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import { derived, readable, type Updater } from 'svelte/store';
import { browser } from '$app/environment';
import { merge } from 'ts-deepmerge';
import type {
PartialSettings,
AllPartialSettingsWithSchema,
CobaltSettings
} from '../types/settings';
import { migrateOldSettings } from '../settings/migrate-v7';
import defaultSettings from '../settings/defaults';
import { migrate } from '$lib/settings/migrate';
const updatePlausiblePreference = (settings: PartialSettings) => {
if (settings.privacy?.disableAnalytics) {
localStorage.setItem('plausible_ignore', 'true');
} else if (localStorage.getItem('plausible_ignore') !== null) {
localStorage.removeItem('plausible_ignore');
}
}
const writeToStorage = (settings: PartialSettings) => {
localStorage.setItem(
"settings",
JSON.stringify(settings)
);
return settings;
}
const loadFromStorage = () => {
if (!browser)
return {};
const settings = localStorage.getItem('settings');
if (!settings) {
const migrated = migrateOldSettings();
if (migrated) {
return writeToStorage(migrate(migrated));
}
return {};
}
return loadFromString(settings);
}
export const loadFromString = (settings: string): PartialSettings => {
const parsed = JSON.parse(settings) as AllPartialSettingsWithSchema;
if (parsed.schemaVersion < defaultSettings.schemaVersion) {
return writeToStorage(migrate(parsed));
}
return parsed as PartialSettings;
}
let update: (_: Updater<PartialSettings>) => void;
// deep merge partial type into full CobaltSettings type
const mergeWithDefaults = (partial: PartialSettings) => {
return merge(defaultSettings, partial) as CobaltSettings;
}
export const storedSettings = readable<PartialSettings>(
loadFromStorage(),
(_, _update) => { update = _update }
);
// update settings from outside
export function updateSetting(partial: PartialSettings) {
update((current) => {
const updated = writeToStorage(
merge(
current,
partial,
{ schemaVersion: defaultSettings.schemaVersion }
)
);
updatePlausiblePreference(partial);
return updated;
});
}
export function resetSettings() {
update(() => {
localStorage.removeItem('settings');
return {};
});
}
export default derived(
storedSettings,
$settings => mergeWithDefaults($settings)
);
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