Update release.yml (#15)

Author: lauravoicu

.github/workflows/release.yml

@@ -2,20 +2,18 @@ name: Release
 
 on:
   push:
-    tags: [ 'v*.*.*' ]
-  workflow_dispatch: {}
+    tags: [ 'v*.*.*' ]   # only runs on semver-like tags
+  workflow_dispatch: {}  # manual runs won't publish unless also with a tag
 
 permissions:
   contents: read
 
 jobs:
   build-publish:
-    # uncomment the next line ONLY if you set an Environment name on PyPI's Trusted Publisher
-    # environment: pypi
     runs-on: ubuntu-latest
     permissions:
-      contents: write        # attach assets to GH Release
-      id-token: write        # OIDC for PyPI Trusted Publisher
+      contents: write     # attach assets to GH Release
+      id-token: write     # OIDC for PyPI Trusted Publisher
     steps:
       - name: Checkout
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
@@ -25,7 +23,7 @@ jobs:
         with:
           python-version: "3.12"
 
-      # Install build + twine via pipx (no raw pip)
+      # Tools via pipx (pinned; no raw pip)
       - name: Install pipx + tools
         run: |
           set -euxo pipefail
@@ -36,8 +34,23 @@ jobs:
           pipx install build==1.2.2
           pipx install twine==5.1.1
 
+      # tag (vX.Y.Z) must match pyproject.toml version (X.Y.Z)
+      - name: Check version matches tag
+        id: vercheck
+        run: |
+          TAG="${GITHUB_REF_NAME#v}"
+          PYVER=$(python - <<'PY'
+            import sys, tomllib, pathlib
+            data = tomllib.loads(pathlib.Path("pyproject.toml").read_text(encoding="utf-8"))
+            print(data["project"]["version"])
+          PY
+          )
+          echo "tag=${TAG}"
+          echo "pyproject=${PYVER}"
+          test "$PYVER" = "$TAG" || { echo "ERROR: pyproject.toml version != tag"; exit 1; }
+
       - name: Build distributions
-        run: python -m build -o dist
+        run: pyproject-build -o dist  
 
       - name: Twine check
         run: twine check dist/*
@@ -51,8 +64,28 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+      # skip if version already on PyPI (prevents "File already exists")
+      - name: Skip if version exists on PyPI
+        id: pypi-exists
+        run: |
+          PKG="decision-security"
+          VER="${GITHUB_REF_NAME#v}"
+          python - <<PY
+            import json, sys, urllib.request
+            pkg = sys.argv[1]; ver = sys.argv[2]
+            try:
+              with urllib.request.urlopen(f"https://pypi.org/pypi/{pkg}/json", timeout=10) as r:
+                data = json.load(r)
+              if ver in data.get("releases", {}):
+                print(f"Version {ver} already on PyPI; skipping publish.")
+                sys.exit(78)  # neutral
+            except Exception:
+              pass
+          PY
+        continue-on-error: true
+
       - name: Publish to PyPI (OIDC Trusted Publisher)
-        if: startsWith(github.ref, 'refs/tags/')
+        if: startsWith(github.ref, 'refs/tags/') && steps.pypi-exists.outcome != 'success'
         uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
         with:
           print-hash: true