#!/bin/sh
###########################################################################
#
# Copyright (c) 2021-2023 Diality Inc. - All Rights Reserved.
#
# THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
# WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
#
# @file    wifi_scan.sh
#
# @author  (last)      Behrouz NematiPour
# @date    (last)      15-Jan-2025
# @author  (original)  Behrouz NematiPour
# @date    (original)  15-Jan-2025
#
############################################################################

# Description
#   Lists all the available Access Points using nmcli command of NetworkManager module.
# Parameters
#   No Parameters
# Returns
#   Sorted list of the APs in defined column as specified in the $COLUMNS.
# Considerations 
#   For the Application to work with the List of APs 
#   - it has to be sorted by SSID
#   - it has to use defined columns exactly as has been defined in $COLUMN.

# sources
. ./_errors_
. ./_functions_

# variables
PARAM_COUNT=0
COLUMNS="SSID,BSSID,FREQ,RATE,SIGNAL,SECURITY,WPA-FLAGS,RSN-FLAGS,IN-USE"

# functions

# checks
check_param_count "$#" "$PARAM_COUNT"

# main
OUTPUT="$(sudo nmcli -t -f $COLUMNS dev wifi list --rescan yes | sed 's/:/,/g;s/\\,/:/g' | sort)"
check_result "$?" "$ERR_CMDFAIL_WIFI_SCAN"

# exit gracefully
sleep 0.1
echo -e "$OUTPUT"
exit 0