--
-- Jewels mod
-- By Kaadmy
--

jewels = {}

-- Array of registered jeweled tools

jewels.registered_jewels = {}

-- Formspec

local form_bench = default.ui.get_page("default:2part")

form_bench = form_bench .. "list[current_name;main;2.25,1.75;1,1;]"
form_bench = form_bench .. "listring[current_name;main]"
form_bench = form_bench .. default.ui.get_itemslot_bg(2.25, 1.75, 1, 1)

form_bench = form_bench .. "label[3.25,1.75;1. Place unjeweled tool here]"
form_bench = form_bench .. "label[3.25,2.25;2. Hold a jewel and punch the bench]"

form_bench = form_bench .. "list[current_player;main;0.25,4.75;8,4;]"
form_bench = form_bench .. "listring[current_player;main]"
form_bench = form_bench .. default.ui.get_hotbar_itemslot_bg(0.25, 4.75, 8, 1)
form_bench = form_bench .. default.ui.get_itemslot_bg(0.25, 5.75, 8, 3)

default.ui.register_page("jewels_bench", form_bench)

local function plus_power(i)
   if i >= 0 then
      i = "+" .. i
   end

   return i
end

function jewels.register_jewel(toolname, new_toolname, def)
   -- registers a new tool with different stats

   local data = {
      name = new_toolname, -- the new name of the tool
      overlay = def.overlay or "jewels_jeweled_handle.png", -- overlay image
      description = def.description or nil,
      stats = {
	 digspeed = def.stats.digspeed, -- negative digs faster
	 maxlevel = def.stats.maxlevel, -- positive digs higher levels
	 maxdrop= def.stats.maxdrop, -- positive increases max drop level
	 uses = def.stats.uses, -- positive increases uses
	 fleshy = def.stats.fleshy, -- positive increases fleshy damage
	 range = def.stats.range, -- positive increases reach distance with tool
      }
   }

   if not jewels.registered_jewels[toolname] then
      jewels.registered_jewels[toolname] = {}
   end

   table.insert(jewels.registered_jewels[toolname], data)

   local tooldef = minetest.deserialize(
      minetest.serialize(minetest.registered_tools[toolname]))

   if not tooldef then
      minetest.log("warning",
                   "Trying to register jewel " .. new_toolname
                      .. " that has an unknown output item " .. toolname)

      return
   end

   local new_tool_invimage = ""
   if tooldef.inventory_image then
      new_tool_invimage = tooldef.inventory_image .. "^" .. data.overlay
   end

   local new_tool_wieldimage = ""
   if tooldef.wield_image then
      new_tool_wieldimage = tooldef.wield_image .. "^" .. data.overlay
   end

   local new_tooldef = tooldef
   local desc = new_tooldef.description or ""

   desc = "Jeweled " .. desc

   if data.description ~= nil then
      desc = data.description
   end

   new_tooldef.inventory_image = new_tool_invimage
   new_tooldef.wield_image = new_tool_wieldimage

   if data.stats.range and new_tooldef.range then
      new_tooldef.range = new_tooldef.range + data.stats.range
      desc = desc .. "\nRange: " .. plus_power(data.stats.range)
   end

   if new_tooldef.tool_capabilities then
      if data.stats.maxdrop and new_tooldef.tool_capabilities.max_drop_level then
	 new_tooldef.tool_capabilities.max_drop_level =
            new_tooldef.tool_capabilities.max_drop_level + data.stats.maxdrop
	 desc = desc .. "\nDrop level: " .. plus_power(data.stats.maxdrop)
      end

      if data.stats.digspeed then
	 for group, cap in pairs(new_tooldef.tool_capabilities.groupcaps) do
	    for i, _ in ipairs(cap.times) do
	       cap.times[i] = cap.times[i] + data.stats.digspeed
	    end

	    if data.stats.maxlevel and cap.maxlevel then
	       cap.maxlevel = cap.maxlevel + data.stats.maxlevel
	    end

	    if data.stats.uses and cap.uses then
	       cap.uses = cap.uses + data.stats.uses
	    end
	 end

	 desc = desc .. "\nDig time: " .. plus_power(data.stats.digspeed) .. " seconds"
      end

      if data.stats.uses then
	 desc = desc .. "\nUses: " .. plus_power(data.stats.uses)
      end
      if data.stats.maxlevel then
	 desc = desc .. "\nDig level: " .. plus_power(data.stats.maxlevel)
      end

      if data.stats.fleshy and new_tooldef.tool_capabilities.damage_groups
      and new_tooldef.tool_capabilities.damage_groups.fleshy then
	 new_tooldef.tool_capabilities.damage_groups.fleshy =
            new_tooldef.tool_capabilities.damage_groups.fleshy + data.stats.fleshy
	 desc = desc .. "\nDamage: " .. plus_power(data.stats.fleshy)
      end
   end

   new_tooldef.description = desc

   minetest.register_tool(new_toolname, new_tooldef)
end

function jewels.get_jeweled(toolname)
   for name, jables in pairs(jewels.registered_jewels) do
      if name == toolname then
	 return util.choice_element(jables)
      end
   end
end

-- Items

minetest.register_craftitem(
   "jewels:jewel",
   {
      description = "Jewel",
      inventory_image = "jewels_jewel.png",
      stack_max = 10
})

-- Nodes

minetest.register_node(
   "jewels:bench",
   {
      description = "Jewelers Workbench",
      tiles ={"jewels_bench_top.png", "jewels_bench_bottom.png", "jewels_bench_sides.png"},
      paramtype2 = "facedir",
      groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
      legacy_facedir_simple = true,
      is_ground_content = false,
      sounds = default.node_sound_wood_defaults(),
      on_construct = function(pos)
         local meta = minetest.get_meta(pos)
         meta:set_string("formspec", default.ui.get_page("jewels_bench"))
         meta:set_string("infotext", "Jewelers Workbench")

         local inv = meta:get_inventory()
         inv:set_size("main", 1)
      end,
      can_dig = function(pos, player)
         local meta = minetest.get_meta(pos)
         local inv = meta:get_inventory()

         return inv:is_empty("main")
      end,
      on_punch = function(pos, node, player, pointed_thing)
         local itemstack = player:get_wielded_item()

         if itemstack:get_name() == "jewels:jewel" then
            local meta = minetest.get_meta(pos)
            local inv = meta:get_inventory()

            local itemname = inv:get_stack("main", 1):get_name()

            if jewels.can_jewel(itemname) then
               inv:set_stack("main", 1, ItemStack(jewels.get_jeweled(itemname)))

               itemstack:take_item()

               achievements.trigger_achievement(player, "jeweler")
               achievements.trigger_achievement(player, "master_jeweler")
            end
         end

         player:set_wielded_item(itemstack)
      end,
})

minetest.register_node(
   "jewels:jewel_ore",
   {
      description = "Jewel Ore",
      tiles = {
         "default_tree_birch_top.png",
         "default_tree_birch_top.png",
         "default_tree_birch.png^jewels_ore.png"
      },
      drop = "jewels:jewel",
      groups = {snappy=1, choppy=1, tree=1},
      sounds = default.node_sound_wood_defaults(),
})

-- Ore

minetest.register_ore(
   {
      ore_type       = "scatter",
      ore            = "jewels:jewel_ore",
      wherein        = "default:tree_birch",
      clust_scarcity = 11*11*11,
      clust_num_ores = 3,
      clust_size     = 6,
      y_min     = 0,
      y_max     = 31000,
})

crafting.register_craft(
   {
      output = "jewels:bench",
      items = {
         "group:planks 5",
         "default:ingot_carbon_steel 2",
         "jewels:jewel",
      }
})

-- Achievements

achievements.register_achievement(
   "jeweler",
   {
      title = "Jeweler",
      description = "Jewel a tool",
      times = 1,
})

achievements.register_achievement(
   "master_jeweler",
   {
      title = "Master Jeweler",
      description = "Jewel 10 tools",
      times = 10,
})

-- The tool jewel definitions

dofile(minetest.get_modpath("jewels").."/jewels.lua")

default.log("mod:jewels", "loaded")