Allow download multiple content first as ZIP

The plan is developing it the next week and releasing it at beta7.

beta8

Working on it.

Oh it was on my plans doing this but I haven't started yet, so contributions are welcome :)

If you are going to work on it, I expect that this feature works technically as follows:

- Do a Drupal Action Plugin to save the markdown generated by content_first.builder service into a temporary file.
- Allow this action to be enabled at /admin/content, so any content needing downloading can be selected.
- After doing the bulk operations, save all the files into a ZIP.
- Either display a Drupal message linking the generated file, or auto download it in the next page load.

This would be a "Drupal way" solution that would meet the requirement, otherwise it can become tricky I think.

Yes, I am on it and doing it the same way as you mentioned.
@omarlopesino We want both HTML and Markdown, or just Markdown, in the downloaded ZIP.

If it is easy, we could add a selector in the action plugin configuration form to choose between HTML or Markdown. My only concern is I don't remember if that configuration is global for all the selected elements, or is specific for each one. If it is global, go for it. Otherwise, only markdown.

@omarlopesino I have created an action that downloads a ZIP file. For now, I have only created action for markdown.

For reference, I am attaching a video on how it works.

Please review.

Thanks

@kul.pratap I tried this MR !3 mergeable on Drupal version- 10.3.1-dev, the patch was applied successfully, but I am not getting that option to download the zip as shown in the video.
Also, while I was trying to access the node- Content first tab, it's throwing an error.
Please check and let me know if I have missed any steps here.

@sandeep_k you have not installed the "league/html-to-markdown": "^5.1" this is a package which is require to run this module.
You can see in the composer.json
After that reinstall the module.

It works perfect, thanks also for correcting most of styling errors reported by drupalci!

I've done some slight adjustments and I am merging it.

Thanks!

Released at beta9