#!/usr/bin/lua
--[[

	Part of AREDN® -- Used for creating Amateur Radio Emergency Data Networks
	Copyright (C) 2016 Darryl Quinn
	See Contributors file for additional contributors

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation version 3 of the License.

	This program 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 General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.	If not, see <http://www.gnu.org/licenses/>.

	Additional Terms:

	Additional use restrictions exist on the AREDN® trademark and logo.
		See AREDNLicense.txt for more info.

	Attributions to the AREDN® Project must be retained in the source code.
	If importing this code into a new or existing project attribution
	to the AREDN® project must be added to the source code.

	You must not misrepresent the origin of the material contained within.

	Modified versions must be modified to attribute to the original source
	and be marked in reasonable ways as differentiate it from the original
	version

--]]

require("uci")
require("aredn.utils")
require("aredn.info")
require("aredn.olsr")
require("aredn.hardware")
require("aredn.http")
require("nixio")
local ipc = require("luci.ip")
local json = require ("luci.jsonc")

-- Function extensions
os.capture = capture

-- ==== MAIN =====
ctx = uci.cursor()
if not ctx then
		error("Failed to get uci cursor")
end

info={}

-- API version
info['api_version']="1.13"


-- NODE name
info['node']=aredn.info.getNodeName()

info['node_details']={}
-- MODEL
info['node_details']['model']=aredn.info.getModel()

-- DESCRIPTION
info['node_details']['description']=aredn.info.getNodeDescription()

-- BOARD ID
info['node_details']['board_id']=hardware_boardid()

-- Firmware Manufacturer
local fw_mfg="AREDN"
if not file_exists("/www/AREDN.png") then
	fw_mfg = "Other"
end
info['node_details']['firmware_mfg']=fw_mfg

-- Firmware version
info['node_details']['firmware_version']=aredn.info.getFirmwareVersion()

-- Mesh Gatway
info['node_details']['mesh_gateway']=aredn.info.getMeshGatewaySetting()

-- Supernode
if ctx:get("aredn", "@supernode[0]", "enable") == "1" then
	info['node_details']['mesh_supernode']=true
end

-- Mesh RF info
info['meshrf']={}
local radio=aredn.info.getMeshRadioDevice()

if ( radio ~= nil and radio ~= "" ) then
	info['meshrf']['status']="on"
	info['meshrf']['ssid']=aredn.info.getSSID()
	info['meshrf']['channel']=aredn.info.getChannel(radio)
	info['meshrf']['chanbw']=aredn.info.getChannelBW(radio)
	info['meshrf']['freq']=aredn.info.getFreq(radio)
	info['meshrf']['azimuth'] = aredn.info.getAzimuth()
	info['meshrf']['elevation'] = aredn.info.getElevation()
	info['meshrf']['height'] = aredn.info.getHeight()
	info['meshrf']['antenna'] = aredn.hardware.get_current_antenna(radio)
	info['meshrf']['antenna_aux'] = aredn.hardware.get_current_antenna_aux(radio)
else
	info['meshrf']['status']="off"
end

-- Tunnel info
info['tunnels']={}
-- ACTIVE TUNNELS
local atc=os.capture("ifconfig|grep tun|wc -l"):chomp()
local awc=0
if nixio.fs.stat("/usr/bin/wg") then
	awc=os.capture("wg|grep interface|wc -l"):chomp()
end
info['tunnels']['active_tunnel_count']=tonumber(atc) + tonumber(awc)

-- Location info
-- LAT/LON
local lat, lon = aredn.info.getLatLon()
info['lat']=lat
info['lon']=lon

-- GRID SQUARE
info["grid_square"]=aredn.info.getGridSquare()

-- UPTIME AND LOADAVGS
mynix=nixio.sysinfo()
info['sysinfo']={}
upsecs=mynix['uptime']
info['sysinfo']['uptime']=secondsToClock(upsecs)
info['sysinfo']['loads']=mynix['loads']
for n,x in ipairs(info['sysinfo']['loads']) do
	info['sysinfo']['loads'][n]=round2(x,2)
end

-- INTERFACES
local tif={}
local ift=get_interfaces()

for pos, i in pairs(ift) do
	local nim={}
	local ipv4=""
	if (i.name ~= "lo" and i.name ~= "wlan0-1" and i.name ~= "wlan1-1") then
		--table.print(i)
		nim['name']=i.name
		ipv4=tostring(i.ipaddrs[1])
		nim['ip']=ipFromCIDR(ipv4)
		if i.macaddr~=nil then	-- ie. tunXX interfaces have nil for macaddr
			nim['mac']=i.macaddr:upper()
		end
		table.insert(tif,nim)
	end
end
info['interfaces']=tif

-- HOSTS
if string.find(nixio.getenv("QUERY_STRING"):lower(),"hosts=1") then
	info['hosts']=aredn.info.all_hosts()
end

-- SERVICES
if string.find(nixio.getenv("QUERY_STRING"):lower(),"services=1") then
	info['services']=aredn.info.all_services()
end

-- LOCALLY HOSTED SERVICES ONLY
if string.find(nixio.getenv("QUERY_STRING"):lower(),"services_local=1") then
	info['services_local']=aredn.info.local_services()
end

-- LOCAL NEIGHBORS LINK INFO
if string.find(nixio.getenv("QUERY_STRING"):lower(),"link_info=1") then
	info['link_info']=aredn.olsr.getCurrentNeighbors(true)
end

-- LQM INFO
if string.find(nixio.getenv("QUERY_STRING"):lower(),"lqm=1") then
	local lqm = { enabled = false }
	if ctx:get("aredn", "@lqm[0]", "enable") == "1" then
		lqm.enabled = true
	end
	lqm.config = {
		min_snr = tonumber(ctx:get("aredn", "@lqm[0]", "min_snr")),
		margin_snr = tonumber(ctx:get("aredn", "@lqm[0]", "margin_snr")),
		min_distance = tonumber(ctx:get("aredn", "@lqm[0]", "min_distance")),
		max_distance = tonumber(ctx:get("aredn", "@lqm[0]", "max_distance")),
		auto_distance = tonumber(ctx:get("aredn", "@lqm[0]", "auto_distance") or "0"),
		min_quality = tonumber(ctx:get("aredn", "@lqm[0]", "min_quality")),
		margin_quality = tonumber(ctx:get("aredn", "@lqm[0]", "margin_quality")),
		ping_penalty = tonumber(ctx:get("aredn", "@lqm[0]", "ping_penalty")),
		user_blocks = ctx:get("aredn", "@lqm[0]", "user_blocks"),
		user_allows = ctx:get("aredn", "@lqm[0]", "user_allows")
	}
	lqm.info = {}
	if nixio.fs.stat("/tmp/lqm.info") then
		lqm.info = json.parse(io.open("/tmp/lqm.info", "r"):read("*a"))
	end
	info['lqm']=lqm
end

-- MESH NODES COUNT
if string.find(nixio.getenv("QUERY_STRING"):lower(),"nodes=1") then
	info['nodes']=aredn.info.getOLSRInfo()
end

-- Output the HTTP header for JSON
json_header()

-- Output the info table as json
print(json.stringify(info,true))