Conversion

The Conversion tool turns item-to-item rates into a calculator for kitchen prep and yield math.

How it works

• A ConversionSet groups rates and templates for one org.
• A ConversionRate is a directed edge from one ToolItem to another.
• The stored rate is toQty / fromQty, so the UI can multiply through a chain of rates.
• The calculator follows connected rates as a graph and keeps a visited set so cycles do not loop forever.

Why it is not a tree

• A tree would imply one parent and one path.
• Conversion rates can connect in multiple directions, so the data behaves like a graph.
• The UI uses graph traversal to find connected items and chained conversions.

Templates

• Templates store the active calculator state for a set.
• The active template is selected from the URL and restored on reload.
• This lets a manager keep different calculations for different recipes or batches.

Why this section exists

• Conversion logic is easier to understand when the rates, templates, and calculator are documented together.
• The UI layer handles selection and form state; the service layer holds the reusable rate logic.