[Sitemap] Support dynamic i18n route keywords

[Bombastickj]

Describe the bug

Hi,

I've been attempting to create a correctly translated sitemap in Nuxt 3 using the @nuxt/sitemap module, but I'm facing some difficulties with dynamic routes. Below is the summary of my discussion with @harlan-zw:

Issue Summary

• Base URL Configuration: Encountering issues while translating dynamically generated entries using i18n with differentDomains (missing home page URL).
• Static and Dynamic Routes: While static routes are correctly inferred in the sitemap, dynamically generated routes are not.
• Multi-Sitemap: Dynamically generated routes are not correctly inferred / hreflangs are not filled and remain zero.

Reproductions

1. Initial Setup:
   Minimal Reproduction Example
   Expected behavior: Three entries in each translated sitemap.

2. Missing Homepage / Incorrectly Inferred Dynamic Routes:
   Minimal Reproduction Example

3. Multi-Sitemap Configuration:
   Multi-Sitemap Example
   Issue: hreflangs remain zero.

4. Using defineI18nRoute:
   Example with defineI18nRoute
   Issue: Dynamic routes still don't get translated properly.

Request

Could you please investigate the support for translating dynamically generated i18n routes in the @nuxt/sitemap module?

Additional Information

For the time being, I'm using defineI18nRoute with partial success but still facing issues with dynamic routes. Any suggestions or potential fixes would be highly appreciated.

Thank you for your assistance and looking forward to a resolution!

Best regards,
Jonas

Reproduction

https://stackblitz.com/edit/nuxt-starter-nc3hjd?file=nuxt.config.ts

System / Nuxt Info

No response

[harlan-zw]

Needs to support Nuxt I18n path matching with the Nuxt pages features:

• Dynamic Routes (https://nuxt.com/docs/guide/directory-structure/pages#dynamic-routes)

-| pages/
---| index.vue
---| users-[group]/
-----| [id].vue

• Route Groups (https://nuxt.com/docs/guide/directory-structure/pages#route-groups)

-| pages/
---| index.vue
---| (marketing)/
-----| about.vue
-----| contact.vue

I18n reference: https://i18n.nuxtjs.org/docs/guide/custom-paths#example-3-dynamic-routes

[harlan-zw]

Just a small update on this, I did start investigating and was confirmed in my suspicious that it was going to be quite painful. So will need to try again when I have a good time to sit down with it.