export type Facet = TextFacet | ColorFacet | RangeFacet | SizeFacet | CheckboxFacet;
export type FacetType = Facet['type'];
export type FacetTextSort = 'ALPHABETICAL' | 'RELEVANCE' | 'NATURAL';


interface FacetData {
  /**
   * Identifier for this facet. Should be used to select this facet,
   * e.g. when creating a facet query parameters or product rules.
   *
   * @example
   * ```ts
   * api.query.landingPage({
   *   facets: {
   *     [facet.id]: [facet.values[0].id]
   *   }
   * });
   * ```
   */
  id: string;
  /** Presentation text for facet */
  label: string;
}

export interface TextFacet extends FacetData {
  /** Type of facet */
  type: 'TEXT';
  /** How the values are sorted */
  sort: FacetTextSort;
  /** Number of selected facet values */
  selectedCount: number;
  /** Values of facet */
  values: TextFacetValue[];
}

export interface ColorFacet extends FacetData {
  /** Type of facet */
  type: 'COLOR';
  /** Number of selected facet values */
  selectedCount: number;
  /** Values of facet */
  values: ColorFacetValue[];
}

export interface RangeFacet extends FacetData {
  /** Type of facet */
  type: 'RANGE';
  /** The unit of the value. Only applicable for measurements */
  unit?: string;
  /** Minimum value of range, inclusive. Undefined if there are no products in the selection */
  min?: number;
  /** Maximum value of range, inclusive. Undefined if there are no products in the selection */
  max?: number;
  /** Selected min value, undefined if not selected */
  minSelected?: number;
  /** Selected max value, undefined if not selected */
  maxSelected?: number;
}

export interface SizeFacet extends FacetData {
  /** Type of facet */
  type: 'SIZE';
  /** Number of selected facet values */
  selectedCount: number;
  /** The defined sizeTypes */
  sizeTypes: SizeType[];
}

export interface CheckboxFacet extends FacetData {
  /** Type of facet */
  type: 'CHECKBOX';
  /** Identifies the checkbox as selected */
  selected: boolean;
  /** The number of products that match the criteria. Only available when `selected` is `true` */
  count?: number;
}


export interface TextFacetValue {
  /**
   * Identifier for this facet value. Use this value when refining queries with
   * selected facet values.
   */
  id: string;
  /** Presentation text */
  label: string;
  /** Identifies the value as selected */
  selected: boolean;
  /** The number of products that match the criteria */
  count: number;
}

export interface ColorFacetValue extends TextFacetValue {
  /** A CSS-color code for this color facet */
  color: string;
}

export interface SizeType {
  /** Type of size, e.g. cloth or shoe sizes */
  label: string;
  /** Size formats for type */
  formats: SizeFormat[];
}

export interface SizeFormat {
  /** The identifier for this size format */
  format: string;
  /** Size values for format */
  values: TextFacetValue[];
}