#230 - Use static path to find provider button's img

[Gaetanbrl]

ref. issue #230

Description

This PR Introduced ProviderLogoResolver to centralize OAuth logo lookups according to datadir static directory (overrides) :

https://docs.georchestra.org/gateway/en/latest/user_guide/ui_customization/?h=thym#static-resources

• Java doc
• Tests

Here an example to use a custom png with franceconnect (boat) :

How to test ?

1. Fetch branch
2. Copy /templates into gateway's datadir
3. Copy /static into previous datadir/gateway/templates
4. Change datadir/gateway/application.yaml to use static (doc) ressources and templates (doc) :

in application.yaml, replace :

spring:
  cloud:

By :

spring:
  thymeleaf:
    prefix: file:${georchestra.datadir}/gateway/templates/
  web:
    resources:
      static-locations: file:${georchestra.datadir}/gateway/templates/static/
  webflux:
    static-path-pattern: /static/**
  cloud:

5. Play with PNG located in datadir/gateway/templates/static/img

Example, if you set a franceconnect provider, use a png names franceconnect.png in templates/static directory.

[f-necas]

You may have overengineered it.

You can access statc Location with :

 @Autowired(required = false)
    private WebProperties webProperties;

String[] locations = webProperties.getResources().getStaticLocations();
// ["classpath:/META...", "classpath:/reso...", "classpath:/stat...", "classpath:/publ...", "file:/home/..."]

Then we could iterate through paths in order to see in ClassPathResource if start with classpath: or FileSystemResource if start with file: .

This way we can order the lookup locaiton we want using the spring properties.

spring:
  web:
    resources:
      static-locations:  file:/etc/georchestra/gateway/resources/static/, classpath:/static/

[Gaetanbrl]

J'ai apporté les changements suite aux revues. Je reste en attente de retours.

[github-actions]

💚 All backports created successfully

Status	Branch	Result
✅	2.0.x

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