import { StrKey } from './strkey';
import { scValToNative } from './scval';
/**
* Converts raw diagnostic or contract events into something with a flatter,
* human-readable, and understandable structure.
*
* @param {xdr.DiagnosticEvent[] | xdr.ContractEvent[]} events either contract
* events or diagnostic events to parse into a friendly format
*
* @returns {SorobanEvent[]} a list of human-readable event structures, where
* each element has the following properties:
* - type: a string of one of 'system', 'contract', 'diagnostic
* - contractId?: optionally, a `C...` encoded strkey
* - topics: a list of {@link scValToNative} invocations on the topics
* - data: similarly, a {@link scValToNative} invocation on the raw event data
*/
export function humanizeEvents(events) {
return events.map((e) => {
// A pseudo-instanceof check for xdr.DiagnosticEvent more reliable
// in mixed SDK environments:
if (e.inSuccessfulContractCall) {
return extractEvent(e.event());
}
return extractEvent(e);
});
}
function extractEvent(event) {
return {
...(typeof event.contractId === 'function' &&
event.contractId() != null && {
contractId: StrKey.encodeContract(event.contractId())
}),
type: event.type().name,
topics: event
.body()
.value()
.topics()
.map((t) => scValToNative(t)),
data: scValToNative(event.body().value().data())
};
}
Source