const { visit } = require("unist-util-visit");

/**

* Remark plugin to automatically inject GiscusComments component

* at the end of MDX files that don't already have it

*/

export default function giscusInjector() {

return (tree) => {

let hasGiscus = false;

// Check if GiscusComments already exists

visit(tree, (node) => {

// Check JSX elements

if (

node.type === "mdxJsxFlowElement" ||

node.type === "mdxJsxTextElement"

) {

if (node.name === "GiscusComments") {

hasGiscus = true;

}

}

// Check raw JSX strings

if (

node.type === "jsx" &&

node.value &&

node.value.includes("GiscusComments")

) {

hasGiscus = true;

}

});

// Only inject if not present

if (!hasGiscus) {

// Add the component as an MDX JSX element

tree.children.push({

type: "mdxJsxFlowElement",

name: "GiscusComments",

attributes: [],

children: [],

});

}

};

}