From fa639094a796457d89b9ab9b06b9a323dae1972b Mon Sep 17 00:00:00 2001
From: thetechprepper <info@thetechprepper.com>
Date: Thu, 5 Jun 2025 05:24:01 -0700
Subject: [PATCH] et-aircraft - Added initial support for updating the map
 center based on the coordinates from a supported ETC GPS unit

---
 overlay/opt/emcomm-tools/bin/et-aircraft | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/overlay/opt/emcomm-tools/bin/et-aircraft b/overlay/opt/emcomm-tools/bin/et-aircraft
index 3870507..f5a9ee9 100755
--- a/overlay/opt/emcomm-tools/bin/et-aircraft
+++ b/overlay/opt/emcomm-tools/bin/et-aircraft
@@ -12,11 +12,12 @@
 # 1. dump1099 is launched
 # 2. A map is launched
 
+# TODO: Increse size of aircraft
+# TODO: Research why RTL-SDR v4 does not work
 # TODO: Check for RTL-SDR device
 # TODO: Add a systemd user service to start dump1090
-# TODO: Use local offline map
-# TODO: Move map to current position
 # TODO: Use icon and add to launcher
+# TODO: Use local new ETC offline map engine
 
 source /opt/emcomm-tools/bin/et-common
 
@@ -33,6 +34,22 @@ CWD_DIR=$(pwd)
 
 cd ${DUMP1090_CONF_DIR}
 
+# TODO: Check if I need to look for /dev/et-gps first
+MY_LAT_LON=$(et-system-info et-gps)
+if [[ $? -eq 0 ]]; then
+  if echo "${MY_LAT_LON}" | grep -Eq '^[-+]?[0-9]+(\.[0-9]+)?\s*,\s*[-+]?[0-9]+(\.[0-9]+)?$'; then
+    LAT=$(echo ${MY_LAT_LON} | cut -d "," -f1)
+    LON=$(echo ${MY_LAT_LON} | cut -d "," -f2)
+    ZOOM=10
+
+    sed -i "s/CenterLat=[^;]*;/CenterLat=${LAT};/g" ${DUMP1090_MAP_HTML}
+    sed -i "s/CenterLon=[^;]*;/CenterLon=${LON};/g" ${DUMP1090_MAP_HTML}
+    sed -i "s/setView(\[.*\], *[0-9]*);/setView([${LAT}, ${LON}], ${ZOOM});/" ${DUMP1090_MAP_HTML}
+
+    et-log "Updated map center with your current location."
+  fi
+fi
+
 # replace with systemd
 CMD="dump1090 --net --net-http-port 1090"
 et-log "Starting dump1090 in ${DUMP1090_CONF_DIR} with: ${CMD}"