import { createDetailedValidator, IR, registerType } from 'typecheck.macro'

export namespace v1 {

  export interface SetupOptions {

    width: number;

    height: number;

    zoom: number;

    center: string;

    c?: string;

    iterate: string;

    iterations: number;

    escape: number;

    potential: string;

  }

  registerType('SetupOptions');

  export const validate = createDetailedValidator<SetupOptions>();

}

export namespace v2 {

  export interface SetupOptions {

    width: number;

    height: number;

    zoom: number;

    center: string;

    julia?: string;

    iterate: string;

    iterations: number;

    escape: number;

    seed: string;

    red: string;

    green: string;

    blue: string;

  }

  registerType('SetupOptions');

  export const validate = createDetailedValidator<SetupOptions>();

}

type SetupOptions = v1.SetupOptions | v2.SetupOptions;

export const validate = (value: unknown, errors: [string, unknown, string | IR.IR][]): value is SetupOptions => (

  v2.validate(value, errors) || v1.validate(value, errors)

);

export const assert = (value: unknown): SetupOptions => {

  const errors: any[] = [];

  if (!validate(value, errors)) {

    const [[name, actual, expected]] = errors;

    throw new TypeError(`Expected ${name} to be ${expected}; got ${actual}`);

  }

  return value;

};

export default SetupOptions;