Upload build pdfs as artifacts (#7)

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
     container: makeappdev/uselatex:latest
     steps:
       - uses: actions/checkout@v4
-        with:
+        with: 
           fetch-depth: 0
 
       - name: Configure Git safe directory with GITHUB_WORKSPACE
@@ -41,15 +41,34 @@ jobs:
           mkdir -p build && cd build
           cmake ..
           make
-
+          
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-artifact
+          path: ./build/*.pdf
+      - name: Comment on PR with artifact link
+        if: ${{ github.event_name == 'pull_request' }}
+        uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const pr_number = context.payload.pull_request.number
+            const run_id = process.env.GITHUB_RUN_ID
+            const run_url = `https://github.com/${context.repo.owner}/${context.repo.repo}/actions/runs/${run_id}`
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: pr_number,
+              body: `:robot: The artifacts from this build are available [here](${run_url}).`
+            })
       - name: Prepare Deployment
         if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main'
         run: |
           mkdir -p export
           echo "# This branch is for deployment only" >> export/README.md
           cp build/*.pdf export
           cp build/git.id export
-
       - name: Deploy
         if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main'
         uses: JamesIves/[email protected]