import { EventType } from "constants/AppsmithActionConstants/ActionConstants";
import type { WidgetType } from "constants/WidgetConstants";
import type { ValidationResponse } from "constants/WidgetValidation";
import { ValidationTypes } from "constants/WidgetValidation";
import { isArray } from "lodash";
import React from "react";
import type { WidgetProps, WidgetState } from "widgets/BaseWidget";
import BaseWidget from "widgets/BaseWidget";

import { Alignment } from "@blueprintjs/core";
import { LabelPosition } from "components/constants";
import { Layers } from "constants/Layers";
import type { Stylesheet } from "entities/AppTheming";
import { EvaluationSubstitutionType } from "entities/DataTree/dataTreeFactory";
import type { DraftValueType } from "rc-select/lib/Select";
import { AutocompleteDataType } from "utils/autocomplete/CodemirrorTernService";
import { GRID_DENSITY_MIGRATION_V1, MinimumPopupRows } from "widgets/constants";
import MultiSelectComponent from "../component";
import { DefaultAutocompleteDefinitions } from "widgets/WidgetUtils";
import type { AutocompletionDefinitions } from "widgets/constants";

function defaultOptionValueValidation(value: unknown): ValidationResponse {
  let values: string[] = [];
  if (typeof value === "string") {
    try {
      values = JSON.parse(value);
      if (!Array.isArray(values)) {
        throw new Error();
      }
    } catch {
      values = value.length ? value.split(",") : [];
      if (values.length > 0) {
        values = values.map((_v: string) => _v.trim());
      }
    }
  }
  if (Array.isArray(value)) {
    values = Array.from(new Set(value));
  }

  return {
    isValid: true,
    parsed: values,
  };
}

class MultiSelectWidget extends BaseWidget<
  MultiSelectWidgetProps,
  WidgetState
> {
  static getAutocompleteDefinitions(): AutocompletionDefinitions {
    return {
      "!doc":
        "MultiSelect is used to capture user input/s from a specified list of permitted inputs. A MultiSelect captures multiple choices from a list of options",
      "!url": "https://docs.appsmith.com/widget-reference/dropdown",
      isVisible: DefaultAutocompleteDefinitions.isVisible,
      filterText: {
        "!type": "string",
        "!doc": "The filter text for Server side filtering",
      },
      selectedOptionValues: {
        "!type": "[string]",
        "!doc": "The array of values selected in a multi select dropdown",
        "!url": "https://docs.appsmith.com/widget-reference/dropdown",
      },
      selectedOptionLabels: {
        "!type": "[string]",
        "!doc":
          "The array of selected option labels in a multi select dropdown",
        "!url": "https://docs.appsmith.com/widget-reference/dropdown",
      },
      isDisabled: "bool",
      options: "[$__dropdownOption__$]",
    };
  }

  static getPropertyPaneConfig() {
    return [
      {
        sectionName: "General",
        children: [
          {
            helpText:
              "Allows users to select multiple options. Values must be unique",
            propertyName: "options",
            label: "Options",
            controlType: "INPUT_TEXT",
            placeholderText: '[{ "label": "Option1", "value": "Option2" }]',
            isBindProperty: true,
            isTriggerProperty: false,
            isJSConvertible: false,
            validation: {
              type: ValidationTypes.ARRAY,
              params: {
                unique: ["value"],
                children: {
                  type: ValidationTypes.OBJECT,
                  params: {
                    required: true,
                    allowedKeys: [
                      {
                        name: "label",
                        type: ValidationTypes.TEXT,
                        params: {
                          default: "",
                          required: true,
                        },
                      },
                      {
                        name: "value",
                        type: ValidationTypes.TEXT,
                        params: {
                          default: "",
                        },
                      },
                    ],
                  },
                },
              },
            },
            evaluationSubstitutionType:
              EvaluationSubstitutionType.SMART_SUBSTITUTE,
          },
          {
            helpText: "Selects the option with value by default",
            propertyName: "defaultOptionValue",
            label: "Default Value",
            controlType: "INPUT_TEXT",
            placeholderText: "[GREEN]",
            isBindProperty: true,
            isTriggerProperty: false,
            validation: {
              type: ValidationTypes.FUNCTION,
              params: {
                fn: defaultOptionValueValidation,
                expected: {
                  type: "Array of values",
                  example: `['option1', 'option2']`,
                  autocompleteDataType: AutocompleteDataType.ARRAY,
                },
              },
            },
          },
          {
            helpText: "Sets a Placeholder Text",
            propertyName: "placeholderText",
            label: "Placeholder",
            controlType: "INPUT_TEXT",
            placeholderText: "Search",
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
          },
          {
            propertyName: "isRequired",
            label: "Required",
            helpText: "Makes input to the widget mandatory",
            controlType: "SWITCH",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.BOOLEAN },
          },
          {
            helpText: "Controls the visibility of the widget",
            propertyName: "isVisible",
            label: "Visible",
            controlType: "SWITCH",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.BOOLEAN },
          },
          {
            propertyName: "isDisabled",
            label: "Disabled",
            helpText: "Disables input to this widget",
            controlType: "SWITCH",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.BOOLEAN },
          },
          {
            propertyName: "animateLoading",
            label: "Animate Loading",
            controlType: "SWITCH",
            helpText: "Controls the loading of the widget",
            defaultValue: true,
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.BOOLEAN },
          },
          {
            helpText: "Enables server side filtering of the data",
            propertyName: "serverSideFiltering",
            label: "Server Side Filtering",
            controlType: "SWITCH",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.BOOLEAN },
          },
          {
            helpText:
              "Controls the visibility of select all option in dropdown.",
            propertyName: "allowSelectAll",
            label: "Allow Select All",
            controlType: "SWITCH",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.BOOLEAN },
          },
        ],
      },
      {
        sectionName: "Label",
        children: [
          {
            helpText: "Sets the label text of the widget",
            propertyName: "labelText",
            label: "Text",
            controlType: "INPUT_TEXT",
            placeholderText: "Enter label text",
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
          },
          {
            helpText: "Sets the label position of the widget",
            propertyName: "labelPosition",
            label: "Position",
            controlType: "DROP_DOWN",
            options: [
              { label: "Left", value: LabelPosition.Left },
              { label: "Top", value: LabelPosition.Top },
              { label: "Auto", value: LabelPosition.Auto },
            ],
            defaultValue: LabelPosition.Top,
            isBindProperty: false,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
          },
          {
            helpText: "Sets the label alignment of the widget",
            propertyName: "labelAlignment",
            label: "Alignment",
            controlType: "LABEL_ALIGNMENT_OPTIONS",
            options: [
              {
                icon: "LEFT_ALIGN",
                value: Alignment.LEFT,
              },
              {
                icon: "RIGHT_ALIGN",
                value: Alignment.RIGHT,
              },
            ],
            isBindProperty: false,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
            hidden: (props: MultiSelectWidgetProps) =>
              props.labelPosition !== LabelPosition.Left,
            dependencies: ["labelPosition"],
          },
          {
            helpText:
              "Sets the label width of the widget as the number of columns",
            propertyName: "labelWidth",
            label: "Width (in columns)",
            controlType: "NUMERIC_INPUT",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            min: 0,
            validation: {
              type: ValidationTypes.NUMBER,
              params: {
                natural: true,
              },
            },
            hidden: (props: MultiSelectWidgetProps) =>
              props.labelPosition !== LabelPosition.Left,
            dependencies: ["labelPosition"],
          },
        ],
      },
      {
        sectionName: "Styles",
        children: [
          {
            propertyName: "accentColor",
            label: "Accent Color",
            controlType: "COLOR_PICKER",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
            invisible: true,
          },
          {
            propertyName: "labelTextColor",
            label: "Label Text Color",
            controlType: "COLOR_PICKER",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
          },
          {
            propertyName: "labelTextSize",
            label: "Label Text Size",
            controlType: "DROP_DOWN",
            defaultValue: "0.875rem",
            options: [
              {
                label: "S",
                value: "0.875rem",
                subText: "0.875rem",
              },
              {
                label: "M",
                value: "1rem",
                subText: "1rem",
              },
              {
                label: "L",
                value: "1.25rem",
                subText: "1.25rem",
              },
              {
                label: "XL",
                value: "1.875rem",
                subText: "1.875rem",
              },
              {
                label: "XXL",
                value: "3rem",
                subText: "3rem",
              },
              {
                label: "3XL",
                value: "3.75rem",
                subText: "3.75rem",
              },
            ],
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
          },
          {
            propertyName: "labelStyle",
            label: "Label Font Style",
            controlType: "BUTTON_GROUP",
            options: [
              {
                icon: "BOLD_FONT",
                value: "BOLD",
              },
              {
                icon: "ITALICS_FONT",
                value: "ITALIC",
              },
            ],
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: false,
            validation: { type: ValidationTypes.TEXT },
          },
        ],
      },
      {
        sectionName: "Actions",
        children: [
          {
            helpText: "when a user selects an option",
            propertyName: "onOptionChange",
            label: "onOptionChange",
            controlType: "ACTION_SELECTOR",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: true,
          },
          {
            helpText: "Trigger an action on change of filterText",
            hidden: (props: MultiSelectWidgetProps) =>
              !props.serverSideFiltering,
            dependencies: ["serverSideFiltering"],
            propertyName: "onFilterUpdate",
            label: "onFilterUpdate",
            controlType: "ACTION_SELECTOR",
            isJSConvertible: true,
            isBindProperty: true,
            isTriggerProperty: true,
          },
        ],
      },

      {
        sectionName: "Styles",
        children: [
          {
            propertyName: "backgroundColor",
            helpText: "Sets the background color of the widget",
            label: "Background color",
            controlType: "COLOR_PICKER",
            isBindProperty: false,
            isTriggerProperty: false,
          },
        ],
      },
    ];
  }

  static getDerivedPropertiesMap() {
    return {
      selectedIndexArr: `{{ this.selectedOptionValues.map(o => _.findIndex(this.options, { value: o })) }}`,
      selectedOptionLabels: `{{ this.selectedOptionValueArr.map((o) => { const index = _.findIndex(this.options, { value: o }); return this.options[index]?.label ?? this.options[index]?.value; })  }}`,
      selectedOptionValues: `{{ this.selectedOptionValueArr.filter((o) => { const index = _.findIndex(this.options, { value: o });  return index > -1; })  }}`,
      isValid: `{{this.isRequired ? !!this.selectedIndexArr && this.selectedIndexArr.length > 0 : true}}`,
    };
  }

  static getDefaultPropertiesMap(): Record<string, string> {
    return {
      selectedOptionValueArr: "defaultOptionValue",
      filterText: "",
    };
  }

  static getMetaPropertiesMap(): Record<string, any> {
    return {
      selectedOptionValueArr: undefined,
      filterText: "",
    };
  }

  static getStylesheetConfig(): Stylesheet {
    return {
      accentColor: "{{appsmith.theme.colors.primaryColor}}",
      borderRadius: "{{appsmith.theme.borderRadius.appBorderRadius}}",
      boxShadow: "none",
    };
  }

  getPageView() {
    const options = isArray(this.props.options) ? this.props.options : [];
    const values: string[] = isArray(this.props.selectedOptionValues)
      ? this.props.selectedOptionValues
      : [];
    const dropDownWidth = MinimumPopupRows * this.props.parentColumnSpace;
    const { componentWidth } = this.getComponentDimensions();

    return (
      <MultiSelectComponent
        accentColor={this.props.accentColor}
        allowSelectAll={this.props.allowSelectAll}
        borderRadius={this.props.borderRadius}
        boxShadow={this.props.boxShadow}
        compactMode={
          !(
            (this.props.bottomRow - this.props.topRow) /
              GRID_DENSITY_MIGRATION_V1 >
            1
          )
        }
        disabled={this.props.isDisabled ?? false}
        dropDownWidth={dropDownWidth}
        dropdownStyle={{
          zIndex: Layers.dropdownModalWidget,
        }}
        isValid={this.props.isValid}
        labelAlignment={this.props.labelAlignment}
        labelPosition={this.props.labelPosition}
        labelStyle={this.props.labelStyle}
        labelText={this.props.labelText}
        labelTextColor={this.props.labelTextColor}
        labelTextSize={this.props.labelTextSize}
        labelWidth={this.getLabelWidth()}
        loading={this.props.isLoading}
        onChange={this.onOptionChange}
        onFilterChange={this.onFilterChange}
        options={options}
        placeholder={this.props.placeholderText as string}
        serverSideFiltering={this.props.serverSideFiltering}
        value={values}
        widgetId={this.props.widgetId}
        width={componentWidth}
      />
    );
  }

  onOptionChange = (value: DraftValueType) => {
    this.props.updateWidgetMetaProperty("selectedOptionValueArr", value, {
      triggerPropertyName: "onOptionChange",
      dynamicString: this.props.onOptionChange,
      event: {
        type: EventType.ON_OPTION_CHANGE,
      },
    });

    // Empty filter after Selection
    this.onFilterChange("");
  };

  onFilterChange = (value: string) => {
    this.props.updateWidgetMetaProperty("filterText", value);

    if (this.props.onFilterUpdate) {
      super.executeAction({
        triggerPropertyName: "onFilterUpdate",
        dynamicString: this.props.onFilterUpdate,
        event: {
          type: EventType.ON_FILTER_UPDATE,
        },
      });
    }
  };

  static getWidgetType(): WidgetType {
    return "MULTI_SELECT_WIDGET";
  }
}

export interface DropdownOption {
  label: string;
  value: string;
  disabled?: boolean;
}

export interface MultiSelectWidgetProps extends WidgetProps {
  placeholderText?: string;
  selectedIndex?: number;
  selectedIndexArr?: number[];
  selectedOption: DropdownOption;
  options?: DropdownOption[];
  onOptionChange: string;
  onFilterChange: string;
  defaultOptionValue: string | string[];
  isRequired: boolean;
  isLoading: boolean;
  selectedOptionValueArr: string[];
  filterText: string;
  selectedOptionValues: string[];
  selectedOptionLabels: string[];
  serverSideFiltering: boolean;
  onFilterUpdate: string;
  backgroundColor: string;
  borderRadius: string;
  boxShadow?: string;
  accentColor: string;
  allowSelectAll?: boolean;
  labelText: string;
  labelPosition?: LabelPosition;
  labelAlignment?: Alignment;
  labelWidth?: number;
}

export default MultiSelectWidget;