--
-- Locks mod
--

local S = minetest.get_translator("rp_locks")
local NS = function(s) return s end

local INFOTEXT_PUBLIC = NS("Locked Chest")
local INFOTEXT_OWNED = NS("Locked Chest (Owned by @1)")
local INFOTEXT_CRACKED_PUBLIC = NS("Locked Chest (cracked open)")
local INFOTEXT_CRACKED_OWNED = NS("Locked Chest (cracked open) (Owned by @1)")
local INFOTEXT_NAMED_OWNED = NS("@1 (Owned by @2)")

local GRAVITY = minetest.settings:get("movement_gravity") or 9.81

locks = {}

-- Settings

local picked_time = tonumber(minetest.settings:get("locks_picked_time")) or 15 -- unlocked for 15 seconds
local all_unlocked = minetest.settings:get_bool("locks_all_unlocked")

-- API functions

function locks.is_owner(meta, player)
   local name = player:get_player_name()
   local owner = meta:get_string("lock_owner")

   return name == owner
end

function locks.has_owner(meta)
   return meta:get_string("lock_owner") ~= ""
end

function locks.is_locked(meta, player)
   if all_unlocked then
      return false
   end

   if locks.is_owner(meta, player) then
      return false
   end

   local t = minetest.get_gametime()

   local cracked = meta:get_int("lock_cracked")

   if cracked == 1 then
      return false
   end

   return true
end

-- Items and nodes

minetest.register_tool(
   "rp_locks:pick",
   {
      description = S("Lock Pick"),
      _tt_help = S("Cracks locked chests"),

      groups = { tool = 1 },

      inventory_image = "locks_pick.png",
      wield_image = "locks_pick.png",

      sound = { breaks = "default_tool_breaks" },
      stack_max = 1,

      on_use = function(itemstack, player, pointed_thing)
         if pointed_thing.type ~= "node" then
             return itemstack
         end
         local pos = pointed_thing.under
         if minetest.is_protected(pos, player:get_player_name()) and
                 not minetest.check_player_privs(player, "protection_bypass") then
             minetest.record_protection_violation(pos, player:get_player_name())
             return itemstack
         end

         local node = minetest.get_node(pos)
         if minetest.get_item_group(node.name, "locked") == 0 then
            return itemstack
         end
         local meta = minetest.get_meta(pos)
         local cracked = meta:get_int("lock_cracked") == 1
         if cracked then
            -- Is already open
            return itemstack
         end
         -- Attempt to pick lock
         if math.random(1, 5) <= 1 then
            -- Success!
            meta:set_int("lock_cracked", 1)
            local timer = minetest.get_node_timer(pos)
            -- Unlock node for a limited time
            timer:start(picked_time)

            local owner = meta:get_string("lock_owner")
            if owner == "" then
               meta:set_string("infotext", S(INFOTEXT_CRACKED_PUBLIC))
            else
               meta:set_string("infotext", S(INFOTEXT_CRACKED_OWNED, owner))
            end

            -- TODO: Add graphical effect to show success

            local burglar = player:get_player_name()
            if owner ~= nil and owner ~= "" then
               if owner ~= burglar then
                   minetest.chat_send_player(
                      owner,
                      minetest.colorize("#f00",
                          S("@1 has broken into your locked chest!", burglar)))
                   minetest.chat_send_player(
                       burglar,
                       minetest.colorize("#0f0", S("You have broken the lock!")))
               else
                   minetest.chat_send_player(
                      burglar,
                      minetest.colorize("#0f0", S("You have broken into your own locked chest!")))
               end
	       minetest.log("action", "[rp_locks] " .. burglar .. " cracked open a locked chest of " .. owner .. " at " .. minetest.pos_to_string(pos, 0))
            else
               minetest.chat_send_player(
                   burglar,
                   minetest.colorize("#0f0", S("You have broken the lock!")))
	       minetest.log("action", "[rp_locks] " .. burglar .. " cracked open a locked chest at " .. minetest.pos_to_string(pos, 0))
            end
            achievements.trigger_achievement(player, "burglar")
            minetest.sound_play({name="locks_unlock",gain=0.8},{pos=pos, max_hear_distance=16}, true)

            -- Spawn particles at lock to indicate lock break
            local dir = minetest.fourdir_to_dir(node.param2)
            local w = 1/16
            local k = 11/16
            local l = 7/16
            local vup, vdn, vs, v0 = 0.1, -0.2, 0.5, 0
            local minoff, maxoff, minvel, maxvel
            if dir.x > 0 then
               minoff = vector.new(-k, -w, -w)
               maxoff = vector.new(-l, w, w)
               minvel = vector.new(-vs, vdn, -vs)
               maxvel = vector.new(v0, vup, vs)
            elseif dir.x < 0 then
               minoff = vector.new(l, -w, -w)
               maxoff = vector.new(k, w, w)
               minvel = vector.new(v0, vdn, -vs)
               maxvel = vector.new(vs, vup, vs)
            elseif dir.z > 0 then
               minoff = vector.new(-w, -w, -k)
               maxoff = vector.new(w, w, -l)
               minvel = vector.new(-vs, vdn, v0)
               maxvel = vector.new(vs, vup, vs)
            elseif dir.z < 0 then
               minoff = vector.new(-w, -w, l)
               maxoff = vector.new(w, w, k)
               minvel = vector.new(-vs, vdn, -vs)
               maxvel = vector.new(vs, vup, v0)
            end
            if minoff then
               minetest.add_particlespawner({
                  amount = 12,
                  time = 0.001,
                  pos = { min = vector.add(pos, minoff), max = vector.add(pos, maxoff) },
                  vel = { min = minvel, max = maxvel },
                  acc = { min = vector.new(0, 0, 0), max = vector.new(0, -GRAVITY, 0) },
                  size = 1.2,
                  exptime = { min = 0.60, max = 0.65 },
                  texture = "rp_locks_particle_lock.png",
               })
            end
         else
            -- Failure!
            minetest.sound_play({name="locks_pick",gain=0.5},{pos=pos, max_hear_distance=16}, true)
         end

         if not minetest.is_creative_enabled(player:get_player_name()) then
             itemstack:add_wear_by_uses(8)
         end
         return itemstack
      end,
})

-- Use lock on chest to lock it
local put_lock = function(itemstack, putter, pointed_thing)
    if pointed_thing.type ~= "node" then
       return itemstack
    end

    local pos = pointed_thing.under
    local node = minetest.get_node(pos)
    if node.name == "rp_default:chest" then
        local name
        if putter and putter:is_player() then
           name = putter:get_player_name()
        end
        if minetest.is_protected(pos, name) and
                not minetest.check_player_privs(putter, "protection_bypass") then
            minetest.record_protection_violation(pos, name)
            return itemstack
        end
        node.name = "rp_locks:chest"
        minetest.swap_node(pos, node)
        minetest.sound_play({name="locks_lock",gain=0.5},{pos=pos, max_hear_distance=16}, true)
        local meta = minetest.get_meta(pos)
        if name ~= "" then
           meta:set_string("infotext", S(INFOTEXT_OWNED, name))
           meta:set_string("lock_owner", name)
	   minetest.log("action", "[rp_locks] " .. name .. " puts a lock on a chest at " .. minetest.pos_to_string(pos, 0))
        else
           meta:set_string("infotext", S(INFOTEXT_PUBLIC))
	   minetest.log("action", "[rp_locks] A lock was put on a chest at " .. minetest.pos_to_string(pos, 0))
        end
	local creative_name
	if not name or name == "" then
           creative_name = ""
        else
           creative_name = name
	end

        if not minetest.is_creative_enabled(creative_name) then
           itemstack:take_item()
        end
    end
    return itemstack
end

local put_lock_place = function(itemstack, putter, pointed_thing)
    -- Handle pointed node handlers and protection
    local handled, handled_itemstack = util.on_place_pointed_node_handler(itemstack, putter, pointed_thing)
    if handled then
       return handled_itemstack
    end
    put_lock(itemstack, putter, pointed_thing)
end

minetest.register_craftitem(
   "rp_locks:lock",
   {
      description = S("Lock"),
      _tt_help = S("Used to craft locked chests"),
      groups = { tool = 1 },

      inventory_image = "locks_lock.png",
      wield_image = "locks_lock.png",

      -- Place or punch lock on chest to lock the chest
      on_use = put_lock,
      on_place = put_lock_place,
})

local chest_def = {
      description = S("Locked Chest"),
      _tt_help = S("Provides 32 inventory slots") .. "\n" .. S("Can only be opened by its owner and those who have a lockpick"),
      tiles ={
         "default_chest_top.png",
         "default_chest_top.png",
         "default_chest_sides.png",
         "default_chest_sides.png",
         "default_chest_sides.png",
         "locks_chest_front.png"
      },
      use_texture_alpha = "blend",
      paramtype2 = "4dir",
      groups = {choppy = 2, oddly_breakable_by_hand = 2, level = -1, locked = 1, chest = 2, container = 1, paintable = 2},
      is_ground_content = false,
      sounds = rp_sounds.node_sound_planks_defaults(),
      on_construct = function(pos)
         local meta = minetest.get_meta(pos)
         meta:set_int("lock_cracked", 0)
         meta:set_string("infotext", S(INFOTEXT_PUBLIC))

         local inv = meta:get_inventory()
         inv:set_size("main", 8 * 4)
      end,
      after_place_node = function(pos, player)
         local name = player:get_player_name()

         local meta = minetest.get_meta(pos)
         meta:set_string("infotext", S(INFOTEXT_OWNED, name))
         meta:set_string("lock_owner", name)
      end,
      on_rightclick = function(pos, node, player)
         local meta = minetest.get_meta(pos)

         if not locks.is_locked(meta, player) then
            local np = pos.x .. "," .. pos.y .. "," .. pos.z
            local form = rp_formspec.get_page("rp_formspec:2part")

            local xstart = rp_formspec.default.start_point.x
            local ystart = rp_formspec.default.start_point.y
            local form = rp_formspec.get_page("rp_formspec:2part")
            form = form .. rp_formspec.get_itemslot_bg(xstart, ystart, 8, 4)
            form = form .. "list[nodemeta:".. np ..";main;"..xstart..","..ystart..";8,4;]"

            form = form .. rp_formspec.default.player_inventory

            form = form .. "listring[nodemeta:" .. np .. ";main]"
            form = form .. "listring[current_name;main]"

            minetest.show_formspec(
               player:get_player_name(),
               "default_chest",
               form
            )
         end
      end,
      on_timer = function(pos, elapsed)
         local meta = minetest.get_meta(pos)
         meta:set_int("lock_cracked", 0)
         local owner = meta:get_string("lock_owner")
         if owner == "" then
            meta:set_string("infotext", S(INFOTEXT_PUBLIC))
         else
            meta:set_string("infotext", S(INFOTEXT_OWNED, owner))
         end
      end,
      allow_metadata_inventory_move = function(pos, from_l, from_i, to_l, to_i, cnt, player)
         if minetest.is_protected(pos, player:get_player_name()) and
                 not minetest.check_player_privs(player, "protection_bypass") then
             minetest.record_protection_violation(pos, player:get_player_name())
             return 0
         end
         local meta = minetest.get_meta(pos)
         if locks.is_locked(meta, player) then
            return 0
         end
         return cnt
      end,
      allow_metadata_inventory_put = function(pos, listname, index, itemstack, player)
         if minetest.is_protected(pos, player:get_player_name()) and
                 not minetest.check_player_privs(player, "protection_bypass") then
             minetest.record_protection_violation(pos, player:get_player_name())
             return 0
         end
         local meta = minetest.get_meta(pos)
         if locks.is_locked(meta, player) then
            return 0
         end
         return itemstack:get_count()
      end,
      allow_metadata_inventory_take = function(pos, listname, index, itemstack, player)
         if minetest.is_protected(pos, player:get_player_name()) and
                 not minetest.check_player_privs(player, "protection_bypass") then
             minetest.record_protection_violation(pos, player:get_player_name())
             return 0
         end
         local meta = minetest.get_meta(pos)
         if locks.is_locked(meta, player) then
            return 0
         end
         return itemstack:get_count()
      end,
      can_dig = function(pos, player)
         local meta = minetest.get_meta(pos)
         local inv = meta:get_inventory()
         return inv:is_empty("main") and (locks.is_owner(meta, player) or (not locks.has_owner(meta)))
      end,
      write_name = function(pos, text)
--[[ TODO: Bring back locked chest naming
         local meta = minetest.get_meta(pos)

         if text == "" then
            meta:set_string("infotext", S(INFOTEXT_OWNED,
                               meta:get_string("lock_owner")))
         else
            meta:set_string("infotext", S(INFOTEXT_NAMED_OWNED,
                               text, meta:get_string("lock_owner")))
         end
]]
      end,
      on_blast = function() end,
}

minetest.register_node("rp_locks:chest", chest_def)

local chest_defp = table.copy(chest_def)
chest_defp.description = S("Painted Locked Chest")
chest_defp.tiles ={
	"default_chest_top_painted.png",
	"default_chest_top_painted.png",
	"default_chest_sides_painted.png",
	"default_chest_sides_painted.png",
	"default_chest_sides_painted.png",
	"locks_chest_front_painted.png"
}
chest_defp.overlay_tiles ={
	-- HACK: This is a workaround to fix the coloring of the crack overlay
	{name="rp_textures_blank_paintable_overlay.png",color="white"},
	{name="rp_textures_blank_paintable_overlay.png",color="white"},
	{name="rp_textures_blank_paintable_overlay.png",color="white"},
	{name="rp_textures_blank_paintable_overlay.png",color="white"},
	{name="rp_textures_blank_paintable_overlay.png",color="white"},
	-- This tile is part of the legit overlay
	{name="locks_chest_front_painted_overlay.png",color="white"},
}
chest_defp.paramtype2 = "color4dir"
chest_defp.palette = "rp_paint_palette_64d.png"
chest_defp.drop = "rp_locks:chest"
chest_defp.groups.paintable = 1
chest_defp.groups.not_in_creative_inventory = 1

minetest.register_node("rp_locks:chest_painted", chest_defp)

-- Crafting

crafting.register_craft(
   {
      output = "rp_locks:pick",
      items = {
         "rp_default:ingot_steel 2",
         "rp_default:stick 3",
      },
})

crafting.register_craft(
   {
      output = "rp_locks:lock",
      items = {
         "rp_default:ingot_steel 3",
         "group:planks 2",
      },
})

crafting.register_craft(
   {
      output = "rp_locks:chest",
      items = {
         "rp_default:chest",
         "rp_locks:lock",
      },
})

minetest.register_craft({
    type = "fuel",
    recipe = "rp_locks:chest",
    burntime = 25
})

-- Achievements

achievements.register_achievement(
   "locksmith",
   {
      title = S("Locksmith"),
      description = S("Craft a lock."),
      times = 1,
      craftitem = "rp_locks:lock",
      difficulty = 5.7,
})

achievements.register_achievement(
   "burglar",
   {
      title = S("Burglar"),
      description = S("Break into a locked chest."),
      times = 1,
      item_icon = "rp_locks:pick",
      difficulty = 5.8,
})

-- Update node after the rename orgy after 1.5.3
minetest.register_lbm(
   {
      label = "Update locked chests",
      name = "rp_locks:update_locked_chests",
      nodenames = {"rp_locks:chest"},
      action = function(pos, node)
         local meta = minetest.get_meta(pos)
         local owner = meta:get_string("lock_owner")
         local cracked = meta:get_int("lock_cracked") == 1
         if cracked then
           if owner ~= "" then
              meta:set_string("infotext", S(INFOTEXT_CRACKED_OWNED, owner))
           else
              meta:set_string("infotext", S(INFOTEXT_CRACKED_PUBLIC))
           end
         else
           if owner ~= "" then
              meta:set_string("infotext", S(INFOTEXT_OWNED, owner))
           else
              meta:set_string("infotext", S(INFOTEXT_PUBLIC))
           end
         end
      end,
   }
)

minetest.register_alias("locks:chest", "rp_locks:chest")
minetest.register_alias("locks:lock", "rp_locks:lock")
minetest.register_alias("locks:pick", "rp_locks:pick")