import fs from "node:fs";

import path from "node:path";

import JSON5 from "json5";

import { describe, expect, it } from "vitest";

const PLUGIN_DOCS_DIR = path.join(process.cwd(), "docs", "plugins");

function lineNumberAt(source: string, index: number): number {

return source.slice(0, index).split("\n").length;

}

function listMarkdownFiles(dir: string): string[] {

const files: string[] = [];

for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {

const entryPath = path.join(dir, entry.name);

if (entry.isDirectory()) {

files.push(...listMarkdownFiles(entryPath));

} else if (entry.isFile() && entry.name.endsWith(".md")) {

files.push(entryPath);

}

}

return files;

}

describe("plugin docs examples", () => {

it("keeps plugin docs JSON fences parseable", () => {

const failures: string[] = [];

for (const docPath of listMarkdownFiles(PLUGIN_DOCS_DIR)) {

const markdown = fs.readFileSync(docPath, "utf8");

const blocks = markdown.matchAll(/```(json5|json)\n([\s\S]*?)```/g);

for (const match of blocks) {

const lang = match[1] ?? "";

const code = match[2] ?? "";

const relativePath = path.relative(process.cwd(), docPath).split(path.sep).join("/");

const location = `${relativePath}:${lineNumberAt(markdown, match.index ?? 0)}`;

try {

if (lang === "json") {

JSON.parse(code);

} else {

JSON5.parse(code);

}

} catch (error) {

failures.push(`${location} ${lang.toUpperCase()} parse failed: ${String(error)}`);

}

}

}

expect(failures).toEqual([]);

});

});