import { Injectable, Inject } from '@angular/core';
import { HttpClient } from '@angular/common/http';

import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';

import { _MODULE_CONFIG } from '../config/token';
import { ModuleConfig } from '../config/module-config';
import { UrlConfig } from '@ucap-webmessenger/core';
import { Urls } from '../config/urls';
import {
  RetrieveRequest,
  RetrieveSendResponse,
  encodeRetrieve,
  decodeRetrieveSend
} from '../apis/retrieve-send';

@Injectable({
  providedIn: 'root'
})
export class MessageApiService {
  readonly urls: Urls;

  constructor(
    @Inject(_MODULE_CONFIG) private moduleConfig: ModuleConfig,
    private httpClient: HttpClient
  ) {
    this.urls = UrlConfig.getUrls(
      this.moduleConfig.hostConfig,
      this.moduleConfig.urls
    );
  }

  public retrieveSendMessage(
    req: RetrieveRequest
  ): Observable<RetrieveSendResponse> {
    return this.httpClient
      .post<any>(
        this.urls.retrieveSendMessageList,
        {},
        {
          params: encodeRetrieve(req)
        }
      )
      .pipe(map(res => decodeRetrieveSend(res)));
  }
}