-- Copyright 2018 Rosy Song <rosysong@rosinson.com>
-- Licensed to the public under the Apache License 2.0.

local uci = require("luci.model.uci").cursor()
local wa = require("luci.tools.webadmin")
local fs = require("nixio.fs")
local ipc = require("luci.ip")

local def_rate_dl = uci:get("nft-qos", "default", "static_rate_dl")
local def_rate_ul = uci:get("nft-qos", "default", "static_rate_ul")
local def_unit_dl = uci:get("nft-qos", "default", "static_unit_dl")
local def_unit_ul = uci:get("nft-qos", "default", "static_unit_ul")

local def_up = uci:get("nft-qos", "default", "dynamic_bw_up")
local def_down = uci:get("nft-qos", "default", "dynamic_bw_down")

local limit_enable = uci:get("nft-qos", "default", "limit_enable")
local limit_type = uci:get("nft-qos", "default", "limit_type")
local enable_priority = uci:get("nft-qos", "default", "priority_enable")

local has_ipv6 = fs.access("/proc/net/ipv6_route")

m = Map("nft-qos", translate("QoS over Nftables"))

--
-- Taboptions
--
s = m:section(TypedSection, "default", translate("NFT-QoS Settings"))
s.addremove = false
s.anonymous = true

s:tab("limit", "Limit Rate")
s:tab("priority", "Traffic Priority")

--
-- Static
--
o = s:taboption("limit", Flag, "limit_enable", translate("Limit Enable"), translate("Enable Limit Rate Feature"))
o.default = limit_enable or o.enabled
o.rmempty = false

o = s:taboption("limit", ListValue, "limit_type", translate("Limit Type"), translate("Type of Limit Rate"))
o.default = limit_static or "static"
o:depends("limit_enable","1")
o:value("static", "Static")
o:value("dynamic", "Dynamic")

o = s:taboption("limit", Value, "static_rate_dl", translate("Default Download Rate"), translate("Default value for download rate"))
o.datatype = "uinteger"
o.default = def_rate_dl or '50'
o:depends("limit_type","static")

o = s:taboption("limit", ListValue, "static_unit_dl", translate("Default Download Unit"), translate("Default unit for download rate"))
o.default = def_unit_dl or "kbytes"
o:depends("limit_type","static")
o:value("bytes", "Bytes/s")
o:value("kbytes", "KBytes/s")
o:value("mbytes", "MBytes/s")

o = s:taboption("limit", Value, "static_rate_ul", translate("Default Upload Rate"), translate("Default value for upload rate"))
o.datatype = "uinteger"
o.default = def_rate_ul or '50'
o:depends("limit_type","static")

o = s:taboption("limit", ListValue, "static_unit_ul", translate("Default Upload Unit"), translate("Default unit for upload rate"))
o.default = def_unit_ul or "kbytes"
o:depends("limit_type","static")
o:value("bytes", "Bytes/s")
o:value("kbytes", "KBytes/s")
o:value("mbytes", "MBytes/s")

--
-- Dynamic
--
o = s:taboption("limit", Value, "dynamic_bw_down", translate("Download Bandwidth (Mbps)"), translate("Default value for download bandwidth"))
o.default = def_up or '100'
o.datatype = "uinteger"
o:depends("limit_type","dynamic")

o = s:taboption("limit", Value, "dynamic_bw_up", translate("Upload Bandwidth (Mbps)"), translate("Default value for upload bandwidth"))
o.default = def_down or '100'
o.datatype = "uinteger"
o:depends("limit_type","dynamic")

o = s:taboption("limit", Value, "dynamic_cidr", translate("Target Network (IPv4/MASK)"), translate("Network to be applied, e.g. 192.168.1.0/24, 10.2.0.0/16, etc."))
o.datatype = "cidr4"
ipc.routes({ family = 4, type = 1 }, function(rt) o.default = rt.dest end)
o:depends("limit_type","dynamic")

if has_ipv6 then
	o = s:taboption("limit", Value, "dynamic_cidr6", translate("Target Network6 (IPv6/MASK)"), translate("Network to be applied, e.g. AAAA::BBBB/64, CCCC::1/128, etc."))
	o.datatype = "cidr6"
	o:depends("limit_type","dynamic")
end

o = s:taboption("limit", DynamicList, "limit_whitelist", translate("White List for Limit Rate"))
o.datatype = "ipaddr"
o:depends("limit_enable","1")

--
-- Priority
--
o = s:taboption("priority", Flag, "priority_enable", translate("Enable Traffic Priority"), translate("Enable this feature"))
o.default = enable_priority or o.enabled
o.rmempty = false

o = s:taboption("priority", ListValue, "priority_netdev", translate("Default Network Interface"), translate("Network Interface for Traffic Shaping, e.g. br-lan, eth0.1, eth0, etc."))
o:depends("priority_enable", "1")
wa.cbi_add_networks(o)

--
-- Static Limit Rate - Download Rate
--
if limit_enable == "1" and limit_type == "static" then

x = m:section(TypedSection, "download", translate("Static QoS-Download Rate"))
x.anonymous = true
x.addremove = true
x.template = "cbi/tblsection"

o = x:option(Value, "hostname", translate("Hostname"))
o.datatype = "hostname"
o.default = 'undefined'

if has_ipv6 then
	o = x:option(Value, "ipaddr", translate("IP Address (v4 / v6)"))
else
	o = x:option(Value, "ipaddr", translate("IP Address (v4 Only)"))
end
o.datatype = "ipaddr"
if nixio.fs.access("/tmp/dhcp.leases") or nixio.fs.access("/var/dhcp6.leases") then
	o.titleref = luci.dispatcher.build_url("admin", "status", "overview")
end

o = x:option(Value, "macaddr", translate("MAC (optional)"))
o.rmempty = true
o.datatype = "macaddr"

o = x:option(Value, "rate", translate("Rate"))
o.default = def_rate_dl or '50'
o.size = 4
o.datatype = "uinteger"

o = x:option(ListValue, "unit", translate("Unit"))
o.default = def_unit_dl or "kbytes"
o:value("bytes", "Bytes/s")
o:value("kbytes", "KBytes/s")
o:value("mbytes", "MBytes/s")

--
-- Static Limit Rate - Upload Rate
--
y = m:section(TypedSection, "upload", translate("Static QoS-Upload Rate"))
y.anonymous = true
y.addremove = true
y.template = "cbi/tblsection"

o = y:option(Value, "hostname", translate("Hostname"))
o.datatype = "hostname"
o.default = 'undefined'

if has_ipv6 then
	o = y:option(Value, "ipaddr", translate("IP Address (v4 / v6)"))
else
	o = y:option(Value, "ipaddr", translate("IP Address (v4 Only)"))
end
o.datatype = "ipaddr"
if nixio.fs.access("/tmp/dhcp.leases") or nixio.fs.access("/var/dhcp6.leases") then
	o.titleref = luci.dispatcher.build_url("admin", "status", "overview")
end

o = y:option(Value, "macaddr", translate("MAC (optional)"))
o.rmempty = true
o.datatype = "macaddr"

o = y:option(Value, "rate", translate("Rate"))
o.default = def_rate_ul or '50'
o.size = 4
o.datatype = "uinteger"

o = y:option(ListValue, "unit", translate("Unit"))
o.default = def_unit_ul or "kbytes"
o:value("bytes", "Bytes/s")
o:value("kbytes", "KBytes/s")
o:value("mbytes", "MBytes/s")

end

--
-- Traffic Priority Settings
--
if enable_priority == "1" then

s = m:section(TypedSection, "priority", translate("Traffic Priority Settings"))
s.anonymous = true
s.addremove = true
s.template = "cbi/tblsection"

o = s:option(ListValue, "protocol", translate("Protocol"))
o.default = "tcp"
o:value("tcp", "TCP")
o:value("udp", "UDP")
o:value("udplite", "UDP-Lite")
o:value("sctp", "SCTP")
o:value("dccp", "DCCP")

o = s:option(ListValue, "priority", translate("Priority"))
o.default = "1"
o:value("-400", "1")
o:value("-300", "2")
o:value("-225", "3")
o:value("-200", "4")
o:value("-150", "5")
o:value("-100", "6")
o:value("0", "7")
o:value("50", "8")
o:value("100", "9")
o:value("225", "10")
o:value("300", "11")

o = s:option(Value, "service", translate("Service"), translate("e.g. https, 23, (separator is comma)"))
o.default = '?'

o = s:option(Value, "comment", translate("Comment"))
o.default = '?'

end

return m
