Hreflang Setup - How to use localised URLs?

[JohnMentes]

Hi There,

We have 2 different hreflang setup right now and both are incorrect. 

1st one, which is added in layout/theme.liquid

<link rel="alternate" href="/collections/mens-suede-jackets" hreflang="x-default" />

<link rel="alternate" href="/de/collections/mens-suede-jackets" hreflang="de" />

<link rel="alternate" href="/fr/collections/mens-suede-jackets" hreflang="fr" />

<link rel="alternate" href="/it/collections/mens-suede-jackets" hreflang="it" />

<link rel="alternate" href="/ru/collections/mens-suede-jackets" hreflang="ru" />

This one does not contain the localised URLs. We have URLs in german for "/de/collections/herren-wildleder-jacken" for example.

2nd one, default setup by Shopify

<link rel="alternate" hreflang="x-default" href="/collections/herren-wildleder-jacken">

<link rel="alternate" hreflang="de-CH" href="/de-ch/collections/herren-wildleder-jacken">

<link rel="alternate" hreflang="fr-FR" href="/fr-fr/collections/mens-suede-jackets">

<link rel="alternate" hreflang="ru-RU" href="/ru-ru/collections/%D0%BC%D1%83%D0%B6%D1%81%D0%BA%D0%B8%D0%B5-%D0%B7%D0%B0%D0%BC%D1%88%D0%B5%D0%B2%D...">

<link rel="alternate" hreflang="it-IT" href="/it-it/collections/mens-suede-jackets-it">

<link rel="alternate" hreflang="de-DE" href="/de-de/collections/herren-wildleder-jacken">

<link rel="alternate" hreflang="fr-DE" href="/fr/collections/mens-suede-jackets">

<link rel="alternate" hreflang="ru-DE" href="/ru/collections/%D0%BC%D1%83%D0%B6%D1%81%D0%BA%D0%B8%D0%B5-%D0%B7%D0%B0%D0%BC%D1%88%D0%B5%D0%B2%D1%8...">

<link rel="alternate" hreflang="it-DE" href="/it/collections/mens-suede-jackets-it">

<link rel="alternate" hreflang="en-DE" href="/en/collections/mens-suede-jackets">

This version has localised URLs, however also unnecessary URLs such as /fr-fr/ instead of /fr/ or /de-ch/. We don't need country codes but only the country codes in the hreflang with a localised version.

Ideal scenario is: 

We only have localised URLs for German and Russian right now. That's why they can use local URLs, French and Italian can be in English.

<link rel="alternate" href="/collections/mens-suede-jackets" hreflang="x-default" />

<link rel="alternate" href="/de/collections/herren-wildleder-jacken" hreflang="de" />

<link rel="alternate" href="/fr/collections/mens-suede-jackets" hreflang="fr" />

<link rel="alternate" href="/it/collections/mens-suede-jackets" hreflang="it" />

<link rel="alternate" href="/ru/collections/%D0%BC%D1%83%D0%B6%D1%81%D0%BA%D0%B8%D0%B5-%D0%B7%D0%B0%D0%BC%D1%88%D0%B5%D0%B2%D1%8..." hreflang="ru" />

We are using Transcy for the translations and I think it has an affect on hreflang tags too.
Any idea how the ideal scenario is possible?

Thank you for your time,