Fix PR number in publish sizes

Author: P-R-O-C-H-Y

Diff for: .github/workflows/publishsizes.yml

@@ -11,7 +11,6 @@ env:
   # It's convenient to set variables for values used multiple times in the workflow
   SKETCHES_REPORTS_PATH: artifacts/sizes-report
   GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
-  PR_NUMBER: ${{ github.event.workflow_run.pull_requests[0].number }}
 
 jobs:
   sizes-test-results:
@@ -22,21 +21,34 @@ jobs:
       github.event.workflow_run.conclusion == 'success'
 
     steps:
-      - name: Download and Extract Artifacts
+      - name: Checkout code
+        uses: actions/checkout@v4  # This step checks out the repository's code at gh-pages branch
+        with:
+          ref: gh-pages
+
+      - name: Create folder structure
         run: |
           mkdir -p artifacts && cd artifacts
           mkdir -p sizes-report
           mkdir -p sizes-report/master
           mkdir -p sizes-report/pr
+
+      - name: Download JSON file
+        run: |
+          mv master_cli_compile/*.json artifacts/sizes-report/master/
+
+      - name: Download and Extract Artifacts
+        run: |
+          cd artifacts
           artifacts_url=${{ github.event.workflow_run.artifacts_url }}
           gh api "$artifacts_url" -q '.artifacts[] | [.name, .archive_download_url] | @tsv' | while read artifact
           do
             IFS=$'\t' read name url <<< "$artifact"
             gh api $url > "$name.zip"
             unzip -j "$name.zip" -d "temp_$name"
-            if [[ "$name" == *"master"* ]]; then
-              mv "temp_$name"/* sizes-report/master
-            elif [[ "$name" == *"pr"* ]]; then
+            if [[ "$name" == "pr_num" ]]; then
+              mv "temp_$name"/* sizes-report
+            elif [[ "$name" == "pr_cli"* ]]; then
               mv "temp_$name"/* sizes-report/pr
             else
               mv "temp_$name"/* sizes-report
@@ -45,10 +57,16 @@ jobs:
           done
           echo "Contents of parent directory:"
           ls -R ..
+
+      - name: Read the pr_num file
+        id: pr_num_reader
+        uses: juliangruber/read-file-action@v1
+        with:
+          path: ./artifacts/sizes-report/pr_num.txt
 
       - name: Report results
         uses: P-R-O-C-H-Y/report-size-deltas@sizes_v2
         with:
           sketches-reports-source: ${{ env.SKETCHES_REPORTS_PATH }}
           github-token: ${{ env.GITHUB_TOKEN }}
-          pr-number: ${{ env.PR_NUMBER }}
+          pr-number: "${{ steps.pr_num_reader.outputs.content }}"