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confirmation.js
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confirmation.js
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import React, {
useCallback,
useEffect,
useMemo,
useReducer,
useState,
} from 'react';
import PropTypes from 'prop-types';
import { useDispatch, useSelector } from 'react-redux';
import { useHistory } from 'react-router-dom';
import { isEqual } from 'lodash';
import { produce } from 'immer';
import log from 'loglevel';
///: BEGIN:ONLY_INCLUDE_IN(snaps)
import { ApprovalType } from '@metamask/controller-utils';
///: END:ONLY_INCLUDE_IN
import fetchWithCache from '../../../shared/lib/fetch-with-cache';
import Box from '../../components/ui/box';
import MetaMaskTemplateRenderer from '../../components/app/metamask-template-renderer';
import ConfirmationWarningModal from '../../components/app/confirmation-warning-modal';
import { DEFAULT_ROUTE } from '../../helpers/constants/routes';
import { Size, TextColor } from '../../helpers/constants/design-system';
import { useI18nContext } from '../../hooks/useI18nContext';
import {
///: BEGIN:ONLY_INCLUDE_IN(snaps)
getTargetSubjectMetadata,
///: END:ONLY_INCLUDE_IN
getUnapprovedTemplatedConfirmations,
getUnapprovedTxCount,
getApprovalFlows,
getTotalUnapprovedCount,
useSafeChainsListValidationSelector,
} from '../../selectors';
import NetworkDisplay from '../../components/app/network-display/network-display';
import Callout from '../../components/ui/callout';
import { Icon, IconName } from '../../components/component-library';
import Loading from '../../components/ui/loading-screen';
///: BEGIN:ONLY_INCLUDE_IN(snaps)
import SnapAuthorshipHeader from '../../components/app/snaps/snap-authorship-header';
import { getSnapName } from '../../helpers/utils/util';
///: END:ONLY_INCLUDE_IN
///: BEGIN:ONLY_INCLUDE_IN(keyring-snaps)
import { SNAP_MANAGE_ACCOUNTS_CONFIRMATION_TYPES } from '../../../shared/constants/app';
///: END:ONLY_INCLUDE_IN
import { DAY } from '../../../shared/constants/time';
import ConfirmationFooter from './components/confirmation-footer';
import {
getTemplateValues,
getTemplateAlerts,
getTemplateState,
} from './templates';
// TODO(rekmarks): This component and all of its sub-components should probably
// be renamed to "Dialog", now that we are using it in that manner.
/**
* a very simple reducer using produce from Immer to keep state manipulation
* immutable and painless. This state is not stored in redux state because it
* should persist only for the lifespan of the current session, and will only
* be used on this page. Dismissing alerts for confirmations should persist
* while the user pages back and forth between confirmations. However, if the
* user closes the confirmation window and later reopens the extension they
* should be displayed the alerts again.
*/
const alertStateReducer = produce((state, action) => {
switch (action.type) {
case 'dismiss':
if (state?.[action.confirmationId]?.[action.alertId]) {
state[action.confirmationId][action.alertId].dismissed = true;
}
break;
case 'set':
if (!state[action.confirmationId]) {
state[action.confirmationId] = {};
}
action.alerts.forEach((alert) => {
state[action.confirmationId][alert.id] = {
...alert,
dismissed: false,
};
});
break;
default:
throw new Error(
'You must provide a type when dispatching an action for alertState',
);
}
});
/**
* Encapsulates the state and effects needed to manage alert state for the
* confirmation page in a custom hook. This hook is not likely to be used
* outside of this file, but it helps to reduce complexity of the primary
* component.
*
* @param {object} pendingConfirmation - a pending confirmation waiting for
* user approval
* @param {object} state - The state object consist of required info to determine alerts.
* @param state.unapprovedTxsCount
* @param state.useSafeChainsListValidation
* @param state.matchedChain
* @param state.providerError
* @returns {[alertState: object, dismissAlert: Function]} A tuple with
* the current alert state and function to dismiss an alert by id
*/
function useAlertState(
pendingConfirmation,
{
unapprovedTxsCount,
useSafeChainsListValidation,
matchedChain,
providerError,
} = {},
) {
const [alertState, dispatch] = useReducer(alertStateReducer, {});
/**
* Computation of the current alert state happens every time the current
* pendingConfirmation changes. The async function getTemplateAlerts is
* responsible for returning alert state. Setting state on unmounted
* components is an anti-pattern, so we use a isMounted variable to keep
* track of the current state of the component. Returning a function that
* sets isMounted to false when the component is unmounted.
*/
useEffect(() => {
let isMounted = true;
if (pendingConfirmation) {
getTemplateAlerts(pendingConfirmation, {
unapprovedTxsCount,
useSafeChainsListValidation,
matchedChain,
providerError,
}).then((alerts) => {
if (isMounted && alerts.length > 0) {
dispatch({
type: 'set',
confirmationId: pendingConfirmation.id,
alerts,
});
}
});
}
return () => {
isMounted = false;
};
}, [
pendingConfirmation,
unapprovedTxsCount,
useSafeChainsListValidation,
matchedChain,
providerError,
]);
const dismissAlert = useCallback(
(alertId) => {
dispatch({
type: 'dismiss',
confirmationId: pendingConfirmation.id,
alertId,
});
},
[pendingConfirmation],
);
return [alertState, dismissAlert];
}
function useTemplateState(pendingConfirmation) {
const [templateState, setTemplateState] = useState({});
useEffect(() => {
let isMounted = true;
if (pendingConfirmation) {
getTemplateState(pendingConfirmation).then((state) => {
if (isMounted && Object.values(state).length > 0) {
setTemplateState((prevState) => ({
...prevState,
[pendingConfirmation.id]: state,
}));
}
});
}
return () => {
isMounted = false;
};
}, [pendingConfirmation]);
return [templateState];
}
export default function ConfirmationPage({
redirectToHomeOnZeroConfirmations = true,
}) {
const t = useI18nContext();
const dispatch = useDispatch();
const history = useHistory();
const pendingConfirmations = useSelector(
getUnapprovedTemplatedConfirmations,
isEqual,
);
const unapprovedTxsCount = useSelector(getUnapprovedTxCount);
const approvalFlows = useSelector(getApprovalFlows, isEqual);
const totalUnapprovedCount = useSelector(getTotalUnapprovedCount);
const useSafeChainsListValidation = useSelector(
useSafeChainsListValidationSelector,
);
const [approvalFlowLoadingText, setApprovalFlowLoadingText] = useState(null);
const [currentPendingConfirmation, setCurrentPendingConfirmation] =
useState(0);
const pendingConfirmation = pendingConfirmations[currentPendingConfirmation];
const [matchedChain, setMatchedChain] = useState({});
const [currencySymbolWarning, setCurrencySymbolWarning] = useState(null);
const [providerError, setProviderError] = useState(null);
const [alertState, dismissAlert] = useAlertState(pendingConfirmation, {
unapprovedTxsCount,
useSafeChainsListValidation,
matchedChain,
providerError,
});
const [templateState] = useTemplateState(pendingConfirmation);
const [showWarningModal, setShowWarningModal] = useState(false);
const [inputStates, setInputStates] = useState({});
const setInputState = (key, value) => {
setInputStates((currentState) => ({ ...currentState, [key]: value }));
};
const [loading, setLoading] = useState(false);
const [loadingText, setLoadingText] = useState();
const [submitAlerts, setSubmitAlerts] = useState([]);
///: BEGIN:ONLY_INCLUDE_IN(snaps)
const targetSubjectMetadata = useSelector((state) =>
getTargetSubjectMetadata(state, pendingConfirmation?.origin),
);
const SNAP_DIALOG_TYPE = [
ApprovalType.SnapDialogAlert,
ApprovalType.SnapDialogConfirmation,
ApprovalType.SnapDialogPrompt,
];
///: END:ONLY_INCLUDE_IN
///: BEGIN:ONLY_INCLUDE_IN(keyring-snaps)
SNAP_DIALOG_TYPE.push(
...Object.values(SNAP_MANAGE_ACCOUNTS_CONFIRMATION_TYPES),
);
///: END:ONLY_INCLUDE_IN
///: BEGIN:ONLY_INCLUDE_IN(snaps,keyring-snaps)
const isSnapDialog = SNAP_DIALOG_TYPE.includes(pendingConfirmation?.type);
// When pendingConfirmation is undefined, this will also be undefined
const snapName =
isSnapDialog &&
targetSubjectMetadata &&
getSnapName(pendingConfirmation?.origin, targetSubjectMetadata);
///: END:ONLY_INCLUDE_IN
const INPUT_STATE_CONFIRMATIONS = [
///: BEGIN:ONLY_INCLUDE_IN(snaps)
ApprovalType.SnapDialogPrompt,
///: END:ONLY_INCLUDE_IN
];
// Generating templatedValues is potentially expensive, and if done on every render
// will result in a new object. Avoiding calling this generation unnecessarily will
// improve performance and prevent unnecessary draws.
const templatedValues = useMemo(() => {
return pendingConfirmation
? getTemplateValues(
{
///: BEGIN:ONLY_INCLUDE_IN(snaps)
snapName: isSnapDialog && snapName,
///: END:ONLY_INCLUDE_IN
...pendingConfirmation,
},
t,
dispatch,
history,
setInputState,
{ matchedChain, currencySymbolWarning },
)
: {};
}, [
pendingConfirmation,
t,
dispatch,
history,
matchedChain,
currencySymbolWarning,
///: BEGIN:ONLY_INCLUDE_IN(snaps,keyring-snaps)
isSnapDialog,
snapName,
///: END:ONLY_INCLUDE_IN
]);
useEffect(() => {
// If the number of pending confirmations reduces to zero when the user
// return them to the default route. Otherwise, if the number of pending
// confirmations reduces to a number that is less than the currently
// viewed index, reset the index.
if (
pendingConfirmations.length === 0 &&
(approvalFlows.length === 0 || totalUnapprovedCount !== 0) &&
redirectToHomeOnZeroConfirmations
) {
history.push(DEFAULT_ROUTE);
} else if (
pendingConfirmations.length &&
pendingConfirmations.length <= currentPendingConfirmation
) {
setCurrentPendingConfirmation(pendingConfirmations.length - 1);
}
}, [
pendingConfirmations,
approvalFlows,
totalUnapprovedCount,
history,
currentPendingConfirmation,
redirectToHomeOnZeroConfirmations,
]);
useEffect(() => {
const childFlow = approvalFlows[approvalFlows.length - 1];
setApprovalFlowLoadingText(childFlow?.loadingText ?? null);
}, [approvalFlows]);
useEffect(() => {
async function fetchSafeChainsList() {
try {
if (useSafeChainsListValidation) {
const response = await fetchWithCache({
url: 'https://chainid.network/chains.json',
cacheOptions: { cacheRefreshTime: DAY },
functionName: 'getSafeChainsList',
});
const safeChainsList = response;
const _matchedChain = safeChainsList.find(
(chain) =>
chain.chainId ===
parseInt(pendingConfirmation.requestData.chainId, 16),
);
setMatchedChain(_matchedChain);
setProviderError(null);
if (
_matchedChain?.nativeCurrency?.symbol?.toLowerCase() ===
pendingConfirmation.requestData.ticker?.toLowerCase()
) {
setCurrencySymbolWarning(null);
} else {
setCurrencySymbolWarning(
t('chainListReturnedDifferentTickerSymbol', [
_matchedChain?.nativeCurrency?.symbol,
]),
);
}
}
} catch (error) {
log.warn('Failed to fetch the chainList from chainid.network', error);
setProviderError(error);
setMatchedChain(null);
setCurrencySymbolWarning(null);
// Swallow the error here to not block the user from adding a custom network
}
}
if (pendingConfirmation?.type === ApprovalType.AddEthereumChain) {
fetchSafeChainsList();
}
}, [pendingConfirmation, t, useSafeChainsListValidation]);
if (!pendingConfirmation) {
if (approvalFlows.length > 0) {
return <Loading loadingMessage={approvalFlowLoadingText} />;
}
return null;
}
const hasInputState = (type) => {
return INPUT_STATE_CONFIRMATIONS.includes(type);
};
const getInputState = (type) => {
return inputStates[type] ?? '';
};
const handleSubmitResult = (submitResult) => {
if (submitResult?.length > 0) {
setLoadingText(templatedValues.submitText);
setSubmitAlerts(submitResult);
setLoading(true);
} else {
setLoading(false);
}
};
const handleSubmit = async () => {
setLoading(true);
if (templateState[pendingConfirmation.id]?.useWarningModal) {
setShowWarningModal(true);
} else {
const inputState = hasInputState(pendingConfirmation.type)
? getInputState(pendingConfirmation.type)
: null;
// submit result is an array of errors or empty on success
const submitResult = await templatedValues.onSubmit(inputState);
handleSubmitResult(submitResult);
}
};
return (
<div className="confirmation-page">
{pendingConfirmations.length > 1 && (
<div className="confirmation-page__navigation">
<p>
{t('xOfYPending', [
currentPendingConfirmation + 1,
pendingConfirmations.length,
])}
</p>
{currentPendingConfirmation > 0 && (
<button
className="confirmation-page__navigation-button"
onClick={() =>
setCurrentPendingConfirmation(currentPendingConfirmation - 1)
}
>
<Icon name={IconName.ArrowLeft} />
</button>
)}
<button
className="confirmation-page__navigation-button"
disabled={
currentPendingConfirmation + 1 === pendingConfirmations.length
}
onClick={() =>
setCurrentPendingConfirmation(currentPendingConfirmation + 1)
}
>
<Icon name={IconName.ArrowRight} />
</button>
</div>
)}
<div className="confirmation-page__content">
{templatedValues.networkDisplay ? (
<Box justifyContent="center" marginTop={2}>
<NetworkDisplay
indicatorSize={Size.XS}
labelProps={{ color: TextColor.textDefault }}
/>
</Box>
) : null}
{
///: BEGIN:ONLY_INCLUDE_IN(snaps)
isSnapDialog && (
<SnapAuthorshipHeader snapId={pendingConfirmation?.origin} />
)
///: END:ONLY_INCLUDE_IN
}
<MetaMaskTemplateRenderer sections={templatedValues.content} />
{showWarningModal && (
<ConfirmationWarningModal
onSubmit={async () => {
const res = await templatedValues.onSubmit();
await handleSubmitResult(res);
setShowWarningModal(false);
}}
onCancel={templatedValues.onCancel}
/>
)}
</div>
<ConfirmationFooter
alerts={
alertState[pendingConfirmation.id] &&
Object.values(alertState[pendingConfirmation.id])
.filter((alert) => alert.dismissed === false)
.map((alert, idx, filtered) => (
<Callout
key={alert.id}
severity={alert.severity}
dismiss={() => dismissAlert(alert.id)}
isFirst={idx === 0}
isLast={idx === filtered.length - 1}
isMultiple={filtered.length > 1}
>
<MetaMaskTemplateRenderer sections={alert.content} />
</Callout>
))
}
///: BEGIN:ONLY_INCLUDE_IN(snaps,keyring-snaps)
style={
isSnapDialog
? {
boxShadow: 'var(--shadow-size-lg) var(--color-shadow-default)',
}
: {}
}
actionsStyle={
isSnapDialog
? {
borderTop: 0,
}
: {}
}
///: END:ONLY_INCLUDE_IN
onSubmit={handleSubmit}
onCancel={templatedValues.onCancel}
submitText={templatedValues.submitText}
cancelText={templatedValues.cancelText}
loadingText={loadingText || templatedValues.loadingText}
loading={loading}
submitAlerts={submitAlerts.map((alert, idx) => (
<Callout key={alert.id} severity={alert.severity} isFirst={idx === 0}>
<MetaMaskTemplateRenderer sections={alert.content} />
</Callout>
))}
/>
</div>
);
}
ConfirmationPage.propTypes = {
redirectToHomeOnZeroConfirmations: PropTypes.bool,
};