/**
 * Copyright since 2025 Mifos Initiative
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

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

/**
 * Shared clearing services used across CTS and NACH — return-reason-code master, settlement-batch posting,
 * and reconciliation.
 */
@Injectable({
  providedIn: 'root'
})
export class ClearingService {
  private http = inject(HttpClient);

  // ----- Return reason codes -----

  /** appliesTo: 'CTS' | 'NACH'. Returns a raw array of reason codes. */
  getReturnReasonCodes(appliesTo: string): Observable<any> {
    return this.http.get('/clearing/return-reason-codes', {
      params: new HttpParams().set('appliesTo', appliesTo)
    });
  }

  // ----- Settlement batches -----

  /** Server-side paginated — returns { pageItems, totalFilteredRecords }. */
  getSettlementBatches(clearingType?: string, status?: string, offset = 0, limit = 20): Observable<any> {
    let params = new HttpParams().set('offset', offset).set('limit', limit);
    if (clearingType) params = params.set('clearingType', clearingType);
    if (status) params = params.set('status', status);
    return this.http.get('/clearing/settlement-batches', { params });
  }

  getSettlementBatch(id: string | number): Observable<any> {
    return this.http.get(`/clearing/settlement-batches/${id}`);
  }

  /** payload: { clearingType, sourceBatchId }. */
  prepareSettlement(payload: any): Observable<any> {
    return this.http.post('/clearing/settlement-batches', payload);
  }

  postSettlement(id: string | number): Observable<any> {
    return this.http.post(
      `/clearing/settlement-batches/${id}`,
      {},
      { params: new HttpParams().set('command', 'post') }
    );
  }

  rejectSettlement(id: string | number, payload: any): Observable<any> {
    return this.http.post(`/clearing/settlement-batches/${id}`, payload, {
      params: new HttpParams().set('command', 'reject')
    });
  }

  // ----- Reconciliations -----

  getReconciliations(clearingType?: string, offset = 0, limit = 20): Observable<any> {
    let params = new HttpParams().set('offset', offset).set('limit', limit);
    if (clearingType) params = params.set('clearingType', clearingType);
    return this.http.get('/clearing/reconciliations', { params });
  }

  runReconciliation(payload: any): Observable<any> {
    return this.http.post('/clearing/reconciliations', payload);
  }
}