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settings: expose settings that have only been modified

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also reduce unnecessary loads from storage
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dumbmoron 2024-07-13 12:25:27 +00:00
parent 2a0366a58d
commit 2cce4bd521
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1 changed files with 12 additions and 7 deletions
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19
web/src/lib/settings.ts
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@ -1,4 +1,4 @@
import { readable, type Updater } from 'svelte/store';
import { derived, readable, type Updater } from 'svelte/store';
import { merge } from 'ts-deepmerge';
import type { RecursivePartial } from './types/generic';
@ -49,25 +49,30 @@ const loadFromStorage = () => {
return parsed;
}
let update: (_: Updater<CobaltSettings>) => void;
let update: (_: Updater<PartialSettings>) => void;
// deep merge partial type into full CobaltSettings type
const mergeWithDefaults = (partial: PartialSettings) => {
return merge(defaultSettings, partial) as CobaltSettings;
}
export default readable<CobaltSettings>(
mergeWithDefaults(loadFromStorage()),
export const storedSettings = readable<PartialSettings>(
loadFromStorage(),
(_, _update) => { update = _update }
);
// update settings from outside
export function updateSetting(partial: PartialSettings) {
update(() => {
update((current) => {
const updated = writeToStorage(
merge(loadFromStorage(), partial)
merge(current, partial)
);
return mergeWithDefaults(updated);
return updated;
});
}
export default derived(
storedSettings,
$settings => mergeWithDefaults($settings)
);