// TypeScript Version: 2.2

declare module 'date-holidays' {
    export interface Country {
        country: string;
        state?: string;
        region?: string;
    }

    export type HolidayType = "public" | "bank" | "school" | "observance";

    export interface Options {
        languages?: string | ReadonlyArray<string>;
        timezone?: string;
        types?: ReadonlyArray<HolidayType>;
    }

    export interface HolidayOptions {
        name: { [key: string]: string };
        type: HolidayType;
    }

    export interface Holiday {
        date: string;
        start: Date;
        end: Date;
        name: string;
        type: HolidayType;
    }

    export interface HolidaysInterface {
        init(country?: Country | string, opts?: Options): void;

        init(country?: string, state?: string, opts?: Options): void;

        init(country?: string, state?: string, region?: string, opts?: Options): void;

        setHoliday(rule: string, opts: HolidayOptions | string): boolean;

        getHolidays(year?: string | Date, lang?: string): Holiday[];

        isHoliday(date: Date): Holiday;

        query(country?: string, state?: string, lang?: string): { [key: string]: string };

        getCountries(lang?: string): { [key: string]: string };

        getStates(country: string, lang?: string): { [key: string]: string };

        getRegions(country: string, state: string, lang?: string): { [key: string]: string };

        getTimezones(): string[];

        setTimezone(timezone: string): void;

        getLanguages(): string[];

        setLanguage(language: string | string[]): string[];

        getDayOff(): string;
    }

    interface HolidaysConstructor {
        new (country?: Country | string, state?: string, region?: string, opts?: Options): HolidaysInterface;
    }

    let Holidays: HolidaysConstructor;

    export default Holidays;
}