/**
 * Created by stefania on 7/13/17.
 */
import { Component, ViewChild, OnInit, ElementRef } from '@angular/core';
import { ActivatedRoute, Router } from "@angular/router";
import { HelpContentService } from "../../services/help-content.service";
import { FormGroup } from "@angular/forms";
import { PageFormComponent } from "./page-form.component";
import { CheckPage, Page } from "../../domain/page";
import { Community } from "../../domain/community";
import { Entity } from "../../domain/entity";
import { EnvProperties } from '../../openaireLibrary/utils/properties/env-properties';
import {Session} from '../../openaireLibrary/login/utils/helper.class';
import {LoginErrorCodes} from '../../openaireLibrary/login/utils/guardHelper.class';
import {HelperFunctions} from "../../openaireLibrary/utils/HelperFunctions.class";

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

export class PagesComponent implements OnInit {

    @ViewChild('AlertModalSavePage') alertModalSavePage;
    @ViewChild('AlertModalUpdatePage') alertModalUpdatePage;
    @ViewChild('AlertModalDeletePages') alertModalDeletePages;
    private selectedPages: string[] = [];

    @ViewChild(PageFormComponent)
    public formComponent : PageFormComponent;

    public checkboxes : CheckPage[] = [];

    public pages : Page[] = [];
    public pageWithDivIds: string[] = [];

    //public errorMessage: string;

    public formGroup : FormGroup;

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

    public communities: Community[] = [];

    public selectedCommunityPid: string;

    public pagesType: string;
    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 => {
               HelperFunctions.scroll();

               this.pagesType = "";
               if(params['type']) {
                 this.pagesType = params['type'];
               }

               this.keyword = "";

               this.selectedCommunityPid = params['communityId'];
               this.applyCommunityFilter(this.selectedCommunityPid);
               this.isPortalAdministrator = Session.isPortalAdministrator();

               //this.getCommunities();
             });
        });
    }

    constructor(private element: ElementRef, private route: ActivatedRoute, private _router: Router, private _helpContentService: HelpContentService) {}

    getPages(community_pid: string) {
      if(!Session.isLoggedIn()){
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.showLoading = true;
        this.updateErrorMessage = "";
        this.errorMessage = "";

        this.pageWithDivIds = [];

        let parameters = "";
        if(this.pagesType) {
          parameters = "?page_type="+this.pagesType;
        }
        this._helpContentService.getCommunityPages(community_pid, parameters, this.properties.adminToolsAPIURL).subscribe(
            pages => {
              this.pagesReturned(pages);
              if(!this.pagesType || this.pagesType == "link") {
                this.getPagesWithDivIds(community_pid);
              } else {
                this.showLoading = false;
              }
            },
            error => this.handleError('System error retrieving pages', error)
        );
      }
    }

    getPagesWithDivIds(community_pid: string) {
      if(!Session.isLoggedIn()){
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this._helpContentService.getPagesWithDivIds(community_pid, this.properties.adminToolsAPIURL).subscribe(
            pages => {
              this.pageWithDivIds = pages;
              this.showLoading = false;
            },
            error => this.handleError('System error retrieving information about pages\' classes', error));
      }
    }

    pagesReturned(pages: Page[]) {
      this.pages = pages;
      this.checkboxes = [];

      if(pages) {
        pages.forEach(_ => {
          this.checkboxes.push(<CheckPage>{page : _, checked : false});
        });
      }
    }
/*
    getCommunities() {
        this._helpContentService.getCommunities(this.properties.adminToolsAPIURL).subscribe(
            communities => {
                this.communities = communities;
                this.selectedCommunityPid = this.communities[0].pid;
                this.getPages(this.selectedCommunityPid);
                this.getPagesWithDivIds(this.selectedCommunityPid);
        },
        error => this.handleError('System error retrieving communities', error));
    }
*/

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

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

    public getSelectedPages() : string[] {
        return this.checkboxes.filter(page => page.checked == true).map(checkedPage => checkedPage.page).map(res => res._id);
    }

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

    public confirmDeletePage(id : string) {
        //this.deleteConfirmationModal.ids = [id];
        //this.deleteConfirmationModal.showModal();
        this.selectedPages = [id];
        this.confirmModalOpen();
    }

    public confirmDeleteSelectedPages() {
        //this.deleteConfirmationModal.ids = this.getSelectedPages();
        //this.deleteConfirmationModal.showModal();
        this.selectedPages = this.getSelectedPages();
        this.confirmModalOpen();
    }

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

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

        this._helpContentService.deletePages(this.selectedPages, this.properties.adminToolsAPIURL).subscribe(
            _ => {
              this.deletePagesFromArray(this.selectedPages);
              this.showLoading = false;
            },
            error => this.handleUpdateError('System error deleting the selected pages', error)
        );
      }
    }

    public editPage(i : number) {
        let page : Page = this.checkboxes[i].page;
        this.formGroup.patchValue(page);
        this.formComponent.setEntities(page.entities as Entity[]);

        //console.info(this.formGroup.value);
        //this.updateModal.showModal();
        this.modalErrorMessage = "";
        this.pagesModalOpen(this.alertModalUpdatePage, "Update", "Update Page");
    }

    public newPage() {
        this.formComponent.reset();
        this.modalErrorMessage = "";
        this.pagesModalOpen(this.alertModalSavePage, "Save", "Add a new Page");
    }

    private pagesModalOpen(modal: any, title: string, yesBtn: string) {
      if(!Session.isLoggedIn()){
        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 pageSaveConfirmed(data: any) {
      if(!Session.isLoggedIn()){
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        if(!this.formGroup.valid) {
          this.pagesModalOpen(this.alertModalSavePage, "Save", "Add a new Page");
          this.modalErrorMessage = "Please fill in all required fields marked with *";
        } else {
          this.modalErrorMessage = "";
          this._helpContentService.savePage(<Page> this.formGroup.value, this.properties.adminToolsAPIURL).subscribe(
              page => {
                this.pageSavedSuccessfully(page);
              },
              error => this.handleUpdateError("System error creating page", error)
          );
        }
      }
    }

    public pageUpdateConfirmed(data: any) {
      if(!Session.isLoggedIn()){
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        if(!this.formGroup.valid) {
          this.pagesModalOpen(this.alertModalUpdatePage, "Update", "Update Page");
          this.modalErrorMessage = "Please fill in all required fields marked with *";
        } else {
          this._helpContentService.updatePage(<Page> this.formGroup.value, this.properties.adminToolsAPIURL).subscribe(
              page => {
                this.pageUpdatedSuccessfully(page);
              },
              error => this.handleUpdateError("System error updating page", error)
          );
        }
      }
    }

    public pageSavedSuccessfully(page: Page) {
        this.checkboxes.push(<CheckPage>{page : page, checked : false});
        this.applyCheck(false);
    }

    public pageUpdatedSuccessfully(page : Page) {
        this.checkboxes.find(checkItem => checkItem.page._id==page._id).page = page;
        this.applyCheck(false);
    }

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

    public applyFilter() {
        this.checkboxes = [];
        this.pages.filter(item => this.filterPages(item)).forEach(
            _ => this.checkboxes.push(<CheckPage>{page: _, checked: false})
        );
    }

    public filterPages(page : Page) : boolean {
        let textFlag = this.searchText.toString() == '' || (page.route + ' ' +page.name).match(this.searchText) != null;
        return textFlag;
    }

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

        this.showLoading = false;
    }

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

        this.showLoading = false;
    }

    // public filterByCommunity(event: any) {
    //     this.selectedCommunityPid = event.target.value;
    //     this.applyCommunityFilter(this.selectedCommunityPid);
    // }

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

    public togglePages(status : boolean, ids : string[]) {
      if(!Session.isLoggedIn()){
        this._router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.NOT_VALID, "redirectUrl":  this._router.url} });
      } else {
        this.updateErrorMessage = "";

        this._helpContentService.togglePages(this.selectedCommunityPid,ids,status, this.properties.adminToolsAPIURL).subscribe(
            () => {
                for(let id of ids) {
                  let i = this.checkboxes.findIndex(_ => _.page._id == id);
                  this.checkboxes[i].page.isEnabled=status;
                }
                this.applyCheck(false);
            },
            error => this.handleUpdateError('System error changing the status of the selected page(s)', error)
        );
      }
    }

    public capitalizeFirstLetter(str: string) {
        return str.charAt(0).toUpperCase() + str.slice(1);
    }
}