import { navigator } from "./browser-utils";
import { DomainUtils } from "./domain-utils";

/**
 * Cookie Utils.
 *
 * @export
 * @abstract
 * @class CookieUtils
 */
export abstract class CookieUtils {
    public static enabled: boolean = navigator()?.cookieEnabled || false;

    /**
     * Set a value as a cookie.
     *
     * @static
     * @param {string} name Cookie's name.
     * @param {string} value Cookie's value.
     * @param {CookieOptions} [options={}] Options
     * @memberof CookieUtils
     */
    public static set(name: string, value: string, options: CookieOptions = {}): void {
        let cookie = `${name}=${value}`;

        if (options.domain) {
            cookie += `;domain=${options.domain}`;
        }

        if (options.ttl) {
            const expires = new Date(new Date().getTime() + options.ttl * 1000);
            cookie += `;expires=${expires.toUTCString()}`;
        }

        if (options.path) {
            cookie += `;path=${options.path}`;
        } else {
            cookie += ";path=/";
        }

        document.cookie = cookie;
    }

    /**
     * Get a value from a cookie.
     *
     * @static
     * @param {string} name Cookie's name.
     * @return {string | undefined} Cookie's value or undefined.
     * @memberof CookieUtils
     */
    public static get(name: string): string | undefined {
        const groups = new RegExp(`${name}=([^\\s;]*)`).exec(document.cookie);

        if (groups && groups[1]) {
            return groups[1];
        }

        return undefined;
    }

    /**
     * Extrai o domínio raiz da url
     *
     * @static
     * @return {string} Domínio raiz da url
     * @memberof CookieUtils
     */
    public static getDomain(): string {
        const urlParts = document.domain.split(".").reverse();
        let newParts = [];
        let locationResult = "";

        for (const p of urlParts) {
            newParts.push(p);

            if (!DomainUtils.isTLD(p)) {
                break;
            }
        }

        newParts = newParts.reverse();

        for (const n of newParts) {
            locationResult += n;

            if (n !== newParts[newParts.length - 1]) {
                locationResult += ".";
            }
        }

        return locationResult;
    }
}

/**
 * Options to create a cookie
 *
 * @export
 * @interface CookieOptions
 */
export interface CookieOptions {
    domain?: string;
    ttl?: number;
    path?: string;
}