Add patch and delete endpoints

[jzbahrai]

Summary | Résumé

Added patch and delete endpoints for Templates

Related Issues | Cartes liées

• https://app.zenhub.com/workspaces/notify-planning-614b3ad91bc2030015ed22f5/issues/gh/cds-snc/notification-planning/3139

Test instructions | Instructions pour tester la modification

1. Create a new template:

POST http://localhost:6011/v2/manage-template
{"name": "Welcome email1",
 "template_type": "email",
 "subject": "Welcome to  notify 3",
 "content": "Hi ((first_name)), welcome!", 
 "template_category_id": "7c16aa95-e2e1-4497-81d6-04c656520fe4"
}

2. Patch the above Template

PATCH http://localhost:6011/v2/manage-template/<template_id_from_above>
{"name": "Welcome email1",
 "template_type": "email",
 "subject": "Welcome to  notify 3",
 "content": "Hi ((first_name)), welcome!", 
 "template_category_id": "7c16aa95-e2e1-4497-81d6-04c656520fe4"
}

^ Ifyou posted the above with template_type, you will get an error
Remove the template_type and when you send the PATCH, you should see the version gets updated

3. Delete the above template
4. Check admin to see that the template doesn't exist

[Copilot]

Pull request overview

Adds missing PATCH and DELETE endpoints to the existing /v2/manage-template/<template_id> API so callers can update template fields and archive templates, aligning v2 manage-template functionality with expected template lifecycle operations.

Changes:

• Added /v2/manage-template/<template_id> PATCH endpoint with request schema validation and support for updating name/content/subject/category/folder.
• Added /v2/manage-template/<template_id> DELETE endpoint that archives templates and returns the serialized template.
• Added unit tests covering success and common failure cases for both endpoints.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tests/app/v2/manage_template/test_patch_template.py	New tests for PATCH manage-template endpoint (update and error paths).
tests/app/v2/manage_template/test_delete_template.py	New tests for DELETE manage-template endpoint (archive and error paths).
app/v2/manage_template/template_schemas.py	Adds PATCH request schema for manage-template updates.
app/v2/manage_template/patch_template.py	Implements PATCH endpoint logic and validation.
app/v2/manage_template/delete_template.py	Implements DELETE endpoint to archive templates.
app/init.py	Registers the new manage-template modules so routes are loaded.

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[whabanks]

LGTM, tested locally and it's working as expected. Just one comment around folders.

[whabanks]

Do we want to mirror existing behaviour on the admin endpoints and detach the archived templates from folders?

[whabanks]

LGTM