ci: check and delete unused keys in the localization files

.github/workflows/check-localization.yaml

@@ -0,0 +1,80 @@
+name: Check Localization Keys Usage
+
+on:
+  workflow_dispatch:
+    inputs:
+      locale:
+        description: "Locale to check (e.g., en-US)"
+        required: true
+        default: "en-US"
+
+jobs:
+  check-localization:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: webfactory/[email protected]
+        with:
+          ssh-private-key: ${{ secrets.SSH_ASSETS_KEY }}
+
+      - name: Submoudles update
+        run: git -c submodule.auto-test.update=none submodule update --init --recursive
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '14'
+
+      - name: Install jq for JSON processing
+        run: sudo apt-get install jq
+
+      - name: Extract and remove unused localization keys
+        run: |
+          # Initialize the markdown summary with the header for the table
+          echo "## Unused Localization Keys" >> $GITHUB_STEP_SUMMARY
+          echo "| Localization Key | Status |" >> $GITHUB_STEP_SUMMARY
+          echo "| ---------------- | ------ |" >> $GITHUB_STEP_SUMMARY
+
+          # Define locale from input and file path for the JSON file
+          LOCALE=${{ github.event.inputs.locale }}
+          FILE_PATH="assets/translations/$LOCALE.json"
+
+          # Check if the localization file exists
+          if [ ! -f "$FILE_PATH" ]; then
+            echo "Localization file $FILE_PATH does not exist." >> $GITHUB_STEP_SUMMARY
+            exit 1
+          fi
+
+          # Variable to track if any keys are unused
+          UNUSED_KEYS=0
+
+          # Extract keys from the specified locale JSON file and check if they are used in .dart files in lib/
+          TEMP_FILE=$(mktemp)  # Temp file for modified JSON
+          jq 'keys' $FILE_PATH | tr -d '[],"' | tr -s ' ' '\n' | while read -r key; do
+            if ! grep -r "$key.tr()" ./lib/**/*.dart; then
+              echo "| $key | Not Used |" >> $GITHUB_STEP_SUMMARY
+              # Remove the unused key from the JSON file
+              jq "del(.\"$key\")" $FILE_PATH > "$TEMP_FILE" && mv "$TEMP_FILE" $FILE_PATH
+              UNUSED_KEYS=1
+            fi
+          done
+
+          # Commit and create a PR if there are unused keys
+          if [ "$UNUSED_KEYS" -eq 1 ]; then
+            git config --global user.name "github-actions[bot]"
+            git config --global user.email "github-actions[bot]@users.noreply.github.com"
+            git checkout -b remove-unused-localization-keys-$LOCALE
+
+            # Add and commit the changes
+            git add $FILE_PATH
+            git commit -m "Remove unused localization keys for locale $LOCALE"
+
+            # Push the branch
+            git push origin remove-unused-localization-keys-$LOCALE
+
+            # Create a pull request using GitHub CLI
+            gh pr create --title "Remove unused localization keys for locale $LOCALE" --body "This PR removes unused localization keys detected in the Flutter source code for locale $LOCALE."
+          else
+            echo "No unused localization keys found for locale $LOCALE." >> $GITHUB_STEP_SUMMARY
+          fi