import {Component, ElementRef, OnInit, ViewChild} from '@angular/core';
import {ActivatedRoute, Router} from "@angular/router";
import {HelpContentService} from "../../../services/help-content.service";
import {
  FormArray,
  UntypedFormArray,
  UntypedFormBuilder,
  UntypedFormGroup,
  ValidatorFn,
  Validators
} from "@angular/forms";
import {Page} from "../../../utils/entities/adminTool/page";
import {EnvProperties} from '../../../utils/properties/env-properties';
import {HelperFunctions} from "../../../utils/HelperFunctions.class";
import {Subscriber} from "rxjs";
import {properties} from "../../../../../environments/environment";
import {PortalUtils} from "../../portal/portalHelper";
import {AlertModal} from "../../../utils/modal/alert";
import {Option} from "../../../sharedComponents/input/input.component";
import {Title} from "@angular/platform-browser";
import {ClearCacheService} from "../../../services/clear-cache.service";
import {NotificationHandler} from "../../../utils/notification-handler";
import {PluginsService} from "../../../services/plugins.service";
import {PluginTemplate} from "../../../utils/entities/adminTool/pluginTemplate";
import {Entity} from "../../../utils/entities/adminTool/entity";
import {StringUtils} from "../../../utils/string-utils.class";

@Component({
  selector: 'plugin-templates',
  templateUrl: './pluginTemplates.component.html',
})
export class PluginTemplatesComponent implements OnInit {
  @ViewChild('editModal') editModal: AlertModal;
  @ViewChild('deleteModal') deleteModal: AlertModal;
  private selectedId: string;
  public checkboxes: {
    template: PluginTemplate;
    checked: boolean;
  }[] = [];
  public templates: PluginTemplate[] = [];
  public templateForm: UntypedFormGroup;
  public pagesCtrl: UntypedFormArray;
  urlValidator: ValidatorFn = StringUtils.urlValidator;
  private searchText: RegExp = new RegExp('');
  public keyword: string = "";
  public properties: EnvProperties = properties;
  public formPages: Page[] = [];
  public showLoading: boolean = true;
  public filterForm: UntypedFormGroup;
  private subscriptions: any[] = [];
  public allPages: Option[] = [];
  public attrTypeOptions: Option[] = [
    {label:"Text", value:"text"},
    {label:"HTML", value:"HTML"},
    {label:"Boolean", value:"boolean"},
    {label:"URL", value:"URL"},
  ];
  public placementsOptions: Option[] = [
    {label:"Top", value:"top"},
    {label:"Bottom", value:"bottom"},
    {label:"Top Right", value:"top-right"},
    {label:"Center", value:"center"},
    {label:"Right", value:"right"},
    {label:"Left", value:"left"},
  ];
  selectedCommunityPid = null;
  public portalUtils: PortalUtils = new PortalUtils();
  private index: number;
  
  constructor(private element: ElementRef, private route: ActivatedRoute, private _router: Router,
              private title: Title,private _helpContentService: HelpContentService,
              private _pluginsService: PluginsService, private _fb: UntypedFormBuilder,
              private _clearCacheService: ClearCacheService) {
  }
  
  ngOnInit() {
    this.title.setTitle('Administrator Dashboard | Classes');
    this.filterForm = this._fb.group({
      keyword: [''],
      type: ['all', Validators.required]
    });
    this.subscriptions.push(this.filterForm.get('keyword').valueChanges.subscribe(value => {
      this.searchText = new RegExp(value, 'i');
      this.applyFilters();
    }));
    this.subscriptions.push(this.filterForm.get('type').valueChanges.subscribe(value => {
      this.applyFilters();
    }));
    this.getTemplates();
    this.subscriptions.push(this.route.queryParams.subscribe(params => {
      HelperFunctions.scroll();
      this.selectedCommunityPid = params['communityId'];
      this.getPages();
    }));
    
  }
  
  ngOnDestroy(): void {
    this.subscriptions.forEach(value => {
      if (value instanceof Subscriber) {
        value.unsubscribe();
      } else if (value instanceof Function) {
        value();
      }
    });
  }
  
  getTemplates() {
    this.showLoading = true;
    this.subscriptions.push(this._pluginsService.getAllPluginTemplates(this.properties.adminToolsAPIURL).subscribe(
      templates => {
        this.templates = templates;
        this.checkboxes = [];
        
        let self = this;
        templates.forEach(_ => {
          self.checkboxes.push( {template: _, checked: false});
        });
        
        this.showLoading = false;
      },
      error => this.handleError('System error retrieving classes', error)));
  }
  
  // public showModal():void {
  //     this.modal.showModal();
  // }
  
  public toggleCheckBoxes(event) {
    this.checkboxes.forEach(_ => _.checked = event.target.checked);
  }
  
  public applyCheck(flag: boolean) {
    this.checkboxes.forEach(_ => _.checked = flag);
  }
  
  private deleteFromArray(id: string): void {

      let i = this.templates.findIndex(_ => _._id == id);
      this.templates.splice(i, 1);

    this.applyFilters();
  }
  
  public confirmDelete(id: string) {
    this.selectedId = id;
    this.confirmModalOpen();
  }

  
  private confirmModalOpen() {
    this.deleteModal.alertTitle = "Delete Confirmation";
    this.deleteModal.message = "Are you sure you want to delete the selected template(s)?";
    this.deleteModal.okButtonText = "Yes";
    this.deleteModal.open();
  }
  
  public confirmedDelete() {
    this.showLoading = true;
    this.subscriptions.push(this._pluginsService.deletePluginTemplate(this.selectedId, this.properties.adminToolsAPIURL).subscribe(
      _ => {
        this.deleteFromArray(this.selectedId);
        NotificationHandler.rise('Template have been <b>successfully deleted</b>');
        this.showLoading = false;
        this._clearCacheService.clearCache("Template id deleted");
      },
      error => this.handleUpdateError('System error deleting the selected Template', error)
    ));
  }
  
  public edit(i: number) {
    let pluginTemplate: PluginTemplate = this.checkboxes[i].template;
    this.index = this.templates.findIndex(value => value._id === pluginTemplate._id);
    // this.formPages = <Page[]>pluginTemplate.pages;
    this.pagesCtrl = this._fb.array([], Validators.required);
    this.templateForm = this._fb.group({
      _id: this._fb.control(pluginTemplate._id),
      name: this._fb.control(pluginTemplate.name, Validators.required),
      pages: this.pagesCtrl,
      portalType: this._fb.control(pluginTemplate.portalType, Validators.required),

      code: this._fb.control(pluginTemplate.code, Validators.required),
      description: this._fb.control(pluginTemplate.description),
      placements: this._fb.array(pluginTemplate.placements),
      attributes:this._fb.array([])
    });
    this.templateForm.get('portalType').disable();
    for (let i = 0; i < pluginTemplate.pages.length; i++) {
      this.pagesCtrl.push(this._fb.control(this.getPageById(pluginTemplate.pages[i])));
    }
    if(pluginTemplate.attributes) {
      for (let attrKey of Object.keys(pluginTemplate.attributes)) {
        (this.templateForm.get("attributes") as FormArray).push(this._fb.group({
          key: this._fb.control(attrKey, Validators.required),
          name: this._fb.control(pluginTemplate.attributes[attrKey].name, Validators.required),
          type: this._fb.control(pluginTemplate.attributes[attrKey].type, Validators.required),
          value: this._fb.control(pluginTemplate.attributes[attrKey].value)
        }));
      }
    }
    this.modalOpen("Edit Template", "Save Changes");
  }
  
  public newPlugin() {
    this.pagesCtrl = this._fb.array([], Validators.required);
    if (this.templateForm) {
      this.templateForm.get('portalType').enable();
    }
    this.templateForm = this._fb.group({
      _id: this._fb.control(null),
      name: this._fb.control('', Validators.required),
      code: this._fb.control('', Validators.required),
      description: this._fb.control(''),
      pages: this.pagesCtrl,
      portalType: this._fb.control('community', Validators.required),
      placements: this._fb.array([]),
      attributes:this._fb.array([])
    });
     this.addNewAttr();
    this.modalOpen("Create template", "Create");
  }
  
  private modalOpen(title: string, yesBtn: string) {
    this.editModal.okButtonLeft = false;
    this.editModal.alertTitle = title;
    this.editModal.okButtonText = yesBtn;
    this.editModal.open();
  }
  
  public saveConfirmed(data: any) {
    this.showLoading = true;
    let template:PluginTemplate = <PluginTemplate>this.templateForm.getRawValue();
    template.pages = this.pagesCtrl.getRawValue().map(page => page._id?page._id:page);
    template.attributes = new Map<string, {name: string; type: string; value: string}>();
    for (let attr of this.templateForm.getRawValue().attributes) {
      template.attributes[attr.key]={name: attr.name, type: attr.type, value: attr.value};
    }
    let update = template._id?true:false;
      this.subscriptions.push(this._pluginsService.savePluginTemplate(template, this.properties.adminToolsAPIURL).subscribe(
        saved => {
          this.savedSuccessfully(saved, update );
          NotificationHandler.rise('Template <b>' + saved.name + '</b> has been <b>successfully' + (update?' updated ':' created ') + '</b>');
          this._clearCacheService.clearCache("Template id saved");
        },
        error => this.handleUpdateError("System error creating template", error)
      ));
  }
  
  public savedSuccessfully(template: PluginTemplate, update:boolean) {
    if(update){
      this.templates[this.index] = template;
    }else{
      this.templates.push(template);
    }
    this.applyFilters();
    this.applyCheck(false);
    this.showLoading = false;
  }

  
  public applyFilters() {
    this.checkboxes = [];
    this.templates.filter(item => this.filterByType(item)).forEach(
      item => this.checkboxes.push({template: item, checked: false})
    );
    this.checkboxes = this.checkboxes.filter(item => this.filter(item.template));
  }
  
  public filterByType(template: PluginTemplate): boolean {
    let type = this.filterForm.get("type").value;
    return type == "all" || (type == template.portalType);
  }
  
  public filter(plugin: PluginTemplate): boolean {
    return this.searchText.toString() == '' || (plugin.name + ' ' + plugin.portalType).match(this.searchText) != null;
  }
  
  handleUpdateError(message: string, error = null) {
    if (error) {
      console.log('Server responded: ' + error);
    }
    NotificationHandler.rise(message,'danger');
    this.showLoading = false;
  }
  
  handleError(message: string, error = null) {
    if (error) {
      console.log('Server responded: ' + error);
    }
    NotificationHandler.rise(message,'danger');
    this.showLoading = false;
  }
  
  getPages() {
    this.showLoading = true;
    this.subscriptions.push(this._helpContentService.getAllPages(this.properties.adminToolsAPIURL).subscribe(
      pages => {
        this.allPages = [];
        pages.forEach(page => {
          this.allPages.push({
            label: page.name + " [" + page.portalType + "]",
            value: page
          });
        });
        this.showLoading = false;
      },
      error => this.handleError('System error retrieving pages', error)
    ));
  }

  addNewAttr(){
    (this.templateForm.get("attributes") as FormArray).push(this._fb.group({
      key:this._fb.control("", Validators.required),
      name: this._fb.control("", Validators.required),
      type: this._fb.control("text", Validators.required),
      value: this._fb.control("")
    }));
  }

  removeAttr(index){
    this.attrFormArray.removeAt(index);
    this.attrFormArray.markAsDirty();
  }
  get attrFormArray(){

    return this.templateForm.get("attributes") as FormArray;

  }

  attributeTypeChanged(form){
    let type = form.get("value").get("type");
    form.get("value").setValue("");
    if(type == "boolean"){
      form.get("value").setValue(false);
    }
  }
  public getPagesAsString(pageIds): string {

    let pages = [];
    for(let id of pageIds) {
      pages.push(this.allPages.filter(option => option.value._id == id).map((option => option.value.name  + " [" + option.value.portalType + "]")));

    }
    return pages.join(", ");
  }
  public getPageById(pageId) {
    for(let option of this.allPages) {
      if(option.value._id == pageId){
        return option.value;
      }
    }
    return pageId;
  }

}