// build your own rule
import Vue from "vue";

export interface Params {
    [key: string]: any;
    type: string;
}

export interface ValidationParams {
    readonly name: string;
    readonly params: Params;
    readonly path: string[];
}

// const ValidationRule
export interface ValidationRule {
    (...params: any[]): boolean;
    $params(): ValidationParams;
    $pending(): boolean;
}

export type CustomRule = (value: any, parentVm?: any) => boolean | Promise<boolean>;

export type ValidationFunc = () => ValidationRule;

export interface Helpers {
    withParams(params: Params, rule: CustomRule | ValidationRule): ValidationRule;
    req(value: any): boolean;
    ref(reference: string | ((vm: any, parentVm?: Vue) => any), vm: any, parentVm?: Vue): any;
    len(value: any): number;
    regex(type: string, expr: RegExp): ValidationRule;
}

export const helpers: Helpers;

// pre-defined rules
export function required(): ValidationRule;
export function requiredIf(field: string | ((vm: any, parentVm?: Vue) => any)): ValidationRule;
export function requiredUnless(field: string | ((vm: any, parentVm?: Vue) => any)): ValidationRule;
export function minLength(length: number): ValidationRule;
export function maxLength(length: number): ValidationRule;
export function minValue(min: number | Date): ValidationRule;
export function maxValue(max: number | Date): ValidationRule;
export function between(min: number | Date, max: number | Date): ValidationRule;
export function alpha(): ValidationRule;
export function alphaNum(): ValidationRule;
export function numeric(): ValidationRule;
export function integer(): ValidationRule;
export function decimal(): ValidationRule;
export function email(): ValidationRule;
export function ipAddress(): ValidationRule;
export function macAddress(separator: string): ValidationRule;
export function sameAs(field: string | ((vm: any, parentVm?: Vue) => any)): ValidationRule;
export function url(): ValidationRule;
export function not(validator: ValidationRule | CustomRule): ValidationRule;
export function or(...validators: Array<ValidationFunc | CustomRule>): ValidationRule;
export function and(...validators: Array<ValidationFunc | CustomRule>): ValidationRule;