From 47696a43af406fa878da3c8f4b206d0b6d808fa0 Mon Sep 17 00:00:00 2001
From: Ducky <ducky@zyrio.cloud>
Date: Sun, 1 Oct 2023 02:44:53 +0100
Subject: [PATCH] osm-garmin: improve map versioning

---
 osm-garmin/app/build-gmap.sh | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/osm-garmin/app/build-gmap.sh b/osm-garmin/app/build-gmap.sh
index fb5c65d..d9929b0 100755
--- a/osm-garmin/app/build-gmap.sh
+++ b/osm-garmin/app/build-gmap.sh
@@ -19,13 +19,21 @@ function build_gmap() {
 
     region_shortname="$(get_region_shortname "$region")"
     generated_map_dir="$out_dir/$region_shortname/"
+    version_path="$generated_map_dir/version.txt"
 
     bounds_dir_md5="$(get_md5_dir "$bounds_dir")"
     map_md5="$(get_md5 "$maps_dir/$region_shortname.osm.pbf")"
     style_md5="$(get_md5 "$styles_dir/$style.TYP")"
 
-    version="$(echo "$bounds_dir_md5|$map_md5|$style_md5" | md5sum | cut -d' ' -f1)"
-    version_path="$generated_map_dir/version.txt"
+    version_id=""
+    version_md5="$(echo "$bounds_dir_md5|$map_md5|$style_md5" | md5sum | cut -d' ' -f1)"
+
+    if [[ -f "$version_path" ]]; then
+        version_id="$(cat "$version_path" | cut -d'|' -f1)"
+        version_id="$((version_id+1))"
+    fi
+
+    version="$version_id|$version_md5"
 
     build="true"
     build_failed="false"
@@ -43,7 +51,7 @@ function build_gmap() {
 
         family_name=""
         product_id="$region_id"
-        product_version="$(date --utc +%y%j%H%M)"
+        product_version="$version_id"
 
         [[ -n $OSMGARMIN_MAP_FAMILY_NAME ]] && family_name="$OSMGARMIN_MAP_FAMILY_NAME"