import {Component, ViewChild, Input} from '@angular/core';
import {Location} from '@angular/common';
import {Observable}       from 'rxjs';
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 {ErrorMessagesComponent}    from '../../utils/errorMessages.component';
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 = "";

  private errorCodes: ErrorCodes;
  private errorMessages: ErrorMessagesComponent;

  @Input() showSaveResetButtons: boolean = true;

  constructor (private _mailPrefsService: MailPrefsService, private route: ActivatedRoute, private _router:Router, private location: Location) {
    this.errorCodes = new ErrorCodes();
    this.errorMessages = new ErrorMessagesComponent();
    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  = ConnectHelper.getCommunityFromDomain(this.properties.domain);
          if(!this.communityId) {
            this.communityId = params['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);
            this.handleError("Error getting user email preferences for community with id: "+this.communityId, err);
          }
        );
      } else {
        this.preferencesFor = "project";
        this._mailPrefsService.getUserEmailPreferencesForOpenaire(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.notifications = this.initialNotifications.map(x => Object.assign({}, x));
              //this.notifications = this.initialNotifications;

              this.status = this.errorCodes.DONE;
            }
          },
          err => {
            //console.info(err);
            this.handleErrors(err);
            this.handleError("Error getting user email preferences for openaire", err);
          }
        );
      }
    }
  }

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

  changeFrequency(index: number) {
    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.savedMessage = "";
      this.status = this.errorCodes.DONE;
      if(this.initialNotifications[index].frequency != this.notifications[index].frequency) {
        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 = "";

          this._mailPrefsService.saveUserEmailPreferences(this.notifications[index], this.properties.claimsAPIURL).subscribe(
            data => {
              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.handleError("Error saving user email preferences: "+JSON.stringify(this.notifications[index]), err);
              this.status = this.errorCodes.NOT_SAVED;
            }
          );
        }
        else {
          /*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(!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(this.notifications.length > 0 && this.initialNotifications.length > 0) {
        this.status = this.errorCodes.LOADING;
        this.savedMessage = "";
        this.notifications[index] = JSON.parse(JSON.stringify( 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;
    }
    this.status = this.errorMessages.getErrorCode(code);
  }

  private handleError(message: string, error) {
    console.error("User mail notification preferences Page (for claims): "+message, error);
  }


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