.eleventy.cjs

const fs = require('node:fs');
const path = require('node:path');

const QUICKSTART_CONTRACT = require('./docs/quickstart-contract.json');
const QUICKSTART_BASES = QUICKSTART_CONTRACT.reference_resolution?.bases;
const QUICKSTART_SOURCES = Object.freeze(Object.fromEntries(
  Object.entries(QUICKSTART_CONTRACT.sources).map(([name, reference]) => {
    const base = QUICKSTART_BASES?.[reference.base];
    if (reference.kind !== 'composer_package_path'
      || base?.kind !== 'composer_package'
      || base.package_pointer !== '/package'
      || typeof reference.path !== 'string') {
      throw new Error(`Invalid package-owned quickstart source reference: ${name}`);
    }
    return [name, reference.path];
  }),
));

function escapeHtml(value) {
  return value
    .replaceAll('&', '&')
    .replaceAll('<', '&lt;')
    .replaceAll('>', '&gt;')
    .replaceAll('"', '&quot;')
    .replaceAll('\n', '&#10;');
}

module.exports = function configure(eleventyConfig) {
  eleventyConfig.addPassthroughCopy({'docs/CNAME': 'CNAME'});
  eleventyConfig.addPassthroughCopy({'docs/portal/assets': 'assets'});
  eleventyConfig.addPassthroughCopy({'docs/quickstart-contract.json': 'quickstart-contract.json'});
  eleventyConfig.addPassthroughCopy({'docs/quickstart-contract.schema.v2.json': 'quickstart-contract.schema.v2.json'});
  eleventyConfig.addPassthroughCopy({'.phpdoc/template/analytics': 'analytics'});
  eleventyConfig.addPassthroughCopy({'.phpdoc/template/assets': 'assets'});
  eleventyConfig.addPassthroughCopy({'build/api': 'api'});

  eleventyConfig.addShortcode('sourceFile', function sourceFile(sourceName, language = 'text', label = sourceName) {
    const sourcePath = QUICKSTART_SOURCES[sourceName];
    if (typeof sourcePath !== 'string') {
      throw new Error(`Unknown package-owned quickstart source: ${sourceName}`);
    }
    const resolved = path.resolve(__dirname, sourcePath);
    const examplesDirectory = path.resolve(__dirname, 'examples');
    if (!resolved.startsWith(`${examplesDirectory}${path.sep}`)) {
      throw new Error(`Quickstart source must stay under ${examplesDirectory}: ${sourcePath}`);
    }
    const source = fs.readFileSync(resolved, 'utf8').trimEnd();
    return `<div class="code-stage" data-quickstart-source="${escapeHtml(sourcePath)}"><div class="code-stage__bar"><span>${escapeHtml(label)}</span><button class="copy-button" type="button">Copy</button></div><pre><code class="language-${escapeHtml(language)}">${escapeHtml(source)}</code></pre></div>`;
  });

  eleventyConfig.addFilter('absoluteUrl', (url) => new URL(url, 'https://php.durable-workflow.com').toString());

  return {
    dir: {
      input: 'docs/portal',
      includes: '_includes',
      data: '_data',
      output: 'build/site',
    },
    htmlTemplateEngine: 'njk',
    markdownTemplateEngine: 'njk',
    templateFormats: ['md', 'njk'],
  };
};