/**
 * @license
 * SPDX-License-Identifier: Apache-2.0
 */
import { createHtml, unwrapHtml } from '../internals/html_impl';
import { unwrapResourceUrl } from '../internals/resource_url_impl';
import { unwrapScript } from '../internals/script_impl';
/**
 * Returns HTML-escaped text as a `SafeHtml` object.
 *
 * Available options:
 * - `preserveSpaces` turns every second consecutive space character into its
 * HTML entity representation (` `).
 * - `preserveNewlines` turns newline characters into breaks (`<br>`).
 * - `preserveTabs` wraps tab characters in a span with style=white-space:pre.
 */
export function htmlEscape(text, options = {}) {
    let htmlEscapedString = htmlEscapeToString(text);
    if (options.preserveSpaces) {
        // Do this first to ensure we preserve spaces after newlines and tabs.
        htmlEscapedString =
            htmlEscapedString.replace(/(^|[\r\n\t ]) /g, '$1&#160;');
    }
    if (options.preserveNewlines) {
        htmlEscapedString = htmlEscapedString.replace(/(\r\n|\n|\r)/g, '<br>');
    }
    if (options.preserveTabs) {
        htmlEscapedString = htmlEscapedString.replace(/(\t+)/g, '<span style="white-space:pre">$1</span>');
    }
    return createHtml(htmlEscapedString);
}
/**
 * Creates a `SafeHtml` representing a script tag with inline script content.
 */
export function createScript(script, options = {}) {
    const unwrappedScript = unwrapScript(script).toString();
    let stringTag = `<script`;
    if (options.id) {
        stringTag += ` id="${htmlEscapeToString(options.id)}"`;
    }
    if (options.nonce) {
        stringTag += ` nonce="${htmlEscapeToString(options.nonce)}"`;
    }
    if (options.type) {
        stringTag += ` type="${htmlEscapeToString(options.type)}"`;
    }
    stringTag += `>${unwrappedScript}\x3c/script>`;
    return createHtml(stringTag);
}
/**
 * Creates a `SafeHtml` representing a script tag with the src attribute.
 * This also supports CSP nonces and async loading.
 */
export function createScriptSrc(src, async, nonce) {
    const unwrappedSrc = unwrapResourceUrl(src).toString();
    let stringTag = `<script src="${htmlEscapeToString(unwrappedSrc)}"`;
    if (async) {
        stringTag += ' async';
    }
    if (nonce) {
        stringTag += ` nonce="${htmlEscapeToString(nonce)}"`;
    }
    stringTag += '>\x3c/script>';
    return createHtml(stringTag);
}
/**
 * HTML-escapes the given text (`&`, `<`, `>`, `"` and `'`).
 */
function htmlEscapeToString(text) {
    const escaped = text.replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;')
        .replace(/'/g, '&apos;');
    return escaped;
}
/** Creates a `SafeHtml` value by concatenating multiple `SafeHtml`s. */
export function concatHtmls(htmls) {
    return createHtml(htmls.map(unwrapHtml).join(''));
}