * product.amount * multi -- math on the outputs per second
                  Commands.print{ sprite, math.round(output * amountOfMachines, 3), product.name } -- full string
            end

            if amountOfMachines ~= 1 then
                  Commands.print{ "expcom-ratio.machines", amountOfMachines }
            end
      end)