#!/bin/bash
#
# Author  : Gaston
# Date    : 30 November 2025
# Purpose : Finds Winlink RMS stations by channel near a given location
set -e
set -o pipefail
trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG
trap 'echo -e "${RED}\"${last_command}\" command failed with exit code $?.${NC}"' ERR

source /opt/emcomm-tools/bin/et-common

read -p "Enter latitude: " LAT
read -p "Enter longitude: " LON
read -p "Enter band (optional): " BAND
read -p "Enter mode (optional): " MODE

QUERY="http://localhost:1981/api/winlink/near?lat=${LAT}&lon=${LON}"
[[ -n "${BAND}" ]] && QUERY="${QUERY}&band=${BAND}"
[[ -n "${MODE}" ]] && QUERY="${QUERY}&mode=${MODE}"

OUT=$(curl -s "${QUERY}")

if [[ -z "${OUT}" ]] || [[ "${OUT}" = "[]" ]]; then
    echo "No Winlink RMS channels found."
    exit 1
fi

echo
echo "Nearby Winlink RMS Channels:"
echo "----------------------------"

echo "${OUT}" | jq -r '
    (["Station","Callsign","Lat","Lon","Mode","Freq","Band"] | @tsv),
    (.[] | [
        .callsign,
        .base_callsign,
        (.lat | tostring),
        (.lon | tostring),
        .mode,
        (.freq | tostring),
        .band
    ] | @tsv)
' | column -t -s $'\t'