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Refactor

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This commit is contained in:
Jordan Eldredge 2017-10-03 21:46:12 -07:00
parent 35bf29f47c
commit d32cf0da2c
1 changed files with 33 additions and 31 deletions
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64
js/reducers.js
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@ -46,6 +46,22 @@ import {
} from "./actionTypes";
import { playlistEnabled } from "./config";
const mapObject = (obj, iteratee) =>
// TODO: Could return the original reference if no values change
Object.keys(obj).reduce((newObj, key) => {
newObj[key] = iteratee(obj[key], key);
return newObj;
}, {});
const filterObject = (obj, predicate) =>
// TODO: Could return the original reference if no values change
Object.keys(obj).reduce((newObj, key) => {
if (predicate(obj[key], key)) {
newObj[key] = obj[key];
}
return newObj;
}, {});
const defaultUserInput = {
focus: null,
bandFocused: null,
@ -231,45 +247,31 @@ const defaultTracksState = {
const tracks = (state = defaultTracksState, action) => {
switch (action.type) {
case CLICKED_TRACK:
return Object.keys(state).reduce((newTracks, id) => {
newTracks[id] = { ...state[id], selected: id === String(action.id) };
return newTracks;
}, {});
return mapObject(state, (track, id) => ({
...track,
selected: id === String(action.id)
}));
case CTRL_CLICKED_TRACK:
const track = state[action.id];
const newTrack = { ...track, selected: !track.selected };
return { ...state, [action.id]: newTrack };
const t = state[action.id];
return {
...state,
[action.id]: { ...t, selected: !t.selected }
};
case SELECT_ALL:
return Object.keys(state).reduce((newTracks, id) => {
newTracks[id] = { ...state[id], selected: true };
return newTracks;
}, {});
return mapObject(state, track => ({ ...track, selected: true }));
case SELECT_ZERO:
return Object.keys(state).reduce((newTracks, id) => {
newTracks[id] = { ...state[id], selected: false };
return newTracks;
}, {});
return mapObject(state, track => ({ ...track, selected: false }));
case INVERT_SELECTION:
return Object.keys(state).reduce((newTracks, id) => {
newTracks[id] = { ...state[id], selected: !state[id].selected };
return newTracks;
}, {});
return mapObject(state, track => ({
...track,
selected: !track.selected
}));
case REMOVE_ALL_TRACKS:
return {};
case CROP_TRACKS:
return Object.keys(state).reduce((newTracks, id) => {
if (state[id].selected) {
newTracks[id] = state[id];
}
return newTracks;
}, {});
return filterObject(state, track => track.selected);
case REMOVE_SELECTED_TRACKS:
return Object.keys(state).reduce((newTracks, id) => {
if (!state[id].selected) {
newTracks[id] = state[id];
}
return newTracks;
}, {});
return filterObject(state, track => !track.selected);
default:
return state;
}