import type { GenericObject, NestedPrimitiveKey } from '../object/types';
import type { NormalPrimitiveKey } from '../types/index';
/** * Flatten Array or Wrap in Array */
export type Flattened<T> = T extends (infer U)[] ? Flattened<U> : T;
/**
 * * Configuration for `createOptionsArray`.
 * - Defines the mapping between keys in the input objects and the keys in the output options.
 *
 * @typeParam T - The type of the objects in the input array.
 * @typeParam K1 - The name of the key for the first field in the output (default: `'value'`).
 * @typeParam K2 - The name of the key for the second field in the output (default: `'label'`).
 * @typeParam V - Whether to keep the `value` field as number if it is a number. Defaults to `false`.
 */
export interface OptionsConfig<T, K1, K2, V extends boolean = false> {
    /**
     * - The key in the input objects to use for the first field of the option. Only primitive values (`string | number | boolean | null | undefined`) are accepted.
     * @example
     * // If the input objects have an `id` field and you want to use it as the `value` field in the output:
     * createOptionsArray(data, {firstFieldKey: 'id'}).
     */
    firstFieldKey: NormalPrimitiveKey<T>;
    /**
     * - The key in the input objects to use for the second field of the option. Only primitive values (`string | number | boolean | null | undefined`) are accepted.
     * @example
     * // If the input objects have a `name` field and you want to use it as the `label` field in the output:
     * createOptionsArray(data, {firstFieldKey: 'id', secondFieldKey: 'name'}).
     */
    secondFieldKey: NormalPrimitiveKey<T>;
    /**
     * - The name of the first field in the output object.
     * - Defaults to `'value'`.
     * @example
     * // If you want the output field to be named `'key'` instead of `'value'`:
     * createOptionsArray(data, {firstFieldKey: 'id', secondFieldKey: 'name', firstFieldName: 'key'}).
     */
    firstFieldName?: K1;
    /**
     * - The name of the second field in the output object.
     * - Defaults to `'label'`.
     * @example
     * // If you want the output field to be named `'title'` instead of `'label'`:
     * createOptionsArray(data, {firstFieldKey: 'id', secondFieldKey: 'name', firstFieldName: 'key', secondFieldName: 'title'}).
     */
    secondFieldName?: K2;
    /**
     * - If `true`, numeric values from `firstFieldKey` will remain as numbers.
     * - All other values (including booleans, null, undefined) will be converted to strings.
     * - When `false` (default), all values are converted to strings.
     * - Defaults to `false`.
     * @example
     * // Numeric IDs remain as numbers
     * createOptionsArray(data, {
     *   firstFieldKey: 'id',
     *   secondFieldKey: 'name',
     *   retainNumberValue: true
     * });
     *
     * // All values become strings (default behavior)
     * createOptionsArray(data, {
     *   firstFieldKey: 'id',
     *   secondFieldKey: 'name'
     * });
     */
    retainNumberValue?: V;
}
/** Type for first field key */
export type FirstFieldKey<T extends GenericObject, K1 extends string = 'value', K2 extends string = 'label', V extends boolean = false> = T[OptionsConfig<T, K1, K2, V>['firstFieldKey']];
/** Type for firs field value */
export type FirstFieldValue<T extends GenericObject, K1 extends string = 'value', K2 extends string = 'label', V extends boolean = false> = V extends true ? FirstFieldKey<T, K1, K2, V> extends Exclude<FirstFieldKey<T, K1, K2, V>, number> ? string : number : string;
/** Type of values for the option fields */
export type FieldValue<P extends K1 | K2, T extends GenericObject, K1 extends string = 'value', K2 extends string = 'label', V extends boolean = false> = P extends K1 ? FirstFieldValue<T, K1, K2, V> : string;
/** Type of an option in `OptionsArray` */
export type Option<T extends GenericObject, K1 extends string = 'value', K2 extends string = 'label', V extends boolean = false> = {
    [P in K1 | K2]: FieldValue<P, T, K1, K2, V>;
};
/** * Option for sorting order. */
export interface OrderOption {
    /**
     * * The order in which to sort the array. Defaults to `'asc'`.
     * - `'asc'`: Sort in ascending order.
     * - `'desc'`: Sort in descending order.
     */
    sortOrder?: 'asc' | 'desc';
}
/** * Options for setting sortByField for sorting an array of objects. */
export interface SortByOption<T extends GenericObject> extends OrderOption {
    /** The field by which to sort the objects in the array. */
    sortByField: NestedPrimitiveKey<T>;
}
/** * Options for sorting array. */
export type SortOptions<T> = T extends GenericObject ? SortByOption<T> : OrderOption;
/** Optional settings to configure comparison behavior. */
export interface SortNature {
    /** If true, compares string chunks without case sensitivity. Defaults to `true`. */
    caseInsensitive?: boolean;
    /** If true, uses localeCompare for string chunk comparisons. Defaults to `false`. */
    localeAware?: boolean;
}
/** * Options for customizing the search behavior. */
export interface FindOptions<T extends GenericObject = {}> {
    /** * Enables fuzzy matching when exact match fails. Defaults to `false`. */
    fuzzy?: boolean;
    /** * Optional key for caching the result. Defaults to `finder-cache` */
    cacheKey?: string;
    /** * Forces binary search even for small datasets. Defaults to `false`. */
    forceBinary?: boolean;
    /** * If true, matcher and keys will be normalized to lowercase. Defaults to `true`. */
    caseInsensitive?: boolean;
    /** * If true, uses built in `Array.sort()`. Defaults to `true`. Pass `false` if data is already sorted. */
    needSorting?: boolean;
    /** * Optional data source to use instead of constructor items. */
    data?: T[] | (() => T[]);
}