#!/bin/sh -e
#
# wifi_quality: display wifi signal quality
#
# Copyright (C) 2008 Canonical Ltd.
# Copyright (C) 2011-2014 Dustin Kirkland
#
# Authors: Dustin Kirkland <[email protected]>
#
# 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/>.

__wifi_quality_detail() {
/sbin/iwconfig 2>/dev/null
}

__wifi_quality() {
local out bitrate quality
# iwconfig is expected to output lines like:
# Bit Rate=54 Mb/s Tx-Power=15 dBm
# Link Quality=60/70 Signal level=-50 dBm
# the awk below tokenizes the output and prints shell evalable results
out=`iwconfig $MONITORED_NETWORK 2>/dev/null |
awk '$0 ~ /[ ]*Link Quality./ {
sub(/.*=/,"",$2); split($2,a,"/");
printf "quality=%.0f\n", 100*a[1]/a[2] };
$0 ~ /[ ]*Bit Rate/ { sub(/.*[:=]/,"",$2); printf("bitrate=%s\n", $2); }
'`
eval "$out"
[ -z "$bitrate" ] && bitrate="0"
if [ -z "$quality" ] || [ "$quality" = "0" ]; then
quality="0"
fi
if [ "$bitrate" = "0" ] || [ "$quality" = "0" ] || [ -z "$bitrate" ] || [ -z "$quality"]; then
rm -f "$BYOBU_RUN_DIR/status.$BYOBU_BACKEND/wifi_quality"*
return
fi
printf "${ICON_WIFI}"; color b C k; printf "%s" "$bitrate"; color -; color C k; printf "%s" "$ICON_MBPS"; color -; color b C k; printf "%s" "$quality"; color -; color C k; printf "%s" "$PCT"; color --
}

# vi: syntax=sh ts=4 noexpandtab