Back port --self-update --major (#92)

[Feature]
- Restrict major version updates with --self-update unless --major is specified

To prepare for the upcoming major update, I have modified the --self-update behavior. Now, updating to a new major HeavyScript version requires the explicit use of the --major flag.

The new CLI is under development and can be found on the "args" branch. It will remain there until it's fully developed and tested.

functions/self_update.sh

@@ -4,6 +4,21 @@
 args=("$@")
 
 
+is_major_update() {
+    local current_version="${1#v}"
+    local latest_version="${2#v}"
+
+    local current_major_version="${current_version%%.*}"
+    local latest_major_version="${latest_version%%.*}"
+
+    if [[ "$latest_major_version" -gt "$current_major_version" ]]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+
 choose_branch() {
     clear -x
     echo "Pulling git information.."
@@ -86,14 +101,20 @@ update_func(){
     else
         latest_tag=$(git describe --tags "$(git rev-list --tags --max-count=1)")
         if  [[ "$hs_version" != "$latest_tag" ]] ; then
-            echo "Found a new version of HeavyScript, updating myself..."
-            git checkout --force "$latest_tag" &>/dev/null 
-            echo "Updating from: $hs_version"
-            echo "Updating To: $latest_tag"
-            echo "Changelog:"
-            curl --silent "https://api.github.com/repos/HeavyBullets8/heavy_script/releases/latest" | jq -r .body
-            echo 
-            return 111
+            if [[ "$include_major" == "true" ]] || ! is_major_update "${hs_version}" "${latest_tag}"; then
+                echo "Found a new version of HeavyScript, updating myself..."
+                git checkout --force "$latest_tag" &>/dev/null 
+                echo "Updating from: $hs_version"
+                echo "Updating To: $latest_tag"
+                echo "Changelog:"
+                curl --silent "https://api.github.com/repos/HeavyBullets8/heavy_script/releases/latest" | jq -r .body
+                echo 
+                return 111
+            else
+                echo "A major update is available: $latest_tag"
+                echo "Skipping the update due to major version change."
+                echo "To update to the latest version, run: heavyscript --self-update --major"
+            fi
         else 
             echo "HeavyScript is already the latest version:"
             echo -e "$hs_version\n\n"

heavy_script.sh

@@ -91,6 +91,9 @@ do
        restart-app)
                   restart_app=true
                   ;;
+             major)
+                  include_major=true
+                  ;;
                 *)
                   echo -e "Invalid Option \"--$OPTARG\"\n"
                   help