forked from comixed/comixed
/
task-audit-log.adaptor.ts
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/
task-audit-log.adaptor.ts
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/*
* ComiXed - A digital comic book library management application.
* Copyright (C) 2020, The ComiXed Project
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses>
*/
import {Injectable} from '@angular/core';
import {LoggerService} from '@angular-ru/logger';
import {Store} from '@ngrx/store';
import {AppState} from 'app/backend-status';
import {BehaviorSubject, Observable} from 'rxjs';
import {TaskAuditLogEntry} from 'app/backend-status/models/task-audit-log-entry';
import {GetTaskAuditLogEntries} from 'app/backend-status/actions/task-audit-log.actions';
import {TASK_AUDIT_LOG_FEATURE_KEY, TaskAuditLogState} from 'app/backend-status/reducers/task-audit-log.reducer';
import {filter} from 'rxjs/operators';
import * as _ from 'lodash';
@Injectable({
providedIn: 'root'
})
export class TaskAuditLogAdaptor {
private _lastEntryDate$ = new BehaviorSubject<number>(0);
private _fetchingEntries$ = new BehaviorSubject<boolean>(false);
private _entries$ = new BehaviorSubject<TaskAuditLogEntry[]>([]);
constructor(private logger: LoggerService, private store: Store<AppState>) {
this.store
.select(TASK_AUDIT_LOG_FEATURE_KEY)
.pipe(filter(state => !!state))
.subscribe((state: TaskAuditLogState) => {
this.logger.debug('task audit log state changed:', state);
if (!_.isEqual(this._lastEntryDate$.getValue(), state.lastEntryDate)) {
this._lastEntryDate$.next(state.lastEntryDate);
}
if (this._fetchingEntries$.getValue() !== state.fetchingEntries) {
this._fetchingEntries$.next(state.fetchingEntries);
}
if (!_.isEqual(this._entries$.getValue(), state.entries)) {
this._entries$.next(state.entries);
}
});
}
getEntries(): void {
this.logger.debug(
'getting task audit log entries:',
this._lastEntryDate$.getValue()
);
this.store.dispatch(
new GetTaskAuditLogEntries({cutoff: this._lastEntryDate$.getValue()})
);
}
get lastEntryDate(): number {
return this._lastEntryDate$.getValue();
}
get fetchingEntries$(): Observable<boolean> {
return this._fetchingEntries$.asObservable();
}
get entries$(): Observable<TaskAuditLogEntry[]> {
return this._entries$.asObservable();
}
}