/* global xhr, App, Plugins, Article, Notify */

Plugins.Af_Fulltext = {
    orig_attr_name: 'data-af-fulltext-orig-content',

    /**
     * Toggle extracted content in place for one article.
     *
     * Doubles as the rule-debugging loop: edit a rule, hit the button, see the
     * result immediately -- and the notification names the rule that produced it,
     * so a rule that quietly stopped matching is visible rather than merely
     * disappointing.
     */
    embed: function(id) {
        const content = document.querySelector(App.isCombinedMode() ?
            `.cdm[data-article-id="${id}"] .content-inner` :
            `.post[data-article-id="${id}"] .content`);

        if (!content) return;

        if (content.hasAttribute(this.orig_attr_name)) {
            content.innerHTML = content.getAttribute(this.orig_attr_name);
            content.removeAttribute(this.orig_attr_name);

            if (App.isCombinedMode()) Article.cdmMoveToId(id);

            return;
        }

        Notify.progress("Extracting, please wait...");

        xhr.json("backend.php", App.getPhArgs("af_fulltext", "embed", {id: id}), (reply) => {
            if (reply && reply.content) {
                content.setAttribute(this.orig_attr_name, content.innerHTML);
                content.innerHTML = reply.content;

                Notify.info(reply.summary || "Extracted");

                if (App.isCombinedMode()) Article.cdmMoveToId(id);
            } else {
                const why = reply && reply.errors && reply.errors.length ?
                    reply.errors[0] : "no content extracted";

                Notify.error("af_fulltext: " + why);
            }
        });
    }
};