the default language added to the setting service

[2403905]

Description

Related Issue

• Fixes https://github.com/owncloud/enterprise/issues/5915

Motivation and Context

How Has This Been Tested?

• test environment: Local.
• Please fist read the notice in a readme!
• test case 1: Set SETTINGS_DEFAULT_LANGUAGE=de, run ocis. Log in as admin, the UI language has to be DE. admin creates a file and shares it with einstein.
  Expected result:
• If einstein did change a language in a setting to a language different from DE then einstein would receive a letter in DE.
• If einstein already changed a language in a setting to language then einstein would receive a letter in selected language. But not all languages that we can see in a setting already exist for email notifications! If the language exits for UI but not exist for the email notifications then email notifications fail to EN.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[mmattel]

What are the values that can be entered for a language and how to identify which languages are available?

[2403905]

What are the values that can be entered for a language and how to identify which languages are available?

Good catch. I'll add

[mmattel]

The value has the ISO 639-1 format ("de", "en", etc.) and is limited by the list supported languages.

Do we have a fallback if one sets an unsupported language to use the default?
If not, this must be implemented, if yes we should add this behaviour to readme.md.

[mmattel]

Do we have a fallback if one sets an unsupported language to use the default?

I have to ask again, maybe I just cant read code properly, do we catch a language being set not being in the list of supported languages to fallback to the default language?

[mmattel]

Looks good from a docs POV

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
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5.2% Duplication