import { Component, OnInit, Input, ViewChild, forwardRef, OnDestroy } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormGroup } from '@angular/forms';
import { MatButtonModule } from '@angular/material/button';
import { MatDatepickerModule } from '@angular/material/datepicker';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatInputModule } from '@angular/material/input';
import { MatMenuModule } from '@angular/material/menu';
import { MatOptionModule } from '@angular/material/core';
import { MatSelectModule } from '@angular/material/select';
import { MatSort, MatSortModule } from '@angular/material/sort';
import { MatIcon } from '@angular/material/icon';
import { MatTableDataSource, MatTableModule } from '@angular/material/table';
import isEqual from 'fast-deep-equal';

import { ComponentMapperComponent } from '@pega/angular-sdk-components';
import { AngularPConnectData, AngularPConnectService } from '@pega/angular-sdk-components';
import { DatapageService } from '@pega/angular-sdk-components';
import { getReferenceList } from '@pega/angular-sdk-components';
import { buildFieldsForTable, filterDataByCommonFields, filterDataByDate, getContext } from './helpers';
import { evaluateAllowRowAction } from '@pega/angular-sdk-components';
import { Utils } from '@pega/angular-sdk-components';
import { getSeconds } from '@pega/angular-sdk-components';

interface SimpleTableManualProps {
  // If any, enter additional props that only exist on this component
  visibility?: boolean;
  grouping?: any;
  referenceList?: any[];
  children?: any[];
  renderMode?: string;
  presets?: any[];
  label?: string;
  showLabel?: boolean;
  dataPageName?: string;
  contextClass?: string;
  propertyLabel?: string;
  fieldMetadata?: any;
  allowActions?: any;
  allowTableEdit?: boolean;
  allowRowDelete?: any;
  editMode?: string;
  addAndEditRowsWithin?: any;
  viewForAddAndEditModal?: any;
  editModeConfig?: any;
  displayMode?: string;
  useSeparateViewForEdit: any;
  viewForEditModal: any;
  targetClassLabel: string;
}

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-simple-table-manual',
  templateUrl: './simple-table-manual.component.html',
  styleUrls: ['./simple-table-manual.component.scss'],
  imports: [
    CommonModule,
    MatTableModule,
    MatButtonModule,
    MatSortModule,
    MatMenuModule,
    MatFormFieldModule,
    MatDatepickerModule,
    MatOptionModule,
    MatSelectModule,
    MatInputModule,
    MatIcon,
    forwardRef(() => ComponentMapperComponent)
  ],
  providers: [DatapageService]
})
export class SimpleTableManualComponent implements OnInit, OnDestroy {
  @ViewChild(MatSort) sort: MatSort;

  @Input() pConn$: typeof PConnect;
  @Input() formGroup$: FormGroup;

  // Used with AngularPConnect
  angularPConnectData: AngularPConnectData = {};
  configProps$: SimpleTableManualProps;
  fields$: any[];

  bVisible$ = true;
  displayedColumns: string[] = [];
  rowData: MatTableDataSource<any>;
  originalData: any[] = [];
  processedFields: any[] = [];
  fieldDefs: any[] = [];
  requestedReadOnlyMode = false;
  readOnlyMode = false;
  editableMode: boolean;
  menuIconOverride$: string;
  pageReference: string;
  referenceList: any;
  contextClass: any;
  showAddRowButton: boolean;
  prevReferenceList: any[] = [];
  elementsData: MatTableDataSource<any>;
  originalElementsData: MatTableDataSource<any>;
  rawFields: any;
  label?: string = '';
  searchIcon$: string;

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

  perfFilter: string;
  searchFilter: string;

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

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

  groupByColumns$: string[] = [];
  compareType: string;
  compareRef: string;
  arrowDirection = 'down';
  filterByColumns: any[] = [];
  currentFilterRefData: any;
  filterContainsLabel$ = '';
  filterContainsType$ = 'contains';
  filterContainsValue$: any;
  bShowFilterPopover$ = false;
  bContains$ = true;
  bDateTime$ = false;

  bIsDate$ = false;
  bIsDateTime$ = false;
  bIsTime$ = false;
  currentFilterImageEl: any;

  arFilterMainButtons$: any[] = [];
  arFilterSecondaryButtons$: any[] = [];
  selectionMode: string;
  singleSelectionMode: boolean;
  multiSelectionMode: boolean;
  rowID: any;
  response: any;
  compositeKeys: any;
  parameters: any;
  allowEditingInModal = false;
  defaultView: any;
  referenceListStr: any;
  bUseSeparateViewForEdit: any;
  editView: any;
  defaultActionId: any;
  editActionId: any;
  settingsSvgIcon$: string;

  isInitialized = false;
  targetClassLabel: string;
  localizedVal = PCore.getLocaleUtils().getLocaleValue;
  localeCategory = 'SimpleTable';
  editType: any;
  constructor(
    private angularPConnect: AngularPConnectService,
    public utils: Utils,
    private dataPageService: DatapageService
  ) {}

  ngOnInit(): void {
    this.elementsData = new MatTableDataSource<any>([]);
    this.isInitialized = true;
    // First thing in initialization is registering and subscribing to the AngularPConnect service
    this.angularPConnectData = this.angularPConnect.registerAndSubscribeComponent(this, this.onStateChange);
    this.configProps$ = this.pConn$.getConfigProps() as SimpleTableManualProps;
    // Then, continue on with other initialization
    this.menuIconOverride$ = this.utils.getImageSrc('trash', this.utils.getSDKStaticContentUrl());
    // call checkAndUpdate when initializing
    this.checkAndUpdate();
    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.bGrouping$ = this.utils.getBooleanValue(this.configProps$.grouping);
    this.menuSvgIcon$ = this.utils.getImageSrc('more', this.utils.getSDKStaticContentUrl());

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

    this.searchIcon$ = this.utils.getImageSrc('search', this.utils.getSDKStaticContentUrl());

    this.settingsSvgIcon$ = this.utils.getImageSrc('more', this.utils.getSDKStaticContentUrl());
  }

  ngOnDestroy(): void {
    if (this.angularPConnectData.unsubscribeFn) {
      this.angularPConnectData.unsubscribeFn();
    }
  }

  checkAndUpdate() {
    // Should always check the bridge to see if the component should
    // update itself (re-render)
    const bUpdateSelf = this.angularPConnect.shouldComponentUpdate(this);

    // ONLY call updateSelf when the component should update
    if (bUpdateSelf) {
      this.updateSelf();
    }
  }

  // updateSelf
  updateSelf(): void {
    // moved this from ngOnInit() and call this from there instead...
    this.configProps$ = this.pConn$.resolveConfigProps(this.pConn$.getConfigProps()) as SimpleTableManualProps;

    if (this.configProps$.visibility != null) {
      this.bVisible$ = this.bVisible$ = this.utils.getBooleanValue(this.configProps$.visibility);
    }

    // NOTE: getConfigProps() has each child.config with datasource and value undefined
    //  but getRawMetadata() has each child.config with datasource and value showing their unresolved values (ex: "@P thePropName")
    //  We need to use the prop name as the "glue" to tie the Angular Material table dataSource, displayColumns and data together.
    //  So, in the code below, we'll use the unresolved config.value (but replacing the space with an underscore to keep things happy)
    const rawMetadata = this.pConn$.getRawMetadata();

    // Adapted from Nebula
    const {
      referenceList = [], // if referenceList not in configProps$, default to empy list
      renderMode,
      children, // destructure children into an array var: "resolvedFields"
      presets,
      allowActions,
      allowTableEdit,
      allowRowDelete,
      label: labelProp,
      propertyLabel,
      fieldMetadata,
      editMode,
      addAndEditRowsWithin,
      viewForAddAndEditModal,
      editModeConfig,
      displayMode,
      useSeparateViewForEdit,
      viewForEditModal,
      targetClassLabel
    } = this.configProps$;

    const simpleTableManualProps: any = {};
    if (this.checkIfAllowActionsOrRowEditingExist(allowActions) && editMode) {
      simpleTableManualProps.hideAddRow = allowActions?.allowAdd === false;
      simpleTableManualProps.hideDeleteRow = allowActions?.allowDelete === false;
      simpleTableManualProps.hideEditRow = allowActions?.allowEdit === false;
      simpleTableManualProps.disableDragDrop = allowActions?.allowDragDrop === false;
    } else if (allowTableEdit === false) {
      simpleTableManualProps.hideAddRow = true;
      simpleTableManualProps.hideDeleteRow = true;
      simpleTableManualProps.disableDragDrop = true;
    }

    this.referenceListStr = getContext(this.pConn$).referenceListStr;
    this.label = labelProp || propertyLabel;
    this.parameters = fieldMetadata?.datasource?.parameters;
    this.targetClassLabel = targetClassLabel;
    let { contextClass } = this.configProps$;
    this.referenceList = referenceList;
    if (!contextClass) {
      let listName = this.pConn$.getComponentConfig().referenceList;
      listName = PCore.getAnnotationUtils().getPropertyName(listName);
      contextClass = this.pConn$.getFieldMetadata(listName)?.pageClass;
    }
    this.contextClass = contextClass;

    const resolvedFields = children?.[0]?.children || presets?.[0].children?.[0].children;
    // get raw config as @P and other annotations are processed and don't appear in the resolved config.
    //  Destructure "raw" children into array var: "rawFields"
    //  NOTE: when config.listType == "associated", the property can be found in either
    //    config.value (ex: "@P .DeclarantChoice") or
    //    config.datasource (ex: "@ASSOCIATED .DeclarantChoice")
    //  Neither of these appear in the resolved (this.configProps$)
    const rawConfig: any = rawMetadata?.config;
    const rawFields = rawConfig?.children?.[0]?.children || rawConfig?.presets?.[0].children?.[0]?.children;
    this.rawFields = rawFields;
    // At this point, fields has resolvedFields and rawFields we can use

    // start of from Nebula
    // get context name and referenceList which will be used to prepare config of PConnect
    // const { contextName, referenceListStr, pageReferenceForRows } = getContext(this.pConn$);

    const resolvedList = getReferenceList(this.pConn$);
    this.pageReference = `${this.pConn$.getPageReference()}${resolvedList}`;
    this.pConn$.setReferenceList(resolvedList);

    // This gives up the "properties" we need to map to row/column values later
    // const processedData = populateRowKey(referenceList);

    this.requestedReadOnlyMode = renderMode === 'ReadOnly';
    this.readOnlyMode = renderMode === 'ReadOnly';
    this.editableMode = renderMode === 'Editable';
    const isDisplayModeEnabled = displayMode === 'DISPLAY_ONLY';
    this.showAddRowButton = !this.readOnlyMode && !simpleTableManualProps.hideAddRow;
    this.allowEditingInModal =
      (editMode ? editMode === 'modal' : addAndEditRowsWithin === 'modal') && !(renderMode === 'ReadOnly' || isDisplayModeEnabled);
    const showDeleteButton = this.editableMode && !simpleTableManualProps.hideDeleteRow && evaluateAllowRowAction(allowRowDelete, this.rowData);
    this.defaultView = editModeConfig ? editModeConfig.defaultView : viewForAddAndEditModal;
    this.bUseSeparateViewForEdit = editModeConfig ? editModeConfig.useSeparateViewForEdit : useSeparateViewForEdit;
    this.editView = editModeConfig ? editModeConfig.editView : viewForEditModal;
    this.editType = editModeConfig?.editType;
    this.defaultActionId = this.editType === 'action' ? editModeConfig?.defaultAction : undefined;
    this.editActionId =
      this.editType === 'action' && editModeConfig?.useSeparateActionForEdit ? editModeConfig?.editAction : editModeConfig?.defaultAction;
    const primaryFieldsViewIndex = resolvedFields.findIndex(field => field.config.value === 'pyPrimaryFields');
    // const showDeleteButton = !this.readOnlyMode && !hideDeleteRow;

    // Nebula has other handling for isReadOnlyMode but has Cosmos-specific code
    //  so ignoring that for now...
    // fieldDefs will be an array where each entry will have a "name" which will be the
    //  "resolved" property name (that we can use as the colId) though it's not really
    //  resolved. The buildFieldsForTable helper just removes the "@P " (which is what
    //  Nebula does). It will also have the "label", and "meta" contains the original,
    //  unchanged config info. For now, much of the info here is carried over from
    //  Nebula and we may not end up using it all.
    this.fieldDefs = buildFieldsForTable(rawFields, this.pConn$, showDeleteButton, {
      primaryFieldsViewIndex,
      fields: resolvedFields
    });
    this.fieldDefs = this.fieldDefs?.filter(field => !(field.meta?.config?.hide === true));
    this.initializeDefaultPageInstructions();

    // end of from Nebula

    // Here, we use the "name" field in fieldDefs since that has the assoicated property
    //  (if one exists for the field). If no "name", use "cellRenderer" (typically get DELETE_ICON)
    //  for our columns.
    this.displayedColumns = this.fieldDefs?.map(field => {
      return field.name ? field.name : field.cellRenderer;
    });

    // And now we can process the resolvedFields to add in the "name"
    //  from from the fieldDefs. This "name" is the value that
    //  we'll share to connect things together in the table.

    const labelsMap = this.fieldDefs.reduce((acc, curr) => {
      return { ...acc, [curr.name]: curr.label };
    }, {});

    this.processedFields = [];

    this.processedFields = resolvedFields.map((field, i) => {
      field.config.name = this.displayedColumns[i]; // .config["value"].replace(/ ./g,"_");   // replace space dot with underscore
      field.config.label = labelsMap[field.config.name] || field.config.label;
      return field;
    });

    // for adding rows to table when editable and not modal view
    if (this.prevReferenceList.length !== this.referenceList.length) {
      this.buildElementsForTable();
    }

    // for edit and adding rows in modal view and to generate readonly list
    if (!isEqual(this.prevReferenceList, this.referenceList) && (this.readOnlyMode || this.allowEditingInModal)) {
      this.generateRowsData();
    }

    this.prevReferenceList = this.referenceList;

    // These are the data structures referred to in the html file.
    //  These are the relationships that make the table work
    //  displayedColumns: key/value pairs where key is order of column and
    //    value is the property shown in that column. Ex: 1: "FirstName"
    //  processedFields: key/value pairs where each key is order of column
    //    and each value is an object of more detailed information about that
    //    column.
    //  rowData: array of each row's key/value pairs. Inside each row,
    //    each key is an entry in displayedColumns: ex: "FirstName": "Charles"
    //    Ex: { 1: {config: {label: "First Name", readOnly: true: name: "FirstName"}}, type: "TextInput" }
    //    The "type" indicates the type of component that should be used for editing (when editing is enabled)
    //
    //  Note that the "property" shown in the column ("FirstName" in the above examples) is what
    //  ties the 3 data structures together.
  }

  checkIfAllowActionsOrRowEditingExist(newflagobject) {
    return (newflagobject && Object.keys(newflagobject).length > 0) || this.pConn$.getComponentConfig().allowRowEdit;
  }

  initializeDefaultPageInstructions() {
    if (this.isInitialized) {
      this.isInitialized = false;
      if (this.allowEditingInModal) {
        this.pConn$.getListActions().initDefaultPageInstructions(
          this.pConn$.getReferenceList(),
          this.fieldDefs.filter(item => item.name).map(item => item.name)
        );
      } else {
        // @ts-ignore - An argument for 'propertyNames' was not provided.
        this.pConn$.getListActions().initDefaultPageInstructions(this.pConn$.getReferenceList());
      }
    }
  }

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

  sortCompare(a, b): number {
    let aValue = a[0][this.compareRef];
    let bValue = b[0][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;
    if (eventPath) {
      for (let eventIndex = 0; eventIndex < eventPath.length; eventIndex++) {
        if (
          eventPath[eventIndex].className == 'psdk-modal-file-top' ||
          eventPath[eventIndex].tagName == 'BUTTON' ||
          eventPath[eventIndex].tagName == 'MAT-OPTION' ||
          eventPath[eventIndex].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(element: any) {
    const item = element[0];
    let bKeep = true;
    for (const filterObj of this.filterByColumns) {
      if (filterObj.containsFilterValue != '' || filterObj.containsFilter == 'null' || filterObj.containsFilter == 'notnull') {
        switch (filterObj.type) {
          case 'Date':
          case 'DateTime':
          case 'Time':
            bKeep = filterDataByDate(item, filterObj);
            break;
          default:
            bKeep = filterDataByCommonFields(item, filterObj);
            break;
        }
      } else if (filterObj.containsFilterValue === '') {
        bKeep = true;
      }

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

    return bKeep;
  }

  filterSortGroupBy() {
    let theData = this.originalData.slice().map((item, index) => {
      return [item, index];
    });

    // 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));
    this.rowData.data = theData.map(item => item[0]);

    const newElements: any = new Array(this.rowData.data.length);
    theData.forEach((item, index) => {
      newElements[index] = this.originalElementsData[item[1]];
    });
    this.elementsData = newElements;
  }

  _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();
  }

  _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);
    }
  }

  _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 '';
  }

  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-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.rowData.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.rowData.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;
  }

  getDisplayColumns(fields = []) {
    return fields.map((field: any) => {
      let theField = field.config.value.substring(field.config.value.indexOf(' ') + 1);
      if (theField.indexOf('.') == 0) {
        theField = theField.substring(1);
      }

      return theField;
    });
  }

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

    return sReturn;
  }

  // Callback passed when subscribing to store change
  onStateChange() {
    this.checkAndUpdate();
  }

  // return the value that should be shown as the contents for the given row data
  //  of the given row field
  getRowValue(inRowData: object, inColKey: string): any {
    // See what data (if any) we have to display
    const refKeys: string[] = inColKey.split('.');
    let valBuilder = inRowData;
    for (const key of refKeys) {
      valBuilder = valBuilder[key] ? valBuilder[key] : valBuilder;
    }
    return valBuilder;
  }

  generateRowsData() {
    const { dataPageName, referenceList } = this.configProps$;
    const context = this.pConn$.getContextName();
    // if dataPageName property value exists then make a datapage fetch call and get the list of data.
    if (dataPageName) {
      this.dataPageService.getDataPageData(dataPageName, this.parameters, context).then(listData => {
        const data = this.formatRowsData(listData);
        this.originalData = data;
        this.rowData = new MatTableDataSource(data);
      });
    } else {
      // The referenceList prop has the JSON data for each row to be displayed
      //  in the table. So, iterate over referenceList to create the dataRows that
      //  we're using as the table's dataSource
      const data = this.formatRowsData(referenceList);
      this.originalData = data;
      this.rowData = new MatTableDataSource(data);
    }
  }

  formatRowsData(data) {
    return data?.map(item => {
      return this.displayedColumns.reduce((dataForRow, colKey) => {
        dataForRow[colKey] = this.getRowValue(item, colKey);
        return dataForRow;
      }, {});
    });
  }

  addRecord() {
    if (this.allowEditingInModal && (this.defaultView || this.defaultActionId)) {
      this.pConn$
        .getActionsApi()
        .openEmbeddedDataModal(
          this.defaultView,
          this.pConn$ as any,
          this.referenceListStr,
          this.referenceList.length,
          PCore.getConstants().RESOURCE_STATUS.CREATE,
          this.targetClassLabel,
          this.editType,
          this.defaultActionId
        );
    } else {
      this.pConn$.getListActions().insert({ classID: this.contextClass }, this.referenceList.length);
    }

    this.pConn$.clearErrorMessages({
      property: this.pConn$.getStateProps()?.referenceList?.substring(1)
    });
  }

  editRecord(data, index) {
    if (data) {
      this.pConn$
        .getActionsApi()
        // @ts-expect-error
        .openEmbeddedDataModal(
          this.bUseSeparateViewForEdit ? this.editView : this.defaultView,
          this.pConn$ as any,
          this.referenceListStr,
          index,
          PCore.getConstants().RESOURCE_STATUS.UPDATE,
          this.targetClassLabel
        );
    }
  }

  deleteRecord(index) {
    this.pConn$.getListActions().deleteEntry(index);
  }

  buildElementsForTable() {
    const context = this.pConn$.getContextName();
    const eleData: any = [];
    this.referenceList.forEach((element, index) => {
      const data: any = [];
      this.rawFields?.forEach(item => {
        if (!item?.config?.hide) {
          item = {
            ...item,
            config: {
              ...item.config,
              label: '',
              displayMode: this.readOnlyMode || this.allowEditingInModal ? 'DISPLAY_ONLY' : undefined
            }
          };
          const referenceListData = getReferenceList(this.pConn$);
          const isDatapage = referenceListData.startsWith('D_');
          const pageReferenceValue = isDatapage
            ? `${referenceListData}[${index}]`
            : `${this.pConn$.getPageReference()}${referenceListData.substring(referenceListData.lastIndexOf('.'))}[${index}]`;
          const config = {
            meta: item,
            options: {
              context,
              pageReference: pageReferenceValue,
              referenceList: referenceListData,
              hasForm: true
            }
          };
          const view = PCore.createPConnect(config);
          data.push(view);
        }
      });
      eleData.push(data);
    });
    this.originalElementsData = eleData;
    this.elementsData = eleData;
  }
}