shopware VS Spree Commerce

$asset-path has been deprecated. Use $app-css-relative-asset-path instead, which is relative to the app.css that points to the asset folder. As a side effect, the fonts are now loaded from the theme folder instead of the bundle asset folder. This should work out of the box, because all assets of the theme are also copied into the theme folder. (UPGRADE-6.4.md)

A look at the shopware platform code maybe helps.

Intrigued to know what is ahead? Take a look: https://github.com/shopware/platform/tree/trunk

A good system to study is Spree https://github.com/spree/spree. It has an inventory and billing system and supports different adjustments and sale configurations. If you don't want to use it wholesale it's a solid Rails application that does most of what you want so you can use it as solid inspiration.

Spree Commerce: https://spreecommerce.org/

Maybe Spree?

I'd say Solidus and Spree are you best options rather than trying to roll out you own ecommerce solution.

When I was working on that company, that mobile ordering app, Counterless, I looked a lot at codebases like Spree, the Spree Commerce codebase. And that's how I learned a lot about how do you model an order with line items and things like that? I saw some amazing things that helped me develop an understanding and save a ton of time by looking at oh, they have a state machine. What are the ways that an order transitions through all these different states as it gets processed and charged? And how do you track all of those things?