import { inject, Injectable } from '@angular/core';
import { HttpClient, HttpParams } from '@angular/common/http';
import { Observable } from 'rxjs';
import { environment } from '../../environments/environment';

export interface IntervalData {
  timestamp: string;
  consumptionKwh: number;
  communityFeedInKwh: number;
  coveredKwh: number;
  coveragePercent: number;
}

export interface Summary {
  totalConsumptionKwh: number;
  totalCoveredKwh: number;
  totalCommunityFeedInKwh: number;
  averageCoveragePercent: number;
}

export interface ConsumptionDashboardResponse {
  meteringPointId: string;
  atNumber: string;
  energyCommunityId: string | null;
  communityName: string | null;
  from: string;
  to: string;
  granularity: 'DAILY' | 'HOURLY';
  data: IntervalData[];
  summary: Summary;
}

@Injectable({ providedIn: 'root' })
export class ConsumptionService {
  private http = inject(HttpClient);
  private apiUrl = `${environment.apiUrl}/api/community/consumption`;

  getDashboard(
    meteringPointId: string,
    from: string,
    to: string
  ): Observable<ConsumptionDashboardResponse> {
    const params = new HttpParams()
      .set('from', from)
      .set('to', to);

    return this.http.get<ConsumptionDashboardResponse>(
      `${this.apiUrl}/${meteringPointId}/dashboard`,
      { params }
    );
  }
}