Automate releasing new versions of the setup-dotnet action

.github/workflows/release-new-action-version.yml

@@ -0,0 +1,107 @@
+name: Release new action version
+on:
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+defaults:
+  run:
+    shell: pwsh
+
+jobs:
+  update_tag:
+    name: Update the major tag to include the ${{ github.event.inputs.TAG_NAME }} changes
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check if the ${{ github.event.inputs.TAG_NAME }} tag exists
+      id: validate-source-tag
+      uses: actions/github-script@v3
+      with:
+        script: |
+          try{
+            const sourceTag = await github.git.getRef({
+              ...context.repo,
+              ref: "tags/${{ github.event.inputs.TAG_NAME }}"
+            });
+
+            const sourceTagSHA = sourceTag.data.object.sha
+            core.setOutput('source-tag-sha', sourceTagSHA)
+          } catch (error) {
+            core.setFailed(error.message);
+          }
+
+    - name: Validate the ${{ github.event.inputs.TAG_NAME }} tag
+      run: |
+        $versionToValidate = "${{ github.event.inputs.TAG_NAME }}".TrimStart("v")
+        if ($versionToValidate.Split(".").length -lt 3) {
+          echo "::error::The version specified in the ${{ github.event.inputs.TAG_NAME }} tag is short. You have to specify the full version, for example: 'v1.0.0'"
+          exit 1
+        }
+
+        [Semver]$semanticVersion = $null
+        if(-not [Semver]::TryParse($versionToValidate, [ref]$semanticVersion)) {
+          echo "::error::The ${{ github.event.inputs.TAG_NAME }} tag contains unsupported type of version. Only semantic versioning specification is acceptable"
+          exit 1
+        }
+
+        if ($semanticVersion.PreReleaseLabel -or $semanticVersion.BuildLabel) {
+          echo "::error::You have to specify only stable version to update the major tag"
+          exit 1
+        }
+
+    - name: Update the major tag
+      id: update-major-tag
+      uses: actions/github-script@v3
+      with:
+        script: |
+          try{
+            const majorTag = "${{ github.event.inputs.TAG_NAME }}".split(".")[0];
+            core.setOutput('major-tag', majorTag)
+            const refName = `tags/${majorTag}`;
+
+            const { data: foundRefs } = await github.git.listMatchingRefs({
+              ...context.repo,
+              ref: refName
+            });
+
+            const matchingRef = foundRefs.find( refObj => refObj.ref.endsWith(refName) );
+            
+            if (matchingRef !== undefined) {
+              core.info(`Updating the ${majorTag} tag to point to the ${{ github.event.inputs.TAG_NAME }} tag`);
+              await github.git.updateRef({
+                ...context.repo,
+                ref: refName,
+                sha: '${{ steps.validate-source-tag.outputs.source-tag-sha }}',
+                force: true
+              });
+            } else {
+              core.info(`Creating the ${majorTag} tag from the ${{ github.event.inputs.TAG_NAME }} tag`);
+              await github.git.createRef({
+                ...context.repo,
+                ref: `refs/${refName}`,
+                sha: '${{ steps.validate-source-tag.outputs.source-tag-sha }}'
+              });
+            }
+          } catch (error) {
+            core.setFailed(error.message);
+          }
+
+    - name: Send slack message
+      if: failure()
+      run: |
+        curl `
+          -X POST `
+          -H 'Content-type: application/json' `
+          --data '{\"text\":\"Failed to update a major tag for the ${{ github.repository }} action\"}' `
+          ${{ secrets.SLACK }}
+
+    - name: Send slack message
+      if: success()
+      run: |
+        curl `
+          -X POST `
+          -H 'Content-type: application/json' `
+          --data '{\"text\":\"The ${{ steps.update-major-tag.outputs.major-tag }} tag has been successfully updated for the ${{ github.repository }} action to include changes from the ${{ github.event.inputs.TAG_NAME }}\"}' `
+          ${{ secrets.SLACK }}