Add GH Action to check liquid test dependencies on PR review requests

.github/workflows/check_liquid_test_dependencies.yml

@@ -0,0 +1,144 @@
+name: Check liquid test dependencies
+run-name: Add dependencies comment to PR on review request
+on:
+  pull_request:
+    types: [review_requested]
+
+jobs:
+  report-dependencies:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: read
+      issues: write
+    steps:
+      - name: Checkout Repository - Fetch all history for diff
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get changed liquid/config files
+        id: changed-files
+        uses: tj-actions/changed-files@v41
+        with:
+          since_last_remote_commit: false
+          dir_names: false
+          ref: "main"
+          files: |
+            **/**.{liquid,yml,yaml,json}
+
+      - name: Filter templates changed
+        id: templates_changed
+        run: |
+          pattern="(?:reconciliation_texts|shared_parts)/([^/]+)/"
+          changed_files="${{ steps.changed-files.outputs.all_changed_files }}"
+          if [ -n "$changed_files" ]; then
+            filtered_names=($(printf "%s\n" "$changed_files" | grep -oP "$pattern" || true))
+            if [ $? -ne 0 ]; then
+              echo "No files match the pattern"
+              changed_templates=()
+            else
+              filtered_names=("${filtered_names[@]%/}")
+              changed_templates=($(printf "%s\n" "${filtered_names[@]}" | sort -u))
+            fi
+          else
+            echo "No changed files"
+            changed_templates=()
+          fi
+          if [ ${#changed_templates[@]} -eq 0 ]; then
+            echo "changed_templates=[]" >> $GITHUB_OUTPUT
+            echo "No template directories changed."
+          else
+            echo "changed_templates=${changed_templates[*]}" >> $GITHUB_OUTPUT
+            echo "Changed template(s): ${changed_templates[*]}"
+          fi
+          exit 0
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install silverfin-cli
+        run: |
+          npm install https://github.com/silverfin/silverfin-cli.git
+          node ./node_modules/silverfin-cli/bin/cli.js -V
+
+      - name: Run checkLiquidTestDependencies and report
+        id: report
+        env:
+          CHANGED_TEMPLATES: ${{ steps.templates_changed.outputs.changed_templates }}
+        run: |
+          if [ -z "$CHANGED_TEMPLATES" ] || [ "$CHANGED_TEMPLATES" = "[]" ]; then
+            echo "dependency_handles=" >> $GITHUB_OUTPUT
+            echo "No reconciliation_texts or shared_parts changed."
+            exit 0
+          fi
+
+          node -e "
+          const fs = require('fs');
+          const path = require('path');
+          const fsUtils = require('./node_modules/silverfin-cli/lib/utils/fsUtils');
+          const paths = process.env.CHANGED_TEMPLATES.trim().split(/\s+/).filter(Boolean);
+          const allHandles = [];
+          for (const templatePath of paths) {
+            let handle = path.basename(templatePath);
+            const configPath = path.join(templatePath, 'config.json');
+            if (fs.existsSync(configPath)) {
+              try {
+                const config = JSON.parse(fs.readFileSync(configPath, 'utf8'));
+                handle = config.handle || config.name || handle;
+              } catch (_) {}
+            }
+            try {
+              const deps = fsUtils.checkLiquidTestDependencies(handle);
+              const list = Array.isArray(deps) ? deps : [];
+              list.forEach(h => allHandles.push(h));
+            } catch (err) {
+              console.error(handle + ': ' + err.message);
+            }
+          }
+          fs.writeFileSync('dependency_handles.txt', allHandles.join('\n'), 'utf8');
+          console.log('Dependencies:', allHandles.length ? allHandles.join(', ') : '(none)');
+          "
+
+      - name: Comment PR with dependencies
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const fs = require('fs');
+            const raw = fs.existsSync('dependency_handles.txt')
+              ? fs.readFileSync('dependency_handles.txt', 'utf8')
+              : '';
+            const handles = raw.trim().split('\n').filter(Boolean);
+            const bulletList = handles.length
+              ? handles.map(h => '- ' + h).join('\n')
+              : '- (none)';
+            const body = 'We have identified following dependencies:\n\n' + bulletList;
+
+            const commentMarker = '<!-- check_liquid_test_dependencies -->';
+            const fullBody = commentMarker + '\n\n' + body;
+
+            const { data: comments } = await github.rest.issues.listComments({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number
+            });
+
+            const existing = comments.find(c => c.body && c.body.includes(commentMarker));
+
+            if (existing) {
+              await github.rest.issues.updateComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                comment_id: existing.id,
+                body: fullBody
+              });
+            } else {
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body: fullBody
+              });
+            }