add notification to admin dash if no stats generated yet

[vincanger]

Description

Fixes #344 and removes error being thrown if no stats have been calculated and generated yet by the dailyStatsJob

Contributor Checklist

Make sure to do the following steps if they are applicable to your PR:

• Update e2e tests: If you changed the /template/app, then make sure to do any neccessary updates to /template/e2e-tests also.
• Update demo app: If you changed the /template/app, then make sure to do any neccessary updates to /opensaas-sh/app_diff also. Check /opensaas-sh/README.md for details.
• Update docs: If needed, update the /opensaas-sh/blog/src/content/docs.

[infomiho]

Looking good! Left one comment.

Also, I'd hide the banner below until we have the stats:

[infomiho]

I'd recommend using clsx (and maybe twMerge alongside it) so you can write this more easily:

<div className={cn({
  opacity-25: !stats,
})}>
...
</div>

This enables you to compose styles in an object and then the clsx gives you the final string. It's easier to write and read IMHO.

ShadCN packs it into a cn helper fn:

import { clsx, type ClassValue } from "clsx"
import { twMerge } from "tailwind-merge"

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs))
}

[vincanger]

we actually alread have the cn helper function i just forgot to use it :)

[infomiho]

@vincanger you merged, but did you hide the Stripe test purchases banner?

[vincanger]

@infomiho no I just left it becuase its only for opensaas.sh and for that we have a lot stats data in the db

[infomiho]

@vincanger Makes sense, but it still feels little dirty not to hide it in case we don't have any data. I know we have it, but you know, to make this as nice as possible of an implementation :)

[vincanger]

ok I fixed it and pushed to main