import {AfterViewInit, Component, Input, OnChanges, OnInit, SimpleChanges, ViewChild} from "@angular/core";
import {SideBarService} from "../library/sharedComponents/sidebar/sideBar.service";
import {Indicator, IndicatorPath, Stakeholder} from "../utils/entities/stakeholder";
import {IndicatorUtils} from "../utils/indicator-utils";
import {FormArray, FormBuilder, FormControl, FormGroup, Validators} from "@angular/forms";
import {AlertModal} from "../openaireLibrary/utils/modal/alert";
import {StatisticsService} from "../utils/services/statistics.service";
import {HelperFunctions} from "../openaireLibrary/utils/HelperFunctions.class";
import {DomSanitizer} from "@angular/platform-browser";
import {StakeholderService} from "../services/stakeholder.service";
import {EnvProperties} from "../openaireLibrary/utils/properties/env-properties";

declare var UIkit;

@Component({
  selector: 'indicators',
  templateUrl: './indicators.component.html'
})
export class IndicatorsComponent implements OnInit, OnChanges {

  @Input()
  public properties: EnvProperties = null;
  @Input()
  public topicIndex: number = 0;
  @Input()
  public categoryIndex: number = 0;
  @Input()
  public subcategoryIndex: number = 0;
  @Input()
  public stakeholder: Stakeholder = null;
  public indicatorUtils: IndicatorUtils = new IndicatorUtils();
  public indicatorFb: FormGroup;
  public editIndicatorFb: FormGroup;
  /**
   * Editable indicator
   */
  public indicator: Indicator;
  public index: number;
  /**
   * Displayed chart and numbers base on Top filters
   */
  public displayCharts: Indicator[] = [];
  public displayNumbers: Indicator[] = [];
  /**
   * Top filters
   */
  public chartType: string = 'all';
  public privacy: string = 'all';
  public status: string = 'all';
  public keyword: string = null;
  /**
   * Grid or List View
   */
  public grid: boolean = true;

  @ViewChild('createIndicatorModal') createIndicatorModal: AlertModal;
  @ViewChild('editIndicatorModal') editIndicatorModal: AlertModal;

  constructor(private sideBarService: SideBarService,
              private stakeholderService: StakeholderService,
              private statisticsService: StatisticsService,
              private fb: FormBuilder,
              private sanitizer: DomSanitizer) {
  }

  ngOnInit(): void {
    if (document !== undefined) {
      let callback = (list): void => {
        let items: HTMLCollection = list.current.children;
        let reordered = [];
        let indicators = [];
        for (let i = 0; i < items.length; i++) {
          if (items.item(i).id) {
            reordered.push(+items.item(i).id);
          }
        }
        if(list.current.id === 'charts') {
          reordered.forEach((id, index) => {
            indicators[index] = HelperFunctions.copy(this.charts[id]);
          });
          this.reorderIndicators('chart', indicators);
        } else if(list.current.id === 'numbers') {
          reordered.forEach((id, index) => {
            indicators[index] = HelperFunctions.copy(this.numbers[id]);
          });
          this.reorderIndicators('number', indicators);
        }
      };
      UIkit.util.on(document, 'moved', '#charts', callback);
      UIkit.util.on(document, 'moved', '#numbers', callback);
    }
  }

  ngOnChanges(changes: SimpleChanges): void {
    if (this.canEdit) {
      this.filterCharts();
      this.filterNumbers();
    }
  }

  public toggleOpen(event = null) {
    if (!event) {
      this.sideBarService.setOpen(!this.open);
    } else if (event && event['value'] === true) {
      this.sideBarService.setOpen(false);
    }
  }

  public changeGrid(value) {
    this.grid = value;
  }

  filterCharts() {
    this.displayCharts = this.filterChartType(this.filterPrivacy(
      this.filterStatus(this.filterByKeyword(this.charts, this.keyword), this.status),
      this.privacy),
      this.chartType
    );
  }

  filterNumbers() {
    this.displayNumbers = this.filterPrivacy(this.filterStatus(
      this.filterByKeyword(this.numbers, this.keyword),
      this.status),
      this.privacy);
  }

  onChartTypeChange(value) {
    this.displayCharts = this.filterChartType(this.charts, value);
  }

  onPrivacyChange(value) {
    this.displayCharts = this.filterPrivacy(this.charts, value);
    this.displayNumbers = this.filterPrivacy(this.numbers, value);
  }

  onStatusChange(value) {
    this.displayCharts = this.filterStatus(this.charts, value);
    this.displayNumbers = this.filterStatus(this.numbers, value);
  }

  onKeywordChange(value) {
    this.displayCharts = this.filterByKeyword(this.charts, value);
    this.displayNumbers = this.filterByKeyword(this.numbers, value);
  }

  private filterChartType(indicators: Indicator[], value): Indicator[] {
    if (value === 'all') {
      return indicators;
    } else {
      return indicators.filter(indicator =>
        indicator.indicatorPaths.filter(indicatorPath => indicatorPath.type === value).length > 0);
    }
  }

  private filterPrivacy(indicators: Indicator[], value): Indicator[] {
    if (value === 'all') {
      return indicators;
    } else {
      return indicators.filter(indicator => indicator.isPublic === (value === 'public'));
    }
  }

  private filterStatus(indicators: Indicator[], value): Indicator[] {
    if (value === 'all') {
      return indicators;
    } else {
      return indicators.filter(indicator => indicator.isActive === (value === 'active'));
    }
  }

  private filterByKeyword(indicators: Indicator[], value): Indicator[] {
    if (value === null || value === '') {
      return indicators;
    } else {
      return indicators.filter(indicator => (indicator.name && indicator.name.includes(value))
        || (indicator.description && indicator.description.includes(value)));
    }
  }

  get charts(): Indicator[] {
    return this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex].charts;
  }

  set charts(indicators: Indicator[]) {
    this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex].charts = indicators;
  }

  get numbers(): Indicator[] {
    return this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex].numbers;
  }

  set numbers(indicators: Indicator[]) {
    this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex].numbers = indicators;
  }

  get open(): boolean {
    return this.sideBarService.open;
  }

  get canNumbersReorder(): boolean {
    return this.displayNumbers.length === this.numbers.length;
  }

  get canChartsReorder(): boolean {
    return this.displayCharts.length === this.charts.length;
  }

  get canEdit() {
    return this.stakeholder &&
      this.stakeholder.topics[this.topicIndex] &&
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex] &&
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex];
  }

  public get urls(): FormArray {
    return this.indicatorFb.get('urls') as FormArray;
  }

  public get indicatorPaths(): FormArray {
    return this.editIndicatorFb.get('indicatorPaths') as FormArray;
  }

  public getParameters(index: number): FormArray {
    return this.indicatorPaths.at(index).get('parameters') as FormArray;
  }

  public getParameter(index: number, key: string): FormControl {
    return this.getParameters(index).controls.filter(control => control.value.key === key)[0] as FormControl;
  }

  private getUrlByStakeHolder(indicatorPath: IndicatorPath) {
    return this.sanitizer.bypassSecurityTrustResourceUrl(
      this.statisticsService.getChartUrl(indicatorPath.source, this.indicatorUtils.getFullUrl(indicatorPath)));
  }

  public addUrl() {
    this.urls.push(this.fb.control('', [Validators.required,
      Validators.pattern('https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|www\.' +
        '[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9]+\.[^\s]{2,}|www\.' +
        '[a-zA-Z0-9]+\.[^\s]{2,}')])
    );
  }

  public createIndicatorOpen() {
    this.indicatorFb = this.fb.group({
      name: this.fb.control('', Validators.required),
      description: this.fb.control(''),
      width: this.fb.control('small', Validators.required),
      urls: this.fb.array([]),
    });
    this.addUrl();
    this.createIndicatorModal.alertTitle = 'Create a new chart Indicator';
    this.createIndicatorModal.cancelButtonText = 'Cancel';
    this.createIndicatorModal.okButtonText = 'Create';
    this.createIndicatorModal.okButtonLeft = false;
    this.createIndicatorModal.alertMessage = false;
    this.createIndicatorModal.open();
  }

  public createIndicator() {
    this.indicator = new Indicator(
      this.indicatorFb.value.name,
      this.indicatorFb.value.description,
      'chart',
      this.indicatorFb.value.width,
      false,
      false,
      []
    );
    this.indicatorFb.value.urls.forEach(url => {
      this.indicator.indicatorPaths.push(
        this.indicatorUtils.generateIndicatorByChartUrl(this.statisticsService.getChartSource(url), url));
    });
    this.editIndicatorOpen();
  }

  public editIndicatorOpen(index: number = -1) {
    this.index = index;
    if (this.index !== -1) {
      this.indicator = HelperFunctions.copy(this.charts[index]);
    }
    let indicatorPaths = this.fb.array([]);
    this.indicator.indicatorPaths.forEach(indicatorPath => {
      let parameters = this.fb.array([]);
      if (indicatorPath.parameters) {
        Object.keys(indicatorPath.parameters).forEach(key => {
          if (this.indicatorUtils.ignoredParameters.indexOf(key) === -1) {
            if (this.indicatorUtils.parametersValidators.has(key)) {
              parameters.push(this.fb.group({
                key: this.fb.control(key),
                value: this.fb.control(indicatorPath.parameters[key], this.indicatorUtils.parametersValidators.get(key))
              }));
            } else {
              parameters.push(this.fb.group({
                key: this.fb.control(key),
                value: this.fb.control(indicatorPath.parameters[key], Validators.required)
              }));
            }
          }
        });
      }
      indicatorPaths.push(this.fb.group({
        parameters: parameters
      }));
    });
    this.editIndicatorFb = this.fb.group({
      id: this.fb.control(this.indicator._id),
      name: this.fb.control(this.indicator.name, Validators.required),
      description: this.fb.control(this.indicator.description),
      isPublic: this.fb.control(this.indicator.isPublic),
      isActive: this.fb.control(this.indicator.isActive),
      indicatorPaths: indicatorPaths,
      width: this.fb.control(this.indicator.width, Validators.required),
    });
    this.editIndicatorModal.cancelButtonText = 'Cancel';
    this.editIndicatorModal.okButtonText = 'Save Changes';
    this.editIndicatorModal.okButtonLeft = false;
    this.editIndicatorModal.alertMessage = false;
    this.editIndicatorModal.open();
    setTimeout(() => {
      this.indicator.indicatorPaths.forEach(indicatorPath => {
        indicatorPath.safeResourceUrl = this.getUrlByStakeHolder(indicatorPath)
      });
    }, 500);
  }

  saveIndicator() {
    this.indicator = this.indicatorUtils.generateIndicatorByForm(this.editIndicatorFb.value, this.indicator.indicatorPaths);
    let path = [
      this.stakeholder._id,
      this.stakeholder.topics[this.topicIndex]._id,
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex]._id,
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex]._id
    ];
    this.stakeholderService.saveElement(this.properties.monitorServiceAPIURL, this.indicator, path).subscribe(indicator => {
      if (this.index !== -1) {
        this.charts[this.index] = indicator;
      } else {
        this.charts.push(indicator);
      }
      this.filterCharts();
      this.stakeholderService.setStakeholder(this.stakeholder);
    });
  }

  reorderIndicators(type: string, indicators: Indicator[]) {
    let path = [
      this.stakeholder._id,
      this.stakeholder.topics[this.topicIndex]._id,
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex]._id,
      this.stakeholder.topics[this.topicIndex].categories[this.categoryIndex].subCategories[this.subcategoryIndex]._id
    ];
    this.stakeholderService.reorderIndicators(this.properties.monitorServiceAPIURL, path, indicators, type).
    subscribe(() => {
      if(type === 'chart') {
        this.charts = indicators;
        this.filterCharts();
      } else {
        this.numbers = indicators;
        this.filterNumbers();
      }
      this.stakeholderService.setStakeholder(this.stakeholder);
    });
  }

  refreshIndicator(index: number) {
    this.indicator = this.indicatorUtils.generateIndicatorByForm(this.editIndicatorFb.value, this.indicator.indicatorPaths);
    this.indicator.indicatorPaths.forEach(indicatorPath => {
      indicatorPath.safeResourceUrl = this.getUrlByStakeHolder(indicatorPath)
    });
    this.indicatorPaths.at(index).markAsPristine({onlySelf: true});
  }
}