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39 lines
1.3 KiB
39 lines
1.3 KiB
import { CaveatMutatorOperation } from '@metamask/snap-controllers';
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import { CaveatTypes } from '../../../../shared/constants/permissions';
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/**
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* Factories that construct caveat mutator functions that are passed to
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* PermissionController.updatePermissionsByCaveat.
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*/
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export const CaveatMutatorFactories = {
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[CaveatTypes.restrictReturnedAccounts]: {
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removeAccount,
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},
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};
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/**
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* Removes the target account from the value arrays of all
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* `restrictReturnedAccounts` caveats. No-ops if the target account is not in
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* the array, and revokes the parent permission if it's the only account in
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* the array.
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*
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* @param {string} targetAccount - The address of the account to remove from
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* all accounts permissions.
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* @param {string[]} existingAccounts - The account address array from the
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* account permissions.
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*/
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function removeAccount(targetAccount, existingAccounts) {
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const newAccounts = existingAccounts.filter(
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(address) => address !== targetAccount,
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);
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if (newAccounts.length === existingAccounts.length) {
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return { operation: CaveatMutatorOperation.noop };
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} else if (newAccounts.length > 0) {
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return {
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operation: CaveatMutatorOperation.updateValue,
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value: newAccounts,
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};
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}
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return { operation: CaveatMutatorOperation.revokePermission };
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}
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