/********************************************************************************
 * Copyright (c) 2018 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0, or the W3C Software Notice and
 * Document License (2015-05-13) which is available at
 * https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document.
 *
 * SPDX-License-Identifier: EPL-2.0 OR W3C-20150513
 ********************************************************************************/

/**
 * Generic TD helper functions used across the code
 * These Helpers are used like this:
 * ```
 * import * as TDHelpers from './td-helpers';
 * ```
 */

import ThingDescription from "./thing-description";

/**
 * @deprecated This function will be removed in the future. Please use '@thingweb/td-utils' package instead.
 */
export function findProtocol(td: ThingDescription): string {
    const base: string = td.base;
    const columnLoc: number = base.indexOf(":");
    return base.substring(0, columnLoc);
}

/**
 * @deprecated This function will be removed in the future. Please use '@thingweb/td-utils' package instead.
 */
export function findPort(td: ThingDescription): number {
    const base: string = td.base;
    const columnLoc: number = base.indexOf(":", 6);
    const divLoc: number = base.indexOf("/", columnLoc);
    const returnString: string = base.substring(columnLoc + 1, divLoc);
    return parseInt(returnString);
}

/**
 * @deprecated This function will be removed in the future.
 */
export function setContextLanguage(thing: ThingDescription, language: string, forceOverride: boolean): void {
    // forceOverride == false -> set @language if no @language set
    // forceOverride == true  -> set/override @language in any case
    if (Array.isArray(thing["@context"])) {
        const arrayContext = thing["@context"];
        let languageSet = false;
        for (const arrayEntry of arrayContext) {
            if (typeof arrayEntry === "object") {
                if ((arrayEntry as Record<string, unknown>)["@language"] !== undefined) {
                    if (forceOverride) {
                        (arrayEntry as Record<string, unknown>)["@language"] = language;
                    }
                    languageSet = true;
                }
            }
        }
        if (!languageSet) {
            (arrayContext as unknown[]).push({
                "@language": language,
            });
        }
    }
}