hometown/app/javascript/mastodon/selectors/index.js

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import { createSelector } from 'reselect';
import { List as ImmutableList, is } from 'immutable';
import { me } from '../initial_state';
const getAccountBase = (state, id) => state.getIn(['accounts', id], null);
const getAccountCounters = (state, id) => state.getIn(['accounts_counters', id], null);
const getAccountRelationship = (state, id) => state.getIn(['relationships', id], null);
const getAccountMoved = (state, id) => state.getIn(['accounts', state.getIn(['accounts', id, 'moved'])]);
export const makeGetAccount = () => {
return createSelector([getAccountBase, getAccountCounters, getAccountRelationship, getAccountMoved], (base, counters, relationship, moved) => {
if (base === null) {
return null;
}
return base.merge(counters).withMutations(map => {
map.set('relationship', relationship);
map.set('moved', moved);
});
});
};
const toServerSideType = columnType => {
switch (columnType) {
case 'home':
case 'notifications':
case 'public':
case 'thread':
case 'account':
return columnType;
default:
if (columnType.indexOf('list:') > -1) {
return 'home';
} else {
return 'public'; // community, account, hashtag
}
}
};
const escapeRegExp = string =>
string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
const regexFromFilters = filters => {
if (filters.size === 0) {
return null;
}
return new RegExp(filters.map(filter => {
let expr = escapeRegExp(filter.get('phrase'));
if (filter.get('whole_word')) {
if (/^[\w]/.test(expr)) {
expr = `\\b${expr}`;
}
if (/[\w]$/.test(expr)) {
expr = `${expr}\\b`;
}
}
return expr;
}).join('|'), 'i');
};
// Memoize the filter regexps for each valid server contextType
const makeGetFiltersRegex = () => {
let memo = {};
return (state, { contextType }) => {
if (!contextType) return ImmutableList();
const serverSideType = toServerSideType(contextType);
const filters = state.get('filters', ImmutableList()).filter(filter => filter.get('context').includes(serverSideType) && (filter.get('expires_at') === null || Date.parse(filter.get('expires_at')) > (new Date())));
if (!memo[serverSideType] || !is(memo[serverSideType].filters, filters)) {
const dropRegex = regexFromFilters(filters.filter(filter => filter.get('irreversible')));
const regex = regexFromFilters(filters);
memo[serverSideType] = { filters: filters, results: [dropRegex, regex] };
}
return memo[serverSideType].results;
};
};
export const getFiltersRegex = makeGetFiltersRegex();
export const makeGetStatus = () => {
return createSelector(
[
(state, { id }) => state.getIn(['statuses', id]),
(state, { id }) => state.getIn(['statuses', state.getIn(['statuses', id, 'reblog'])]),
(state, { id }) => state.getIn(['accounts', state.getIn(['statuses', id, 'account'])]),
(state, { id }) => state.getIn(['accounts', state.getIn(['statuses', state.getIn(['statuses', id, 'reblog']), 'account'])]),
getFiltersRegex,
],
(statusBase, statusReblog, accountBase, accountReblog, filtersRegex) => {
if (!statusBase) {
return null;
}
if (statusReblog) {
statusReblog = statusReblog.set('account', accountReblog);
} else {
statusReblog = null;
}
const dropRegex = (accountReblog || accountBase).get('id') !== me && filtersRegex[0];
if (dropRegex && dropRegex.test(statusBase.get('reblog') ? statusReblog.get('search_index') : statusBase.get('search_index'))) {
return null;
}
const regex = (accountReblog || accountBase).get('id') !== me && filtersRegex[1];
const filtered = regex && regex.test(statusBase.get('reblog') ? statusReblog.get('search_index') : statusBase.get('search_index'));
return statusBase.withMutations(map => {
map.set('reblog', statusReblog);
map.set('account', accountBase);
map.set('filtered', filtered);
});
},
);
};
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const getAlertsBase = state => state.get('alerts');
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export const getAlerts = createSelector([getAlertsBase], (base) => {
let arr = [];
base.forEach(item => {
arr.push({
message: item.get('message'),
message_values: item.get('message_values'),
title: item.get('title'),
key: item.get('key'),
dismissAfter: 5000,
barStyle: {
zIndex: 200,
},
});
});
return arr;
});
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export const makeGetNotification = () => {
return createSelector([
(_, base) => base,
(state, _, accountId) => state.getIn(['accounts', accountId]),
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], (base, account) => {
return base.set('account', account);
});
};
export const getAccountGallery = createSelector([
(state, id) => state.getIn(['timelines', `account:${id}:media`, 'items'], ImmutableList()),
state => state.get('statuses'),
], (statusIds, statuses) => {
let medias = ImmutableList();
statusIds.forEach(statusId => {
const status = statuses.get(statusId);
medias = medias.concat(status.get('media_attachments').map(media => media.set('status', status)));
});
return medias;
});