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Clean unlimited balances simulation #165

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merged 2 commits into from
Nov 14, 2024
Merged

Clean unlimited balances simulation #165

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0eb4783
feat(simulation-state): clean up unlimited balance result
oumar-fall Nov 14, 2024
0de4fe3
Merge branch 'next' into feat/simulate-unlimited-balances
oumar-fall Nov 14, 2024
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29 changes: 21 additions & 8 deletions packages/simulation-sdk/src/SimulationState.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ import {
} from "./errors.js";
import {
type MaybeDraft,
type SimulationResult,
produceImmutable,
simulateOperation,
simulateOperations,
Expand Down Expand Up @@ -659,20 +660,20 @@ export class SimulationState implements InputSimulationState {
operations: Operation[],
holders: Address[],
) {
const virtualBundlerData = produceImmutable(this, (draft) => {
const virtualHoldersData = produceImmutable(this, (draft) => {
holders
.flatMap((holder) => Object.values(draft.holdings[holder] ?? {}))
.forEach((bundlerTokenData) => {
.forEach((holderTokenData) => {
// Virtual balance to calculate the amount required.
bundlerTokenData.balance += MathLib.MAX_UINT_160;
holderTokenData.balance += MathLib.MAX_UINT_160;
});
});

const steps = simulateOperations(operations, virtualBundlerData);
const steps = simulateOperations(operations, virtualHoldersData);

const bundlerTokenDiffs = holders
const holdersTokenDiffs = holders
.flatMap((holder) =>
keys(virtualBundlerData.holdings[holder]).map(
keys(virtualHoldersData.holdings[holder]).map(
(token) => [holder, token] as const,
),
)
Expand Down Expand Up @@ -700,10 +701,22 @@ export class SimulationState implements InputSimulationState {
}));

return {
requiredTokenAmounts: bundlerTokenDiffs.filter(
requiredTokenAmounts: holdersTokenDiffs.filter(
({ required }) => required > 0n,
),
steps,
steps: steps.map((step) =>
produceImmutable(step, (draft) =>
holders
.flatMap((holder) => Object.values(draft.holdings[holder] ?? {}))
.forEach((holderTokenData) => {
// Change virtual balance back to real value
holderTokenData.balance = MathLib.max(
0n,
holderTokenData.balance - MathLib.MAX_UINT_160,
);
}),
),
) as SimulationResult,
};
}
}