Exchange Service

All the exchange rates are represented in the schema below

Field	Type
baseCurrency	Currency Code
tagetCurrency	Currency Code
rate	number
modifiedDate	object { "_seconds": 1716120001, "_nanoseconds": 188000000 }

The Rate

The rate in equations is not actually the price but is a number with unit baseCurrency/targetCurrency and in all calculations this needs to be taken into factor.

Exchange Service calculations

The exchange service calculations are done with the below variables and formulas.

Rounding Numbers

We round all currencies to 2 decimal point except IRT. For IRT we round to 0 decimal points

All rounding operations are done with strategy roundDown