import { Injectable } from '@angular/core';
import { HttpClient, HttpParams, HttpResponse } from '@angular/common/http';
import { Observable } from 'rxjs';

import { EntityAuditEntityChoice, EntityAuditEvent } from './entity-audit-event.model';

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

    constructor(private http: HttpClient) { }

    getAllAudited(): Observable<EntityAuditEntityChoice[]> {
        return this.http.get<EntityAuditEntityChoice[]>('api/audits/entity/all');
    }

    findByEntity(entity: string, limit: number): Observable<HttpResponse<EntityAuditEvent[]>> {
        const params: HttpParams = new HttpParams()
            .append('entityType', entity)
            .append('limit', limit.toString());

        return this.http.get<EntityAuditEvent[]>('api/audits/entity/changes', {
            params,
            observe: 'response'
        });
    }

    getPrevVersion(qualifiedName: string, entityId: string, commitVersion: number): Observable<HttpResponse<EntityAuditEvent>> {
        const params: HttpParams = new HttpParams()
            .append('qualifiedName', qualifiedName)
            .append('entityId', entityId)
            .append('commitVersion', commitVersion.toString());

        return this.http.get<EntityAuditEvent>('api/audits/entity/changes/version/previous', {
            params,
            observe: 'response'
        });
    }
}