import {Component, ViewChild, Input} from '@angular/core';
import {Location} from '@angular/common';
import {Observable}       from 'rxjs/Observable';
import {ActivatedRoute, Router} from '@angular/router';
import {ModalLoading} from '../../utils/modal/loading.component';
import {AlertModal} from '../../utils/modal/alert';
import {Session} from '../../login/utils/helper.class';
import {EnvProperties} from '../../utils/properties/env-properties';
import {MailPrefsService} from './mailPrefs.service';
import {ConnectHelper} from '../connectHelper';
import {ErrorCodes} from '../../utils/properties/errorCodes';
import {LoginErrorCodes} from '../../login/utils/guardHelper.class';

declare var UIkit: any;

@Component({
  selector: 'mailPrefs',
  templateUrl: 'mailPrefs.component.html',
  providers:[MailPrefsService]

})
export class MailPrefsComponent {
  properties:EnvProperties;
  sub: any;
  public communityId: string;
  public preferencesFor: string = "community";
  public status: number;

  public notifications = [];
  public initialNotifications = [];
  public prefsChanged = {};

  //public showForbiddenMessage:boolean = false;
  public userValidMessage:string = "";
  public savedMessage: string = "";

  public fetchId:string;

  private errorCodes: ErrorCodes;

  @Input() showSaveResetButtons: boolean = true;

  constructor (private _mailPrefsService: MailPrefsService, private route: ActivatedRoute, private _router:Router, private location: Location) {
    this.errorCodes = new ErrorCodes();
    this.status = this.errorCodes.LOADING;
  }

  ngOnInit() {
    this.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {
        this.properties = data.envSpecific;
    });

    this.sub = this.route.queryParams.subscribe(params => {
      this.communityId = params['communityId'];

      if(!this.communityId){
        this.communityId  = ConnectHelper.getCommunityFromDomain(document.location.hostname);
      }

      this.fetchId = Session.getUserEmail();
      console.info("email: "+this.fetchId);
      console.info("communityId: " + this.communityId);

      this.getEmailPreferences();

    });
  }

  getEmailPreferences() {
    if(!Session.isLoggedIn()){
      this.userValidMessage = "User session has expired. Please login again.";
      if(this.showSaveResetButtons) {
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      }
    }else{
      this.status = this.errorCodes.LOADING;
      this.savedMessage = "";

      if(this.communityId && this.communityId != "openaire") {
        this.preferencesFor = "community";
        this._mailPrefsService.getUserEmailPreferencesForCommunity(this.communityId, this.properties.claimsAPIURL).subscribe(
          data => {
            if(data.code == "204") {
              this.status = this.errorCodes.NONE;
            } else {
              this.initialNotifications = data.data;
              this.notifications = JSON.parse(JSON.stringify( this.initialNotifications ));

              this.status = this.errorCodes.DONE;
            }
          },
          err => {
            this.handleErrors(err);
          }
        );
      } else {
        this.preferencesFor = "project";
        this._mailPrefsService.getUserEmailPreferencesForOpenaire(this.properties.claimsAPIURL).subscribe(
          data => {
            console.info("email prefs returned");

            if(data.code == "204") {
              this.status = this.errorCodes.NONE;
            } else {
              console.info(data);

              this.initialNotifications = data.data;
              this.notifications = JSON.parse(JSON.stringify( this.initialNotifications ));
              //this.notifications = this.initialNotifications.map(x => Object.assign({}, x));
              //this.notifications = this.initialNotifications;

              this.status = this.errorCodes.DONE;
            }
          },
          err => {
            //console.info(err);
            this.handleErrors(err);
          }
        );
      }
    }
  }

  changeNotify(notification: any, checked: boolean, index: number) {
    this.savedMessage = "";
    this.status = this.errorCodes.DONE;
    notification.notify = checked;
    this.prefsChanged[index] = true;
  }

  changeFrequency(value: number, index: number) {
    this.savedMessage = "";
    this.status = this.errorCodes.DONE;
    if(this.initialNotifications[index].frequency != value) {
      this.prefsChanged[index] = true;
    }
  }

  saveNotification(index: number) {
    if(this.notifications.length > 0 && this.initialNotifications.length > 0) {
      if(!Session.isLoggedIn()){
          this.userValidMessage = "User session has expired. Please login again.";
          if(this.showSaveResetButtons) {
            this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
          }
      }else{
        if(JSON.stringify(this.notifications[index]) != JSON.stringify(this.initialNotifications[index])) {

          this.status = this.errorCodes.LOADING;
          this.savedMessage = "";
          console.info("Send notification to db: ", this.notifications[index]);

          this._mailPrefsService.saveUserEmailPreferences(this.notifications[index], this.properties.claimsAPIURL).subscribe(
            data => {
              console.info("Notification saved successfully");
              this.initialNotifications[index] = JSON.parse(JSON.stringify( this.notifications[index] ));

              this.status = this.errorCodes.DONE;

              /*UIkit.notification({
                  message : '<strong>Your email preferences for '+this.notifications[index].openaireName+' have been successfully changed<strong>',
                  status  : 'success',
                  timeout : 3000,
                  pos     : 'top-center'
              });*/
              this.savedMessage = "Notification settings for claims saved!";
            },
            err => {
              console.log(err);
              this.status = this.errorCodes.NOT_SAVED;
            }
          );
        }
        else {
          console.info("Notification not changed: ", this.notifications[index]);
          /*UIkit.notification({
              message : '<strong>No changes selected for '+this.notifications[index].openaireName+' email preferences<strong>',
              status  : 'primary',
              timeout : 3000,
              pos     : 'top-center'
          });*/
          this.savedMessage = "Notification settings for claims saved!";
        }
      }
    }
  }

  restoreNotification(index: number) {
    if(this.notifications.length > 0 && this.initialNotifications.length > 0) {
      this.status = this.errorCodes.LOADING;
      this.savedMessage = "";
      console.info("Restore Notification");
      console.info(this.notifications[index]);
      this.notifications[index] = JSON.parse(JSON.stringify( this.initialNotifications[index] ));
      console.info(this.initialNotifications[index]);
      this.status = this.errorCodes.DONE;
      this.prefsChanged[index] = false;
    }
  }
/*
  prefsChanged(index: number) : boolean {
    if(this.notifications.length > 0 && this.initialNotifications.length > 0) {
      if(JSON.stringify(this.notifications[index]) != JSON.stringify(this.initialNotifications[index])) {
        return true;
      }
    }
    return false;
  }
*/
  ngOnDestroy() {
    if(this.sub) {
      this.sub.unsubscribe();
    }
  }

  handleErrors(err){
    //this.showErrorMessage = true;
    //try{
      var code = "";
      if(!err.status) {
        var error =  err.json();
        code = error.code;
      } else {
        code = err.status;
      }
      console.info(code);
      if(code == "403") {
        this.status = this.errorCodes.FORBIDDEN;
      }
      else if(code == "204") {
        this.status = this.errorCodes.NONE;
      } else if(code == "404") {
        this.status = this.errorCodes.NOT_FOUND;
      } else if(code == "500") {
        this.status = this.errorCodes.ERROR;
      } else {
        this.status = this.errorCodes.NOT_AVAILABLE;
      }


    //}catch (e) {
      //console.log("Couldn't parse answer as json")
      //this.showErrorMessage = true;
    //}
  }
}