/*!
 * @license
 * Copyright 2019 Alfresco Software, Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { Injectable } from '@angular/core';
import { Observable, from, throwError } from 'rxjs';
import { AlfrescoApiService, LogService } from '@alfresco/adf-core';
import {
    AuditApi,
    AuditAppPaging,
    AuditAppEntry,
    AuditApp,
    AuditBodyUpdate,
    AuditEntryPaging,
    AuditEntryEntry
} from '@alfresco/js-api';
import { catchError } from 'rxjs/operators';

@Injectable({
    providedIn: 'root'
})
export class AuditService {

    _auditApi: AuditApi;
    get auditApi(): AuditApi {
        this._auditApi = this._auditApi ?? new AuditApi(this.apiService.getInstance());
        return this._auditApi;
    }

    constructor(private apiService: AlfrescoApiService, private logService: LogService) {
    }

    getAuditApps(opts?: any): Observable<AuditAppPaging> {
        const defaultOptions = {
            skipCount: 0
        };
        const queryOptions = Object.assign({}, defaultOptions, opts);
        return from(this.auditApi.listAuditApps(queryOptions))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    getAuditApp(auditApplicationId: string, opts?: any): Observable<AuditAppEntry> {
        const defaultOptions = {
            auditApplicationId
        };
        const queryOptions = Object.assign({}, defaultOptions, opts);
        return from(this.auditApi.getAuditApp(queryOptions))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    updateAuditApp(auditApplicationId: string, auditAppBodyUpdate: boolean, opts?: any): Observable<AuditApp | any> {
        const defaultOptions = {};
        const queryOptions = Object.assign({}, defaultOptions, opts);
        return from(this.auditApi.updateAuditApp(auditApplicationId, new AuditBodyUpdate({ isEnabled: auditAppBodyUpdate }), queryOptions))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    getAuditEntries(auditApplicationId: string, opts?: any): Observable<AuditEntryPaging> {
        const defaultOptions = {
            skipCount: 0,
            maxItems: 100
        };
        const queryOptions = Object.assign({}, defaultOptions, opts);
        return from(this.auditApi.listAuditEntriesForAuditApp(auditApplicationId, queryOptions))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    getAuditEntry(auditApplicationId: string, auditEntryId: string, opts?: any): Observable<AuditEntryEntry> {
        const defaultOptions = {};
        const queryOptions = Object.assign({}, defaultOptions, opts);
        return from(this.auditApi.getAuditEntry(auditApplicationId, auditEntryId, queryOptions))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    getAuditEntriesForNode(nodeId: string, opts?: any): Observable<AuditEntryPaging> {
        const defaultOptions = {
            nodeId
        };
        const queryOptions = Object.assign({}, defaultOptions, opts);
        return from(this.auditApi.listAuditEntriesForNode(queryOptions))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    deleteAuditEntries(auditApplicationId: string, where: string): Observable<any> {
        return from(this.auditApi.deleteAuditEntriesForAuditApp(auditApplicationId, where))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    deleteAuditEntry(auditApplicationId: string, auditEntryId: string): Observable<any> {
        return from(this.auditApi.deleteAuditEntry(auditApplicationId, auditEntryId))
            .pipe(
                catchError((err: any) => this.handleError(err))
            );
    }

    private handleError(error: any): any {
        this.logService.error(error);
        return throwError(error || 'Server error');
    }
}