Revert "Revert "cancel run early if changelogs exists""

This reverts commit 3ecb278.

Author: bc-devrev

.github/workflows/changelog.yml

@@ -11,7 +11,16 @@ jobs:
     steps: 
     - name: Get current date
       id: date
-      run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+      run: |
+        echo "TODAY=$(date +'%Y-%m-%d')" >> ${GITHUB_ENV}
+        echo "LOG_FILES=fern/apis/*/changelog/$TODAY.md" >> ${GITHUB_ENV}
+    - name: Check changelog
+      run: |
+        if ls $LOG_FILES >/dev/null 2>&1; then
+          l=($LOG_FILES)
+          echo "${l[@]} already exist."
+          gh run cancel
+        fi
     - name: Check out repository content
       uses: actions/checkout@v2
       with:
@@ -35,33 +44,26 @@ jobs:
         base: 'base/fern/apis/public/openapi-public.yaml'
         revision: 'head/fern/apis/public/openapi-public.yaml'
         format: text
-        output-to-file: 'temp/public/${{ steps.date.outputs.date }}_oasdiff.md'
+        output-to-file: 'temp/public/${{ env.TODAY }}_oasdiff.md'
     - name: Running beta OpenAPI Spec diff action
       uses: oasdiff/oasdiff-action/diff@main
       with:
         base: 'base/fern/apis/beta/openapi-beta.yaml'
         revision: 'head/fern/apis/beta/openapi-beta.yaml'  
         format: text
-        output-to-file: 'temp/beta/${{ steps.date.outputs.date }}_oasdiff.md'
+        output-to-file: 'temp/beta/${{ env.TODAY }}_oasdiff.md'
     - name: Archive changelogs
       uses: actions/upload-artifact@v4
       with:
-        name: changelog-${{ steps.date.outputs.date }}
+        name: changelog-${{ env.TODAY }}
         path: temp/**
     - name: Prompt
       env:
           LLM_JWT: ${{ secrets.LLM_JWT }} 
       run: |
-        logfiles="fern/apis/*/changelog/${{ steps.date.outputs.date }}.md"
-
-        if ls $logfiles >/dev/null 2>&1; then
-          logfiles=($logfiles)
-          echo "${logfiles[@]} already exist."
-        else
-          python changelog.py --date ${{ steps.date.outputs.date }}
-          git config user.name github-actions
-          git config user.email [email protected]
-          git add fern/apis/*/changelog/${{ steps.date.outputs.date }}.md
-          git commit -m "generated by Claude"
-          git push
-        fi
+        python changelog.py --date ${{ env.TODAY }}
+        git config user.name github-actions
+        git config user.email [email protected]
+        git add ${{ env.LOG_FILES }}
+        git commit -m "generated by Claude"
+        git push