catstodon/app/javascript/glitch/reducers/local_settings.js
2017-11-05 15:05:12 -08:00

126 lines
3 KiB
JavaScript

/*
`reducers/local_settings`
========================
> For more information on the contents of this file, please contact:
>
> - kibigo! [@kibi@glitch.social]
This file provides our Redux reducers related to local settings. The
associated actions are:
- __`STORE_HYDRATE` :__
Used to hydrate the store with its initial values.
- __`LOCAL_SETTING_CHANGE` :__
Used to change the value of a local setting in the store.
*/
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
/*
Imports:
--------
*/
// Package imports //
import { Map as ImmutableMap } from 'immutable';
// Mastodon imports //
import { STORE_HYDRATE } from '../../mastodon/actions/store';
// Our imports //
import { LOCAL_SETTING_CHANGE } from '../actions/local_settings';
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
/*
initialState:
-------------
You can see the default values for all of our local settings here.
These are only used if no previously-saved values exist.
*/
const initialState = ImmutableMap({
layout : 'auto',
stretch : true,
navbar_under : false,
side_arm : 'none',
collapsed : ImmutableMap({
enabled : true,
auto : ImmutableMap({
all : false,
notifications : true,
lengthy : true,
reblogs : false,
replies : false,
media : false,
}),
backgrounds : ImmutableMap({
user_backgrounds : false,
preview_images : false,
}),
}),
media : ImmutableMap({
letterbox : true,
fullwidth : true,
}),
});
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
/*
Helper functions:
-----------------
### `hydrate(state, localSettings)`
`hydrate()` is used to hydrate the `local_settings` part of our store
with its initial values. The `state` will probably just be the
`initialState`, and the `localSettings` should be whatever we pulled
from `localStorage`.
*/
const hydrate = (state, localSettings) => state.mergeDeep(localSettings);
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
/*
`localSettings(state = initialState, action)`:
----------------------------------------------
This function holds our actual reducer.
If our action is `STORE_HYDRATE`, then we call `hydrate()` with the
`local_settings` property of the provided `action.state`.
If our action is `LOCAL_SETTING_CHANGE`, then we set `action.key` in
our state to the provided `action.value`. Note that `action.key` MUST
be an array, since we use `setIn()`.
> __Note :__
> We call this function `localSettings`, but its associated object
> in the store is `local_settings`.
*/
export default function localSettings(state = initialState, action) {
switch(action.type) {
case STORE_HYDRATE:
return hydrate(state, action.state.get('local_settings'));
case LOCAL_SETTING_CHANGE:
return state.setIn(action.key, action.value);
default:
return state;
}
};