Customizable parameters

[adamziel]

This action would be so useful to adopt in all the repositories out there. To do that, it needs to provide a degree of customization. I went through a few custom comment actions out in the wild and gathered a few things to parametrize before they can be swapped for this one:

• The comment body. It would be useful to make it a markdown template that accepts the following parameters:
  • target_repo_owner
  • target_repo_name
  • source_branch_name
  • pr_number
  • pr_url
  • ci_job_run_id
  • preview_url – based on the Blueprint below
  • preview_blueprint_hash – to link to, say, https://playground.wordpress.net/builder/builder.html#the same blueprint
• Blueprint for the preview, also possible to format with the variables above (example)

References

• https://github.com/WordPress/wordpress-develop/blob/trunk/.github/workflows/pull-request-comments.yml#L80
• https://github.com/WordPress/blueprints/blob/trunk/.github/workflows/preview-comment.yml
• https://github.com/GatherPress/gatherpress/pull/666/files#diff-4502a44b7956d5e6fb545c03eadbd0fcfa5eecc2752db489aadddbada771f5ea
• https://github.com/woocommerce/woocommerce/blob/67ab34aab2ad4dfc2f974e775d18994f559085a8/.github/workflows/pr-build-live-branch.yml#L111

Also – thank you so much for your great work here @vcanales!