WIP post preview comment

Signed-off-by: Antoine THEBAUD <[email protected]>

actions/preview_dashboards/action.yaml

@@ -26,11 +26,28 @@ runs:
   steps:
     - name: Run the `dac preview` command
       run: |
-        percli dac preview \
+        preview_output=$(percli dac preview \
           $([[ -n "${{ inputs.directory }}" ]] && echo "-d ${{ inputs.directory }}") \
           $([[ -n "${{ inputs.file }}" ]] && echo "-f ${{ inputs.file }}") \
           $([[ -n "${{ inputs.output }}" ]] && echo "-o ${{ inputs.output }}") \
           $([[ -n "${{ inputs.prefix }}" ]] && echo "--prefix ${{ inputs.prefix }}") \
           $([[ -n "${{ inputs.project }}" ]] && echo "--project ${{ inputs.project }}") \
-          $([[ -n "${{ inputs.ttl }}" ]] && echo "--ttl ${{ inputs.ttl }}")
+          $([[ -n "${{ inputs.ttl }}" ]] && echo "--ttl ${{ inputs.ttl }}"))
+        echo "${preview_output}" > preview_output.json
       shell: bash
+
+    - name: Post preview links to PR
+      if: ${{ github.event_name == 'pull_request' }}
+      uses: actions/github-script@v6
+      with:
+        script: |
+          const fs = require('fs');
+          const data = JSON.parse(fs.readFileSync('preview_output.json', 'utf8'));
+          const previewLinks = data.map(item => `- [${item.Project}/${item.Dashboard}](${item.Preview})`).join('\n');
+          const commentBody = `### Dashboard Previews\nThe following dashboards have been deployed as previews:\n\n${previewLinks}`;
+          github.rest.issues.createComment({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            issue_number: context.issue.number,
+            body: commentBody
+          });