Pantry info endpoint (backend & frontend)

[hellolol2016]

Note: We may not want to merge this PR until the ESLint crash triggered by the changes to apiClient.ts is fixed. Otherwise, all future commits and pushes on branches that include the changes from this branch will fail the pre-commit/pre-push hooks. (The --no-verify option was used to bypass these hooks for the last 2 commits on this branch, as the new API client function should not cause a linter crash.)

ℹ️ Issue
Closes https://trello.com/c/U1mRqCo7

📝 Description

• Added pantries API endpoint to retrieve information about a pantry from its ID
  • Response is 404 Not Found if the pantry ID does not exist in the database
  • Added utils functions to make it easier for controller endpoint functions to throw an exception/return an error response code when a service function returns null or undefined
• Used this endpoint in the frontend to show pantry info on the pantry-overview page, based on the pantry ID in the URL

✔️ Verification
Confirmed that Swagger contains the api endpoint:

Verified the endpoint with an existing pantry ID:

Verified the endpoint with a non-existing pantry ID:

[fanzzz368]

we can do @manytoone(() => User) @joincolumn({ name: 'ssf_representative_id' }) here instead of column

[fanzzz368]

and @manytoone(() => User) @joincolumn({ name: 'pantry_representative_id' }) here instead

[hellolol2016]

hey fanny, I implemented what you suggested in my latest commit, could you explain a little bit more what this does?

[fanzzz368]

Hi Dennis, "@manytoone" helps indicate a many-to-one relationship between the Pantry and User tables (meaning that each pantry can only have one user as its SSF representative or pantry representative, but a user can be the representative for multiple pantries). The "(() => User)" explicitly states that the many-to-one relationship is with the User entity, which is better for type checking and indicates that pantry_representative_id / ssf_representative_id foreign key columns in pantry refer to the user table. The "@joincolumn" specifies the columns in the pantry table that store the foreign keys linking to the user table.

[fanzzz368]

looks good to me

[fanzzz368]

lgtm