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

import { Filament } from '../models/filament.model';

/**
 * API base URL — matches the Extrudex backend default.
 * TODO: Move to environment config when multi-environment support is added.
 */
const API_BASE_URL = '/api';

/**
 * Service for CRUD operations on filament spools.
 * Communicates with the Extrudex backend SpoolsController.
 */
@Injectable({ providedIn: 'root' })
export class FilamentService {
  private readonly http = inject(HttpClient);

  /**
   * Fetch all filament spools from the backend.
   * GET /api/spools
   */
  getFilaments(): Observable<Filament[]> {
    return this.http.get<Filament[]>(`${API_BASE_URL}/spools`);
  }

  /**
   * Soft-delete a filament spool by ID.
   * DELETE /api/spools/{id}
   * Returns 204 No Content on success.
   */
  deleteFilament(id: string): Observable<void> {
    return this.http.delete<void>(`${API_BASE_URL}/spools/${id}`);
  }
}