import UiuxConfig from "../../../../IconsConstants";
import ISparnaturalSpecification from "../../../../../spec-providers/ISparnaturalSpecification";
import { getSettings } from "../../../../../../sparnatural/settings/defaultSettings";
import ArrowComponent from "../../../../buttons/ArrowComponent";
import UnselectBtn from "../../../../buttons/UnselectBtn";
import HTMLComponent from "../../../../HtmlComponent";
import AddWidgetValueBtn from "../../../../buttons/AddWidgetValueBtn";
import {
  AbstractWidget,
  ValueRepetition,
  WidgetValue,
} from "../../../../widgets/AbstractWidget";
import CriteriaGroup from "../CriteriaGroup";
import { SelectAllValue } from "../edit-components/EditComponents";
import EditBtn from "../../../../buttons/EditBtn";
import { MapValue } from "../../../../widgets/MapWidget";


/*
  This class is responsible for rendering the WidgetValues, selected by a widget.
  This values are added in a 'list' after the EndClassGroup
*/
export class EndClassWidgetGroup extends HTMLComponent {
  widgetValues: Array<EndClassWidgetValue> = [];
  specProvider: ISparnaturalSpecification;
  addWidgetValueBtn: AddWidgetValueBtn;
  constructor(parentComponent: HTMLComponent, specProvider: ISparnaturalSpecification) {
    super("EndClassWidgetGroup", parentComponent, null);
    this.specProvider = specProvider;
  }

  render() {
    super.render();
    this.#addEventListener();
    this.#addEditEventListener();
    return this;
  }

  #addEventListener() {
    this.html[0].addEventListener(
      "onRemoveEndClassWidgetValue",
      (e: CustomEvent) => {
        e.stopImmediatePropagation();
        this.#onRemoveValue(e);
      }
    );
  }

  /**
   * Listens for the event to edit a value (e.g. edit a map selection)
   */
  #addEditEventListener() {
    this.html[0].addEventListener(
      "onEditEndClassWidgetValue",
      (e: CustomEvent) => {
        e.stopImmediatePropagation();

        let valueToDel: EndClassWidgetValue = e.detail;

        let unselectedValue: EndClassWidgetValue;
        this.widgetValues = this.widgetValues.filter((val: EndClassWidgetValue) => {
          if (val.widgetVal.key() === valueToDel.widgetVal.key()) {
            unselectedValue = val;
            return false;
          }
          return true;
        });
        if (unselectedValue === undefined)
          throw Error("Unselected val not found in the widgetValues list!");
        unselectedValue.html.remove();


        this.html[0].dispatchEvent(
          new CustomEvent("renderWidgetWrapper", {
            bubbles: true,
            detail: {
              selectedValues: this.widgetValues,
              editedValue: valueToDel.widgetVal
            },
          })
        );
      }
    );
  }

  // input : the 'key' of the value to be deleted
  #onRemoveValue(e: CustomEvent) {
    let valueToDel: EndClassWidgetValue = e.detail;

    let unselectedValue: EndClassWidgetValue;
    this.widgetValues = this.widgetValues.filter((val: EndClassWidgetValue) => {
      if (val.widgetVal.key() === valueToDel.widgetVal.key()) {
        unselectedValue = val;
        return false;
      }
      return true;
    });
    if (unselectedValue === undefined)
      throw Error("Unselected val not found in the widgetValues list!");
    unselectedValue.html.remove();

    if (this.widgetValues.length < 1) {
      // reattach eventlistener. it got removed
      this.#addEventListener();
      //if there is an addWidgetValueBtn then remove it as well
      this.addWidgetValueBtn?.html?.remove();

      this.html[0].dispatchEvent(
        new CustomEvent("renderWidgetWrapper", {
          bubbles: true,
          detail: { selectedValues: this.widgetValues },
        })
      );
    }

    // if the number of widgetValues is now less than the maximum
    if (this.widgetValues.length < getSettings().maxOr && this.addWidgetValueBtn?.html) {
      this.addWidgetValueBtn.html.show();
    }

    this.html[0].dispatchEvent(
      new CustomEvent("updateWidgetList", {
        bubbles: true,
        detail: { unselectedVal: unselectedValue },
      })
    );
    this.html[0].dispatchEvent(
      new CustomEvent("redrawBackgroundAndLinks", { bubbles: true })
    );
  }

  // user selects a value for example a country from the listwidget
  renderWidgetVal(selectedVal: WidgetValue) {
    // check if value already got selected before
    if (
      this.widgetValues.some((val) => val.widgetVal.key() === selectedVal.key())
    )
      return;
    
    // if not, then create the EndclassWidgetValue and add it to the list
    this.#renderEndClassWidgetVal(selectedVal);
  }

  #renderEndClassWidgetVal(widgetVal: WidgetValue) {
    let endClassWidgetVal = new EndClassWidgetValue(this, widgetVal);
    this.widgetValues.push(endClassWidgetVal);

    this.#renderNewSelectedValue(endClassWidgetVal);

    // if the widget allows multiple values to be selected then AddWidgetValueBtn
    // undefined for NON_SELECTABLE_PROPERTY
    const widgetComp:AbstractWidget | undefined = (this.parentComponent as CriteriaGroup).EndClassGroup.getWidgetComponent()
    if(widgetComp && widgetComp.valueRepetition == ValueRepetition.MULTIPLE && !(widgetVal instanceof SelectAllValue) ) {
      // now (re)render the addMoreValuesButton
      this.addWidgetValueBtn?.html
        ? this.addWidgetValueBtn.render()
        : (this.addWidgetValueBtn = new AddWidgetValueBtn(
            this,
            this.#addMoreValues
          ).render());
    }

    
    // If we reached maxOr hide the AddWidgetValueBtn
    if (this.widgetValues.length == getSettings().maxOr) {
      this.addWidgetValueBtn.html.hide();
    }

    // asks to remove the value selection part, with 1 and 2
    this.html[0].dispatchEvent(
      new CustomEvent("removeEditComponents", { bubbles: true })
    );

    this.html[0].dispatchEvent(
      new CustomEvent("onGrpInputCompleted", { bubbles: true })
    );
  }

  // All items which got selected in the widget will be added add the back of the EndClassGroup.
  #renderNewSelectedValue(endClassWidgetVal: EndClassWidgetValue) {
    endClassWidgetVal.render();
  }

  // when more values should be added then render the inputypecomponent again
  #addMoreValues = () => {
    // tell it is not completed so that it is higher
    this.html[0].dispatchEvent(
      new CustomEvent("onGrpInputNotCompleted", { bubbles: true })
    );

    this.html[0].dispatchEvent(
      new CustomEvent("renderWidgetWrapper", {
        bubbles: true,
        detail: { selectedValues: this.widgetValues },
      })
    );
    //this.#addEventListener();
  };

  getWidgetValues(): WidgetValue[] {
    let vals = this.widgetValues.map((val) => {
      return val.widgetVal;
    });
    return vals;
  }

  /**
   * @returns true if the widget value is the "Any" value
   */
  hasAnyValue():boolean {
    return this.getWidgetValues().some((v) => (v instanceof SelectAllValue))
  }
}

export class EndClassWidgetValue extends HTMLComponent {
  backArrow = new ArrowComponent(this, UiuxConfig.COMPONENT_ARROW_BACK);
  frontArrow = new ArrowComponent(this, UiuxConfig.COMPONENT_ARROW_FRONT);
  unselectBtn: UnselectBtn;
  editBtn:EditBtn;
  value_lbl: string;
  widgetVal: WidgetValue;
  constructor(ParentComponent: EndClassWidgetGroup, selectedVal: WidgetValue) {
    super("EndClassWidgetValue", ParentComponent, null);
    // set a tooltip if the label is a bit long
    this.widgetVal = selectedVal;
    this.value_lbl = selectedVal.value.label;
  }

  render(): this {
    super.render();
    this.backArrow.render();
    // set a tooltip if the label is a bit long
    var tooltip = (this.value_lbl.length > 25)?'title="'+this.#stripLabelHtml(this.value_lbl)+'"':"";
    let valuelbl = `<p ${tooltip}><span> ${this.value_lbl} </span></p>`;
    this.html.append($(valuelbl));
    this.frontArrow.render();
    this.unselectBtn = new UnselectBtn(this, () => {
      this.html[0].dispatchEvent(
        new CustomEvent("onRemoveEndClassWidgetValue", {
          bubbles: true,
          detail: this,
        })
      );
    }).render();

    if(this.widgetVal instanceof MapValue) {
      this.editBtn = new EditBtn(this, () => {
        this.html[0].dispatchEvent(
          new CustomEvent("onEditEndClassWidgetValue", {
            bubbles: true,
            detail: this,
          })
        );
      }).render();
    }
    
    return this;
  }
  
  #stripLabelHtml = (html:string) =>{
    let tmp = document.createElement("DIV");
    tmp.innerHTML = html;
    return tmp.textContent || tmp.innerText || "";
  }
}