import { Component, ViewChild, OnInit } from '@angular/core';
import { ActivatedRoute, Router } from "@angular/router";
import { HelpContentService } from "../../services/help-content.service";
import { FormGroup } from "@angular/forms";
import { ModalFormComponent } from "../modal-form.component";
import { DeleteConfirmationDialogComponent } from "../delete-confirmation-dialog.component";
import { EntityFormComponent } from "./entity-form.component";
import { CheckEntity, Entity } from "../../domain/entity";
import { Community } from "../../domain/community";
import { EnvProperties } from '../../openaireLibrary/utils/properties/env-properties';
import {Session} from '../../openaireLibrary/login/utils/helper.class';
import {LoginErrorCodes} from '../../openaireLibrary/login/utils/guardHelper.class';

@Component({
    selector: 'entities',
    templateUrl: './entities.component.html',
})

export class EntitiesComponent implements OnInit {

    // @ViewChild(ModalFormComponent)
    // @ViewChild('saveModal')
    // public modal:ModalFormComponent;
    //
    // @ViewChild('updateModal')
    // public updateModal:ModalFormComponent;
    @ViewChild('AlertModalSaveEntity') alertModalSaveEntity;
    @ViewChild('AlertModalUpdateEntity') alertModalUpdateEntity;
    @ViewChild('AlertModalDeleteEntities') alertModalDeleteEntities;
    private selectedEntities: string[] = [];

    @ViewChild(EntityFormComponent)
    public formComponent : EntityFormComponent;

    public checkboxes : CheckEntity[] = [];

    public entities : Entity[] = [];

    public formGroup : FormGroup;

    private searchText : RegExp = new RegExp('');
    public  keyword: string = "";

    public communities: Community[] = [];
    public selectedCommunityPid: string;

    @ViewChild('AlertModalRelatedPages') alertModalRelatedPages;

    public toggleIds: string[];
    public toggleStatus: boolean;
    public properties:EnvProperties = null;

    public showLoading: boolean = true;
    public errorMessage: string = '';
    public updateErrorMessage: string = '';
    public modalErrorMessage: string = '';
    public isPortalAdministrator = null;
    ngOnInit() {
      this.formGroup = this.formComponent.form;
      this.route.data
        .subscribe((data: { envSpecific: EnvProperties }) => {
           this.properties = data.envSpecific;

           this.route.queryParams.subscribe(params => {
             this.selectedCommunityPid = params['communityId'];
             this.applyCommunityFilter(this.selectedCommunityPid);
             this.isPortalAdministrator = Session.isPortalAdministrator();
           });
      });

    }

    constructor(private route: ActivatedRoute, private _router: Router, private _helpContentService: HelpContentService) {}
    getEntities(community_pid: string) {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.showLoading = true;
        this.updateErrorMessage = "";
        this.errorMessage = "";

        this._helpContentService.getCommunityEntities(community_pid, this.properties.adminToolsAPIURL).subscribe(
            entities => {
                this.entities = entities;
                this.checkboxes = [];

                let self = this;
                entities.forEach(_ => {
                    self.checkboxes.push(<CheckEntity>{entity : _, checked : false});
                });

                this.showLoading = false;
        },
        error => this.handleError('System error retrieving entities', error));
      }
    }

    // public showModal():void {
    //     this.modal.showModal();
    // }

    public toggleCheckBoxes(event) {
        this.checkboxes.forEach(_ => _.checked = event.target.checked);
    }

    public applyCheck(flag : boolean) {
      console.info("applyCheck "+flag);
        this.checkboxes.forEach(_ => _.checked = flag);
    }

    public getSelectedEntities() : string[] {
        return this.checkboxes.filter(entity => entity.checked == true).map(checkedEntity => checkedEntity.entity).map(res => res._id);
    }

    private deleteEntitiesFromArray(ids : string[]) : void {
        for(let id of ids) {
            let i = this.checkboxes.findIndex(_ => _.entity._id == id);
            this.checkboxes.splice(i, 1);
        }
    }

    public confirmDeleteEntity(id : string) {
        //this.deleteConfirmationModal.ids = [id];
        //this.deleteConfirmationModal.showModal();
        this.selectedEntities = [id];
        this.confirmDeleteEntitiesModalOpen();
    }

    public confirmDeleteSelectedEntities() {
        //this.deleteConfirmationModal.ids = this.getSelectedEntities();
        //this.deleteConfirmationModal.showModal();
        this.selectedEntities = this.getSelectedEntities();
        this.confirmDeleteEntitiesModalOpen();
    }

    private confirmDeleteEntitiesModalOpen() {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.alertModalDeleteEntities.cancelButton = true;
        this.alertModalDeleteEntities.okButton = true;
        this.alertModalDeleteEntities.alertTitle = "Delete Confirmation";
        this.alertModalDeleteEntities.message = "Are you sure you want to delete the selected entity(-ies)?";
        this.alertModalDeleteEntities.okButtonText = "Yes";
        this.alertModalDeleteEntities.open();
      }
    }

    public confirmedDeleteEntities(data: any) {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.showLoading = true;
        this.updateErrorMessage = "";

        this._helpContentService.deleteEntities(this.selectedEntities, this.properties.adminToolsAPIURL).subscribe(
            _ => {
              this.deleteEntitiesFromArray(this.selectedEntities);
              this.showLoading = false;
            },
            error => this.handleUpdateError('System error deleting the selected entities', error)
        );
      }
    }

    public editEntity(i : number) {
        let entity : Entity = this.checkboxes[i].entity;
        this.formGroup.patchValue(entity);
        //this.updateModal.showModal();
        this.modalErrorMessage = "";
        this.entitiesModalOpen(this.alertModalUpdateEntity, "Update", "Update Entity");
    }

    public newEntity() {
        this.formComponent.reset();
        this.modalErrorMessage = "";
        this.entitiesModalOpen(this.alertModalSaveEntity, "Save", "Add a new Entity");
    }

    private entitiesModalOpen(modal: any, title: string, yesBtn: string) {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        modal.cancelButton = true;
        modal.okButton = true;
        modal.alertTitle = title;
        modal.okButtonText = yesBtn;
        modal.open();
      }
    }

    public entitySaveConfirmed(data: any) {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        if(!this.formGroup.valid) {
          this.entitiesModalOpen(this.alertModalSaveEntity, "Save", "Add a new Entity");
          this.modalErrorMessage = "Please fill in all required fields marked with *";
        } else {
          this.modalErrorMessage = "";
          this._helpContentService.saveEntity(<Entity> this.formGroup.value, this.properties.adminToolsAPIURL).subscribe(
              entity => {
                this.entitySavedSuccessfully(entity);
              },
              error => this.handleUpdateError("System error creating entity", error)
          );
        }
      }
    }

    public entityUpdateConfirmed(data: any) {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        if(!this.formGroup.valid) {
          this.entitiesModalOpen(this.alertModalUpdateEntity, "Update", "Update Entity");
          this.modalErrorMessage = "Please fill in all required fields marked with *";
        } else {
          this._helpContentService.updateEntity(<Entity> this.formGroup.value, this.properties.adminToolsAPIURL).subscribe(
              entity => {
                this.entityUpdatedSuccessfully(entity);
              },
              error => this.handleUpdateError("System error updating entity", error)
          );
        }
      }
    }

    public entitySavedSuccessfully(entity: Entity) {
        this.checkboxes.push(<CheckEntity>{entity : entity, checked : false});
        this.applyCheck(false);
    }

    public entityUpdatedSuccessfully(entity : Entity) {
        this.checkboxes.find(checkItem => checkItem.entity._id==entity._id).entity = entity;
        this.applyCheck(false);
    }

    public filterBySearch(text : string) {
        this.searchText = new RegExp(text,'i');
        this.applyFilter();
    }

    public applyFilter() {
        this.checkboxes = [];
        this.entities.filter(item => this.filterEntities(item)).forEach(
            _ => this.checkboxes.push(<CheckEntity>{entity: _, checked: false})
        );
    }

    public filterEntities(entity : Entity) : boolean {
        let textFlag = this.searchText.toString() == '' || (entity.name).match(this.searchText) != null;
        return textFlag;
    }

    handleError(message: string, error) {
        this.errorMessage = message;
        console.log('Server responded: ' + error);

        this.showLoading = false;
    }

    handleUpdateError(message: string, error) {
        if(error == null) {
            this.formComponent.reset();
        } else {
          this.updateErrorMessage = message;
          console.log('Server responded: ' +error);
        }

        this.showLoading = false;
    }

    public applyCommunityFilter(community_pid: string) {
        this.getEntities(community_pid);
    }

    public toggleEntities(status : boolean, ids : string[]) {
        //this.okModal.showModal();
        this.toggleIds = ids;
        this.toggleStatus = status;
        this.confirmRelatedPagesModalOpen();
    }

    private confirmRelatedPagesModalOpen() {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.alertModalRelatedPages.cancelButton = true;
        this.alertModalRelatedPages.okButton = true;
        this.alertModalRelatedPages.alertTitle = "Warning";
        this.alertModalRelatedPages.message = "This action will affect all search pages related to this entity! Pages' status will change to entity's status! Do you want to continue?";
        this.alertModalRelatedPages.okButtonText = "Yes";
        this.alertModalRelatedPages.open();
      }
    }

    public continueToggling(event: any) {
      if(!Session.isLoggedIn()){
        console.info(this._router.url);
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.showLoading = true;
        this.updateErrorMessage = "";

        this._helpContentService.toggleEntities(this.selectedCommunityPid,this.toggleIds,this.toggleStatus, this.properties.adminToolsAPIURL).subscribe(
            () => {
              for(let id of this.toggleIds) {
                let i = this.checkboxes.findIndex(_ => _.entity._id == id);
                this.checkboxes[i].entity.isEnabled=this.toggleStatus;
              }
              this.applyCheck(false);
              this.showLoading = false;
            },
            error => this.handleUpdateError('System error changing the status of the selected entity(-ies)', error)
        );
      }
    }

  }