anki/ts/graphs/preferences.ts

72 lines
2.0 KiB
TypeScript

import type pb from "anki/backend_proto";
import { getGraphPreferences, setGraphPreferences } from "./graph-helpers";
import { Writable, writable, get } from "svelte/store";
export interface CustomStore<T> extends Writable<T> {
subscribe: (getter: (value: T) => void) => () => void;
set: (value: T) => void;
}
export type PreferenceStore = {
[K in keyof Omit<pb.BackendProto.GraphsPreferences, "toJSON">]: CustomStore<
pb.BackendProto.GraphsPreferences[K]
>;
};
export type PreferencePayload = {
[K in keyof Omit<
pb.BackendProto.GraphsPreferences,
"toJSON"
>]: pb.BackendProto.GraphsPreferences[K];
};
function createPreference<T>(
initialValue: T,
savePreferences: () => void
): CustomStore<T> {
const { subscribe, set, update } = writable(initialValue);
return {
subscribe,
set: (value: T): void => {
set(value);
savePreferences();
},
update: (updater: (value: T) => T): void => {
update(updater);
savePreferences();
},
};
}
function preparePreferences(
graphsPreferences: pb.BackendProto.GraphsPreferences
): PreferenceStore {
const preferences: Partial<PreferenceStore> = {};
function constructPreferences(): PreferencePayload {
const payload: Partial<PreferencePayload> = {};
for (const key in preferences as PreferenceStore) {
payload[key] = get(preferences[key]);
}
return payload as PreferencePayload;
}
function savePreferences(): void {
setGraphPreferences(constructPreferences());
}
for (const [key, value] of Object.entries(graphsPreferences)) {
preferences[key] = createPreference(value, savePreferences);
}
return preferences as PreferenceStore;
}
export async function getPreferences(): Promise<PreferenceStore> {
const initialPreferences = await getGraphPreferences();
return preparePreferences(initialPreferences);
}