77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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const initialState = {
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subscriptions: {
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Reserved: null,
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Dropped: null,
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DataChanged: null
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},
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pending: {
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Reserved: false,
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Dropped: false,
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DataChanged: false
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},
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events: []
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};
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const sortEvents = (a, b) => {
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if (a.state === 'pending' && b.state !== 'pending') return -1;
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if (a.state !== 'pending' && b.state === 'pending') return 1;
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const d = b.block.minus(a.block).toFixed(0);
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if (d === 0) return b.index.minus(a.index).toFixed(0);
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return d;
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};
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export default (state = initialState, action) => {
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if (!(action.name in state.subscriptions)) { // invalid event name
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return state;
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}
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if (action.type === 'events subscribe start') {
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return { ...state, pending: { ...state.pending, [action.name]: true } };
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}
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if (action.type === 'events subscribe fail') {
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return { ...state, pending: { ...state.pending, [action.name]: false } };
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}
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if (action.type === 'events subscribe success') {
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return {
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...state,
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pending: { ...state.pending, [action.name]: false },
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subscriptions: { ...state.subscriptions, [action.name]: action.subscription }
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};
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}
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if (action.type === 'events unsubscribe') {
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return {
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...state,
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pending: { ...state.pending, [action.name]: false },
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subscriptions: { ...state.subscriptions, [action.name]: null },
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events: state.events.filter((event) => event.type !== action.name)
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};
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}
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if (action.type === 'events event') {
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return { ...state, events: state.events
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.filter((event) => event.key !== action.event.key)
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.concat(action.event)
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.sort(sortEvents)
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};
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}
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return state;
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};
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