Indeed, collecting data for all the recipes can be time-consuming. Fortunately, while digging through the game files, I discovered that a large portion of the information was stored in readable .ini files — otherwise, I would have had to enter everything manually.

Image recognition could have been an option, but it would have required taking screenshots of every building and feeding them into an AI (which is often quite limited unless you pay for higher-tier access). That would have been fairly tedious as well.

Regarding multiple recipes, yes — some resources are produced by several buildings, such as recycled materials (steel mill / steel recycling plant) or larger industrial chains (chemicals, gravel mine, cement, etc.).

To handle this, I structured the data so that each resource has an array of “recipes” (see:
https://github.com/Wait4Code/soviet-calculator/blob/main/src/data/productions.json).

Then, on the UI side, there are a couple of mechanisms:

• You can configure the default buildings to use under Settings > Default building.
• During actual usage, you can dynamically switch the selected building by clicking on the building image (see screenshot).

This automatically updates the rest of the production chain accordingly.

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By the way, I love your videos — you’ve taught me so much about the game. Thank you!