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metamask-extension/app/scripts/controllers/preferences.js

956 lines
30 KiB
JavaScript

import { strict as assert } from 'assert';
import { ObservableStore } from '@metamask/obs-store';
import { ethErrors } from 'eth-rpc-errors';
import { normalize as normalizeAddress } from 'eth-sig-util';
import { ethers } from 'ethers';
import log from 'loglevel';
import abiERC721 from 'human-standard-collectible-abi';
import contractsMap from '@metamask/contract-metadata';
import { LISTED_CONTRACT_ADDRESSES } from '../../../shared/constants/tokens';
import { NETWORK_TYPE_TO_ID_MAP } from '../../../shared/constants/network';
import { isPrefixedFormattedHexString } from '../../../shared/modules/network.utils';
import {
isValidHexAddress,
toChecksumHexAddress,
} from '../../../shared/modules/hexstring-utils';
import { NETWORK_EVENTS } from './network';
const ERC721_INTERFACE_ID = '0x80ac58cd';
export default class PreferencesController {
/**
*
* @typedef {Object} PreferencesController
* @param {Object} opts - Overrides the defaults for the initial state of this.store
* @property {Object} store The stored object containing a users preferences, stored in local storage
* @property {Array} store.frequentRpcList A list of custom rpcs to provide the user
* @property {Array} store.tokens The tokens the user wants display in their token lists
* @property {Object} store.accountTokens The tokens stored per account and then per network type
* @property {Object} store.assetImages Contains assets objects related to assets added
* @property {boolean} store.useBlockie The users preference for blockie identicons within the UI
* @property {boolean} store.useNonceField The users preference for nonce field within the UI
* @property {Object} store.featureFlags A key-boolean map, where keys refer to features and booleans to whether the
* user wishes to see that feature.
*
* Feature flags can be set by the global function `setPreference(feature, enabled)`, and so should not expose any sensitive behavior.
* @property {Object} store.knownMethodData Contains all data methods known by the user
* @property {string} store.currentLocale The preferred language locale key
* @property {string} store.selectedAddress A hex string that matches the currently selected address in the app
*
*/
constructor(opts = {}) {
const initState = {
frequentRpcListDetail: [],
accountTokens: {},
accountHiddenTokens: {},
assetImages: {},
tokens: [],
hiddenTokens: [],
suggestedTokens: {},
useBlockie: false,
useNonceField: false,
usePhishDetect: true,
dismissSeedBackUpReminder: false,
useStaticTokenList: false,
// WARNING: Do not use feature flags for security-sensitive things.
// Feature flag toggling is available in the global namespace
// for convenient testing of pre-release features, and should never
// perform sensitive operations.
featureFlags: {
showIncomingTransactions: true,
},
knownMethodData: {},
firstTimeFlowType: null,
currentLocale: opts.initLangCode,
identities: {},
lostIdentities: {},
forgottenPassword: false,
preferences: {
autoLockTimeLimit: undefined,
showFiatInTestnets: false,
useNativeCurrencyAsPrimaryCurrency: true,
hideZeroBalanceTokens: false,
},
completedOnboarding: false,
// ENS decentralized website resolution
ipfsGateway: 'dweb.link',
infuraBlocked: null,
useLedgerLive: false,
...opts.initState,
};
this.network = opts.network;
this.ethersProvider = new ethers.providers.Web3Provider(opts.provider);
this.store = new ObservableStore(initState);
this.store.setMaxListeners(12);
this.openPopup = opts.openPopup;
this.migrateAddressBookState = opts.migrateAddressBookState;
this.network.on(NETWORK_EVENTS.NETWORK_DID_CHANGE, () => {
const { tokens, hiddenTokens } = this._getTokenRelatedStates();
this.ethersProvider = new ethers.providers.Web3Provider(opts.provider);
this._updateAccountTokens(tokens, this.getAssetImages(), hiddenTokens);
});
this._subscribeToInfuraAvailability();
global.setPreference = (key, value) => {
return this.setFeatureFlag(key, value);
};
}
// PUBLIC METHODS
/**
* Sets the {@code forgottenPassword} state property
* @param {boolean} forgottenPassword - whether or not the user has forgotten their password
*/
setPasswordForgotten(forgottenPassword) {
this.store.updateState({ forgottenPassword });
}
/**
* Setter for the `useBlockie` property
*
* @param {boolean} val - Whether or not the user prefers blockie indicators
*
*/
setUseBlockie(val) {
this.store.updateState({ useBlockie: val });
}
/**
* Setter for the `useNonceField` property
*
* @param {boolean} val - Whether or not the user prefers to set nonce
*
*/
setUseNonceField(val) {
this.store.updateState({ useNonceField: val });
}
/**
* Setter for the `usePhishDetect` property
*
* @param {boolean} val - Whether or not the user prefers phishing domain protection
*
*/
setUsePhishDetect(val) {
this.store.updateState({ usePhishDetect: val });
}
/**
* Setter for the `useStaticTokenList` property
*
* @param {boolean} val - Whether or not the user prefers to use the static token list or dynamic token list from the API
*
*/
setUseStaticTokenList(val) {
this.store.updateState({ useStaticTokenList: val });
}
/**
* Setter for the `firstTimeFlowType` property
*
* @param {string} type - Indicates the type of first time flow - create or import - the user wishes to follow
*
*/
setFirstTimeFlowType(type) {
this.store.updateState({ firstTimeFlowType: type });
}
getSuggestedTokens() {
return this.store.getState().suggestedTokens;
}
getAssetImages() {
return this.store.getState().assetImages;
}
/**
* Add new methodData to state, to avoid requesting this information again through Infura
*
* @param {string} fourBytePrefix - Four-byte method signature
* @param {string} methodData - Corresponding data method
*/
addKnownMethodData(fourBytePrefix, methodData) {
const { knownMethodData } = this.store.getState();
knownMethodData[fourBytePrefix] = methodData;
this.store.updateState({ knownMethodData });
}
/**
* wallet_watchAsset request handler.
*
* @param {Object} req - The watchAsset JSON-RPC request object.
*/
async requestWatchAsset(req) {
const { type, options } = req.params;
switch (type) {
case 'ERC20':
return await this._handleWatchAssetERC20(options);
default:
throw ethErrors.rpc.invalidParams(
`Asset of type "${type}" not supported.`,
);
}
}
/**
* Setter for the `currentLocale` property
*
* @param {string} key - he preferred language locale key
*
*/
setCurrentLocale(key) {
const textDirection = ['ar', 'dv', 'fa', 'he', 'ku'].includes(key)
? 'rtl'
: 'auto';
this.store.updateState({
currentLocale: key,
textDirection,
});
return textDirection;
}
/**
* Updates identities to only include specified addresses. Removes identities
* not included in addresses array
*
* @param {string[]} addresses - An array of hex addresses
*
*/
setAddresses(addresses) {
const oldIdentities = this.store.getState().identities;
const oldAccountTokens = this.store.getState().accountTokens;
const oldAccountHiddenTokens = this.store.getState().accountHiddenTokens;
const identities = addresses.reduce((ids, address, index) => {
const oldId = oldIdentities[address] || {};
ids[address] = { name: `Account ${index + 1}`, address, ...oldId };
return ids;
}, {});
const accountTokens = addresses.reduce((tokens, address) => {
const oldTokens = oldAccountTokens[address] || {};
tokens[address] = oldTokens;
return tokens;
}, {});
const accountHiddenTokens = addresses.reduce((hiddenTokens, address) => {
const oldHiddenTokens = oldAccountHiddenTokens[address] || {};
hiddenTokens[address] = oldHiddenTokens;
return hiddenTokens;
}, {});
this.store.updateState({ identities, accountTokens, accountHiddenTokens });
}
/**
* Removes an address from state
*
* @param {string} address - A hex address
* @returns {string} the address that was removed
*/
removeAddress(address) {
const {
identities,
accountTokens,
accountHiddenTokens,
} = this.store.getState();
if (!identities[address]) {
throw new Error(`${address} can't be deleted cause it was not found`);
}
delete identities[address];
delete accountTokens[address];
delete accountHiddenTokens[address];
this.store.updateState({ identities, accountTokens, accountHiddenTokens });
// If the selected account is no longer valid,
// select an arbitrary other account:
if (address === this.getSelectedAddress()) {
const selected = Object.keys(identities)[0];
this.setSelectedAddress(selected);
}
return address;
}
/**
* Adds addresses to the identities object without removing identities
*
* @param {string[]} addresses - An array of hex addresses
*
*/
addAddresses(addresses) {
const {
identities,
accountTokens,
accountHiddenTokens,
} = this.store.getState();
addresses.forEach((address) => {
// skip if already exists
if (identities[address]) {
return;
}
// add missing identity
const identityCount = Object.keys(identities).length;
accountTokens[address] = {};
accountHiddenTokens[address] = {};
identities[address] = { name: `Account ${identityCount + 1}`, address };
});
this.store.updateState({ identities, accountTokens, accountHiddenTokens });
}
/**
* Synchronizes identity entries with known accounts.
* Removes any unknown identities, and returns the resulting selected address.
*
* @param {Array<string>} addresses - known to the vault.
* @returns {Promise<string>} selectedAddress the selected address.
*/
syncAddresses(addresses) {
if (!Array.isArray(addresses) || addresses.length === 0) {
throw new Error('Expected non-empty array of addresses. Error #11201');
}
const { identities, lostIdentities } = this.store.getState();
const newlyLost = {};
Object.keys(identities).forEach((identity) => {
if (!addresses.includes(identity)) {
newlyLost[identity] = identities[identity];
delete identities[identity];
}
});
// Identities are no longer present.
if (Object.keys(newlyLost).length > 0) {
// store lost accounts
Object.keys(newlyLost).forEach((key) => {
lostIdentities[key] = newlyLost[key];
});
}
this.store.updateState({ identities, lostIdentities });
this.addAddresses(addresses);
// If the selected account is no longer valid,
// select an arbitrary other account:
let selected = this.getSelectedAddress();
if (!addresses.includes(selected)) {
selected = addresses[0];
this.setSelectedAddress(selected);
}
return selected;
}
removeSuggestedTokens() {
return new Promise((resolve) => {
this.store.updateState({ suggestedTokens: {} });
resolve({});
});
}
/**
* Setter for the `selectedAddress` property
*
* @param {string} _address - A new hex address for an account
* @returns {Promise<void>} Promise resolves with tokens
*
*/
setSelectedAddress(_address) {
const address = normalizeAddress(_address);
this._updateTokens(address);
const { identities, tokens } = this.store.getState();
const selectedIdentity = identities[address];
if (!selectedIdentity) {
throw new Error(`Identity for '${address} not found`);
}
selectedIdentity.lastSelected = Date.now();
this.store.updateState({ identities, selectedAddress: address });
return Promise.resolve(tokens);
}
/**
* Getter for the `selectedAddress` property
*
* @returns {string} The hex address for the currently selected account
*
*/
getSelectedAddress() {
return this.store.getState().selectedAddress;
}
/**
* Contains data about tokens users add to their account.
* @typedef {Object} AddedToken
* @property {string} address - The hex address for the token contract. Will be all lower cased and hex-prefixed.
* @property {string} symbol - The symbol of the token, usually 3 or 4 capitalized letters
* {@link https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md#symbol}
* @property {boolean} decimals - The number of decimals the token uses.
* {@link https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md#decimals}
*/
/**
* Adds a new token to the token array and removes it from the hiddenToken array, or updates the token if passed an address that already exists.
* Modifies the existing tokens array from the store. All objects in the tokens array array AddedToken objects.
* @see AddedToken {@link AddedToken}
*
* @param {string} rawAddress - Hex address of the token contract. May or may not be a checksum address.
* @param {string} symbol - The symbol of the token
* @param {number} decimals - The number of decimals the token uses.
* @returns {Promise<array>} Promises the new array of AddedToken objects.
*
*/
async addToken(rawAddress, symbol, decimals, image) {
const address = normalizeAddress(rawAddress);
const newEntry = { address, symbol, decimals: Number(decimals) };
const { tokens, hiddenTokens } = this.store.getState();
const assetImages = this.getAssetImages();
const updatedHiddenTokens = hiddenTokens.filter(
(tokenAddress) => tokenAddress !== rawAddress.toLowerCase(),
);
const previousEntry = tokens.find((token) => {
return token.address === address;
});
const previousIndex = tokens.indexOf(previousEntry);
newEntry.isERC721 = await this._detectIsERC721(newEntry.address);
if (previousEntry) {
tokens[previousIndex] = newEntry;
} else {
tokens.push(newEntry);
}
assetImages[address] = image;
this._updateAccountTokens(tokens, assetImages, updatedHiddenTokens);
return Promise.resolve(tokens);
}
/**
* Adds isERC721 field to token object
* (Called when a user attempts to add tokens that were previously added which do not yet had isERC721 field)
*
* @param {string} tokenAddress - The contract address of the token requiring the isERC721 field added.
* @returns {Promise<object>} The new token object with the added isERC721 field.
*
*/
async updateTokenType(tokenAddress) {
const { tokens } = this.store.getState();
const tokenIndex = tokens.findIndex((token) => {
return token.address === tokenAddress;
});
tokens[tokenIndex].isERC721 = await this._detectIsERC721(tokenAddress);
this.store.updateState({ tokens });
return Promise.resolve(tokens[tokenIndex]);
}
/**
* Removes a specified token from the tokens array and adds it to hiddenTokens array
*
* @param {string} rawAddress - Hex address of the token contract to remove.
* @returns {Promise<array>} The new array of AddedToken objects
*
*/
removeToken(rawAddress) {
const { tokens, hiddenTokens } = this.store.getState();
const assetImages = this.getAssetImages();
const updatedTokens = tokens.filter(
(token) => token.address !== rawAddress,
);
const updatedHiddenTokens = [...hiddenTokens, rawAddress.toLowerCase()];
delete assetImages[rawAddress];
this._updateAccountTokens(updatedTokens, assetImages, updatedHiddenTokens);
return Promise.resolve(updatedTokens);
}
/**
* A getter for the `tokens` property
*
* @returns {Array} The current array of AddedToken objects
*
*/
getTokens() {
return this.store.getState().tokens;
}
/**
* Sets a custom label for an account
* @param {string} account - the account to set a label for
* @param {string} label - the custom label for the account
* @returns {Promise<string>}
*/
setAccountLabel(account, label) {
if (!account) {
throw new Error(
`setAccountLabel requires a valid address, got ${String(account)}`,
);
}
const address = normalizeAddress(account);
const { identities } = this.store.getState();
identities[address] = identities[address] || {};
identities[address].name = label;
this.store.updateState({ identities });
return Promise.resolve(label);
}
/**
* updates custom RPC details
*
* @param {Object} newRpcDetails - Options bag.
* @param {string} newRpcDetails.rpcUrl - The RPC url to add to frequentRpcList.
* @param {string} newRpcDetails.chainId - The chainId of the selected network.
* @param {string} [newRpcDetails.ticker] - Optional ticker symbol of the selected network.
* @param {string} [newRpcDetails.nickname] - Optional nickname of the selected network.
* @param {Object} [newRpcDetails.rpcPrefs] - Optional RPC preferences, such as the block explorer URL
*
*/
async updateRpc(newRpcDetails) {
const rpcList = this.getFrequentRpcListDetail();
const index = rpcList.findIndex((element) => {
return element.rpcUrl === newRpcDetails.rpcUrl;
});
if (index > -1) {
const rpcDetail = rpcList[index];
const updatedRpc = { ...rpcDetail, ...newRpcDetails };
if (rpcDetail.chainId !== updatedRpc.chainId) {
// When the chainId is changed, associated address book entries should
// also be migrated. The address book entries are keyed by the `network` state,
// which for custom networks is the chainId with a fallback to the networkId
// if the chainId is not set.
let addressBookKey = rpcDetail.chainId;
if (!addressBookKey) {
// We need to find the networkId to determine what these addresses were keyed by
try {
addressBookKey = await this.ethersProvider.send('net_version');
assert(typeof addressBookKey === 'string');
} catch (error) {
log.debug(error);
log.warn(
`Failed to get networkId from ${rpcDetail.rpcUrl}; skipping address book migration`,
);
}
}
// There is an edge case where two separate RPC endpoints are keyed by the same
// value. In this case, the contact book entries are duplicated so that they remain
// on both networks, since we don't know which network each contact is intended for.
let duplicate = false;
const builtInProviderNetworkIds = Object.values(
NETWORK_TYPE_TO_ID_MAP,
).map((ids) => ids.networkId);
const otherRpcEntries = rpcList.filter(
(entry) => entry.rpcUrl !== newRpcDetails.rpcUrl,
);
if (
builtInProviderNetworkIds.includes(addressBookKey) ||
otherRpcEntries.some((entry) => entry.chainId === addressBookKey)
) {
duplicate = true;
}
this.migrateAddressBookState(
addressBookKey,
updatedRpc.chainId,
duplicate,
);
}
rpcList[index] = updatedRpc;
this.store.updateState({ frequentRpcListDetail: rpcList });
} else {
const {
rpcUrl,
chainId,
ticker,
nickname,
rpcPrefs = {},
} = newRpcDetails;
this.addToFrequentRpcList(rpcUrl, chainId, ticker, nickname, rpcPrefs);
}
}
/**
* Adds custom RPC url to state.
*
* @param {string} rpcUrl - The RPC url to add to frequentRpcList.
* @param {string} chainId - The chainId of the selected network.
* @param {string} [ticker] - Ticker symbol of the selected network.
* @param {string} [nickname] - Nickname of the selected network.
* @param {Object} [rpcPrefs] - Optional RPC preferences, such as the block explorer URL
*
*/
addToFrequentRpcList(
rpcUrl,
chainId,
ticker = 'ETH',
nickname = '',
rpcPrefs = {},
) {
const rpcList = this.getFrequentRpcListDetail();
const index = rpcList.findIndex((element) => {
return element.rpcUrl === rpcUrl;
});
if (index !== -1) {
rpcList.splice(index, 1);
}
if (!isPrefixedFormattedHexString(chainId)) {
throw new Error(`Invalid chainId: "${chainId}"`);
}
rpcList.push({ rpcUrl, chainId, ticker, nickname, rpcPrefs });
this.store.updateState({ frequentRpcListDetail: rpcList });
}
/**
* Removes custom RPC url from state.
*
* @param {string} url - The RPC url to remove from frequentRpcList.
* @returns {Promise<array>} Promise resolving to updated frequentRpcList.
*
*/
removeFromFrequentRpcList(url) {
const rpcList = this.getFrequentRpcListDetail();
const index = rpcList.findIndex((element) => {
return element.rpcUrl === url;
});
if (index !== -1) {
rpcList.splice(index, 1);
}
this.store.updateState({ frequentRpcListDetail: rpcList });
return Promise.resolve(rpcList);
}
/**
* Getter for the `frequentRpcListDetail` property.
*
* @returns {array<array>} An array of rpc urls.
*
*/
getFrequentRpcListDetail() {
return this.store.getState().frequentRpcListDetail;
}
/**
* Updates the `featureFlags` property, which is an object. One property within that object will be set to a boolean.
*
* @param {string} feature - A key that corresponds to a UI feature.
* @param {boolean} activated - Indicates whether or not the UI feature should be displayed
* @returns {Promise<object>} Promises a new object; the updated featureFlags object.
*
*/
setFeatureFlag(feature, activated) {
const currentFeatureFlags = this.store.getState().featureFlags;
const updatedFeatureFlags = {
...currentFeatureFlags,
[feature]: activated,
};
this.store.updateState({ featureFlags: updatedFeatureFlags });
return Promise.resolve(updatedFeatureFlags);
}
/**
* Updates the `preferences` property, which is an object. These are user-controlled features
* found in the settings page.
* @param {string} preference - The preference to enable or disable.
* @param {boolean} value - Indicates whether or not the preference should be enabled or disabled.
* @returns {Promise<object>} Promises a new object; the updated preferences object.
*/
setPreference(preference, value) {
const currentPreferences = this.getPreferences();
const updatedPreferences = {
...currentPreferences,
[preference]: value,
};
this.store.updateState({ preferences: updatedPreferences });
return Promise.resolve(updatedPreferences);
}
/**
* A getter for the `preferences` property
* @returns {Object} A key-boolean map of user-selected preferences.
*/
getPreferences() {
return this.store.getState().preferences;
}
/**
* Sets the completedOnboarding state to true, indicating that the user has completed the
* onboarding process.
*/
completeOnboarding() {
this.store.updateState({ completedOnboarding: true });
return Promise.resolve(true);
}
/**
* A getter for the `ipfsGateway` property
* @returns {string} The current IPFS gateway domain
*/
getIpfsGateway() {
return this.store.getState().ipfsGateway;
}
/**
* A setter for the `ipfsGateway` property
* @param {string} domain - The new IPFS gateway domain
* @returns {Promise<string>} A promise of the update IPFS gateway domain
*/
setIpfsGateway(domain) {
this.store.updateState({ ipfsGateway: domain });
return Promise.resolve(domain);
}
/**
* A setter for the `useLedgerLive` property
* @param {bool} useLedgerLive - Value for ledger live support
* @returns {Promise<string>} A promise of the update to useLedgerLive
*/
async setLedgerLivePreference(useLedgerLive) {
this.store.updateState({ useLedgerLive });
return useLedgerLive;
}
/**
* A getter for the `useLedgerLive` property
* @returns {boolean} User preference of using Ledger Live
*/
getLedgerLivePreference() {
return this.store.getState().useLedgerLive;
}
/**
* A setter for the user preference to dismiss the seed phrase backup reminder
* @param {bool} dismissBackupReminder- User preference for dismissing the back up reminder
* @returns {void}
*/
async setDismissSeedBackUpReminder(dismissSeedBackUpReminder) {
await this.store.updateState({
dismissSeedBackUpReminder,
});
}
//
// PRIVATE METHODS
//
_subscribeToInfuraAvailability() {
this.network.on(NETWORK_EVENTS.INFURA_IS_BLOCKED, () => {
this._setInfuraBlocked(true);
});
this.network.on(NETWORK_EVENTS.INFURA_IS_UNBLOCKED, () => {
this._setInfuraBlocked(false);
});
}
/**
*
* A setter for the `infuraBlocked` property
* @param {boolean} isBlocked - Bool indicating whether Infura is blocked
*
*/
_setInfuraBlocked(isBlocked) {
const { infuraBlocked } = this.store.getState();
if (infuraBlocked === isBlocked) {
return;
}
this.store.updateState({ infuraBlocked: isBlocked });
}
/**
* Updates `accountTokens`, `tokens`, `accountHiddenTokens` and `hiddenTokens` of current account and network according to it.
*
* @param {array} tokens - Array of tokens to be updated.
* @param {array} assetImages - Array of assets objects related to assets added
* @param {array} hiddenTokens - Array of tokens hidden by user
*
*/
_updateAccountTokens(tokens, assetImages, hiddenTokens) {
const {
accountTokens,
chainId,
selectedAddress,
accountHiddenTokens,
} = this._getTokenRelatedStates();
accountTokens[selectedAddress][chainId] = tokens;
accountHiddenTokens[selectedAddress][chainId] = hiddenTokens;
this.store.updateState({
accountTokens,
tokens,
assetImages,
accountHiddenTokens,
hiddenTokens,
});
}
/**
* Detects whether or not a token is ERC-721 compatible.
*
* @param {string} tokensAddress - the token contract address.
*
*/
async _detectIsERC721(tokenAddress) {
const checksumAddress = toChecksumHexAddress(tokenAddress);
// if this token is already in our contract metadata map we don't need
// to check against the contract
if (contractsMap[checksumAddress]?.erc721 === true) {
return Promise.resolve(true);
}
const tokenContract = await this._createEthersContract(
tokenAddress,
abiERC721,
this.ethersProvider,
);
return await tokenContract
.supportsInterface(ERC721_INTERFACE_ID)
.catch((error) => {
console.log('error', error);
log.debug(error);
return false;
});
}
async _createEthersContract(tokenAddress, abi, ethersProvider) {
const tokenContract = await new ethers.Contract(
tokenAddress,
abi,
ethersProvider,
);
return tokenContract;
}
/**
* Updates `tokens` and `hiddenTokens` of current account and network.
*
* @param {string} selectedAddress - Account address to be updated with.
*
*/
_updateTokens(selectedAddress) {
const { tokens, hiddenTokens } = this._getTokenRelatedStates(
selectedAddress,
);
this.store.updateState({ tokens, hiddenTokens });
}
/**
* A getter for `tokens`, `accountTokens`, `hiddenTokens` and `accountHiddenTokens` related states.
*
* @param {string} [selectedAddress] - A new hex address for an account
* @returns {Object.<array, object, string, string>} States to interact with tokens in `accountTokens`
*
*/
_getTokenRelatedStates(selectedAddress) {
const { accountTokens, accountHiddenTokens } = this.store.getState();
if (!selectedAddress) {
// eslint-disable-next-line no-param-reassign
selectedAddress = this.store.getState().selectedAddress;
}
const chainId = this.network.getCurrentChainId();
if (!(selectedAddress in accountTokens)) {
accountTokens[selectedAddress] = {};
}
if (!(selectedAddress in accountHiddenTokens)) {
accountHiddenTokens[selectedAddress] = {};
}
if (!(chainId in accountTokens[selectedAddress])) {
accountTokens[selectedAddress][chainId] = [];
}
if (!(chainId in accountHiddenTokens[selectedAddress])) {
accountHiddenTokens[selectedAddress][chainId] = [];
}
const tokens = accountTokens[selectedAddress][chainId];
const hiddenTokens = accountHiddenTokens[selectedAddress][chainId];
return {
tokens,
accountTokens,
hiddenTokens,
accountHiddenTokens,
chainId,
selectedAddress,
};
}
/**
* Handle the suggestion of an ERC20 asset through `watchAsset`
* *
* @param {Object} tokenMetadata - Token metadata
*
*/
async _handleWatchAssetERC20(tokenMetadata) {
this._validateERC20AssetParams(tokenMetadata);
const address = normalizeAddress(tokenMetadata.address);
const { symbol, decimals, image } = tokenMetadata;
this._addSuggestedERC20Asset(address, symbol, decimals, image);
await this.openPopup();
const tokenAddresses = this.getTokens().filter(
(token) => token.address === address,
);
return tokenAddresses.length > 0;
}
/**
* Validates that the passed options for suggested token have all required properties.
*
* @param {Object} opts - The options object to validate
* @throws {string} Throw a custom error indicating that address, symbol and/or decimals
* doesn't fulfill requirements
*
*/
_validateERC20AssetParams({ address, symbol, decimals }) {
if (!address || !symbol || typeof decimals === 'undefined') {
throw ethErrors.rpc.invalidParams(
`Must specify address, symbol, and decimals.`,
);
}
if (typeof symbol !== 'string') {
throw ethErrors.rpc.invalidParams(`Invalid symbol: not a string.`);
}
if (!(symbol.length > 0)) {
throw ethErrors.rpc.invalidParams(
`Invalid symbol "${symbol}": shorter than a character.`,
);
}
if (!(symbol.length < 12)) {
throw ethErrors.rpc.invalidParams(
`Invalid symbol "${symbol}": longer than 11 characters.`,
);
}
const numDecimals = parseInt(decimals, 10);
if (isNaN(numDecimals) || numDecimals > 36 || numDecimals < 0) {
throw ethErrors.rpc.invalidParams(
`Invalid decimals "${decimals}": must be 0 <= 36.`,
);
}
if (!isValidHexAddress(address, { allowNonPrefixed: false })) {
throw ethErrors.rpc.invalidParams(`Invalid address "${address}".`);
}
}
_addSuggestedERC20Asset(address, symbol, decimals, image) {
const newEntry = {
address,
symbol,
decimals,
image,
unlisted: !LISTED_CONTRACT_ADDRESSES.includes(address),
};
const suggested = this.getSuggestedTokens();
suggested[address] = newEntry;
this.store.updateState({ suggestedTokens: suggested });
}
}