blob: 97f90fa4a6febe917bd28412be715dd9b0ec297a [file] [log] [blame]
/**
* @license
* Copyright 2021 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import {from, of, Observable} from 'rxjs';
import {filter, switchMap} from 'rxjs/operators';
import {
DiffPreferencesInfo as DiffPreferencesInfoAPI,
DiffViewMode,
} from '../../api/diff';
import {
AccountCapabilityInfo,
AccountDetailInfo,
EditPreferencesInfo,
PreferencesInfo,
} from '../../types/common';
import {
createDefaultPreferences,
createDefaultDiffPrefs,
createDefaultEditPrefs,
AppTheme,
} from '../../constants/constants';
import {RestApiService} from '../../services/gr-rest-api/gr-rest-api';
import {DiffPreferencesInfo} from '../../types/diff';
import {select} from '../../utils/observable-util';
import {define} from '../dependency';
import {Model} from '../model';
import {isDefined} from '../../types/types';
export interface UserState {
/**
* Keeps being defined even when credentials have expired.
*
* `undefined` can mean that the app is still starting up and we have not
* tried loading an account object yet. If you want to wait until the
* `account` is known, then use `accountLoaded` below.
*/
account?: AccountDetailInfo;
/**
* Starts as `false` and switches to `true` after the first `getAccount` call.
* A common use case for this is to wait with loading or doing something until
* we know whether the user is logged in or not, see `loadedAccount$` below.
*
* This value cannot change back to `false` once it has become `true`.
*
* This value does *not* indicate whether the user is logged in or whether an
* `account` object is available. If the first `getAccount()` call returns
* `undefined`, then `accountLoaded` still becomes true, even if `account`
* stays `undefined`.
*/
accountLoaded: boolean;
preferences?: PreferencesInfo;
diffPreferences?: DiffPreferencesInfo;
editPreferences?: EditPreferencesInfo;
capabilities?: AccountCapabilityInfo;
}
export const userModelToken = define<UserModel>('user-model');
export class UserModel extends Model<UserState> {
/**
* Note that the initially emitted `undefined` value can mean "not loaded
* the account into object yet" or "user is not logged in". Consider using
* `loadedAccount$` below.
*
* TODO: Maybe consider changing all usages to `loadedAccount$`.
*/
readonly account$: Observable<AccountDetailInfo | undefined> = select(
this.state$,
userState => userState.account
);
/**
* Only emits once we have tried to actually load the account. Note that
* this does not initially emit a value.
*
* So if this emits `undefined`, then you actually know that the user is not
* logged in. And for logged in users you will never get an initial
* `undefined` emission.
*/
readonly loadedAccount$: Observable<AccountDetailInfo | undefined> = select(
this.state$.pipe(filter(s => s.accountLoaded)),
userState => userState.account
);
/** Note that this may still be true, even if credentials have expired. */
readonly loggedIn$: Observable<boolean> = select(
this.account$,
account => !!account
);
readonly capabilities$: Observable<AccountCapabilityInfo | undefined> =
select(this.state$, userState => userState.capabilities);
readonly isAdmin$: Observable<boolean> = select(
this.capabilities$,
capabilities => capabilities?.administrateServer ?? false
);
readonly preferences$: Observable<PreferencesInfo> = select(
this.state$,
userState => userState.preferences
).pipe(filter(isDefined));
readonly diffPreferences$: Observable<DiffPreferencesInfo> = select(
this.state$,
userState => userState.diffPreferences
).pipe(filter(isDefined));
readonly editPreferences$: Observable<EditPreferencesInfo> = select(
this.state$,
userState => userState.editPreferences
).pipe(filter(isDefined));
readonly preferenceDiffViewMode$: Observable<DiffViewMode> = select(
this.preferences$,
preference => preference.diff_view ?? DiffViewMode.SIDE_BY_SIDE
);
readonly preferenceTheme$: Observable<AppTheme> = select(
this.preferences$,
preference => preference.theme
);
readonly preferenceChangesPerPage$: Observable<number> = select(
this.preferences$,
preference => preference.changes_per_page
);
constructor(readonly restApiService: RestApiService) {
super({
accountLoaded: false,
});
this.subscriptions = [
from(this.restApiService.getAccount()).subscribe(
(account?: AccountDetailInfo) => {
this.setAccount(account);
}
),
this.loadedAccount$
.pipe(
switchMap(account => {
if (!account) return of(createDefaultPreferences());
return from(this.restApiService.getPreferences());
})
)
.subscribe((preferences?: PreferencesInfo) => {
this.setPreferences(preferences ?? createDefaultPreferences());
}),
this.loadedAccount$
.pipe(
switchMap(account => {
if (!account) return of(createDefaultDiffPrefs());
return from(this.restApiService.getDiffPreferences());
})
)
.subscribe((diffPrefs?: DiffPreferencesInfoAPI) => {
this.setDiffPreferences(diffPrefs ?? createDefaultDiffPrefs());
}),
this.loadedAccount$
.pipe(
switchMap(account => {
if (!account) return of(createDefaultEditPrefs());
return from(this.restApiService.getEditPreferences());
})
)
.subscribe((editPrefs?: EditPreferencesInfo) => {
this.setEditPreferences(editPrefs ?? createDefaultEditPrefs());
}),
this.loadedAccount$
.pipe(
switchMap(account => {
if (!account) return of(undefined);
return from(this.restApiService.getAccountCapabilities());
})
)
.subscribe((capabilities?: AccountCapabilityInfo) => {
this.setCapabilities(capabilities);
}),
];
}
updatePreferences(prefs: Partial<PreferencesInfo>) {
return this.restApiService
.savePreferences(prefs)
.then((newPrefs: PreferencesInfo | undefined) => {
if (!newPrefs) return;
this.setPreferences(newPrefs);
return newPrefs;
});
}
updateDiffPreference(diffPrefs: DiffPreferencesInfo) {
return this.restApiService
.saveDiffPreferences(diffPrefs)
.then((response: Response) =>
this.restApiService.getResponseObject(response).then(obj => {
const newPrefs = obj as unknown as DiffPreferencesInfo;
if (!newPrefs) return;
this.setDiffPreferences(newPrefs);
})
);
}
updateEditPreference(editPrefs: EditPreferencesInfo) {
return this.restApiService
.saveEditPreferences(editPrefs)
.then((response: Response) => {
this.restApiService.getResponseObject(response).then(obj => {
const newPrefs = obj as unknown as EditPreferencesInfo;
if (!newPrefs) return;
this.setEditPreferences(newPrefs);
});
});
}
getDiffPreferences() {
return this.restApiService.getDiffPreferences().then(prefs => {
if (!prefs) return;
this.setDiffPreferences(prefs);
});
}
setPreferences(preferences: PreferencesInfo) {
this.updateState({preferences});
}
setDiffPreferences(diffPreferences: DiffPreferencesInfo) {
this.updateState({diffPreferences});
}
setEditPreferences(editPreferences: EditPreferencesInfo) {
this.updateState({editPreferences});
}
setCapabilities(capabilities?: AccountCapabilityInfo) {
this.updateState({capabilities});
}
setAccount(account?: AccountDetailInfo) {
this.updateState({account, accountLoaded: true});
}
}