export const defaultSanitizeHtmlOptions = {
    allowedTags: [
        "b",
        "i",
        "em",
        "strong",
        "a",
        "p",
        "span",
        "ul",
        "ol",
        "li",
        "h1",
        "h2",
        "h3",
        "h4",
        "h5",
        "h6",
        "img",
        "div",
        "button",
        "pre",
        "code",
        "br",
        "hr",
        "blockquote",
        "table",
        "tr",
        "td",
        "th",
        "thead",
        "tbody",
        "tfoot",
        "caption",
        "colgroup",
        "col",
    ],
    allowedAttributes: {
        a: ["href", "title", "class", "style", "target", "rel"],
        img: ["src", "alt", "width", "height", "class", "style"],
        "*": ["style", "class", "title", "id"],
    },
};
function uniqueStrings(values) {
    return Array.from(new Set(values));
}
/**
 * Build sanitize-html options, appending any tags/attributes from config.
 */
export default function getSanitizeHtmlOptions(config) {
    const cfg = config || global.CONFIG;
    const extra = cfg?.html_sanitize;
    const baseTags = defaultSanitizeHtmlOptions.allowedTags || [];
    const baseAttrs = {
        ...(defaultSanitizeHtmlOptions.allowedAttributes || {}),
    };
    const allowedTags = uniqueStrings([
        ...(Array.isArray(baseTags) ? baseTags : []),
        ...(extra?.allowed_tags || []),
    ]);
    const allowedAttributes = { ...baseAttrs };
    for (const [tag, attrs] of Object.entries(extra?.allowed_attributes || {})) {
        allowedAttributes[tag] = uniqueStrings([
            ...(allowedAttributes[tag] || []),
            ...attrs,
        ]);
    }
    return {
        allowedTags,
        allowedAttributes,
    };
}