Scripts: add automatic comment on pull requests

.forgejo/workflows/deploy_hosted.yml

@@ -66,16 +66,20 @@ jobs:
       - name: unzipping remote file
         run: ssh hetzner "cd /root/staging && rm -rf ${{ github.ref_name }} && unzip ${{ github.ref_name }}.zip && rm -rf /root/public/${{ github.ref_name }} && mv /root/staging/${{ github.ref_name }}/ /root/public/ && rm ${{ github.ref_name }}.zip"
 
-      - name: Extract PR number
-        run: echo "PR_NUMBER=$(echo $FORGEJO_REF_NAME | cut -d'/' -f3)" >> $FORGEJO_ENV
-
-      - name: add comment to PR
-        if: env.PR_NUMBER != ''
+      - name: Comment on the PR
         run: |
-          curl -X POST "https://source.mapcomplete.org/api/v1/repos/${FORGEJO_REPOSITORY}/issues/${PR_NUMBER}/comments" \
+          PR_NUMBER=$(echo ${{ github.event.pull_request.number || github.event.issue.number }})
+          if [[ -n "$PR_NUMBER" ]]
+          then
+          echo "Found a pull request or issue number, will post to $PR_NUMBER ..."
+          MSG=$(echo "Congratulations! This PR been successfully built and has been deployed. It is (temporarily) available on https://builds.mapcomplete.org/${PR_NUMBER}")
+          BODY="{\"body\": \"$MSG\"}"
+          # Token must have following permissions: issue > read and write
+          curl -X POST "https://source.mapcomplete.org/api/v1/repos/${GITHUB_REPOSITORY}/issues/${PR_NUMBER}/comments" \
           -H "Content-Type: application/json" \
           -H "Authorization: token $FORGEJO_TOKEN" \
-          -d '{"body": "This PR has been deployed and is (temporarily) available on https://builds.mapcomplete.org/${PR_NUMBER}"}'
+          -d "$BODY"
+          fi
         env:
           FORGEJO_TOKEN: ${{ secrets.FORGEJO_TOKEN }}