mail template configuration

[wkloucek]

Description

adds the option to configure mail templates. On the way it adds an example deployment with mailbucket to test mail sending functionality.

Related Issue

• Fixes expose configuration for email templates #317
• Fixes use NOTIFICATIONS_WEB_UI_URL #313
• needs Skip the error if the simulink is pointed to a directory ocis#6574 -> oCIS release for appVersion in Chart.yaml pending

Motivation and Context

allow to change mail templates

How Has This Been Tested?

• with the added example. Please enable branding, see https://github.com/owncloud/ocis-charts/pull/330/files#diff-32a89cb4a3c9b5c7e251253ba98e83e7728bb322c17f701e71724be51dc42fe9R46

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 generated (make docs) and committed
• Documentation ticket raised:
• Documentation PR created:

[wkloucek]

I ran into this:

kubectl -n ocis logs -f deployment/notifications
{"level":"error","service":"notifications","error":"read /etc/ocis/notifications/templates/html/img/..data: is a directory","event":"ShareCreated","time":"2023-06-20T15:09:57.6929667Z","line":"github.com/owncloud/ocis/v2/services/notifications/pkg/service/shares.go:59","message":"could not get render the email"}

Looks like the current implementation doesn't like Kubernetes ConfigMaps, because the template path looks like this when mounting these files as configmap:

kubectl exec -it -n ocis pods/notifications-76bbd45d77-znbf2 -- sh 
~ $ cd /etc/ocis/notifications/
/etc/ocis/notifications $ tree -a
.
└── templates
    ├── html
    │   ├── ..2023_06_20_15_09_09.176225182
    │   │   └── email.html.tmpl
    │   ├── ..data -> ..2023_06_20_15_09_09.176225182
    │   ├── email.html.tmpl -> ..data/email.html.tmpl
    │   └── img
    │       ├── ..2023_06_20_15_09_09.1371932421
    │       │   ├── logo-mail.gif
    │       │   ├── logo-mail.jpeg
    │       │   └── logo-mail.png
    │       ├── ..data -> ..2023_06_20_15_09_09.1371932421
    │       ├── logo-mail.gif -> ..data/logo-mail.gif
    │       ├── logo-mail.jpeg -> ..data/logo-mail.jpeg
    │       └── logo-mail.png -> ..data/logo-mail.png
    └── text
        ├── ..2023_06_20_15_09_09.4107791090
        │   └── email.text.tmpl
        ├── ..data -> ..2023_06_20_15_09_09.4107791090
        └── email.text.tmpl -> ..data/email.text.tmpl

10 directories, 10 files

[d7oc]

LGTM, we might need a new issue for the point I highlight in the comment.

[d7oc]

I think this description needs some more information about the keys we expect in the secret. Not especially related to this PR this was already missing before.

[wkloucek]

Oh, the secret section https://doc.owncloud.com/ocis/next/deployment/container/orchestration/orchestration.html#secrets needs a complete rework since we switched to automatically creating secrets. Tracking issue: #367