import { AbstractControl, ValidationErrors, ValidatorFn } from '@angular/forms';

/**
 * @license
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://github.com/thekhegay/ngwr/blob/main/LICENSE
 */

/**
 * Bundled `ValidatorFn`s — pure functions, no DOM, no DI. Mirrors the
 * API shape of Angular's built-in `Validators` so it composes cleanly:
 *
 * ```ts
 * import { Validators } from '@angular/forms';
 * import { WrValidators } from 'ngwr/validators';
 *
 * new FormControl('', [
 *   Validators.required,
 *   WrValidators.cardNumber,
 *   WrValidators.cvc(3),
 *   WrValidators.match('password'),
 *   WrValidators.oneOf(['xs', 'sm', 'md', 'lg', 'xl']),
 * ]);
 * ```
 *
 * Each error is keyed under the validator name (e.g. `cardNumber`,
 * `cvc`, `iban`) so consumers can branch in templates.
 *
 * Anything Angular already ships (`required`, `email`, `min`, `max`,
 * `pattern`, …) is deliberately NOT duplicated here.
 *
 * @see https://ngwr.dev/validators
 */
declare const WrValidators: {
    /** No whitespace anywhere in the value. */
    noWhitespace: (control: AbstractControl) => ValidationErrors | null;
    /** 3, 4, 6, or 8-digit hex colour (`#abc`, `#1a2b3c`, `#1a2b3c4d`). */
    hexColor: (control: AbstractControl) => ValidationErrors | null;
    /**
     * Valid URL. Accepts any scheme by default; pass `{ protocols: ['https'] }`
     * to restrict. A scheme is required by default; pass `{ requireProtocol: false }`
     * to also accept bare domains (e.g. `ngwr.dev`), assuming `https`.
     */
    url: (options?: {
        readonly protocols?: readonly string[];
        readonly requireProtocol?: boolean;
    }) => ValidatorFn;
    /** Credit card number — Luhn check + 13-19 digit length. Spaces and dashes are stripped first. */
    cardNumber: (control: AbstractControl) => ValidationErrors | null;
    /** CVC / CVV — N digits (default 3). Common: 3 for Visa/MC, 4 for Amex. */
    cvc: (length?: number) => ValidatorFn;
    /**
     * IBAN — basic structure (CC + 2 digits + up to 30 alphanumerics) +
     * the mod-97 check. Country-length tables not enforced.
     */
    iban: (control: AbstractControl) => ValidationErrors | null;
    /**
     * Value must equal a sibling control's value (e.g. confirm-password).
     * The target lookup uses `control.parent.get(name)`, so it works
     * inside `FormGroup` and nested groups.
     */
    match: (targetName: string) => ValidatorFn;
    /** Value must be one of the allowed entries (strict equality). */
    oneOf: <T>(allowed: readonly T[]) => ValidatorFn;
    /** Value (Date | parseable) must be ≥ `min`. */
    minDate: (min: Date | string | number) => ValidatorFn;
    /** Value (Date | parseable) must be ≤ `max`. */
    maxDate: (max: Date | string | number) => ValidatorFn;
};

export { WrValidators };