improve .sh file and expand ci

.github/workflows/ci.yml

@@ -146,3 +146,17 @@ jobs:
     - name: Create source and wheel dist
       run: |
         python -m build
+
+  sdk-check-copyright:
+    # This job checks that the copyright year in the header of all files is up to date
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install required dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y bash git
+    - name: Run copyright check
+      run: |
+        chmod +x ./etc/scripts/set_copyright_year.sh
+        CHECK_MODE=true ./etc/scripts/set_copyright_year.sh

etc/scripts/set_copyright_year.sh

@@ -11,5 +11,17 @@
 # notice (in case the first line is a shebang).
 
 while read -rd $'\0' year file; do
-    sed -i "1,2s/^\(# Copyright (c) \)[[:digit:]]\{4,\}/\1$year/" "$file"
+    # Extract the first year from the copyright notice
+    current_year=$(sed -n '1,2s/^\(# Copyright (c) \)[^0-9]*\([0-9]\{4\}\)\([^\n]*\)/\2/p' "$file")
+
+    if $CHECK_MODE && [[ "$current_year" != "$year" ]]; then
+        echo "Error: Copyright year mismatch in file $file. Expected $year, found $current_year."
+        exit 1
+    fi
+
+    if ! $CHECK_MODE && [[ "$current_year" != "$year" ]]; then
+        sed -i "1,2s/^\(# Copyright (c) \)[[:digit:]]\{4,\}/\1$year/" "$file"
+        echo "Updated copyright year in $file"
+    fi
 done < <(git ls-files -z "$@" | xargs -0I{} git log -1 -z --format="%ad {}" --date="format:%Y" "{}")
+