-- Copyright (C) 2021, 2022 Ale

-- This file is part of Emeraldbank Minetest Mod.

-- Emeraldbank is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Affero General Public License as
-- published by the Free Software Foundation, either version 3 of the
-- License, or (at your option) any later version.

-- Emeraldbank is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU Affero General Public License for more details.

-- You should have received a copy of the GNU Affero General Public License
-- along with Emeraldbank.  If not, see <https://www.gnu.org/licenses/>.



local S = core.get_translator(core.get_current_modname())

function atm.ensure_init(name)
   -- Ensure the atm account for the placer specified by name exists
   atm.readaccounts()
   if not atm.balance[name] then
      atm.balance[name] = atm.startbalance
   end
end


-- banking accounts storage

function atm.readaccounts ()
   local b = atm.balance
   local file = io.open(atm.pth, "r")
   if file then
      repeat
	 local balance = file:read("*n")
	 if balance == nil then
	    break
	 end
	 local name = file:read("*l")
	 b[name:sub(2)] = balance
      until file:read(0) == nil
      io.close(file)
   end
end

function atm.saveaccounts()
   if not atm.balance then
      return
   end
   local data = {}
   for k, v in pairs(atm.balance) do
      table.insert(data, string.format("%d %s\n", v, k))
   end
   
   local output = io.open(atm.pth, "w")
   output:write(table.concat(data))
   io.close(output)
end

function emeraldbank.update_account()
   atm.readaccounts()
   for _, player in ipairs(core.get_connected_players()) do
      if not player or player.is_fake_player then return end
      local meta = player:get_meta()
      local bankemeralds = meta:get_int("emeraldbank:emerald")
      local name = player:get_player_name()
      if atm.balance[name] then
	 atm.balance[name] = math.floor(atm.balance[name] + bankemeralds)
      else
	 atm.balance[name] = bankemeralds
      end
      meta:set_int("emeraldbank:emerald", 0)
      -- backup
      meta:set_int("emeraldbank:emerald_backup", bankemeralds)
   end
   atm.saveaccounts()
end

function emeraldbank.old_add_emeralds(player, num)
   if not player then return false end
   local meta = player:get_meta()
   local bankemeralds = meta:get_int("emeraldbank:emerald") -- if nil "get_int()" return 0 Magic!
   local name = player:get_player_name()
   if num then
      meta:set_int("emeraldbank:emerald", bankemeralds+num)
      mcl_title.set(player, "actionbar", {text=S("Emeralds in Bank: @1", bankemeralds+num), color="yellow"})
      return true
   end
   return false
end

function emeraldbank.add_emeralds(player, num)
   atm.readaccounts()
   if not player then return false end
   local meta = player:get_meta()
   local name = player:get_player_name()
   if num then
      if atm.balance[name] then
	 atm.balance[name] = math.floor(atm.balance[name] + num)
      else
	 atm.balance[name] = num
      end
      mcl_title.set(player, "actionbar", {text=S("Emeralds in Bank: @1", atm.balance[name]), color="yellow"})
      atm.saveaccounts()
      return true
   end
   return false
end

function emeraldbank.transfer_emeralds(player1, player2, num)
   atm.readaccounts()
   local name = player1:get_player_name()
   local name2 = player2:get_player_name()
   local bankemeralds1 = atm.balance[name]
   if num > 0 then
      if bankemeralds1 and bankemeralds1 >= num then
	 core.chat_send_player(name, S("Pay Successfully! You have transferred @1 Emeralds." , num))
	 core.chat_send_player(name2, S("Pay Successfully! You've gotten @1 Emeralds.", num))
	 if core.get_modpath("irc") then
	    irc.say(name.." has transferred "..num.." emeralds to "..name2)
	 end
	 if core.get_modpath("yl_matterbridge") then
	    yl_matterbridge.send_to_bridge("", name.." has transferred "..num.." emeralds to "..name2)
	 end
	 emeraldbank.add_emeralds(player1, -num)
	 emeraldbank.add_emeralds(player2, num)
	 core.sound_play("cash", {
	    to_player = name2,
	    gain = 1.0,
	    fade = 0.0,
	    pitch = 1.0,
	 })
      else
	 core.chat_send_player(name, S("Not enough Emeralds in your account"))
      end
   else
      core.chat_send_player(name, S("Invalid pay"))
   end
end

function emeraldbank.keep(player, itemstack)
   local itemname = itemstack:get_name()
   local itemcount = itemstack:get_count()
   local name = player:get_player_name()
   if itemname == "mcl_core:emerald" then
      itemstack:take_item(itemcount)
      emeraldbank.add_emeralds(player, itemcount)
      return true
   end
   if itemname == "mcl_core:emeraldblock" then
      itemstack:take_item(itemcount)
      emeraldbank.add_emeralds(player, itemcount*9)
      return true
   end
   mcl_title.set(player, "actionbar", {text=S("You need keep emeralds or emeraldblocks in your hand!"), color="dark_red"})
   return false
end

function emeraldbank.take(player)
   local meta = player:get_meta()
   local bankemeralds = meta:get_int("emeraldbank:emerald")
   local name = player:get_player_name()
   local pos = player:get_pos()
   local num = 1
   if bankemeralds >= 1 then
      if bankemeralds >= 10 then
	 num = 10
      end
      emeraldbank.add_emeralds(player, -num)
      core.add_item(pos, "mcl_core:emerald "..num)
      return true
   end
   mcl_title.set(player, "actionbar", {text=S("Not enough Emeralds in your account"), color="dark_red"})
   return false
end


-- wire transfer data storage

function atm.read_transactions()
   local file = io.open(atm.pth_wt, "r")
   if file then
      local data = file:read("*all")
      atm.completed_transactions = minetest.deserialize(data)
   end
end

function atm.write_transactions()
   if not atm.completed_transactions then
      return
   end
   local file = io.open(atm.pth_wt, "w")
   local data = minetest.serialize(atm.completed_transactions)
   file:write(data)
   io.close(file)
end



minetest.register_on_joinplayer(atm.readaccounts)
minetest.register_on_joinplayer(emeraldbank.update_account)


function emeraldbank.upgrade_shop(pos)
   local oldnode = core.get_node(pos)
   local old_meta = core.get_meta(pos)
   local old_meta_table = core.get_meta(pos):to_table()
   local nodename = core.get_node(pos).name
   -- set the new shop node
   core.swap_node(pos, {name = "fancy_vend:player_vendor"})

   -- setup the new shop node
   -- Set variables for access later (for various checks, etc.)
   local owner = old_meta:get_string("owner") or ""
   pos.y = pos.y + 1
   local above_node = minetest.get_node(pos).name
   
   -- If node above is air or the display node, and it is not protected, attempt to place the vendor. If vendor sucessfully places, place display node above, otherwise alert the user
   if (minetest.registered_nodes[above_node].buildable_to or above_node == "fancy_vend:display_node") and not minetest.is_protected(pos, owner) then
      if above_node ~= "fancy_vend:display_node" then
	 minetest.set_node(pos, minetest.registered_nodes["fancy_vend:display_node"])
      end
      -- Set owner
      local meta = minetest.get_meta(pos)
      meta:set_string("owner", owner or "")
      
      -- Set default meta
      meta:set_string("log", minetest.serialize({"Vendor placed by "..owner,}))
      emeraldbank.reset_vendor_settings(pos)
      emeraldbank.refresh_vendor(pos)
   else
      minetest.chat_send_player(owner, S("Vendors require 2 nodes of space."))
   end
   
   if minetest.get_modpath("pipeworks") then
      pipeworks.after_place(pos)
   end
   
   -- copy old metadata in new node
   core.get_meta(pos):from_table(old_meta_table)
   -- new node
   local node = core.get_node(pos)
   local meta = core.get_meta(pos)
   local count = meta:get_int("count")
   local price = meta:get_int("price")
   local shop_item = meta:get_string("shop_item")
   local minv = meta:get_inventory()
   local settings = emeraldbank.get_vendor_settings(pos)
   settings.input_item = "mcl_core:emerald"
   settings.input_item_qty = price
   settings.output_item = shop_item
   settings.output_item_qty = count
   
   emeraldbank.refresh_vendor(pos)
end