import { Component, OnInit, Input, ViewChild, forwardRef, OnDestroy } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MatDatepickerModule } from '@angular/material/datepicker';
import { MatOptionModule } from '@angular/material/core';
import { MatSelectModule } from '@angular/material/select';
import { MatCheckboxModule } from '@angular/material/checkbox';
import { MatRadioModule } from '@angular/material/radio';
import { MatIconModule } from '@angular/material/icon';
import { MatMenuModule } from '@angular/material/menu';
import { MatButtonModule } from '@angular/material/button';
import { MatInputModule } from '@angular/material/input';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatPaginator, MatPaginatorModule } from '@angular/material/paginator';
import { MatSort, MatSortModule } from '@angular/material/sort';
import { MatTableDataSource, MatTableModule } from '@angular/material/table';
import { DragDropModule, CdkDragDrop, moveItemInArray, CdkDropList, CdkDrag } from '@angular/cdk/drag-drop';
import { ProgressSpinnerService } from '@pega/angular-sdk-components';
import { Utils } from '@pega/angular-sdk-components';
import { ComponentMapperComponent } from '@pega/angular-sdk-components';
import { getCurrencyOptions } from '@pega/angular-sdk-components';
import { getLocale, getSeconds } from '@pega/angular-sdk-components';
import { formatters } from '@pega/angular-sdk-components';

import { init } from './listViewHelpers';

const SELECTION_MODE = { SINGLE: 'single', MULTI: 'multi' };

interface ListViewProps {
  inheritedProps: any;
  title: string | undefined;
  // If any, enter additional props that only exist on this component
  globalSearch?: boolean;
  referenceList?: any;
  rowClickAction?: any;
  selectionMode?: string;
  referenceType?: string;
  compositeKeys?: any;
  showDynamicFields?: boolean;
  presets?: any;
  reorderFields: string | boolean;
  grouping: string | boolean;
  value: any;
  readonlyContextList: any;
  label?: string;
}

export class Group {
  level = 0;
  parent: Group;
  expanded = true;
  totalCounts = 0;
  get visible(): boolean {
    return !this.parent || (this.parent.visible && this.parent.expanded);
  }
}

@Component({
  selector: 'app-list-view',
  templateUrl: './list-view.component.html',
  styleUrls: ['./list-view.component.scss'],
  standalone: true,
  imports: [
    CommonModule,
    MatFormFieldModule,
    MatInputModule,
    MatTableModule,
    MatSortModule,
    DragDropModule,
    CdkDropList,
    CdkDrag,
    MatButtonModule,
    MatMenuModule,
    MatIconModule,
    MatRadioModule,
    MatCheckboxModule,
    MatPaginatorModule,
    MatSelectModule,
    MatOptionModule,
    MatDatepickerModule,
    forwardRef(() => ComponentMapperComponent)
  ]
})
export class ListViewComponent implements OnInit, OnDestroy {
  @ViewChild(MatPaginator) paginator: MatPaginator;
  @ViewChild(MatSort) sort: MatSort;

  @Input() pConn$: typeof PConnect;
  @Input() bInForm$ = true;
  @Input() payload;

  repeatList$: MatTableDataSource<any>;
  fields$: any[];

  displayedColumns$ = Array<any>();
  groupByColumns$: string[] = [];

  configProps$: ListViewProps;

  updatedRefList: any;

  repeatListData: any[] = [];

  searchIcon$: string;

  bShowSearch$ = false;
  bColumnReorder$ = false;
  bGrouping$ = false;

  perfFilter: string;
  searchFilter: string;

  menuSvgIcon$: string;
  arrowSvgIcon$ = '';
  arrowDownSvgIcon$: string;
  arrowUpSvgIcon$: string;

  filterSvgIcon$: string;
  filterOnSvgIcon$: string;
  groupBySvgIcon$: string;

  compareType: string;
  compareRef: string;
  arrowDirection = 'down';

  filterByColumns: any[] = [];
  bShowFilterPopover$ = false;
  bContains$ = true;
  bDateTime$ = false;

  filterContainsLabel$ = '';
  filterContainsType$ = 'contains';
  filterContainsValue$: any;

  bIsDate$ = false;
  bIsDateTime$ = false;
  bIsTime$ = false;

  currentFilterRefData: any;
  currentFilterImageEl: any;

  arFilterMainButtons$: any[] = [];
  arFilterSecondaryButtons$: any[] = [];
  selectionMode?: string;
  singleSelectionMode: boolean;
  multiSelectionMode: boolean;
  rowID: any;
  response: any;
  compositeKeys: any;
  showDynamicFields: any;
  filters: any = {};
  selectParam: any[] = [];
  filterPayload: any;
  ref: any = {};
  cosmosTableRef: any;
  listContext: any = {};
  query: any = null;
  paging: any;
  fieldDefs: any;
  xRayApis = PCore.getDebugger().getXRayRuntime();
  xRayUid = this.xRayApis.startXRay();
  checkBoxValue: string;
  label?: string = '';

  constructor(
    private psService: ProgressSpinnerService,
    public utils: Utils
  ) {}

  ngOnInit(): void {
    this.configProps$ = this.pConn$.getConfigProps() as ListViewProps;
    /** By default, pyGUID is used for Data classes and pyID is for Work classes as row-id/key */
    const defRowID = this.configProps$?.referenceType === 'Case' ? 'pyID' : 'pyGUID';
    /** If compositeKeys is defined, use dynamic value, else fallback to pyID or pyGUID. */
    this.compositeKeys = this.configProps$?.compositeKeys;
    this.rowID = this.compositeKeys && this.compositeKeys?.length === 1 ? this.compositeKeys[0] : defRowID;
    this.bShowSearch$ = this.utils.getBooleanValue(this.configProps$?.globalSearch ? this.configProps$.globalSearch : this.payload?.globalSearch);
    this.bColumnReorder$ = this.utils.getBooleanValue(this.configProps$.reorderFields);
    this.bGrouping$ = this.utils.getBooleanValue(this.configProps$.grouping);
    this.showDynamicFields = this.configProps$?.showDynamicFields;

    this.menuSvgIcon$ = this.utils.getImageSrc('more', this.utils.getSDKStaticContentUrl());
    this.arrowDownSvgIcon$ = this.utils.getImageSrc('arrow-down', this.utils.getSDKStaticContentUrl());
    this.arrowUpSvgIcon$ = this.utils.getImageSrc('arrow-up', this.utils.getSDKStaticContentUrl());

    this.filterSvgIcon$ = this.utils.getImageSrc('filter', this.utils.getSDKStaticContentUrl());
    this.filterOnSvgIcon$ = this.utils.getImageSrc('filter-on', this.utils.getSDKStaticContentUrl());
    this.groupBySvgIcon$ = this.utils.getImageSrc('row', this.utils.getSDKStaticContentUrl());

    this.selectionMode = this.configProps$.selectionMode;

    this.checkBoxValue = this.configProps$.value;

    this.arFilterMainButtons$.push({ actionID: 'submit', jsAction: 'submit', name: 'Submit' });
    this.arFilterSecondaryButtons$.push({ actionID: 'cancel', jsAction: 'cancel', name: 'Cancel' });

    let title = this.configProps$?.title || this.configProps$?.label || 'List';
    const inheritedProps = this.configProps$?.inheritedProps;
    if (title === 'List' && inheritedProps) {
      for (const inheritedProp of inheritedProps) {
        if (inheritedProp?.prop === 'label') {
          title = inheritedProp?.value;
          break;
        }
      }
    }
    this.label = title;

    this.searchIcon$ = this.utils.getImageSrc('search', this.utils.getSDKStaticContentUrl());
    setTimeout(() => {
      PCore.getPubSubUtils().subscribe(
        PCore.getConstants().PUB_SUB_EVENTS.EVENT_DASHBOARD_FILTER_CHANGE,
        data => {
          this.processFilterChange(data);
        },
        `dashboard-component-${'id'}`,
        false,
        this.pConn$.getContextName()
      );
      PCore.getPubSubUtils().subscribe(
        PCore.getConstants().PUB_SUB_EVENTS.EVENT_DASHBOARD_FILTER_CLEAR_ALL,
        () => {
          this.filters = {};
          this.processFilterClear();
        },
        `dashboard-component-${'id'}`,
        false,
        this.pConn$.getContextName()
      );
    }, 0);
    if (this.configProps$) {
      if (!this.payload) {
        this.payload = { referenceList: this.configProps$.referenceList };
      }
      init({
        pConn$: this.pConn$,
        bInForm$: this.bInForm$,
        ...this.payload,
        listContext: this.listContext,
        ref: this.ref,
        showDynamicFields: this.showDynamicFields,
        xRayUid: this.xRayUid,
        cosmosTableRef: this.cosmosTableRef,
        selectionMode: this.selectionMode
      }).then(response => {
        this.listContext = response;
        this.getListData();
      });
    }
  }

  getFieldFromFilter(filter, dateRange = false) {
    let fieldValue;
    if (dateRange) {
      fieldValue = filter?.AND[0]?.condition.lhs.field;
    } else {
      fieldValue = filter?.condition.lhs.field;
    }
    return fieldValue;
  }

  // Will be triggered when EVENT_DASHBOARD_FILTER_CHANGE fires
  processFilterChange(data) {
    const { filterId, filterExpression } = data;
    let dashboardFilterPayload: any = {
      query: {
        filter: {},
        select: []
      }
    };

    this.filters[filterId] = filterExpression;
    let isDateRange = !!data.filterExpression?.AND;
    // Will be AND by default but making it dynamic in case we support dynamic relational ops in future
    const relationalOp = 'AND';

    let field = this.getFieldFromFilter(filterExpression, isDateRange);
    const selectParam: any[] = [];
    // Constructing the select parameters list (will be sent in dashboardFilterPayload)
    this.displayedColumns$?.forEach(col => {
      selectParam.push({
        field: col
      });
    });

    // Checking if the triggered filter is applicable for this list
    if (data.filterExpression !== null && !(this.displayedColumns$?.length && this.displayedColumns$?.includes(field))) {
      return;
    }
    // This is a flag which will be used to reset dashboardFilterPayload in case we don't find any valid filters
    let validFilter = false;

    let index = 1;
    // Iterating over the current filters list to create filter data which will be POSTed
    const filterKeys: any[] = Object.keys(this.filters);
    const filterValues: any[] = Object.values(this.filters);
    for (let filterIndex = 0; filterIndex < filterKeys.length; filterIndex++) {
      const filter = filterValues[filterIndex];
      // If the filter is null then we can skip this iteration
      if (filter === null) {
        // eslint-disable-next-line no-continue
        continue;
      }

      // Checking if the filter is of type- Date Range
      isDateRange = !!filter?.AND;
      field = this.getFieldFromFilter(filter, isDateRange);

      if (!(this.displayedColumns$?.length && this.displayedColumns$?.includes(field))) {
        // eslint-disable-next-line no-continue
        continue;
      }
      // If we reach here that implies we've at least one valid filter, hence setting the flag
      validFilter = true;
      /** Below are the 2 cases for- Text & Date-Range filter types where we'll construct filter data which will be sent in the dashboardFilterPayload
       * In Constellation DX Components, through Repeating Structures they might be using several APIs to do it. We're doing it here
       */
      if (isDateRange) {
        dashboardFilterPayload = this.filterBasedOnDateRange(dashboardFilterPayload, filter, relationalOp, selectParam, index);
      } else {
        dashboardFilterPayload.query.filter.filterConditions = {
          ...dashboardFilterPayload.query.filter.filterConditions,
          [`T${index++}`]: { ...filter.condition, ignoreCase: true }
        };

        if (dashboardFilterPayload.query.filter.logic) {
          dashboardFilterPayload.query.filter.logic = `${dashboardFilterPayload.query.filter.logic} ${relationalOp} T${index - 1}`;
        } else {
          dashboardFilterPayload.query.filter.logic = `T${index - 1}`;
        }

        dashboardFilterPayload.query.select = selectParam;
      }
    }

    // Reset the dashboardFilterPayload if we end up with no valid filters for the list
    if (!validFilter) {
      dashboardFilterPayload = undefined;
    }
    this.filterPayload = dashboardFilterPayload;
    this.getListData();
  }

  filterBasedOnDateRange(dashboardFilterPayload, filter, relationalOp, selectParam, index) {
    const dateRelationalOp = filter?.AND ? 'AND' : 'OR';
    dashboardFilterPayload.query.filter.filterConditions = {
      ...dashboardFilterPayload.query.filter.filterConditions,
      [`T${index++}`]: { ...filter[relationalOp][0].condition },
      [`T${index++}`]: { ...filter[relationalOp][1].condition }
    };
    if (dashboardFilterPayload.query.filter.logic) {
      dashboardFilterPayload.query.filter.logic = `${dashboardFilterPayload.query.filter.logic} ${relationalOp} (T${index - 2} ${dateRelationalOp} T${
        index - 1
      })`;
    } else {
      dashboardFilterPayload.query.filter.logic = `(T${index - 2} ${relationalOp} T${index - 1})`;
    }

    dashboardFilterPayload.query.select = selectParam;

    return dashboardFilterPayload;
  }

  processFilterClear() {
    this.filterPayload = undefined;
    this.getListData();
  }

  getFieldsMetadata(refList) {
    // @ts-ignore - 3rd parameter "associationFilter" should be optional for getDataViewMetadata method
    return PCore.getAnalyticsUtils().getDataViewMetadata(refList, this.showDynamicFields);
  }

  getListData() {
    const componentConfig = this.pConn$.getComponentConfig();
    if (this.configProps$) {
      this.preparePayload();
      const refList = this.configProps$.referenceList;
      const fieldsMetaDataPromise = this.getFieldsMetadata(refList);
      // returns a promise
      const payload = this.payload || this.filterPayload || {};
      const dataViewParameters = this.payload.parameters;

      const workListDataPromise = !this.bInForm$
        ? PCore.getDataApiUtils().getData(refList, payload)
        : PCore.getDataPageUtils().getDataAsync(
            refList,
            this.pConn$.getContextName(),
            payload.dataViewParameters ? payload.dataViewParameters : dataViewParameters,
            this.paging,
            this.query
          );

      this.bShowFilterPopover$ = false;

      this.psService.sendMessage(true);

      Promise.all([fieldsMetaDataPromise, workListDataPromise])
        .then((results: any) => {
          const fieldsMetaData = results[0];
          const workListData = results[1];

          this.fields$ = this.configProps$.presets[0].children[0].children;
          // this is an unresovled version of this.fields$, need unresolved, so can get the property reference
          const columnFields = componentConfig.presets[0].children[0].children;

          const tableDataResults = !this.bInForm$ ? workListData.data.data : workListData.data;

          const columns = this.getHeaderCells(columnFields, this.fieldDefs);
          this.fields$ = this.updateFields(this.fields$, fieldsMetaData.data.fields, columns);
          this.displayedColumns$ = columns.map(col => {
            return col.id;
          });
          this.response = tableDataResults;
          this.updatedRefList = this.updateData(tableDataResults, this.fields$);
          if (this.selectionMode === SELECTION_MODE.SINGLE && this.updatedRefList?.length > 0) {
            this.displayedColumns$?.unshift('select');
            this.singleSelectionMode = true;
          } else if (this.selectionMode === SELECTION_MODE.MULTI && this.updatedRefList?.length > 0) {
            this.displayedColumns$?.unshift('select');
            this.multiSelectionMode = true;
          }

          this.repeatList$ = new MatTableDataSource(this.updatedRefList);
          this.repeatList$.filterPredicate = this.customFilterPredicate.bind(this);

          // keeping an original copy to get back after possible sorts, filters and groupBy
          this.repeatListData = this.repeatList$.data.slice();

          this.repeatList$.paginator = this.paginator;
          this.repeatList$.sort = this.sort;
          this.psService.sendMessage(false);
        })
        .catch(() => {
          console.error("Couldn't fetch either the fieldsMetaData or workListData");
          this.psService.sendMessage(false);
        });
    }
  }

  preparePayload() {
    const { fieldDefs, itemKey, patchQueryFields } = this.listContext.meta;
    this.fieldDefs = fieldDefs;
    let listFields = fieldDefs ? this.buildSelect(fieldDefs, undefined, patchQueryFields, this.payload?.compositeKeys) : [];
    listFields = this.addItemKeyInSelect(fieldDefs, itemKey, listFields, this.payload?.compositeKeys);
    if (this.payload.query) {
      this.query = this.payload.query;
    } else if (listFields?.length && this.listContext.meta.isQueryable) {
      if (this.filterPayload) {
        this.query = {
          select: listFields,
          filter: this.filterPayload?.query?.filter
        };
      } else {
        this.query = { select: listFields };
      }
    } else if (this.filterPayload) {
      this.query = this.filterPayload?.query;
    }
  }
  // ngOnChanges(changes) {
  //   if (changes && changes.payload) {
  //     const currentPayloadVal = changes.payload?.currentValue;
  //     const previousPayloadVal = changes.payload?.previousValue;
  //     if (currentPayloadVal !== previousPayloadVal) {
  //       this.getListData();
  //     }
  //   }
  // }

  ngOnDestroy() {
    PCore.getPubSubUtils().unsubscribe(
      PCore.getConstants().PUB_SUB_EVENTS.EVENT_DASHBOARD_FILTER_CHANGE,
      `dashboard-component-${'id'}`,
      this.pConn$.getContextName()
    );
    PCore.getPubSubUtils().unsubscribe(
      PCore.getConstants().PUB_SUB_EVENTS.EVENT_DASHBOARD_FILTER_CLEAR_ALL,
      `dashboard-component-${'id'}`,
      this.pConn$.getContextName()
    );
  }

  // ngAfterViewInit() {
  //   // paginator has to exist for this to work,
  //   // so called after init (paginator drawn)
  //   // Calls are now in workListData promise
  //   // this.repeatList$.paginator = this.paginator;
  //   // this.repeatList$.sort = this.sort;
  // }

  drop(event: CdkDragDrop<string[]>) {
    moveItemInArray(this.displayedColumns$, event.previousIndex, event.currentIndex);
  }

  updateFields(arFields: any[], arColumns, fields): any[] {
    const arReturn = arFields;
    arReturn.forEach((field, i) => {
      field.config = { ...field.config, ...fields[i], name: fields[i].id };
    });
    return arReturn;
  }

  applySearch(event: Event) {
    const filterValue = (event.target as HTMLInputElement).value;
    this.searchFilter = filterValue.trim().toLowerCase();

    if (this.groupByColumns$.length > 0) {
      this.repeatList$.data = this.repeatListData.slice();
      this.repeatList$.filter = this.searchFilter;
      const repeatData = this.repeatList$.sortData(this.repeatList$.filteredData, this.repeatList$.sort as MatSort);
      this.repeatList$.data = this.addGroups(repeatData, this.groupByColumns$);

      this.perfFilter = performance.now().toString();
      this.repeatList$.filter = this.perfFilter;
    } else {
      this.repeatList$.filter = this.searchFilter;
    }

    if (this.repeatList$.paginator) {
      this.repeatList$.paginator.firstPage();
    }
  }

  isChecked(rowIn): any {
    const initialVal = false;
    return this.configProps$?.readonlyContextList?.reduce((acc, currRow) => {
      return acc || rowIn[this.rowID] === currRow[this.rowID];
    }, initialVal);
  }

  fieldOnChange(row) {
    const value = row[this.rowID];
    const reqObj = {};
    if (this.compositeKeys?.length > 1) {
      const index = this.response.findIndex(element => element[this.rowID] === value);
      const selectedRow = this.response[index];
      this.compositeKeys.forEach(element => {
        reqObj[element] = selectedRow[element];
      });
    } else {
      reqObj[this.rowID] = value;
    }
    this.checkBoxValue = value;
    this.pConn$?.getListActions?.()?.setSelectedRows([reqObj]);
  }

  onCheckboxClick(row, event) {
    const value = row[this.rowID];
    const checked = event?.checked;
    const reqObj: any = {};
    if (this.compositeKeys?.length > 1) {
      const index = this.response.findIndex(element => element[this.rowID] === value);
      const selectedRow = this.response[index];
      this.compositeKeys.forEach(element => {
        reqObj[element] = selectedRow[element];
      });
      reqObj.$selected = checked;
    } else {
      reqObj[this.rowID] = value;
      reqObj.$selected = checked;
    }
    this.pConn$?.getListActions()?.setSelectedRows([reqObj]);
  }

  // rowClick(row) {
  //   switch (this.configProps$.rowClickAction) {
  //     case 'openAssignment':
  //       this.psService.sendMessage(true);
  //       this.openAssignment(row);
  //       break;
  //   }
  // }

  _getIconStyle(level): string {
    let sReturn = '';
    let nLevel = parseInt(level, 10);
    nLevel--;
    nLevel *= 15;
    sReturn = `padding-left: ${nLevel}px; vertical-align: middle`;

    return sReturn;
  }

  _getGroupName(fieldName) {
    for (let fieldIndex = 0; fieldIndex < this.fields$.length; fieldIndex++) {
      const field = this.fields$[fieldIndex];
      if (field.config.name == fieldName) {
        return field.config.label;
      }
    }
    return '';
  }

  _showButton(name, row) {
    let bReturn = false;
    const { pxRefObjectClass, pzInsKey, pxRefObjectKey } = row;
    switch (name) {
      case 'pxTaskLabel':
        if (pxRefObjectClass != '' && pzInsKey != '') {
          bReturn = true;
        }
        break;
      case 'pxRefObjectInsName':
        if (pxRefObjectClass != '' && pxRefObjectKey != '') {
          bReturn = true;
        }
        break;
      default:
        break;
    }

    return bReturn;
  }

  _listViewClick(column, row) {
    const name = column.id;
    if (column.displayAsLink) {
      const { pxObjClass } = row;
      let { pzInsKey } = row;
      if (column.isAssociation) {
        const associationCategory = name.split(':')[0];
        pzInsKey = row[`${associationCategory}:pzInsKey`];
      }
      if (column.isAssignmentLink) {
        this.pConn$.getActionsApi().openAssignment(pzInsKey, pxObjClass, {
          containerName: 'primary',
          channelName: ''
        } as any);
      } else {
        this.pConn$.getActionsApi().openWorkByHandle(pzInsKey, pxObjClass);
      }
    } else {
      switch (name) {
        case 'pxTaskLabel':
          this.openAssignment(row);
          break;
        case 'pxRefObjectInsName':
          this.openWork(row);
          break;
        default:
          break;
      }
    }
  }

  _headerSortClick(event, columnData) {
    // images 0 - filter, 1 - arrow, 2 - more

    /** Commenting this code for now as it is giving errors not sure if it ever worked */
    // let arrowImage = event.srcElement.getElementsByTagName('img')[1];
    // let arrowAttr = arrowImage.getAttribute('arrow');

    // this.clearOutArrows(event, columnData);

    // switch (arrowAttr) {
    //   case 'up':
    //     arrowImage.src = this.arrowDownSvgIcon$;
    //     arrowImage.setAttribute('arrow', 'down');
    //     break;
    //   case 'down':
    //     arrowImage.src = '';
    //     arrowImage.setAttribute('arrow', 'none');
    //     break;
    //   default:
    //     arrowImage.src = this.arrowUpSvgIcon$;
    //     arrowImage.setAttribute('arrow', 'up');
    //     break;
    // }

    this.compareType = columnData.type;
    this.compareRef = columnData.config.name;
    // this.arrowDirection = arrowImage.getAttribute('arrow');
    this.arrowDirection = this.arrowDirection === 'up' ? 'down' : 'up';

    this.filterSortGroupBy();
  }

  // Commenting below method, since the code which is using it, is already commented
  // clearOutArrows(event, columnData) {
  //   const arImages = event.srcElement.parentElement.getElementsByTagName('img');

  //   for (const theImage of arImages) {
  //     // let theImage = arImages[i]
  //     const arrow = theImage.getAttribute('arrow');
  //     if (arrow) {
  //       const arrowId = theImage.getAttribute('arrowid');
  //       if (arrow != 'none' && arrowId != columnData.config.name) {
  //         theImage.setAttribute('arrow', 'none');
  //         theImage.src = '';
  //       }
  //     }
  //   }
  // }

  sortCompare(a, b): number {
    let aValue = a[this.compareRef];
    let bValue = b[this.compareRef];

    if (this.compareType == 'Date' || this.compareType == 'DateTime') {
      aValue = getSeconds(aValue);
      bValue = getSeconds(bValue);
    }

    if (this.compareRef == 'pxRefObjectInsName') {
      const result = this.compareByColumnPxRefObjectInsName(aValue, bValue);
      if (result !== undefined) {
        return result;
      }
    }

    switch (this.arrowDirection) {
      case 'up':
        if (!aValue || aValue < bValue) {
          return -1;
        }
        if (!bValue || aValue > bValue) {
          return 1;
        }
        break;
      case 'down':
        if (!bValue || aValue > bValue) {
          return -1;
        }
        if (!aValue || aValue < bValue) {
          return 1;
        }
        break;
      default:
        break;
    }

    return 0;
  }

  compareByColumnPxRefObjectInsName(aValue, bValue) {
    const prefixX = aValue.split('-');
    const prefixY = bValue.split('-');
    switch (this.arrowDirection) {
      case 'up':
        if (prefixX[0] !== prefixY[0]) {
          if (prefixX[0] < prefixY[0]) return -1;
          if (prefixX[0] > prefixY[0]) return 1;
          return 0;
        }
        return prefixX[1] - prefixY[1];
      case 'down':
        if (prefixX[0] !== prefixY[0]) {
          if (prefixX[0] > prefixY[0]) return -1;
          if (prefixX[0] < prefixY[0]) return 1;
          return 0;
        }
        return prefixY[1] - prefixX[1];
      default:
        break;
    }

    return undefined;
  }

  updateFilterDisplay(type) {
    switch (type) {
      case 'Date':
        this.filterContainsType$ = 'notequal';
        this.bContains$ = false;
        this.bDateTime$ = true;
        this.bIsDate$ = true;
        this.bIsDateTime$ = false;
        this.bIsTime$ = false;
        break;
      case 'DateTime':
        this.filterContainsType$ = 'notequal';
        this.bContains$ = false;
        this.bDateTime$ = true;
        this.bIsDate$ = false;
        this.bIsDateTime$ = true;
        this.bIsTime$ = false;
        break;
      case 'Time':
        this.filterContainsType$ = 'notequal';
        this.bContains$ = false;
        this.bDateTime$ = true;
        this.bIsDate$ = false;
        this.bIsDateTime$ = false;
        this.bIsTime$ = true;
        break;
      default:
        this.filterContainsType$ = 'contains';
        this.bContains$ = true;
        this.bDateTime$ = false;
        this.bIsDate$ = false;
        this.bIsDateTime$ = false;
        this.bIsTime$ = false;
        break;
    }
  }

  _filter(event, columnData) {
    // add clickAway listener
    window.addEventListener('mouseup', this._clickAway.bind(this));

    this.currentFilterRefData = columnData;
    this.filterContainsLabel$ = columnData.config.label;

    setTimeout(() => {
      this.updateFilterDisplay(columnData.type);

      this.updateFilterVarsWithCurrent(columnData);

      this.bShowFilterPopover$ = true;
    });
  }

  _clickAway(event: any) {
    let bInPopUp = false;

    // run through list of elements in path, if menu not in th path, then want to
    // hide (toggle) the menu
    const eventPath = event.path;
    for (let pathIndex = 0; pathIndex < eventPath.length; pathIndex++) {
      if (
        eventPath[pathIndex].className == 'psdk-modal-file-top' ||
        eventPath[pathIndex].tagName == 'BUTTON' ||
        eventPath[pathIndex].tagName == 'MAT-OPTION' ||
        eventPath[pathIndex].tagName == 'MAT-INPUT'
      ) {
        bInPopUp = true;
        break;
      }
    }
    if (!bInPopUp) {
      // this.bShowFilterPopover$ = false;

      window.removeEventListener('mouseup', this._clickAway.bind(this));
    }
  }

  _filterContainsType(event) {
    this.filterContainsType$ = event.value;
  }

  _filterContainsValue(event) {
    this.filterContainsValue$ = event.target.value;
  }

  _filterContainsDateValue(event, value) {
    this.filterContainsValue$ = value;
  }

  _filterContainsDateTimeValue(event) {
    this.filterContainsValue$ = event.target.value;
  }

  _filterContainsTimeValue(event) {
    this.filterContainsValue$ = event.target.value;
  }

  _onFilterActionButtonClick(event: any) {
    // modal buttons
    switch (event.action) {
      case 'cancel':
        this.currentFilterRefData = [];
        break;
      case 'submit':
        this.updateFilterWithInfo();
        this.filterSortGroupBy();
        break;
      default:
        break;
    }

    this.bShowFilterPopover$ = false;

    window.removeEventListener('mouseup', this._clickAway.bind(this));
  }

  updateFilterWithInfo() {
    let bFound = false;
    for (const filterObj of this.filterByColumns) {
      if (filterObj.ref === this.currentFilterRefData.config.name) {
        filterObj.type = this.currentFilterRefData.type;
        filterObj.containsFilter = this.filterContainsType$;
        filterObj.containsFilterValue = this.filterContainsValue$;

        bFound = true;
        break;
      }
    }

    if (!bFound) {
      // add in
      const filterObj: any = {};
      filterObj.ref = this.currentFilterRefData.config.name;
      filterObj.type = this.currentFilterRefData.type;
      filterObj.containsFilter = this.filterContainsType$;
      filterObj.containsFilterValue = this.filterContainsValue$;

      this.filterByColumns.push(filterObj);
    }

    // iterate through filters and update filterOn icon
    for (const filterObj of this.filterByColumns) {
      const containsFilterValue = filterObj.containsFilterValue;
      const containsFilter = filterObj.containsFilter;
      const filterRef = filterObj.ref;
      const filterIndex = this.displayedColumns$.indexOf(filterRef);
      const arFilterImg = document.getElementsByName('filterOnIcon');
      const filterImg: any = arFilterImg[filterIndex];
      if (containsFilterValue == '' && containsFilter != 'null' && containsFilter != 'notnull') {
        // clear icon
        filterImg.src = '';
      } else {
        // show icon
        filterImg.src = this.filterOnSvgIcon$;
      }
    }
  }

  updateFilterVarsWithCurrent(columnData) {
    // find current ref, if exists, move data to variable to display

    let bFound = false;
    for (const filterObj of this.filterByColumns) {
      if (filterObj.ref === this.currentFilterRefData.config.name) {
        this.filterContainsType$ = filterObj.containsFilter;
        this.filterContainsValue$ = filterObj.containsFilterValue;

        bFound = true;
        break;
      }
    }

    if (!bFound) {
      switch (columnData.type) {
        case 'Date':
        case 'DateTime':
        case 'Time':
          this.filterContainsType$ = 'notequal';
          break;
        default:
          this.filterContainsType$ = 'contains';
          break;
      }

      this.filterContainsValue$ = '';
    }
  }

  filterData(item: any) {
    let bKeep = true;
    for (const filterObj of this.filterByColumns) {
      if (filterObj.containsFilterValue != '' || filterObj.containsFilter == 'null' || filterObj.containsFilter == 'notnull') {
        let filterValue: any;

        switch (filterObj.type) {
          case 'Date':
          case 'DateTime':
          case 'Time':
            bKeep = this.filterDataWithDate(item, filterObj, filterValue);
            break;
          default:
            bKeep = this.filterDataWithCommonTypes(item, filterObj, filterValue);
            break;
        }
      }

      // if don't keep stop filtering
      if (!bKeep) {
        break;
      }
    }

    return bKeep;
  }

  filterDataWithDate(item, filterObj, filterValue) {
    let bKeep;
    let value = item[filterObj.ref] != null || item[filterObj.ref] != '' ? getSeconds(item[filterObj.ref]) : null;
    filterValue = filterObj.containsFilterValue != null && filterObj.containsFilterValue != '' ? getSeconds(filterObj.containsFilterValue) : null;

    switch (filterObj.containsFilter) {
      case 'notequal':
        // becasue filterValue is in minutes, need to have a range of less than 60 secons
        if (value != null && filterValue != null) {
          // get rid of millisecons
          value /= 1000;
          filterValue /= 1000;

          const diff = value - filterValue;
          if (diff >= 0 && diff < 60) {
            bKeep = false;
          }
        }
        break;
      case 'after':
        if (value < filterValue) {
          bKeep = false;
        }
        break;
      case 'before':
        if (value > filterValue) {
          bKeep = false;
        }
        break;
      case 'null':
        if (value != null) {
          bKeep = false;
        }
        break;
      case 'notnull':
        if (value == null) {
          bKeep = false;
        }
        break;
      default:
        break;
    }

    return bKeep;
  }

  filterDataWithCommonTypes(item, filterObj, filterValue) {
    let bKeep;
    const value = item[filterObj.ref].toLowerCase();
    filterValue = filterObj.containsFilterValue.toLowerCase();

    switch (filterObj.containsFilter) {
      case 'contains':
        if (value.indexOf(filterValue) < 0) {
          bKeep = false;
        }
        break;
      case 'equals':
        if (value != filterValue) {
          bKeep = false;
        }
        break;
      case 'startswith':
        if (value.indexOf(filterValue) != 0) {
          bKeep = false;
        }
        break;
      default:
        break;
    }

    return bKeep;
  }

  filterSortGroupBy() {
    // get original data set
    let theData = this.repeatListData.slice();

    // last filter config data is global
    theData = theData.filter(this.filterData.bind(this));

    // last sort config data is global
    theData.sort(this.sortCompare.bind(this));

    const reGroupData = this.addGroups(theData, this.groupByColumns$);

    this.repeatList$.data = [];
    this.repeatList$.data.push(...reGroupData);

    if (this.searchFilter && this.searchFilter != '') {
      this.repeatList$.filter = this.searchFilter;
    } else {
      this.perfFilter = performance.now().toString();
      this.repeatList$.filter = this.perfFilter;
    }
    this.repeatList$.filter = '';

    if (this.repeatList$.paginator) {
      this.repeatList$.paginator.firstPage();
    }
  }

  //
  // Grouping code inspired by this example
  // https://stackblitz.com/edit/angular-material-table-row-grouping
  //

  _showUnGroupBy(columnData): boolean {
    for (const val of this.groupByColumns$) {
      if (val == columnData.config.name) {
        return true;
      }
    }

    return false;
  }

  _groupBy(event, columnData) {
    this.checkGroupByColumn(columnData.config.name, true);

    this.filterSortGroupBy();
  }

  _unGroupBy(event, columnData) {
    // event.stopPropagation();
    this.checkGroupByColumn(columnData.config.name, false);

    this.filterSortGroupBy();
  }

  checkGroupByColumn(field, add) {
    let found: number | null = null;
    for (const column of this.groupByColumns$) {
      if (column === field) {
        found = this.groupByColumns$.indexOf(column, 0);
      }
    }
    if (found != null && found >= 0) {
      if (!add) {
        this.groupByColumns$.splice(found, 1);
      }
    } else if (add) {
      this.groupByColumns$.push(field);
    }
  }

  addGroups(data: any[], groupByColumns: string[]): any[] {
    const rootGroup = new Group();
    rootGroup.expanded = true;
    return this.getSublevel(data, 0, groupByColumns, rootGroup);
  }

  getSublevel(data: any[], level: number, groupByColumns: string[], parent: Group): any[] {
    if (level >= groupByColumns.length) {
      return data;
    }
    const groups = this.uniqueBy(
      data.map(row => {
        const result = new Group();
        result.level = level + 1;
        result.parent = parent;
        for (let i = 0; i <= level; i++) {
          result[groupByColumns[i]] = row[groupByColumns[i]];
        }
        return result;
      }),
      JSON.stringify
    );

    const currentColumn = groupByColumns[level];
    let subGroups: any[] = [];
    groups.forEach(group => {
      const rowsInGroup = data.filter(row => group[currentColumn] === row[currentColumn]);
      group.totalCounts = rowsInGroup.length;
      const subGroup = this.getSublevel(rowsInGroup, level + 1, groupByColumns, group);
      subGroup.unshift(group);
      subGroups = subGroups.concat(subGroup);
    });
    return subGroups;
  }

  uniqueBy(a, key) {
    const seen = {};
    return a.filter(item => {
      const k = key(item);
      // eslint-disable-next-line no-return-assign, no-prototype-builtins
      return seen.hasOwnProperty(k) ? false : (seen[k] = true);
    });
  }

  isGroup(index, item): boolean {
    return item.level;
  }

  _groupHeaderClick(row) {
    row.expanded = !row.expanded;
    // this.repeatList$.filter = "";
    this.perfFilter = performance.now().toString();
    this.repeatList$.filter = this.perfFilter;
  }

  // below is for grid row grouping
  customFilterPredicate(data: any | Group, filter: string): boolean {
    return data instanceof Group ? data.visible : this.getDataRowVisibleWithFilter(data, filter);
  }

  getDataRowVisible(data: any): boolean {
    const groupRows = this.repeatList$.data.filter(row => {
      if (!(row instanceof Group)) {
        return false;
      }
      let match = true;
      this.groupByColumns$.forEach(column => {
        if (!row[column] || !data[column] || row[column] !== data[column]) {
          match = false;
        }
      });
      return match;
    });

    if (groupRows.length === 0) {
      return true;
    }
    const parent = groupRows[0] as Group;
    return parent.visible && parent.expanded;
  }

  getDataRowVisibleWithFilter(data, filter) {
    // fist check if row is visible with grouping
    let bVisible = this.getDataRowVisible(data);

    if (bVisible && filter && filter != '' && filter != this.perfFilter) {
      // now check if row is filtered.

      // assume not there unless we find it
      bVisible = false;
      for (const col of this.displayedColumns$) {
        // filter is lower case
        if (data[col] && data[col].toString().toLowerCase().indexOf(filter) >= 0) {
          bVisible = true;
          break;
        }
      }
    }

    return bVisible;
  }

  updateData(listData: any[], fieldData: any[]): any[] {
    const returnList: any[] = new Array<any>();
    listData.forEach(row => {
      // copy
      const rowData = JSON.parse(JSON.stringify(row));

      for (let fieldIndex = 0; fieldIndex < fieldData.length; fieldIndex++) {
        const config = fieldData[fieldIndex].config;
        let fieldName;
        let formattedDate;
        let myFormat;
        let theCurrencyOptions;

        switch (fieldData[fieldIndex].type) {
          case 'Date':
            fieldName = config.name;
            myFormat = config.formatter;
            if (!myFormat) {
              myFormat = 'Date';
            }
            formattedDate = this.utils.generateDate(rowData[fieldName], myFormat);

            rowData[fieldName] = formattedDate;
            break;
          case 'DateTime':
            fieldName = config.name;
            myFormat = config.formatter;
            if (!myFormat) {
              myFormat = 'DateTime-Long';
            }
            formattedDate = this.utils.generateDateTime(rowData[fieldName], myFormat);

            rowData[fieldName] = formattedDate;
            break;
          case 'Currency':
            fieldName = config.name;
            theCurrencyOptions = getCurrencyOptions(PCore.getEnvironmentInfo().getLocale() as string);
            // eslint-disable-next-line no-case-declarations
            const defaultOptions = {
              locale: getLocale(),
              position: 'before',
              decPlaces: 2
            };
            // eslint-disable-next-line no-case-declarations
            const params = { ...defaultOptions, ...theCurrencyOptions };
            rowData[fieldName] = formatters.Currency(rowData[fieldName], params);
            // val = format(value, column.type, theCurrencyOptions);
            break;
          default:
            break;
        }
      }
      returnList.push(rowData);
    });

    return returnList;
  }

  openAssignment(row) {
    const { pxRefObjectClass, pzInsKey } = row;
    const sTarget = this.pConn$.getContainerName();
    const options: any = { containerName: sTarget };
    this.pConn$.getActionsApi().openAssignment(pzInsKey, pxRefObjectClass, options);
  }

  openWork(row) {
    const pxRefObjectClass = row.pxRefObjectClass || row.pxObjClass;
    const { pxRefObjectKey } = row;
    if (pxRefObjectClass !== '' && pxRefObjectKey !== '') {
      this.pConn$.getActionsApi().openWorkByHandle(pxRefObjectKey, pxRefObjectClass);
    }
  }

  initializeData(data) {
    data.forEach((item, idx) => {
      item.__original_index = idx;
      item.__level = 1;
    });

    return data;
  }

  getType(field) {
    const { config = {}, type } = field;
    const { formatType } = config;
    if (formatType === 'datetime' || formatType === 'date') {
      // currently cosmos has only support for date ... it also need to support dateTime
      return 'date';
    }

    return type.toLowerCase();
  }

  initializeColumns(fields = []) {
    return fields.map((field: any, originalColIndex) => ({
      ...field,
      type: this.getType(field),
      name: field.config.value.substring(4),
      label: field.config.label.substring(3),
      id: originalColIndex,
      groupingEnabled: true,
      grouped: false,
      minWidth: 50,
      cellRenderer: this.getType(field) === 'text' ? null : field.type,
      filter: true
    }));
  }

  getHeaderCells(colFields, fields) {
    const AssignDashObjects = ['Assign-Worklist', 'Assign-WorkBasket'];
    return colFields.map((field: any, index) => {
      let theField = field.config.value.substring(field.config.value.indexOf(' ') + 1);
      if (theField.indexOf('.') === 0) {
        theField = theField.substring(1);
      }
      const colIndex = fields.findIndex(ele => ele.name === theField);
      const displayAsLink = field.config.displayAsLink;
      const headerRow: any = {};
      headerRow.id = fields[index].id;
      headerRow.type = field.type;
      headerRow.displayAsLink = displayAsLink;
      headerRow.numeric = field.type === 'Decimal' || field.type === 'Integer' || field.type === 'Percentage' || field.type === 'Currency' || false;
      headerRow.disablePadding = false;
      headerRow.label = fields[index].label;
      if (colIndex > -1) {
        headerRow.classID = fields[colIndex].classID;
      }
      if (displayAsLink) {
        headerRow.isAssignmentLink = AssignDashObjects.includes(headerRow.classID);
        if (field.config.value?.startsWith('@CA')) {
          headerRow.isAssociation = true;
        }
      }
      return headerRow;
    });
  }

  buildSelect(fieldDefs, colId, patchQueryFields = [], compositeKeys = []) {
    const listFields: any = [];
    if (colId) {
      const field = this.getField(fieldDefs, colId);
      listFields.push({
        field: field.name
      });
    } else {
      // NOTE: If we ever decide to not set up all the `fieldDefs` on select, ensure that the fields
      //  corresponding to `state.groups` are set up. Needed in Client-mode grouping/pagination.
      fieldDefs.forEach(field => {
        if (!listFields.find(f => f.field === field.name)) {
          listFields.push({
            field: field.name
          });
        }
      });
      patchQueryFields.forEach(k => {
        if (!listFields.find(f => f.field === k)) {
          listFields.push({
            field: k
          });
        }
      });
    }

    compositeKeys.forEach(k => {
      if (!listFields.find(f => f.field === k)) {
        listFields.push({
          field: k
        });
      }
    });
    return listFields;
  }

  getResultsText() {
    const recordsCount = this.repeatList$?.paginator?.length || 0;
    return `${recordsCount || 0} result${recordsCount > 1 ? 's' : ''}`;
  }

  getField(fieldDefs, columnId) {
    const fieldsMap = this.getFieldsMap(fieldDefs);
    return fieldsMap.get(columnId);
  }

  getFieldsMap(fieldDefs) {
    const fieldsMap = new Map();
    fieldDefs.forEach(element => {
      fieldsMap.set(element.id, element);
    });
    return fieldsMap;
  }

  addItemKeyInSelect(fieldDefs, itemKey, select, compositeKeys) {
    const elementFound = this.getField(fieldDefs, itemKey);

    if (
      itemKey &&
      !elementFound &&
      Array.isArray(select) &&
      !(compositeKeys !== null && compositeKeys?.length) &&
      !select.find(sel => sel.field === itemKey)
    ) {
      return [
        ...select,
        {
          field: itemKey
        }
      ];
    }

    return select;
  }
}