#!/bin/sh /etc/rc.common
# Copyright (C) 2013 OpenWrt.org

START=50
USE_PROCD=1

NAME=usteer
PROG=/sbin/usteerd

. /lib/functions/network.sh
. /usr/share/libubox/jshn.sh
. /lib/functions.sh

load_ifaces() {
	local network="$(uci get usteer.@usteer[-1].network)"
	for n in $network; do
		local device
		json_load "$(ifstatus $n)"
		json_get_var device l3_device
		echo -n "$device "
	done
}

_add_string() {
	json_add_string "" "$1"
}

uci_option_to_json_string_array() {
	local cfg="$1"
	local option="$2"

	json_add_array "$option"
	config_list_foreach "$cfg" "$option" _add_string
	json_close_array
}

uci_option_to_json_bool() {
	local cfg="$1"
	local option="$2"
	local val

	config_get_bool val "$cfg" $option
	[ -n "$val" ] && json_add_boolean $option $val
}

uci_option_to_json_string() {
	local cfg="$1"
	local option="$2"
	local val

	config_get val "$cfg" "$option"
	[ -n "$val" ] && json_add_string $option "$val"
}

uci_option_to_json() {
	local cfg="$1"
	local option="$2"
	local val

	config_get val "$cfg" $option
	[ -n "$val" ] && json_add_int $option $val
}

uci_usteer() {
	local cfg="$1"

	uci_option_to_json_bool "$cfg" syslog
	uci_option_to_json_bool "$cfg" load_kick_enabled
	uci_option_to_json_bool "$cfg" assoc_steering
	uci_option_to_json_string "$cfg" node_up_script
	uci_option_to_json_string_array "$cfg" ssid_list
	uci_option_to_json_string_array "$cfg" event_log_types

	for opt in \
		debug_level \
		sta_block_timeout local_sta_timeout local_sta_update \
		max_retry_band seen_policy_timeout \
		load_balancing_threshold band_steering_threshold \
		remote_update_interval \
		min_connect_snr min_snr signal_diff_threshold \
		initial_connect_delay \
		roam_kick_delay roam_scan_tries \
		roam_scan_snr roam_scan_interval \
		roam_trigger_snr roam_trigger_interval \
		load_kick_threshold load_kick_delay load_kick_min_clients \
		load_kick_reason_code
	do
		uci_option_to_json "$cfg" "$opt"
	done
}


load_config() {
	[ "$ENABLED" -gt 0 ] || return

	ubus -t 10 wait_for usteer

	json_init
	json_add_array interfaces
	for i in $(load_ifaces); do
		json_add_string "" "$i"
	done
	json_close_array

	config_load usteer
	config_foreach uci_usteer usteer

	ubus call usteer set_config "$(json_dump)"
}

reload_service() {
	start
	load_config
}

service_started() {
	load_config
}

service_triggers() {
	procd_add_reload_trigger usteer
	procd_add_raw_trigger "interface.*" 2000 /etc/init.d/usteer reload
}

start_service()
{
	local network="$(uci -q get usteer.@usteer[-1].network)"
	ENABLED="$(uci -q get usteer.@usteer[-1].enabled)"
	ENABLED="${ENABLED:-1}"
	CHANNEL="$(uci -q get usteer.@usteer[-1].autochannel)"
	CHANNEL="${CHANNEL:-0}"

	[ "$ENABLED" -gt 0 ] || return

	procd_open_instance
	procd_set_param command "$PROG"
	procd_close_instance
	
	[ "$CHANNEL" -gt 0 ] || return

	procd_open_instance
	procd_set_param command "/usr/libexec/uchannel.uc"
	procd_set_param respawn 1 300 0
	procd_close_instance
}
