Complex variable type definitions and validations

[pseudomorph]

Describe the solution you'd like

Current type specifications do not allow for complex definition of list and map types. Furthermore, validators are mostly centered on string type validations.

Seems that there's opportunity to implement a richer typing and validation framework.

It might be possible to implement this by extending the current framework. Perhaps something like the following:

.i.e.:

variable:
  - name: list-of-ints
     type: list[int]
     validations:
       - required
       - length-1-100 # length of list
       - each:
          - max-1000 # max int value
  - name: map-of-ints
     type: map[string, int]
     validations:
       - key:
         - alpha
       - each:
          - max-1000 # max int value
  - name: map-of-lists-of-strings
     type: map[string, list[string]]
     validations:
       - required
       - key:
          - alpha
       - each:
          - each:
             - email

But it might be worth taking a step back and considering other implementations.

This could also be an opportunity to look for a better maintained validation library, as https://github.com/go-ozzo/ozzo-validation/ hasn't been updated in 5 years.

Let me know if there is value here!