Tool navigation proposals #123

	name: Check Image Links

	on:
	pull_request:
	paths:
	- 'topics/*/.qmd'
	- 'pathway/*/.qmd'
	- '*.qmd'


	jobs:
	check-image-links:
	runs-on: ubuntu-latest

	steps:
	- name: Check out repository
	uses: actions/checkout@v3

	- name: Set up Node.js
	uses: actions/setup-node@v3
	with:
	node-version: '20'

	- name: Install dependencies
	run: npm install axios glob

	- name: Check image links
	run: \|
	node -e "
	const fs = require('fs');
	const path = require('path');
	const axios = require('axios');
	const glob = require('glob');

	const markdownFiles = glob.sync('*/.qmd');
	const imageLinks = [];

	markdownFiles.forEach(file => {
	const content = fs.readFileSync(file, 'utf8');
	const regex = /!\[.?\]$(.?)$/g;
	let match;
	while ((match = regex.exec(content)) !== null) {
	const url = match[1];
	if (url.startsWith('http://') \|\| url.startsWith('https://')) {
	imageLinks.push({ file, url });
	}
	}
	});

	const checkLinks = async () => {
	const results = await Promise.all(imageLinks.map(async ({ file, url }) => {
	try {
	const response = await axios.head(url);
	return response.status === 200 ? null : { file, url, status: response.status };
	} catch (error) {
	return { file, url, status: error.response ? error.response.status : 'Unknown error' };
	}
	}));

	const brokenLinks = results.filter(result => result !== null);
	if (brokenLinks.length > 0) {
	console.log('Broken image links found:');
	brokenLinks.forEach(({ file, url, status }) => {
	console.log(`File: ${file}, URL: ${url}, Status: ${status}`);
	});
	process.exit(1);
	} else {
	console.log('No broken image links found.');
	}
	};

	checkLinks();
	"

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