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multichain.ts
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multichain.ts
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import {
PermissionConstraint,
SubjectPermissions,
} from '@metamask/permission-controller';
import { fromEntries, getSnapSourceShasum } from '@metamask/snaps-utils';
import {
MOCK_ORIGIN,
MOCK_SNAP_ID,
getSnapManifest,
getPersistedSnapObject,
} from '@metamask/snaps-utils/test-utils';
import { assert } from '@metamask/utils';
import { SnapEndowments } from '..';
import { MultiChainController } from '../multichain';
import {
getControllerMessenger,
getSnapController,
getSnapControllerMessenger,
getSnapControllerOptions,
getSnapControllerWithEES,
getSnapControllerWithEESOptions,
} from './controller';
export const MOCK_EIP155_NAMESPACE = {
methods: [
'eth_signTransaction',
'eth_accounts',
'eth_sign',
'personal_sign',
'eth_signTypedData',
],
events: ['accountsChanged'],
chains: [
{
id: 'eip155:1',
name: 'Ethereum (Mainnet)',
},
],
};
export const MOCK_BIP122_NAMESPACE = {
methods: ['signPBST', 'getExtendedPublicKey'],
chains: [
{
id: 'bip122:000000000019d6689c085ae165831e93',
name: 'Bitcoin (Mainnet)',
},
{
id: 'bip122:000000000933ea01ad0ee984209779ba',
name: 'Bitcoin (Testnet)',
},
],
};
export const MOCK_NAMESPACES = {
eip155: MOCK_EIP155_NAMESPACE,
bip122: MOCK_BIP122_NAMESPACE,
};
export const MOCK_EIP155_NAMESPACE_REQUEST = {
...MOCK_EIP155_NAMESPACE,
chains: ['eip155:1'],
};
export const MOCK_BIP122_NAMESPACE_REQUEST = {
...MOCK_BIP122_NAMESPACE,
chains: [
'bip122:000000000019d6689c085ae165831e93',
'bip122:000000000933ea01ad0ee984209779ba',
],
};
export const MOCK_NAMESPACES_REQUEST = {
eip155: MOCK_EIP155_NAMESPACE_REQUEST,
bip122: MOCK_BIP122_NAMESPACE_REQUEST,
};
export const MOCK_CONNECT_ARGUMENTS = {
requiredNamespaces: MOCK_NAMESPACES_REQUEST,
};
export const MOCK_KEYRING_BUNDLE = `
class Keyring {
async getAccounts() {
return ['eip155:1:foo'];
}
async handleRequest({request}) {
switch(request.method){
case 'eth_accounts':
return this.getAccounts();
}
}
}
module.exports.keyring = new Keyring();`;
export const PERSISTED_MOCK_KEYRING_SNAP = getPersistedSnapObject({
id: MOCK_SNAP_ID,
sourceCode: MOCK_KEYRING_BUNDLE,
manifest: getSnapManifest({
shasum: getSnapSourceShasum(MOCK_KEYRING_BUNDLE),
initialPermissions: {
[SnapEndowments.Keyring]: {
namespaces: MOCK_NAMESPACES,
},
},
}),
});
export const MOCK_KEYRING_PERMISSION: PermissionConstraint = {
caveats: [{ type: 'snapKeyring', value: { namespaces: MOCK_NAMESPACES } }],
date: 1664187844588,
id: 'izn0WGUO8cvq_jqvLQuQP',
invoker: MOCK_ORIGIN,
parentCapability: SnapEndowments.Keyring,
};
export const getMultiChainControllerMessenger = (
messenger: ReturnType<
typeof getControllerMessenger
> = getControllerMessenger(),
) => {
return messenger.getRestricted({
name: 'MultiChainController',
allowedActions: [
'PermissionController:getPermissions',
'PermissionController:hasPermission',
'PermissionController:grantPermissions',
'ApprovalController:addRequest',
'SnapController:getAll',
'SnapController:handleRequest',
'SnapController:incrementActiveReferences',
'SnapController:decrementActiveReferences',
],
});
};
export const getMultiChainController = () => {
const rootMessenger = getControllerMessenger();
const snapControllerMessenger = getSnapControllerMessenger(rootMessenger);
const snapController = getSnapController(
getSnapControllerOptions({ messenger: snapControllerMessenger }),
);
const multiChainControllerMessenger =
getMultiChainControllerMessenger(rootMessenger);
const multiChainController = new MultiChainController({
messenger: multiChainControllerMessenger,
notify: jest.fn(),
});
return {
rootMessenger,
multiChainControllerMessenger,
multiChainController,
snapController,
snapControllerMessenger,
};
};
export const getMultiChainControllerWithEES = (
options = {
snapControllerOptions: getSnapControllerWithEESOptions(),
},
) => {
const { snapControllerOptions } = options;
const { rootMessenger } = snapControllerOptions;
rootMessenger.registerActionHandler(
'PermissionController:getPermissions',
(permissionName): SubjectPermissions<PermissionConstraint> => {
if (permissionName === MOCK_SNAP_ID) {
return { [SnapEndowments.Keyring]: MOCK_KEYRING_PERMISSION };
}
return {};
},
);
rootMessenger.registerActionHandler(
'ApprovalController:addRequest',
async ({ type, requestData }) => {
if (type === 'multichain_connect') {
assert(requestData?.possibleAccounts);
return Promise.resolve(
fromEntries(
Object.entries(requestData.possibleAccounts).map(
([namespace, snapAndAccounts]) => [
namespace,
(snapAndAccounts as string[])[0] ?? null,
],
),
),
);
}
return Promise.resolve({});
},
);
const [snapController, executionService] = getSnapControllerWithEES(
snapControllerOptions,
);
const multiChainControllerMessenger =
getMultiChainControllerMessenger(rootMessenger);
const multiChainController = new MultiChainController({
messenger: multiChainControllerMessenger,
notify: jest.fn(),
});
return {
rootMessenger,
multiChainControllerMessenger,
multiChainController,
snapController,
snapControllerMessenger: snapControllerOptions.messenger,
executionService,
};
};