gristlabs_grist-core/app/client/models/UserPrefs.ts

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import {localStorageObs} from 'app/client/lib/localStorageObs';
import {AppModel} from 'app/client/models/AppModel';
import {UserOrgPrefs, UserPrefs} from 'app/common/Prefs';
import {Computed, Observable} from 'grainjs';
import {CheckerT} from 'ts-interface-checker';
interface PrefsTypes {
userOrgPrefs: UserOrgPrefs;
userPrefs: UserPrefs;
}
function makePrefFunctions<P extends keyof PrefsTypes>(prefsTypeName: P) {
type PrefsType = PrefsTypes[P];
/**
* Creates an observable that returns a PrefsType, and which stores changes when set.
*
* For anon user, the prefs live in localStorage. Note that the observable isn't actually watching
* for changes on the server, it will only change when set.
*/
function getPrefsObs(appModel: AppModel): Observable<PrefsType> {
if (appModel.currentValidUser) {
let prefs: PrefsType | undefined;
if (prefsTypeName === 'userPrefs') {
prefs = appModel.currentValidUser.prefs;
} else {
prefs = appModel.currentOrg?.[prefsTypeName];
}
const prefsObs = Observable.create<PrefsType>(null, prefs ?? {});
return Computed.create(null, (use) => use(prefsObs))
.onWrite(newPrefs => {
prefsObs.set(newPrefs);
return appModel.api.updateOrg('current', {[prefsTypeName]: newPrefs});
});
} else {
const userId = appModel.currentUser?.id || 0;
const jsonPrefsObs = localStorageObs(`${prefsTypeName}:u=${userId}`);
return Computed.create(null, jsonPrefsObs, (use, p) => (p && JSON.parse(p) || {}) as PrefsType)
.onWrite(newPrefs => {
jsonPrefsObs.set(JSON.stringify(newPrefs));
});
}
}
/**
* Creates an observable that returns a particular preference value from `prefsObs`, and which
* stores it when set.
*/
function getPrefObs<Name extends keyof PrefsType>(
prefsObs: Observable<PrefsType>,
prefName: Name,
options: {
defaultValue?: Exclude<PrefsType[Name], undefined>;
checker?: CheckerT<PrefsType[Name]>;
} = {}
): Observable<PrefsType[Name] | undefined> {
const {defaultValue, checker} = options;
return Computed.create(null, (use) => {
const prefs = use(prefsObs);
if (!(prefName in prefs)) { return defaultValue; }
const value = prefs[prefName];
if (checker) {
try {
checker.check(value);
} catch (e) {
console.error(`getPrefObs: preference ${prefName.toString()} has value of invalid type`, e);
return defaultValue;
}
}
return value;
}).onWrite(value => prefsObs.set({...prefsObs.get(), [prefName]: value}));
}
return {getPrefsObs, getPrefObs};
}
// Functions actually exported are:
// - getUserOrgPrefsObs(appModel): Observable<UserOrgPrefs>
// - getUserOrgPrefObs(userOrgPrefsObs, prefName): Observable<PrefType[prefName]>
// - getUserPrefsObs(appModel): Observable<UserPrefs>
// - getUserPrefObs(userPrefsObs, prefName): Observable<PrefType[prefName]>
export const {getPrefsObs: getUserOrgPrefsObs, getPrefObs: getUserOrgPrefObs} = makePrefFunctions('userOrgPrefs');
export const {getPrefsObs: getUserPrefsObs, getPrefObs: getUserPrefObs} = makePrefFunctions('userPrefs');
// For preferences that store a list of items (such as seen docTours), this helper updates the
// preference to add itemId to it (e.g. to avoid auto-starting the docTour again in the future).
// prefKey is used only to log a more informative warning on error.
export function markAsSeen<T>(seenIdsObs: Observable<T[] | undefined>, itemId: T) {
const seenIds = seenIdsObs.get() || [];
try {
if (!seenIds.includes(itemId)) {
const seen = new Set(seenIds);
seen.add(itemId);
seenIdsObs.set([...seen].sort());
}
} catch (e) {
// If we fail to save this preference, it's probably not worth alerting the user about,
// so just log to console.
// tslint:disable-next-line:no-console
console.warn("Failed to save preference in markAsSeen", e);
}
}
export function markAsUnSeen<T>(seenIdsObs: Observable<T[] | undefined>, itemId: T) {
const seenIds = seenIdsObs.get() || [];
try {
if (seenIds.includes(itemId)) {
const seen = new Set(seenIds);
seen.delete(itemId);
seenIdsObs.set([...seen].sort());
}
} catch (e) {
// tslint:disable-next-line:no-console
console.warn("Failed to save preference in markAsUnSeen", e);
}
}