modMinerTrade.doBankSave = function()
	local file = io.open(modMinerTrade.urlTabela, "w")
	if file then
		file:write(minetest.serialize(modMinerTrade.bank))
		file:close()
		--minetest.log('action',"[MINERTRADE] Banco de dados salvo !")
	else
		minetest.log('error',"[MINERTRADE:ERRO] "..modMinerTrade.translate("The file '%s' is not in table format!"):format(modMinerTrade.urlTabela))
	end
end

modMinerTrade.doBankLoad = function()
	local file = io.open(modMinerTrade.urlTabela, "r")
	if file then
		modMinerTrade.bank = minetest.deserialize(file:read("*all"))
		file:close()
		if not modMinerTrade.bank or type(modMinerTrade.bank) ~= "table" then
			minetest.log('error',"[MINERTRADE:ERRO] "..modMinerTrade.translate("The file '%s' is not in table format!"):format(modMinerTrade.urlTabela))
			return { }
		else
			minetest.log('action',"[MINERTRADE] "..modMinerTrade.translate("Opening '%s'!"):format(modMinerTrade.urlTabela))
		end
	end
end

modMinerTrade.isExistAcount = function(playername)
	if modMinerTrade.bank.player[playername] ~= nil then
		return true
	else
		return false
	end
end

modMinerTrade.createAcount = function(playername)
	if modMinerTrade.bank.player[playername] == nil then
		modMinerTrade.bank.player[playername] = { 
			acount_created = os.date("%Y/%b/%d %Hh:%Mm:%Ss"),
			balance = 0,
		}
		return true
	else
		return false
	end
	
	return modMinerTrade.bank.player[playername].balance
end

modMinerTrade.getBalance = function(playername)
	if modMinerTrade.isExistAcount(playername) then
		return modMinerTrade.bank.player[playername].balance
	end
end

modMinerTrade.showAtm = {
	frmMain = function(playername) --FORMULÁRIO: PRINCIPAL / RAIZ
		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]"
			.."button[0,0.0;4,0.5;btnBalance;"..minetest.formspec_escape(core.colorize("#FFFFFF", modMinerTrade.translate("BALANCE"))).."]"
			--.."button[0,0.5;4,0.5;btnStatement;"..minetest.formspec_escape(core.colorize("#888888", modMinerTrade.translate("STATEMENT"))).."]"
			--.."button[0,1.0;4,0.5;btnDeposits;"..minetest.formspec_escape(core.colorize("#888888", modMinerTrade.translate("DEPOSITS"))).."]"
			.."button[0,1.5;4,0.5;btnWithdrawals;"..minetest.formspec_escape(core.colorize("#FFFFF", modMinerTrade.translate("WITHDRAWALS [DINHEIRO E CHECK]"))).."]" 
			--.."button[0,2.0;4,0.5;btnTransfers;"..minetest.formspec_escape(core.colorize("#888888", modMinerTrade.translate("TRANSFERS"))).."]"
			--.."button[0,2.0;4,0.5;btnLoans;"..minetest.formspec_escape(core.colorize("#888888", modMinerTrade.translate("LOANS"))).."]" --Emprestimos
			--.."button[0,2.5;4,0.5;btnCreditCard;"..minetest.formspec_escape(core.colorize("#888888", modMinerTrade.translate("CARTÃO DE CRÉDITO [EXPEDIR E MUDAR SENHA]"))).."]"
			--.."button[0,3.0;4,0.5;btnSetings;"..minetest.formspec_escape(core.colorize("#888888", modMinerTrade.translate("SETTINGS"))).."]" --Se quer ou não uma senha, se quer receber uma carta quando houver uma nova movimentacao.
			.."button_exit[0,3.5;4,0.5;;"..minetest.formspec_escape(core.colorize("#FFFFFF", modMinerTrade.translate("EXIT"))).."]"
		
		modMinerTrade.doSoundPlayer(playername, "sfx_atm", 5)
		minetest.show_formspec(playername, "frmAtmMain", formspec)
	end,
	frmBalance = function(playername) --FORMULÁRIO: SALDO
		local msgBalance = ""
		if modMinerTrade.isExistAcount(playername) then
			msgBalance = modMinerTrade.translate("You own %03d minercash"):format(modMinerTrade.getBalance(playername))
		else
			msgBalance = modMinerTrade.translate("Player '%s' is not an account holder of this bank."):format(playername)
		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]"
		.."button[0,0.0;4,0.5;btnAtmMain;"..minetest.formspec_escape(core.colorize("#FFFFFF", modMinerTrade.translate("BACK"))).."]"
		.."button_exit[0,3.0;4,0.5;;"..minetest.formspec_escape(core.colorize("#FFFFFF", modMinerTrade.translate("EXIT"))).."]"
		.."label[5.0,0.0;"..minetest.formspec_escape(core.colorize("#00FFFF", modMinerTrade.translate("BALANCES")..":")).."]"
		.."label[5.0,2.0;"..minetest.formspec_escape(core.colorize("#00FFFF", msgBalance)).."]"
		
		modMinerTrade.doSoundPlayer(playername, "sfx_atm", 5)
		minetest.show_formspec(playername, "frmAtmBalance", formspec)
	end,
	frmWithdrawals = function(playername) --FORMULÁRIO: EXTRATO
		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]"
			.."button[0,0.0;4,0.5;btnAtmMain;"..minetest.formspec_escape(core.colorize("#FFFFFF", modMinerTrade.translate("BACK"))).."]"
			.."button_exit[0,3.0;4,0.5;;"..minetest.formspec_escape(core.colorize("#FFFFFF", modMinerTrade.translate("EXIT"))).."]"
		
		modMinerTrade.doSoundPlayer(playername, "sfx_atm", 5)
		minetest.show_formspec(playername, "frmAtmWithdrawals", formspec)
	end,
	
}

modMinerTrade.onReceiveFields = function(sender, formname, fields)
	local sendername = sender:get_player_name()
	if fields.btnAtmMain ~= nil then
		modMinerTrade.showAtm.frmMain(playername)
	else
		if formname == "frmAtmMain"  then
			if fields.btnSaldo ~= nil then
				modMinerTrade.showAtm.frmBalance(playername)
			elseif fields.btnWithdrawals ~= nil then
				modMinerTrade.showAtm.frmWithdrawals(playername)
			end
		end
	end
end

--###############################################################################################################

minetest.register_on_player_receive_fields(function(sender, formname, fields)
	return modMinerTrade.onReceiveFields(sender, formname, fields)
end)

minetest.register_on_leaveplayer(function(player)
	modMinerTrade.doBankSave()
end)

minetest.register_on_shutdown(function()
	modMinerTrade.doBankSave()
	minetest.log('action',"[STRONGBOX] "..modMinerTrade.translate("Saving bank from all players in the file '%s'!"):format(modMinerTrade.urlTabela))
end)