move js

js/quote.js

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+(() => {
+  // Inject Quote buttons into Pandoc-style headings and copy a section-range quote to clipboard.
+  //
+  // Assumptions (matches your sample):
+  // - Headings are h1/h2 with stable ids (anchors).
+  // - A "section" is: the heading + all following sibling elements until the next heading
+  //   of the same or higher level (H2 stops at next H2 or H1; H1 stops at next H1).
+  //
+  // Primary target: GroupMe. We optimize text/plain to be readable and "quote-like".
+  // We still provide text/html for rich paste targets (Docs/Email).
+  //
+  // No dependencies.
+
+  const HEADING_SELECTOR = "h1[id], h2[id]"; // change to "h2[id]" if you only want section-level
+
+  document.addEventListener("DOMContentLoaded", () => {
+    injectQuoteButtons();
+  });
+
+  function injectQuoteButtons() {
+    document.querySelectorAll(HEADING_SELECTOR).forEach((heading) => {
+      // Avoid double-injection
+      if (heading.querySelector(":scope > .quote-btn")) return;
+
+      const btn = document.createElement("button");
+      btn.type = "button";
+      btn.className = "quote-btn";
+      btn.textContent = "";
+      btn.innerHTML = `
+      <span class="quote-icon" aria-hidden="true"></span>
+      `;
+      btn.addEventListener("click", (e) => {
+        e.preventDefault();
+        e.stopPropagation();
+        onQuoteClick(btn, heading);
+      });
+
+      // Add a little separation from heading text
+      heading.appendChild(document.createTextNode(" "));
+      heading.appendChild(btn);
+    });
+  }
+
+  async function onQuoteClick(btn, heading) {
+    const originalText = btn.textContent;
+
+    try {
+      btn.textContent = "Copying…";
+      btn.disabled = true;
+
+      await copyQuotedSection(heading);
+
+      btn.textContent = "Copied";
+      setTimeout(() => {
+        btn.textContent = originalText;
+        btn.disabled = false;
+      }, 800);
+    } catch (err) {
+      console.error(err);
+      btn.textContent = "Failed";
+      setTimeout(() => {
+        btn.textContent = originalText;
+        btn.disabled = false;
+      }, 1200);
+    }
+  }
+
+  async function copyQuotedSection(heading) {
+    if (!heading.id) throw new Error("Heading missing id.");
+
+    const level = heading.tagName; // H1 or H2
+
+    // Clone heading + subsequent siblings for the quote range
+    const nodes = [];
+    nodes.push(heading.cloneNode(true));
+
+    let el = heading.nextElementSibling;
+    while (el) {
+      if (isBoundary(level, el)) break;
+      nodes.push(el.cloneNode(true));
+      el = el.nextElementSibling;
+    }
+
+    // Remove injected button from cloned heading (so it doesn't show up in pasted content)
+    nodes[0].querySelector(".quote-btn")?.remove();
+
+    const container = document.createElement("div");
+    nodes.forEach((n) => container.appendChild(n));
+
+    const href = buildAnchorUrl(heading.id);
+
+    // HTML (for rich paste targets)
+    const html = buildHtmlQuote(container.innerHTML, href);
+
+    // Plain text (optimized for GroupMe)
+    const plain = buildGroupMePlainQuote(container, href);
+
+    await writeClipboardMultiFormat({ html, plain, url: href });
+  }
+
+  function isBoundary(level, el) {
+    // Stop at next heading of same or higher rank.
+    // H2 stops at next H1 or H2.
+    // H1 stops at next H1.
+    if (level === "H1") return el.tagName === "H1";
+    if (level === "H2") return el.tagName === "H1" || el.tagName === "H2";
+    return false;
+  }
+
+  function buildAnchorUrl(id) {
+    const url = new URL(window.location.href);
+    url.hash = id;
+    return url.toString();
+  }
+
+  function buildHtmlQuote(innerHtml, href) {
+    const safeHref = escapeHtmlAttr(href);
+    const safeText = escapeHtml(href);
+
+    return `
+      <blockquote>
+        ${innerHtml}
+        <p><a href="${safeHref}">${safeText}</a></p>
+      </blockquote>
+    `.trim();
+  }
+
+  function buildGroupMePlainQuote(container, href) {
+    // Create a readable quote-like block:
+    // - Prefix lines with "> " to visually indicate quoting (works even if not rendered specially)
+    // - Include Source link
+    const text = normalizePlainText(container);
+
+    const quoted = text
+      .split("\n")
+      .map((line) => (line.trim().length ? `> ${line}` : `>`))
+      .join("\n");
+
+    return `${quoted}\n> \n> Source: ${href}`;
+  }
+
+  function normalizePlainText(container) {
+    // Use innerText to approximate what the user sees (captures list numbering reasonably in many browsers).
+    // Then normalize spacing.
+    return (container.innerText || "")
+      .replace(/\r\n/g, "\n")
+      .replace(/\n{3,}/g, "\n\n")
+      .trim();
+  }
+
+  async function writeClipboardMultiFormat({ html, plain, url }) {
+    // Best path: multi-format clipboard write (Chromium/Edge, etc.)
+    if (navigator.clipboard?.write) {
+      const item = new ClipboardItem({
+        "text/html": new Blob([html], { type: "text/html" }),
+        "text/plain": new Blob([plain], { type: "text/plain" }),
+        // Best-effort URL type; some paste targets prefer this
+        "text/uri-list": new Blob([url], { type: "text/uri-list" }),
+      });
+      await navigator.clipboard.write([item]);
+      return;
+    }
+
+    // Fallback: plain text only
+    if (navigator.clipboard?.writeText) {
+      await navigator.clipboard.writeText(plain);
+      return;
+    }
+
+    throw new Error("Clipboard API unavailable.");
+  }
+
+  function escapeHtml(s) {
+    return String(s)
+      .replaceAll("&", "&amp;")
+      .replaceAll("<", "&lt;")
+      .replaceAll(">", "&gt;")
+      .replaceAll('"', "&quot;")
+      .replaceAll("'", "&#39;");
+  }
+
+  function escapeHtmlAttr(s) {
+    return escapeHtml(s);
+  }
+})();