import { Injectable } from '@angular/core';

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

import { ProtocolService } from '@ucap-webmessenger/protocol';

import {
  SVC_TYPE_BUDDY,
  SSVC_TYPE_BUDDY_ADD_REQ,
  SSVC_TYPE_BUDDY_DEL_REQ,
  SSVC_TYPE_BUDDY_UPD_REQ
} from '../types/service';

import {
  BuddyAddRequest,
  encodeBuddyAdd,
  decodeBuddyAdd
} from '../models/buddy-add';
import {
  BuddyDelRequest,
  encodeBuddyDel,
  decodeBuddyDel
} from '../models/buddy-del';
import {
  BuddyUpdateRequest,
  decodeBuddyUpdate,
  encodeBuddyUpdate
} from '../models/buddy-update';

@Injectable({
  providedIn: 'root'
})
export class BuddyProtocolService {
  constructor(private protocolService: ProtocolService) {}

  public buddyAdd(req: BuddyAddRequest): Observable<BuddyAddRequest> {
    return this.protocolService
      .call(SVC_TYPE_BUDDY, SSVC_TYPE_BUDDY_ADD_REQ, ...encodeBuddyAdd(req))
      .pipe(map(res => decodeBuddyAdd(res)));
  }

  public buddyDel(req: BuddyDelRequest): Observable<BuddyDelRequest> {
    return this.protocolService
      .call(SVC_TYPE_BUDDY, SSVC_TYPE_BUDDY_DEL_REQ, ...encodeBuddyDel(req))
      .pipe(map(res => decodeBuddyDel(res)));
  }

  public buddyUpdate(req: BuddyUpdateRequest): Observable<BuddyUpdateRequest> {
    return this.protocolService
      .call(SVC_TYPE_BUDDY, SSVC_TYPE_BUDDY_UPD_REQ, ...encodeBuddyUpdate(req))
      .pipe(map(res => decodeBuddyUpdate(res)));
  }
}