--FONTE: https://forum.minetest.net/viewtopic.php?pid=48124

--[[ 
minetest.register_privilege("checkchest",  {
	description=modMinerTrade.translate("Permission to open locked chests of other players"), 
	give_to_singleplayer=false,
})
--]]

modMinerTrade.debug = function(text, playername)
	if text ~= nil
		and type(text) == "string"
		and text ~= ""
	then
		if minetest.settings:get_bool("minertrade.debug") then
			if playername ~= nil
				and type(playername) == "string"
				and playername ~= ""
			then
				local player = minetest.get_player_by_name(playername)
				if player ~=nil and player:is_player() then
					minetest.chat_send_player(
						playername, text
					)
					minetest.log('action',"["..modMinerTrade.modName:upper()..":DEBUG:"..playername.."] "..text)
				else
					minetest.log('error',
						"["..modMinerTrade.modName:upper()..":DEBUG] "
						..modSoundChat.translate(
							"Unable to address debug for player '%s'."
						):format(dump(playername))
					)
					minetest.log('action',"["..modMinerTrade.modName:upper()..":DEBUG] "..text)
				end
			else
				minetest.chat_send_all(text)
				minetest.log('action',"["..modMinerTrade.modName:upper()..":DEBUG] "..text)
			end
		end
	end
end

modMinerTrade.getNodesInRange = function(pos, search_distance, node_name)
	if pos==nil then return 0 end
	if pos.x==nil or type(pos.x)~="number" then return 0 end
	if pos.y==nil or type(pos.y)~="number" then return 0 end
	if pos.z==nil or type(pos.z)~="number" then return 0 end
	if search_distance==nil or type(search_distance)~="number" and search_distance<=0 then return 0 end
	if node_name==nil or type(node_name)~="string" and node_name=="" then return 0 end

	local minp = {x=pos.x-search_distance,y=pos.y-search_distance, z=pos.z-search_distance}
	local maxp = {x=pos.x+search_distance,y=pos.y+search_distance, z=pos.z+search_distance}
	local nodes = minetest.env:find_nodes_in_area(minp, maxp, node_name)
	return #nodes
end



modMinerTrade.doSoundPlayer = function(playername, sfxFile, intDistace)
	if intDistace == nil or (type(intDistace) == "number" and intDistace>= 0) then
		if type(playername) == "string" and type(sfxFile) == "string" and playername ~= "" and sfxFile ~= "" then
			local player = minetest.get_player_by_name(playername)
			if player ~=nil and player:is_player() then
				return minetest.sound_play(sfxFile, {
					object = player, --Se retirar esta linha tocará para todos. (Provavelmente ¬¬)
					gain = 1.0, -- 1.0 = Volume total
					max_hear_distance = intDistace,
					loop = false,
				})
			end
		end
	end
end

--[[ 
modMinerTrade.setSafeInventory = function(playername, tblListInventory)
	--local newInv = minetest.create_detached_inventory_raw("safe_"..playername)
	local newInv = core.create_detached_inventory_raw("safe_"..playername, playername)
	newInv:set_list("safe", tblListInventory)
	local tamanho = newInv:get_size("safe")
	modMinerTrade.bank[playername] = { }
	for i=1,tamanho do
		modMinerTrade.bank[playername][i] = newInv:get_stack("safe", i):to_table()
	end
end


modMinerTrade.getSafeInventory = function(playername)
	--local newInv = minetest.create_detached_inventory_raw("safe_"..playername)
   local newInv = core.create_detached_inventory_raw("safe_"..playername, playername)
	newInv:set_size("safe", modMinerTrade.size.width*modMinerTrade.size.height)	
	--local listInventory = { }
	for i=1,(modMinerTrade.size.width*modMinerTrade.size.height) do
		if modMinerTrade.bank and modMinerTrade.bank[playername] and modMinerTrade.bank[playername][i] then
			newInv:set_stack("safe", i, ItemStack(modMinerTrade.bank[playername][i]))
		else
			newInv:set_stack("safe", i, nil)
		end
	end
	return newInv:get_list("safe")	
end


modMinerTrade.getFormspec = function(playername, ownername, title)
	if not title then title = "" end
	local formspec = "size[9.5,10.5]"
		--.."bgcolor[#636D76FF;false]"
		--..default.gui_bg
		--..default.gui_bg_img
		--..default.gui_slots
		
		--.."bgcolor[#636D76FF;false]"
		.."background[-0.25,-0.25;10,11;safe_inside.png]"
		--listcolors[slot_bg_normal;slot_bg_hover;slot_border;tooltip_bgcolor;tooltip_fontcolor]
		.."listcolors[#3a4044CC;#636e7533;#74acd288;#CCCC00;#000000]"

		.."field[0,0;0,0;txtOwnerName;;"..minetest.formspec_escape(ownername).."]"
		--.."hidden[ownername;"..minetest.formspec_escape(ownername)..";string]"
		
		.."label[0,0;"..minetest.formspec_escape(title).."]"
		.."list[detached:safe_"..playername .. ";safe;"
			..((9.5 - modMinerTrade.size.width)/2)..","..(((4.6 - modMinerTrade.size.height)/2)+0.62)..";"
			..modMinerTrade.size.width..","..modMinerTrade.size.height
		..";]" -- <= ATENCAO: Nao pode esquecer o prefixo 'detached:xxxxxxx'
		.."list[current_player;main;0.75,6.25;8,4;]"
		
		.."button[0.75,5.25;4,1;btnLootAll;"..minetest.formspec_escape(modMinerTrade.translate("LOOT ALL")).."]"
		--.."tooltip[btnLootAll;"..minetest.formspec_escape(modMinerTrade.translate("Button under development (still not working)"))..";#CCCC00;#000000]"		
		.."button[4.75,5.25;4,1;btnDepositAll;"..minetest.formspec_escape(modMinerTrade.translate("DEPOSIT ALL")).."]"
		--.."tooltip[btnDepositAll;"..minetest.formspec_escape(modMinerTrade.translate("Button under development (still not working)"))..";#CCCC00;#000000]"		

		.."listring[detached:safe_"..playername .. ";safe]"
		.."listring[current_player;main]"
	return formspec
end
--]]

modMinerTrade.canInteract = function(meta, player)
	if player:get_player_name() == meta:get_string("owner") 
		or minetest.get_player_privs(player:get_player_name()).server
		or minetest.get_player_privs(player:get_player_name()).checkchest
		or (minetest.get_modpath("tradelands") and modTradeLands.canInteract(player:getpos(), player:get_player_name()))
	then
		return true
	end
	return false
end

--[[
modMinerTrade.getDetachedInventory = function(playername)
	-- playername = player:get_player_name()
	local newInv = minetest.create_detached_inventory("safe_"..playername, { --trunk

		-- Called when a player wants to move items inside the inventory
		allow_move = function(inv, from_list, from_index, to_list, to_index, count, player) 
			return count
		end,

		-- Called when a player wants to put items into the inventory
		allow_put = function(inv, listname, index, stack, player) 
			return stack:get_count()
		end,

		-- Called when a player wants to take items out of the inventory
		allow_take = function(inv, listname, index, stack, player) 
			return stack:get_count()
		end,

		-- on_* - no return value
		-- Called after the actual action has happened, according to what was allowed.
		on_move = function(inv, from_list, from_index, to_list, to_index, count, player) 
			modMinerTrade.setSafeInventory(playername, inv:get_list("safe"))
			--minetest.log('action',playername.." colocou "..stack:get_count().." '"..stack:get_name().."' em seu cofre!")
		end,
		on_put = function(inv, listname, index, stack, player) 
			modMinerTrade.setSafeInventory(playername, inv:get_list("safe"))
			minetest.log('action',modMinerTrade.translate("Player '%s' has placed %02d '%s' in his safe!"):format(playername, stack:get_count(), stack:get_name()))
		end,
		on_take = function(inv, listname, index, stack, player) 
			modMinerTrade.setSafeInventory(playername, inv:get_list("safe"))
			minetest.log('action',modMinerTrade.translate("Player '%s' has removed %02d '%s' in his safe!"):format(playername, stack:get_count(), stack:get_name()))
		end,
		
	})
	local invList = modMinerTrade.getSafeInventory(playername)
	if invList~=nil and #invList>=1 then
		newInv:set_list("safe", invList)
	else
		newInv:set_size("safe", modMinerTrade.size.width*modMinerTrade.size.height)
	end
	
	return newInv
end

modMinerTrade.showInventory = function(player, ownername, title)
	local playername = player:get_player_name()
   local inv = modMinerTrade.getDetachedInventory(ownername)
    minetest.sound_play("sfx_alert", {object=player, max_hear_distance=5.0,})
	minetest.show_formspec(
		playername,
		"safe_"..ownername,
		modMinerTrade.getFormspec(ownername, ownername, title)
	)
end

modMinerTrade.delSafeInventory = function(ownername)
   --core.detached_inventories["safe_"..ownername] = nil	
   return core.remove_detached_inventory_raw("safe_"..ownername)
   --return minetest.remove_detached_inventory_raw("safe_"..ownername)
end

modMinerTrade.doRemoveAll = function(player, ownername)
	if player and player:is_player() then
		local playername = player:get_player_name()
		local invPlayer = player:get_inventory()
		minetest.log('action',"[STRONGBOX] "..modMinerTrade.translate("The player '%s' pressed the button'%s'!"):format(playername, modMinerTrade.translate("DEPOSIT ALL")))
		if ownername and ownername:trim()~="" then
			ownername = ownername:trim()
			local invOwner = modMinerTrade.getDetachedInventory(ownername)
			if not invOwner:is_empty("safe") then
				local safe = invOwner:get_list("safe")
				for i, item in pairs(safe) do
					if invPlayer:room_for_item("main",item) then
						invOwner:remove_item("safe",item)
						invPlayer:add_item("main",item)
						if invOwner:is_empty("safe") then
							minetest.chat_send_player(playername,
								core.colorize("#00ff00", "["..modMinerTrade.translate("STRONGBOX").."]: ")
								..modMinerTrade.translate("Loot completed!")
							)
							minetest.sound_play("sfx_alert", {object=player, max_hear_distance=5.0,})
							break
						end
					else
						minetest.chat_send_player(
							playername, 
							core.colorize("#FF0000", "["..modMinerTrade.translate("STRONGBOX").."]: ")
							..modMinerTrade.translate("The Inventory of '%s' is full!"):format(playername)
						)
						minetest.sound_play("sfx_failure", {object=player, max_hear_distance=5.0,})
						break
					end
				end --for i, item in pairs(safe) do
				modMinerTrade.setSafeInventory(ownername, invOwner:get_list("safe"))
			else
				minetest.chat_send_player(
					playername, 
					core.colorize("#FF0000", "["..modMinerTrade.translate("STRONGBOX").."]: ")
					..modMinerTrade.translate("Everything has been withdrawn!")
				)
				minetest.sound_play("sfx_failure", {object=player, max_hear_distance=5.0,})
			end
		else
			minetest.log(
				"error",("[modMinerTrade.doRemoveAll(player='%s', ownername='%s')] "):format(dump(player), dump(ownername))
				..modMinerTrade.translate("The '%s' parameter must be of the non-empty string type!"):format("ownername")
			)
		end
	else
		minetest.log(
			"error",("[modMinerTrade.doRemoveAll(player='%s', ownername='%s')] "):format(dump(player), dump(ownername))
			..modMinerTrade.translate("The '%s' parameter must be of the player object type!"):format("player")
		)
	end
end

modMinerTrade.doDepositAll = function(player, ownername)
	if player and player:is_player() then
		local playername = player:get_player_name()
		local invPlayer = player:get_inventory()
		--minetest.chat_send_player(playername, ">>>"..dump(ownername))
		minetest.log('action',"[STRONGBOX] "..modMinerTrade.translate("The player '%s' pressed the button'%s'!"):format(playername, modMinerTrade.translate("REMOVE ALL")))
		if ownername and ownername:trim()~="" then
			ownername = ownername:trim()
			local invOwner = modMinerTrade.getDetachedInventory(ownername)
			if not invPlayer:is_empty("main") then
				local main = invPlayer:get_list("main")
				for i, item in pairs(main) do
					if invOwner:room_for_item("safe",item) then
						invPlayer:remove_item("main",item)
						invOwner:add_item("safe",item)
						if invPlayer:is_empty("main") then
							minetest.chat_send_player(playername,
								core.colorize("#00ff00", "["..modMinerTrade.translate("STRONGBOX").."]: ")
								..modMinerTrade.translate("Deposit completed!")
							)
							minetest.sound_play("sfx_alert", {object=player, max_hear_distance=5.0,})
							break
						end
					else
						minetest.chat_send_player(
							playername, 
							core.colorize("#FF0000", "["..modMinerTrade.translate("STRONGBOX").."]: ")
							..modMinerTrade.translate("The Safe of '%s' is full!"):format(playername)
						)
						minetest.sound_play("sfx_failure", {object=player, max_hear_distance=5.0,})
						break
					end
				end --for i, item in pairs(safe) do
				modMinerTrade.setSafeInventory(ownername, invOwner:get_list("safe"))
			else
				minetest.chat_send_player(
					playername, 
					core.colorize("#FF0000", "["..modMinerTrade.translate("STRONGBOX").."]: ")
					..modMinerTrade.translate("The inventory of '%s' is empty!"):format(playername)
				)
				minetest.sound_play("sfx_failure", {object=player, max_hear_distance=5.0,})
			end
		else
			minetest.log(
				"error",("[modMinerTrade.doDepositAll(player='%s', ownername='%s')] "):format(dump(player), dump(ownername))
				..modMinerTrade.translate("The '%s' parameter must be of the non-empty string type!"):format("ownername")
			)
		end
	else
		minetest.log(
			"error",("[modMinerTrade.doDepositAll(player='%s', ownername='%s')] "):format(dump(player), dump(ownername))
			..modMinerTrade.translate("The '%s' parameter must be of the player object type!"):format("player")
		)
	end
end

modMinerTrade.onReceiveFields = function(sender, formname, fields)
	local sendername = sender:get_player_name()
	--minetest.chat_send_player(sendername, "formname="..formname.." fields="..dump(fields))
	if formname == "safe_"..sendername then -- This is your form name
		if fields.txtOwnerName and fields.txtOwnerName:trim()~="" and fields.btnLootAll then
			modMinerTrade.doRemoveAll(sender, fields.txtOwnerName:trim())
		elseif fields.btnDepositAll then
			modMinerTrade.doDepositAll(sender, fields.txtOwnerName:trim())
		elseif fields.quit then
			modMinerTrade.doSave()
			modMinerTrade.delSafeInventory(sendername)
			minetest.log('action',"[STRONGBOX] "..modMinerTrade.translate("Saving strongbox from all players in the file '%s'!"):format(modMinerTrade.urlTabela))
		end
	end
end
--]]



modMinerTrade.floor_pos = function(pos)
	return {
		x=math.floor(pos.x),
		y=math.floor(pos.y),
		z=math.floor(pos.z)
	}
end

modMinerTrade.getPosMachineName = function(posMachine)
	if type(posMachine)=="table" and type(posMachine.x)=="number" and type(posMachine.y)=="number" and type(posMachine.z)=="number" then
		return minetest.pos_to_string(modMinerTrade.floor_pos(posMachine))
	else
		minetest.log(
			"error",("[modMinerTrade.getPosMachineName(posMachine='%s')] "):format(dump(posMachine))
			..modMinerTrade.translate("The '%s' parameter must be of the position type (x,y,z)!"):format("posMachine")
		)
	end
end

modMinerTrade.setMachineFlagsAlert = function (posMachine, value)
	if type(posMachine)=="table" and type(posMachine.x)=="number" and type(posMachine.y)=="number" and type(posMachine.z)=="number" then
		local posMachineName = modMinerTrade.getPosMachineName(posMachine)
		
		if type(modMinerTrade.machine_flags)~="table" then modMinerTrade.machine_flags={}	end
		if type(modMinerTrade.machine_flags[posMachineName])~="table" then modMinerTrade.machine_flags[posMachineName]={}	end
		if type(value)=="number" and value>=0  then
			modMinerTrade.machine_flags[posMachineName].lastalert = value
		else
			minetest.log(
				"error",("[modMinerTrade.setMachineFlagsAlert(posMachine='%s', value='%d')] "):format(dump(posMachine), dump(value))
				..modMinerTrade.translate("The '%s' parameter must be of the non-empty string type!"):format("message")
			)
		end
	else
		minetest.log(
			"error",("[modMinerTrade.setMachineFlagsAlert(posMachine='%s', value='%s')] "):format(dump(posMachine), dump(dump))
			..modMinerTrade.translate("The '%s' parameter must be of the position type (x,y,z)!"):format("posMachine")
		)
	end
end

modMinerTrade.getMachineFlagsAlert = function (posMachine)
	if type(posMachine)=="table" and type(posMachine.x)=="number" and type(posMachine.y)=="number" and type(posMachine.z)=="number" then
		local posMachineName = modMinerTrade.getPosMachineName(posMachine)
		if type(modMinerTrade.machine_flags)~="table" then modMinerTrade.machine_flags={}	end
		if type(modMinerTrade.machine_flags[posMachineName])~="table" then modMinerTrade.machine_flags[posMachineName]={}	end
		if type(modMinerTrade.machine_flags[posMachineName].lastalert)~="number" or modMinerTrade.machine_flags[posMachineName].lastalert < 0 then modMinerTrade.machine_flags[posMachineName].lastalert = 0 end
		return modMinerTrade.machine_flags[posMachineName].lastalert
	else
		minetest.log(
			"error",("[modMinerTrade.getMachineFlagsAlert(posMachine='%s', value='%s')] "):format(dump(posMachine), dump(dump))
			..modMinerTrade.translate("The '%s' parameter must be of the position type (x,y,z)!"):format("posMachine")
		)
	end
end

modMinerTrade.sendMailMachine = function(posMachine, ownername, message)
	if minetest.get_modpath("correio") then
		local mailMachineInterval = (60*60)
		if type(posMachine)=="table" and type(posMachine.x)=="number" and type(posMachine.y)=="number" and type(posMachine.z)=="number" then
			if type(ownername)=="string" and ownername:trim()~="" and minetest.player_exists(ownername) then --Checks whether the owner really exists.
				if type(message)=="string" and message:trim()~="" then
					local agora = os.time()
					local macFlag = modMinerTrade.getMachineFlagsAlert(posMachine)
					if macFlag + mailMachineInterval < agora then
						local carta = modCorreio.set_mail(
							modMinerTrade.translate("DISPENSING MACHINE").." "..modMinerTrade.getPosMachineName(posMachine), 
							ownername, 
							message:trim()
						)
						if carta~=nil then
							minetest.log('action',
								modMinerTrade.translate("A letter was sent by the dispensing machine '%s' to '%s' advising about '%s'!"):
								format(modMinerTrade.getPosMachineName(posMachine), ownername , message)
							)
						else
							minetest.log(
								"error",("[modMinerTrade.sendMailMachine(posMachine='%s', ownername='%s', message='%s')] "):format(dump(posMachine), dump(ownername), dump(message))
								..modMinerTrade.translate("Due to an unknown error, it was not possible to send an email through the dispensing machine!")
							)
						end
						modMinerTrade.setMachineFlagsAlert(posMachine, agora)
					end --if macFlag + mailMachineInterval < agora then
				else
					minetest.log(
						"error",("[modMinerTrade.sendMailMachine(posMachine='%s', ownername='%s', message='%s')] "):format(dump(posMachine), dump(ownername), dump(message))
						..modMinerTrade.translate("The '%s' parameter must be of the non-empty string type!"):format("message")
					)
				end
			else
				minetest.log(
					"error",("[modMinerTrade.sendMailMachine(posMachine='%s', ownername='%s', message='%s')] "):format(dump(posMachine), dump(ownername), dump(message))
					..modMinerTrade.translate("The '%s' parameter must be of the non-empty string type!"):format("ownername")
				)
			end
		else
			minetest.log(
				"error",("[modMinerTrade.sendMailMachine(posMachine='%s', ownername='%s', message='%s')] "):format(dump(posMachine), dump(ownername), dump(message))
				..modMinerTrade.translate("The '%s' parameter must be of the position type (x,y,z)!"):format("posMachine")
			)
		end
	end --if minetest.get_modpath("correio") then
end

modMinerTrade.errorDispensing = function(erroMessage, player, pos, ownername)
	if type(erroMessage)=="string" and erroMessage:trim()~="" then
		if player:is_player() then
			local playername = player:get_player_name()
			minetest.chat_send_player(playername, core.colorize("#00ff00", "["..modMinerTrade.translate("DISPENSING MACHINE").."]: ")..erroMessage)
			minetest.sound_play("sfx_failure", {object=player, max_hear_distance=5.0,})
		end
		if type(pos)~="nil" and type(ownername)=="string" and ownername:trim()~="" then
			modMinerTrade.sendMailMachine(pos, ownername, erroMessage)
		end
	else
		minetest.log(
			"error",("[modMinerTrade.errorDispensing(erroMessage='%s', player, pos, ownername)] "):format(dump(erroMessage))
			..modMinerTrade.translate("The '%s' parameter must be of the non-empty string type!"):format("erroMessage")
		)
	end
end