53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
import { addMessages, inform, print } from 'state/messages';
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import { isChannel } from 'utils';
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export const beforeHandler = '_before';
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export const notFoundHandler = 'commandNotFound';
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function createContext({ dispatch, getState }, { network, channel }) {
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return {
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dispatch,
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getState,
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network,
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channel,
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inChannel: isChannel(channel)
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};
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}
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function process({ dispatch, network, channel }, result) {
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if (typeof result === 'string') {
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dispatch(inform(result, network, channel));
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} else if (Array.isArray(result)) {
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if (typeof result[0] === 'string') {
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dispatch(inform(result, network, channel));
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} else if (typeof result[0] === 'object') {
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dispatch(addMessages(result, network, channel));
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}
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} else if (typeof result === 'object' && result) {
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dispatch(print(result.content, network, channel, result.type));
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}
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}
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export default function createCommandMiddleware(type, handlers) {
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return store => next => action => {
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if (action.type === type) {
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const words = action.command.slice(1).split(' ');
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const command = words[0].toLowerCase();
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const params = words.slice(1);
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if (command in handlers) {
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const ctx = createContext(store, action);
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if (beforeHandler in handlers) {
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process(ctx, handlers[beforeHandler](ctx, command, ...params));
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}
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process(ctx, handlers[command](ctx, ...params));
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} else if (notFoundHandler in handlers) {
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const ctx = createContext(store, action);
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process(ctx, handlers[notFoundHandler](ctx, command, ...params));
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}
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}
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return next(action);
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};
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}
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