//Importing libraries
import { Injectable } from '@angular/core';
import { Http, Headers, Response, RequestOptions } from '@angular/http';
import { Observable } from 'rxjs';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/map';
import 'rxjs/add/observable/throw';

// Importing core classes
import * as globals from '../core/common';
import { IContactPositions } from '../core/IContactPositions';
import { ContactHistory } from '../core/contactHistory';
import { ClientDetails } from '../core/IClientDetails';
import { ICompanyDetails } from '../core/ICompanyDetails';
import { ICountry } from '../core/ICountry';
import { IState } from '../core/IState';
import { ExportImportContacts } from '../core/ExportImportContacts';

@Injectable({
  providedIn: 'root'
})
export class ContactService {

  //API calls
  private UpdateAvatarUrl = globals.serverBase + '/api/ContactDetails/UpdateAvatar';
  private GetPositionHistoriesUrl = globals.serverBase + '/api/ContactDetails/GetContactPositionHistoryByIds';
  private UpdateContactPositionurl = globals.serverBase + '/api/ContactDetails/UpdateContactPositionsById';
  private GetHistoryRecordsUrl = globals.serverBase + '/api/ContactDetails/GetAllContactHistoryList';

  private GetAllClientsByStaffId = globals.serverBase + '/api/ContactDetails/GetClientList';
  private GetAllCompanyDetailsByIDUrl = globals.serverBase + '/api/ContactDetails/GetAllCompanyDetailsByID';
  private GetAllStatesUrl = globals.serverBase + '/api/ContactDetails/GetAllStates';
  private InsertNewClientUrl = globals.serverBase + '/api/ContactDetails/SaveClient';
  private GetAllCountriesUrl = globals.serverBase + '/api/ContactDetails/GetAllCountries';
  private GetExportContactsUrl = globals.serverBase + '/api/ContactDetails/GetExportContacts';
  private UpdateContactUrl = globals.serverBase + '/api/ContactDetails/UpdateContact';

  headers: any;

  constructor(private http: Http) {

  }

  // Update Avatar
  UpdateAvatar(frmData: any, contactId: number) {    
    let urlSearchParams = new URLSearchParams();
    urlSearchParams.append('contactId', contactId.toString());
    let body = urlSearchParams.toString()

    return this.http.post(this.UpdateAvatarUrl, frmData, { params: body })
      .map((response: Response) => response.json())
      .catch(this.handleError);
  }

  //Getting the contact position history
  GetPositionHistories(contactPositionsId:number){
    let urlSearchParams = new URLSearchParams();
    urlSearchParams.append('contactPositionsId', contactPositionsId.toString());
    let body = urlSearchParams.toString()

    return this.http.get(this.GetPositionHistoriesUrl,{ params: body })
      .map((response: Response) => <IContactPositions[]>response.json())
      .catch(this.handleError);
  }

  //Updating the company position of the contact
  UpdateContactPosition(positionId:number, position:string, loginStaffId:number){
    let urlSearchParams = new URLSearchParams();
    urlSearchParams.append('positionId', positionId.toString());
    urlSearchParams.append('loginStaffId', loginStaffId.toString());
    urlSearchParams.append('position', position);
    let body = urlSearchParams.toString()

    return this.http.get(this.UpdateContactPositionurl,{ params: body })
      .map((response: Response) => <boolean>response.json())
      .catch(this.handleError);
  }

  //Getting the history for contact records
  GetHistoryRecords(contactId:number, historyType:string){
    let urlSearchParams = new URLSearchParams();
    urlSearchParams.append('contactId', contactId.toString());
    urlSearchParams.append('historyType', historyType);
    let body = urlSearchParams.toString()


    return this.http.get(this.GetHistoryRecordsUrl,{ params: body })
    .map((response: Response) => <ContactHistory[]>response.json())
    .catch(this.handleError);
  }


  
  // Get All Client Details by id
  getAllClientsByStaffId(staffId: any) {
    const urlSearchParams = new URLSearchParams();
    urlSearchParams.append('staffId', staffId.toString());
    const body = urlSearchParams.toString();

    return this.http.get(this.GetAllClientsByStaffId, { params: body })
      .map((response: Response) => response.json() as ClientDetails[])
      .catch(this.handleError);
  }

  getAllCompanyDetailsByID(companyId: number) {
    const urlSearchParams = new URLSearchParams();
    urlSearchParams.append('companyId', companyId.toString());
    const body = urlSearchParams.toString();


    return this.http.get(this.GetAllCompanyDetailsByIDUrl, { params: body })
      .map((response: Response) => response.json() as ICompanyDetails)
      .catch(this.handleError);
  }

  getAllStates(countryID: number) {
    const urlSearchParams = new URLSearchParams();
    urlSearchParams.append('countryID', countryID.toString());
    const body = urlSearchParams.toString();

    return this.http.get(this.GetAllStatesUrl, { params: body })
      .map((response: Response) => response.json() as IState[])
      .catch(this.handleError);
  }


  // Save contact
  insertNewClientDetails(companyDetails: ICompanyDetails) {
    return this.http.post(this.InsertNewClientUrl, companyDetails)
      .map((response: Response) => response.json() as boolean)
      .catch(this.handleError);
  }

  getAllCountries() {
    return this.http.get(this.GetAllCountriesUrl)
      .map((response: Response) => response.json() as ICountry[])
      .catch(this.handleError);
  }

  // Get Export contacts
  GetExportContacts(contactIdList: string[], companyID:number) {
    let urlSearchParams = new URLSearchParams();
    urlSearchParams.append('companyID', companyID.toString());
    let body = urlSearchParams.toString()

    return this.http.post(this.GetExportContactsUrl, contactIdList, { params: body })
      .map((response: Response) => response.json() as ExportImportContacts[])
      .catch(this.handleError);
  }

  // Update Contact
  UpdateContact(frmData: any) {
    return this.http.post(this.UpdateContactUrl, frmData)
      .map((response: Response) => response.json())
      .catch(this.handleError);
  }


  //----------- Common methods------------------//
  //The function of handling the error
  private handleError(error: Response) {
    //console.log("Error in contact service");
    //console.log(error);
    return Observable.throw('Server error');
  }

  errorHandler(error: Response) {
   // console.log(error);
  }
}