Add optional tag version input and implement tag existence check

- Added an optional input for setting a specific version if not incrementing
- Implemented a check to verify the existence of a tag before committing and tagging changes.

.github/workflows/publish.yml

@@ -6,6 +6,9 @@ on:
       part_to_increment:
         description: "Part to increment (1 for major, 2 for minor, 3 for patch)"
         required: true
+      tag_version:
+        description: "Version to set if not incrementing"
+        required: false
 
 jobs:
   publish:
@@ -34,12 +37,32 @@ jobs:
       - name: Update Version
         env:
           PART_TO_INCREMENT: ${{ github.event.inputs.part_to_increment }}
+          TAG_VERSION: ${{ github.event.inputs.tag_version }}
         run: |
-          chmod +x version
-          ./version "$PART_TO_INCREMENT"
-          echo "UPDATED_VERSION=$(grep "version=" library.properties | cut -d'=' -f2)" >> $GITHUB_ENV
+          if [ -n "$TAG_VERSION" ]; then
+            UPDATED_VERSION=$TAG_VERSION
+          else
+            chmod +x version
+            ./version "$PART_TO_INCREMENT"
+            UPDATED_VERSION=$(grep "version=" library.properties | cut -d'=' -f2)
+          fi
+          echo "UPDATED_VERSION=$UPDATED_VERSION" >> $GITHUB_ENV
+
+      - name: Check if tag exists
+        id: check_tag
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const tag = '${{ env.UPDATED_VERSION }}';
+            const { data: refs } = await github.git.listMatchingRefs({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: `tags/${tag}`
+            });
+            core.setOutput('tag_exists', refs.length > 0);
 
       - name: Commit changes
+        if: steps.check_tag.outputs.tag_exists == 'false'
         run: |
           git config --global user.name "github-actions[bot]"
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
@@ -49,12 +72,13 @@ jobs:
           git push origin master --force
 
       - name: Create Tag
-        if: ${{ env.UPDATED_VERSION != '' }}
+        if: steps.check_tag.outputs.tag_exists == 'false'
         run: |
           git tag -a "${{ env.UPDATED_VERSION }}" -m "Tagging version ${{ env.UPDATED_VERSION }}"
           git push origin "${{ env.UPDATED_VERSION }}"
 
       - name: Publish to PlatformIO
+        if: steps.check_tag.outputs.tag_exists == 'false'
         id: publish
         run: yes y | pio pkg publish
         continue-on-error: true
@@ -87,7 +111,7 @@ jobs:
             core.setOutput('release_notes', releaseNotes);
 
       - name: Create GitHub Release
-        if: success()
+        if: steps.check_tag.outputs.tag_exists == 'false'
         uses: actions/create-release@v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -97,3 +121,24 @@ jobs:
           draft: false
           prerelease: false
           body: ${{ steps.generate_release_notes.outputs.result }}
+
+      - name: Update GitHub Release
+        if: steps.check_tag.outputs.tag_exists == 'true'
+        uses: actions/github-script@v6
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          script: |
+            const { data: releases } = await github.repos.listReleases({
+              owner: context.repo.owner,
+              repo: context.repo.repo
+            });
+            const release = releases.find(r => r.tag_name === '${{ env.UPDATED_VERSION }}');
+            if (release) {
+              await github.repos.updateRelease({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                release_id: release.id,
+                body: '${{ steps.generate_release_notes.outputs.result }}'
+              });
+            }