fix: remote markdown url validation and suggestions

[dmijatovic]

Improve remote markdown detection

Closes #494

Changes proposed in this pull request:

• Changed label to "Markdown URL"
• created RSD api endpoint to validate url and avoid CORS error
• If provided url returns html page we raise error and suggest raw markdown url. Suggested url work properly for Github, Gitlab and Bitbucket.
• Allow url params in regex check

How to test:

• make start to build and generate test data
• login as rsd admin and edit existing software or create new entry.
• try remote markdown with following urls:
  • https://github.com/research-software-directory/RSD-as-a-service/blob/main/README.md
  • https://raw.githubusercontent.com/research-software-directory/RSD-as-a-service/refs/heads/main/README.md
  • https://gitlab.com/dmijatovic/nexter-demo/-/blob/master/README.md?ref_type=heads
  • https://gitlab.com/dmijatovic/nexter-demo/-/raw/master/README.md?ref_type=heads
  • https://bitbucket.org/dmijatovic/publictest/src/main/README.md
  • https://bitbucket.org/dmijatovic/publictest/raw/85e8651f290d058ad7832d09efa2fd63873b648b/README.md
  • https://codebase.helmholtz.cloud/research-software-directory/RSD-as-a-service/-/blob/main/README.md?ref_type=heads
  • https://codebase.helmholtz.cloud/research-software-directory/RSD-as-a-service/-/raw/main/README.md?ref_type=heads
• try "Use suggestion" button

Example not raw markdown message with suggestion

PR Checklist:

• [ ] Increase version numbers in docker-compose.yml
• [x] Link to a GitHub issue
• [x] Update documentation
• [ ] Tests

[jmaassen]

I just noticed I missed one thing:

When I add the readme from kernel tuner:

https://github.com/KernelTuner/kernel_tuner/blob/master/README.md

It suggests use the following:

https://raw.githubusercontent.com/KernelTuner/kernel_tuner/refs/heads/master/README.md

And then successfully imports this.

However, when I then do a "view software", the description is empty, and when I return using "Edit software" the markdown is gone and the option reset to "custom markdown".

[sonarcloud[bot]]

Quality Gate passed for 'rsd-frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
30.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[dmijatovic]

@jmaassen Well spotted! I have fixed the bug, please check again.

[jmaassen]

Works as expected now. However, I did get the following while testing:

Unfortunately, I cannot reproduce this a second time?

I tested the bitbucket URL replacement first, followed by the helmholtz one. The markdown loaded as expected, but the error was also shown. When clicking "view software" the description reverted to the bitbucket example. Adding the helmholtz one a second time did work, and after that I could not reproduce the error.

[dmijatovic]

@jmaassen I cannot reproduce the error. Shell we merge this PR as it is?