.eleventy.js

const syntaxHighlight = require("@11ty/eleventy-plugin-syntaxhighlight");
const markdownIt = require("markdown-it");
const markdownItAnchor = require("markdown-it-anchor");
const markdownItCheckbox = require("markdown-it-checkbox");

module.exports = function (eleventyConfig) {
  // ── Plugins ──────────────────────────────────────────────────────────────
  eleventyConfig.addPlugin(syntaxHighlight);

  // ── Markdown ──────────────────────────────────────────────────────────────
  const md = markdownIt({
    html: true,
    linkify: true,
    typographer: true,
  })
    .use(markdownItAnchor, {
      permalink: markdownItAnchor.permalink.headerLink(),
      slugify: (s) =>
        s
          .toLowerCase()
          .replace(/[^\w\s-]/g, "")
          .trim()
          .replace(/\s+/g, "-"),
    })
    .use(markdownItCheckbox, {
      divWrap: false,
      divClass: "checkbox",
      idPrefix: "cbx_",
    });

  // Wrap tables in a scroll container
  md.renderer.rules.table_open = () =>
    '<div class="table-scroll"><table>\n';
  md.renderer.rules.table_close = () => "</table></div>\n";

  eleventyConfig.setLibrary("md", md);

  // ── Checkbox label spill fix ──────────────────────────────────────────────
  // markdown-it-checkbox closes <label> at the first inline child, so any
  // <code>/<a>/<strong>/text that follows lands outside the <label> as raw
  // siblings in the <li>. This transform pulls that spilled content back into
  // the label so the accessible name is complete and the flex layout stays intact.
  eleventyConfig.addTransform("fixCheckboxLabelSpill", function (content, outputPath) {
    if (!outputPath || !outputPath.endsWith(".html")) return content;
    // Match: <input type="checkbox"…><label …>…</label>SPILLED</li>
    // Capture: group1 = input+label open through </label>, group2 = spilled content
    return content.replace(
      /(<input\b[^>]*type="checkbox"[^>]*>\s*<label\b[^>]*>[\s\S]*?<\/label>)([\s\S]*?)(<\/li>)/g,
      (match, labelBlock, spill, closeLi) => {
        // Only act when there is actually inline content spilled after </label>.
        // A spill that consists only of whitespace or block elements (ul/ol/p…)
        // is harmless — leave it untouched.
        const blockTag = /^\s*<\s*(ul|ol|li|p|div|pre|blockquote|table|section|article|figure|hr|h[1-6])\b/i;
        const trimmed = spill.trim();
        if (!trimmed || blockTag.test(trimmed)) return match;
        // Move spilled content inside the label, just before </label>.
        const fixedLabel = labelBlock.replace(/<\/label>$/, spill + "</label>");
        return fixedLabel + closeLi;
      }
    );
  });

  // ── Pass-through ──────────────────────────────────────────────────────────
  // Copy public/ contents to _site/ root (not under _site/public/)
  eleventyConfig.addPassthroughCopy({ "public/css":          "css" });
  eleventyConfig.addPassthroughCopy({ "public/js":           "js" });
  eleventyConfig.addPassthroughCopy({ "public/icons":        "icons" });
  eleventyConfig.addPassthroughCopy({ "public/manifest.json": "manifest.json" });
  eleventyConfig.addPassthroughCopy({ "public/sw.js":        "sw.js" });
  eleventyConfig.addPassthroughCopy({ "public/robots.txt":   "robots.txt" });
  eleventyConfig.addPassthroughCopy({ "public/favicon.ico":  "favicon.ico" });
  eleventyConfig.addPassthroughCopy({ "public/favicon.svg":  "favicon.svg" });
  eleventyConfig.addPassthroughCopy({ "public/og-image.png": "og-image.png" });
  eleventyConfig.addPassthroughCopy({ "public/8053702bdb002fcad5c0de97fe10f61b.txt": "8053702bdb002fcad5c0de97fe10f61b.txt" });

  // ── Filters ───────────────────────────────────────────────────────────────
  eleventyConfig.addFilter("year", () => new Date().getFullYear());

  // Build a <title> tag value: "Page Title | Address Normalization" capped at 65 chars
  // If title+suffix > 65, fall back to just the title (truncated to 65 if needed)
  eleventyConfig.addFilter("pageTitle", (title) => {
    if (!title) return "Address Normalization Pipelines";
    const suffix = " | Address Normalization";
    const full = title + suffix;
    if (full.length <= 65) return full;
    if (title.length <= 65) return title;
    return title.slice(0, 62) + "...";
  });

  // JSON-serialize a single value (safe for embedding in JSON-LD script blocks)
  eleventyConfig.addFilter("jsonStr", (value) => {
    return JSON.stringify(String(value || "")).replace(/<\/script/gi, "<\\/script");
  });

  // ISO 8601 date string from a Date or date-like value
  eleventyConfig.addFilter("dateIso", (date) => {
    if (!date) return "";
    return (date instanceof Date ? date : new Date(date)).toISOString();
  });

  // Number of path segments in a URL (used for sitemap priority)
  eleventyConfig.addFilter("urlDepth", (url) => {
    return url.replace(/^\/|\/$/g, "").split("/").filter(Boolean).length;
  });

  // Build breadcrumbs array from a URL string
  eleventyConfig.addFilter("breadcrumbs", (url) => {
    const parts = url.replace(/^\/|\/$/g, "").split("/").filter(Boolean);
    const crumbs = [{ label: "Home", url: "/" }];
    let cumulative = "";
    parts.forEach((part, i) => {
      cumulative += "/" + part;
      const label = part
        .replace(/-/g, " ")
        .replace(/\b\w/g, (c) => c.toUpperCase());
      crumbs.push({
        label,
        url: cumulative + "/",
        current: i === parts.length - 1,
      });
    });
    return crumbs;
  });

  // ── Collections ───────────────────────────────────────────────────────────
  eleventyConfig.addCollection("coreSection", (api) =>
    api
      .getFilteredByGlob("content/core-address-parsing-standardization/**/*.md")
      .filter((p) => !p.inputPath.endsWith("core-address-parsing-standardization/index.md"))
  );

  eleventyConfig.addCollection("multiApiSection", (api) =>
    api
      .getFilteredByGlob("content/multi-api-routing-fallback-chains/**/*.md")
      .filter((p) => !p.inputPath.endsWith("multi-api-routing-fallback-chains/index.md"))
  );

  eleventyConfig.addCollection("cachingSection", (api) =>
    api
      .getFilteredByGlob("content/caching-deduplication-spatial-indexing/**/*.md")
      .filter((p) => !p.inputPath.endsWith("caching-deduplication-spatial-indexing/index.md"))
  );

  eleventyConfig.addCollection("validationSection", (api) =>
    api
      .getFilteredByGlob("content/accuracy-validation-and-cicd-sync/**/*.md")
      .filter((p) => !p.inputPath.endsWith("accuracy-validation-and-cicd-sync/index.md"))
  );

  // ── Dev server ────────────────────────────────────────────────────────────
  eleventyConfig.setServerOptions({ watch: ["public/**"] });

  // ── Directory config ──────────────────────────────────────────────────────
  return {
    markdownTemplateEngine: "njk",
    htmlTemplateEngine: "njk",
    dir: {
      input: "content",
      output: "_site",
      includes: "../_includes",
      data: "../_data",
    },
  };
};