/**
 * 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';

/** rxjs Imports */
import { Observable } from 'rxjs';

/**
 * Users service.
 */
@Injectable({
  providedIn: 'root'
})
export class UsersService {
  private http = inject(HttpClient);

  /**
   * @returns {Observable<any>} Users data
   */
  getUsers(): Observable<any> {
    return this.http.get(`/users`);
  }

  /**
   * @returns {Observable<any>} Users template data
   */
  getUsersTemplate(): Observable<any> {
    return this.http.get('/users/template');
  }

  /**
   * @param {any} user User to be created.
   * @returns {Observable<any>}
   */
  createUser(user: any): Observable<any> {
    return this.http.post('/users', user);
  }

  /**
   * @param {string} userId user ID of user.
   * @param {any} user user to be updated.
   * @returns {Observable<any>} User.
   */
  editUser(userId: string, user: any): Observable<any> {
    return this.http.put(`/users/${userId}`, user);
  }

  /**
   * @param {string} userId user ID of user.
   * @returns {Observable<any>} User.
   */
  getUser(userId: string): Observable<any> {
    return this.http.get(`/users/${userId}`);
  }

  /**
   * Change User Password
   * @param userId User Id of users
   * @param password New Password of the user
   * @returns {Observable<any>}
   */
  changePassword(userId: string, passwordObj: any) {
    return this.http.put(`/users/${userId}`, passwordObj);
  }

  /**
   * @param {string} userId user ID of user.
   * @returns {Observable<any>}
   */
  deleteUser(userId: string): Observable<any> {
    return this.http.delete(`/users/${userId}`);
  }

  /**
   * @param {any} officeId ID of office to retrieve staff from.
   * @returns {Observable<any>} Staff data.
   */
  getStaff(officeId: any): Observable<any> {
    const httpParams = new HttpParams().set('officeId', officeId.toString()).set('status', 'all');
    return this.http.get('/staff', { params: httpParams });
  }

  /**
   * @param {string} status Status filter (e.g. 'PENDING')
   * @param {string} username Username filter
   * @param {string} fromDate From date filter
   * @param {string} toDate To date filter
   * @param {number} offset Offset
   * @param {number} limit Limit
   * @returns {Observable<any>} Pending users
   */
  getPendingUsers(
    status?: string,
    username?: string,
    fromDate?: string,
    toDate?: string,
    offset: number = 0,
    limit: number = 20
  ): Observable<any> {
    let httpParams = new HttpParams().set('offset', offset.toString()).set('limit', limit.toString());
    if (status) {
      httpParams = httpParams.set('status', status);
    }
    if (username) {
      httpParams = httpParams.set('username', username);
    }
    if (fromDate) {
      httpParams = httpParams.set('fromDate', fromDate);
    }
    if (toDate) {
      httpParams = httpParams.set('toDate', toDate);
    }
    return this.http.get('/users/pending', { params: httpParams });
  }

  /**
   * @param {string | number} id Pending request ID
   * @returns {Observable<any>}
   */
  getPendingUser(id: string | number): Observable<any> {
    return this.http.get(`/users/pending/${id}`);
  }

  /**
   * @param {string | number} id Pending request ID
   * @returns {Observable<any>}
   */
  approvePendingUser(id: string | number): Observable<any> {
    return this.http.post(`/users/pending/${id}/approve`, {});
  }

  /**
   * @param {string | number} id Pending request ID
   * @param {string} reason Rejection reason
   * @returns {Observable<any>}
   */
  rejectPendingUser(id: string | number, reason: string): Observable<any> {
    return this.http.post(`/users/pending/${id}/reject`, { reason });
  }
}