local mod_storage = minetest.get_mod_storage()

toolranks = {}

toolranks.colors = {
  grey = minetest.get_color_escape_sequence("#9d9d9d"),
  green = minetest.get_color_escape_sequence("#1eff00"),
  gold = minetest.get_color_escape_sequence("#ffdf00"),
  white = minetest.get_color_escape_sequence("#ffffff")
}

function toolranks.get_tool_type(description)
  if not description then
    return "tool"
  elseif string.find(description, "Pickaxe") then
    return "pickaxe"
  elseif string.find(description, "Axe") then
    return "axe"
  elseif string.find(description, "Shovel") then
    return "shovel"
  elseif string.find(description, "Hoe") then
    return "hoe"
  else
    return "tool"
  end
end

function toolranks.create_description(name, uses, level)
  local description = name
  local tooltype    = toolranks.get_tool_type(description)

  local newdesc = toolranks.colors.green .. description .. "\n" ..
                  toolranks.colors.gold .. "Level " .. (level or 1) .. " " .. tooltype .. "\n" ..
                  toolranks.colors.grey .. "Nodes dug: " .. (uses or 0)

  return newdesc
end

function toolranks.get_level(uses)
  if uses <= 250 then
    return 1
  elseif uses < 500 then
    return 2
  elseif uses < 1000 then
    return 3
  elseif uses < 2500 then
    return 4
  elseif uses < 5000 then
    return 5
  elseif uses < 10000 then
	  return 6
  elseif uses < 25000 then
	  return 7
  elseif uses < 50000 then
	  return 8
  elseif uses < 100000 then
	  return 9
  else
	  return 10
  end
end

function toolranks.new_afteruse(itemstack, user, node, digparams)
  local itemmeta  = itemstack:get_meta() -- Metadata
  local itemdef   = itemstack:get_definition() -- Item Definition
  local itemdesc  = itemdef.original_description -- Original Description
  local dugnodes  = tonumber(itemmeta:get_string("dug")) or 0 -- Number of nodes dug
  local lastlevel = tonumber(itemmeta:get_string("lastlevel")) or 1 -- Level the tool had
                                                                    -- on the last dig
  local most_digs = mod_storage:get_int("most_digs") or 0
  local most_digs_user = mod_storage:get_string("most_digs_user") or 0
  
  -- Only count nodes that spend the tool
  if(digparams.wear > 0) then
   dugnodes = dugnodes + 1
   itemmeta:set_string("dug", dugnodes)
  end
  if(dugnodes > most_digs) then
    most_digs = dugnodes
    if(most_digs_user ~= user:get_player_name()) then -- Avoid spam.
      most_digs_user = user:get_player_name()
      minetest.chat_send_all("Most used tool is now a " .. toolranks.colors.green .. itemdesc 
                             .. toolranks.colors.white .. " owned by " .. user:get_player_name()
                             .. " with " .. dugnodes .. " uses.")
    end
    mod_storage:set_int("most_digs", dugnodes)
    mod_storage:set_string("most_digs_user", user:get_player_name())
  end
  if(itemstack:get_wear() > 60135) then
    minetest.chat_send_player(user:get_player_name(), "Your tool is about to break!")
    minetest.sound_play("default_tool_breaks", {
      to_player = user:get_player_name(),
      gain = 2.0,
    })
  end
  local level = toolranks.get_level(dugnodes)

  if lastlevel < level then
    local levelup_text = "Your " .. toolranks.colors.green ..
                         itemdesc .. toolranks.colors.white ..
                         " just leveled up!"
    minetest.sound_play("toolranks_levelup", {
      to_player = user:get_player_name(),
      gain = 2.0,
    })
    minetest.chat_send_player(user:get_player_name(), levelup_text)
    itemmeta:set_string("lastlevel", level)
  end

  local newdesc   = toolranks.create_description(itemdesc, dugnodes, level)

  itemmeta:set_string("description", newdesc)
  local wear = digparams.wear
  if level > 1 then
    wear = digparams.wear / (1 + level / 4)
  end

  --minetest.chat_send_all("wear="..wear.."Original wear: "..digparams.wear.." 1+level/4="..1+level/4)
  -- Uncomment for testing ^

  itemstack:add_wear(wear)

  return itemstack
end

minetest.override_item("default:pick_diamond", {
  original_description = "Diamond Pickaxe",
  description = toolranks.create_description("Diamond Pickaxe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:axe_diamond", {
  original_description = "Diamond Axe",
  description = toolranks.create_description("Diamond Axe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:shovel_diamond", {
  original_description = "Diamond Shovel",
  description = toolranks.create_description("Diamond Shovel", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:pick_wood", {
  original_description = "Wooden Pickaxe",
  description = toolranks.create_description("Wooden Pickaxe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:axe_wood", {
  original_description = "Wooden Axe",
  description = toolranks.create_description("Wooden Axe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:shovel_wood", {
  original_description = "Wooden Shovel",
  description = toolranks.create_description("Wooden Shovel", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:pick_steel", {
  original_description = "Steel Pickaxe",
  description = toolranks.create_description("Steel Pickaxe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:axe_steel", {
  original_description = "Steel Axe",
  description = toolranks.create_description("Steel Axe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:shovel_steel", {
  original_description = "Steel Shovel",
  description = toolranks.create_description("Steel Shovel", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:pick_stone", {
  original_description = "Stone Pickaxe",
  description = toolranks.create_description("Stone Pickaxe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:axe_stone", {
  original_description = "Stone Axe",
  description = toolranks.create_description("Stone Axe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:shovel_stone", {
  original_description = "Stone Shovel",
  description = toolranks.create_description("Stone Shovel", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:pick_bronze", {
  original_description = "Bronze Pickaxe",
  description = toolranks.create_description("Bronze Pickaxe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:axe_bronze", {
  original_description = "Bronze Axe",
  description = toolranks.create_description("Bronze Axe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:shovel_bronze", {
  original_description = "Bronze Shovel",
  description = toolranks.create_description("Bronze Shovel", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:pick_mese", {
  original_description = "Mese Pickaxe",
  description = toolranks.create_description("Mese Pickaxe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:axe_mese", {
  original_description = "Mese Axe",
  description = toolranks.create_description("Mese Axe", 0, 1),
  after_use = toolranks.new_afteruse})

minetest.override_item("default:shovel_mese", {
  original_description = "Mese Shovel",
  description = toolranks.create_description("Mese Shovel", 0, 1),
  after_use = toolranks.new_afteruse})

if minetest.get_modpath("moreores") then

  minetest.override_item("moreores:pick_mithril", {
    original_description = "Mithril Pickaxe",
    description = toolranks.create_description("Mithril Pickaxe", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:axe_mithril", {
    original_description = "Mithril Axe",
    description = toolranks.create_description("Mithril Axe", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:shovel_mithril", {
    original_description = "Mithril Shovel",
    description = toolranks.create_description("Mithril Shovel", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:sword_mithril", {
    original_description = "Mithril Sword",
    description = toolranks.create_description("Mithril Sword", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:pick_silver", {
    original_description = "Silver Pickaxe",
    description = toolranks.create_description("Silver Pickaxe", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:axe_silver", {
    original_description = "Silver Axe",
    description = toolranks.create_description("Silver Axe", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:shovel_silver", {
    original_description = "Silver Shovel",
    description = toolranks.create_description("Silver Shovel", 0, 1),
    after_use = toolranks.new_afteruse})

  minetest.override_item("moreores:sword_silver", {
    original_description = "Silver Sword",
    description = toolranks.create_description("Silver Sword", 0, 1),
    after_use = toolranks.new_afteruse})
end

-- add swords for snappy nodes
minetest.override_item("default:sword_wood", {
	original_description = "Wooden Sword",
	description = toolranks.create_description("Wooden Sword", 0, 1),
	after_use = toolranks.new_afteruse})

minetest.override_item("default:sword_stone", {
	original_description = "Stone Sword",
	description = toolranks.create_description("Stone Sword", 0, 1),
	after_use = toolranks.new_afteruse})

minetest.override_item("default:sword_steel", {
	original_description = "Steel Sword",
	description = toolranks.create_description("Steel Sword", 0, 1),
	after_use = toolranks.new_afteruse})

minetest.override_item("default:sword_bronze", {
	original_description = "Bronze Sword",
	description = toolranks.create_description("Bronze Sword", 0, 1),
	after_use = toolranks.new_afteruse})

minetest.override_item("default:sword_mese", {
	original_description = "Mese Sword",
	description = toolranks.create_description("Mese Sword", 0, 1),
	after_use = toolranks.new_afteruse})

minetest.override_item("default:sword_diamond", {
	original_description = "Diamond Sword",
	description = toolranks.create_description("Diamond Sword", 0, 1),
	after_use = toolranks.new_afteruse})

minetest.log("action", "[toolranks] loaded.")