mirror of
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95 lines
2.5 KiB
JavaScript
95 lines
2.5 KiB
JavaScript
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import { Map as $Map, List, fromJS } from 'immutable';
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import actions from './input-actions';
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function getInitState () {
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return new $Map();
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}
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function init (state, { id, value }) {
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state = assertId(state, id);
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return state.setIn(id, fromJS(value));
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}
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function assertId (state, id) {
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if (!state.hasIn(id)) {
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return state.setIn(id, new $Map({ inputId: id }));
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}
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return state;
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}
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function assertList (state, id, key) {
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if (!state.getIn(id).has(key)) {
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return state.setIn(id.concat([key]), new List());
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}
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return state;
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}
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function setKeyValue (state, { id, key, value }) {
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state = assertId(state, id);
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return state.setIn(id.concat([key]), value);
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}
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function increment (state, { id, key }) {
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state = assertId(state, id);
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return state.updateIn(id.concat([key]), (value = 0) => value + 1);
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}
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function clear (state, { id }) {
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if (state.hasIn(id)) {
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return state.removeIn(id);
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}
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return state;
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}
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function addToList (state, { id, key, value }) {
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state = assertId(state, id);
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state = assertList(state, id, key);
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return state.updateIn(id.concat([key]), (list) => list.push(value));
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}
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function updateInList (state, { id, key, value, newValue }) {
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state = assertId(state, id);
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state = assertList(state, id, key);
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return state.updateIn(id.concat([key]), (list) => list.set(list.indexOf(value), newValue));
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}
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function removeFromList (state, { id, key, value }) {
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state = assertId(state, id);
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state = assertList(state, id, key);
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return state.updateIn(id.concat([key]), (list) => list.remove(list.indexOf(value)));
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}
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const inputState = (state = getInitState(), action) => {
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if (!action.id) {
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return state;
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}
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switch (action.type) {
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case actions.INIT:
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return init(state, action);
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case actions.SET_VALUE:
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if (actions.key != null && actions.value != null) {
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throw new Error('Missing required key / value');
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}
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return setKeyValue(state, action);
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case actions.INCREMENT_VALUE:
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return increment(state, action);
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case actions.LIST_PUSH:
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return addToList(state, action);
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case actions.LIST_POP:
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return removeFromList(state, action);
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case actions.LIST_UP:
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return updateInList(state, action);
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case actions.CLEAR:
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return clear(state, action);
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default:
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// console.log('TYPE', action.type, action);
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return state;
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}
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};
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export default inputState;
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