/**
 * Authentication Validation Schemas
 *
 * Custom validation schemas for validating authentication form data.
 * Provides schema factories for sign-in, sign-up, and reset password forms,
 * as well as utility functions for email and password validation and
 * password strength calculation.
 *
 * @module auth/schemas
 */
import { StringValidator, SafeParseResult } from '../form/schema/custom-validation';
import { StandardSchemaV1 } from '../form/schema/standard-schema-v1';
import { PasswordRules, ResetPasswordData, SignInFormData, SignUpFormData } from './types';
/**
 * Localizable validation messages for authentication schemas.
 *
 * Pass this to schema factory functions to override the default English messages.
 * Obtain localized values from `AuthI18n` provider messages.
 */
export interface AuthValidationMessages {
    passwordMinLength?: (min: number) => string;
    passwordRequireUppercase?: string;
    passwordRequireLowercase?: string;
    passwordRequireNumber?: string;
    passwordRequireSpecialChar?: string;
    emailRequired?: string;
    invalidEmail?: string;
    passwordRequired?: string;
    nameRequired?: string;
    confirmPasswordRequired?: string;
    acceptTermsRequired?: string;
    passwordsDoNotMatch?: string;
    invalidPassword?: string;
    invalidEmailAddress?: string;
}
/**
 * Creates a password validation schema based on the provided rules.
 *
 * Builds a `StringValidator` that enforces minimum length, character class
 * requirements, and optional custom validation logic.
 *
 * @param rules - The password validation rules to enforce. Defaults to {@link defaultPasswordRules}.
 * @returns A `StringValidator` that validates passwords against the given rules.
 *
 * @example
 * ```ts
 * const schema = createPasswordSchema({ minLength: 10, requireNumbers: true })
 * const result = schema.validate('hello123')
 * ```
 */
export declare function createPasswordSchema(rules?: PasswordRules, messages?: AuthValidationMessages): StringValidator;
/**
 * Creates an email validation schema with optional localized messages.
 *
 * @param messages - Optional localized validation messages
 * @returns A `StringValidator` that validates email addresses
 */
export declare function createEmailSchema(messages?: AuthValidationMessages): StringValidator;
/**
 * Base email validation schema.
 *
 * Validates that the value is a non-empty string with a valid email format.
 */
export declare const emailSchema: StringValidator;
/**
 * Creates a validation schema for the sign-in form.
 *
 * Validates email (required, valid format) and password fields.
 * When `passwordRules` is provided, the password field is validated
 * against those rules; otherwise, only a non-empty check is applied.
 *
 * @param passwordRules - Optional password validation rules. If omitted, only a "required" check is used.
 * @returns A `StandardSchemaV1<SignInFormData>` with a `safeParse` method.
 *
 * @example
 * ```ts
 * const schema = createSignInSchema({ minLength: 8, requireNumbers: true })
 * const result = schema.safeParse({ email: 'user@test.com', password: 'pass1234' })
 * ```
 */
export declare function createSignInSchema(passwordRules?: PasswordRules, messages?: AuthValidationMessages): StandardSchemaV1<SignInFormData> & {
    safeParse: (value: unknown) => SafeParseResult<SignInFormData>;
};
/**
 * Creates a validation schema for the sign-up form.
 *
 * Validates name (optional), email, password, confirm password, and
 * terms acceptance fields. Password confirmation matching is enforced
 * when `showConfirmPassword` is enabled.
 *
 * @param passwordRules - Password validation rules. Defaults to {@link defaultPasswordRules}.
 * @param options - Optional flags controlling which fields are shown and required.
 * @param options.showNameField - Whether the name field is shown. @default true
 * @param options.showConfirmPassword - Whether the confirm password field is shown. @default true
 * @param options.showAcceptTermsAndConditions - Whether the terms checkbox is shown. @default true
 * @returns A `StandardSchemaV1<SignUpFormData>` with a `safeParse` method.
 *
 * @example
 * ```ts
 * const schema = createSignUpSchema(undefined, { showNameField: false })
 * const result = schema.safeParse({
 *   email: 'user@test.com',
 *   password: 'Pass1234',
 *   confirmPassword: 'Pass1234',
 *   acceptTerms: true,
 * })
 * ```
 */
export declare function createSignUpSchema(passwordRules?: PasswordRules, options?: {
    showNameField?: boolean;
    showConfirmPassword?: boolean;
    showAcceptTermsAndConditions?: boolean;
}, messages?: AuthValidationMessages): StandardSchemaV1<SignUpFormData> & {
    safeParse: (value: unknown) => SafeParseResult<SignUpFormData>;
};
/**
 * Validation schema for the reset password form.
 *
 * Validates that the email field is present and in a valid format.
 */
export declare const resetPasswordSchema: StandardSchemaV1<ResetPasswordData> & {
    safeParse: (value: unknown) => SafeParseResult<ResetPasswordData>;
};
/**
 * Pre-built sign-in schema using default password rules.
 *
 * Convenience constant equivalent to `createSignInSchema()`.
 */
export declare const defaultSignInSchema: StandardSchemaV1<import("./types").SignInData, import("./types").SignInData> & {
    safeParse: (value: unknown) => SafeParseResult<SignInFormData>;
};
/**
 * Pre-built sign-up schema using default password rules.
 *
 * Convenience constant equivalent to `createSignUpSchema()`.
 */
export declare const defaultSignUpSchema: StandardSchemaV1<SignUpFormData, SignUpFormData> & {
    safeParse: (value: unknown) => SafeParseResult<SignUpFormData>;
};
/**
 * Alias for {@link ResetPasswordData}, used as the form data type for the reset password form.
 */
export type ResetPasswordFormData = ResetPasswordData;
/**
 * Collection of schema factory functions for dynamic configuration.
 *
 * Provides convenient access to all auth schema creators.
 *
 * @example
 * ```ts
 * const signInSchema = authSchemas.signIn({ minLength: 12 })
 * const resetSchema = authSchemas.resetPassword()
 * ```
 */
export declare const authSchemas: {
    signIn: typeof createSignInSchema;
    signUp: typeof createSignUpSchema;
    resetPassword: () => StandardSchemaV1<ResetPasswordData, ResetPasswordData> & {
        safeParse: (value: unknown) => SafeParseResult<ResetPasswordData>;
    };
};
/**
 * Validates an email address against the email schema.
 *
 * @param email - The email address to validate.
 * @returns An error message string if invalid, or `null` if valid.
 *
 * @example
 * ```ts
 * validateEmail('user@test.com') // null
 * validateEmail('invalid')       // 'Please enter a valid email address'
 * ```
 */
export declare function validateEmail(email: string, messages?: AuthValidationMessages): string | null;
/**
 * Validates a password against the provided rules.
 *
 * @param password - The password to validate.
 * @param rules - The password validation rules to check against. Defaults to {@link defaultPasswordRules}.
 * @returns An error message string if invalid, or `null` if valid.
 *
 * @example
 * ```ts
 * validatePassword('weak', { minLength: 8 }) // 'Password must be at least 8 characters'
 * validatePassword('StrongPass1', { minLength: 8, requireUppercase: true, requireNumbers: true }) // null
 * ```
 */
export declare function validatePassword(password: string, rules?: PasswordRules, messages?: AuthValidationMessages): string | null;
/**
 * Calculates the strength of a password based on the provided rules.
 *
 * Evaluates each enabled rule and produces a strength level, a numerical
 * score (0-100), and a detailed breakdown of which checks passed.
 *
 * @param password - The password to evaluate.
 * @param rules - The password rules to evaluate against. Defaults to {@link defaultPasswordRules}.
 * @returns An object containing:
 *   - `strength` - The qualitative strength level: `'weak'`, `'fair'`, `'good'`, or `'strong'`.
 *   - `score` - A numerical score from 0 to 100.
 *   - `checks` - An object indicating which individual checks passed.
 *
 * @example
 * ```ts
 * const result = calculatePasswordStrength('Hello123', {
 *   minLength: 8,
 *   requireUppercase: true,
 *   requireNumbers: true,
 * })
 * // result.strength === 'good'
 * // result.score === 67
 * ```
 */
export declare function calculatePasswordStrength(password: string, rules?: PasswordRules): {
    strength: 'weak' | 'fair' | 'good' | 'strong';
    score: number;
    checks: {
        length: boolean;
        uppercase: boolean;
        lowercase: boolean;
        numbers: boolean;
        symbols: boolean;
        custom: boolean;
    };
};