action.yml

name: "Notify Slack on CI failure"
description: "Sends a Slack notification with workflow failure details"

inputs:
  slack-webhook-url:
    description: "Slack Webhook URL"
    required: true
  mention-channel:
    description: "Whether to mention the channel in the notification"
    required: false
    default: "true"

runs:
  using: "composite"
  steps:
    - name: Send Slack notification
      uses: slackapi/slack-github-action@45a88b9581bfab2566dc881e2cd66d334e621e2c # v3.0.3
      with:
        webhook: ${{ inputs.slack-webhook-url }}
        webhook-type: incoming-webhook
        payload: |
          text: ${{ github.repository }} - ${{ github.workflow }} failed on ${{ github.ref_name }}
          blocks:
            - type: "section"
              text:
                type: "mrkdwn"
                text: |
                  ${{ github.repository }} - *${{ github.workflow }}* failed on `${{ github.ref_name }}`
                  ${{ inputs.mention-channel == 'true' && '<!channel>' || '' }}
                  <${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|View Logs>