for-funsies/scripts/build_site.js at main · ghzhost/for-funsies · GitHub

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#!/usr/bin/env node
/**
 * Assemble dist/ for GitHub Pages.
 *
 * `tsc` has already emitted dist/js. This copies the static shell and the
 * ledger the page reads at runtime, generates pre-rendered award detail
 * pages and a contributors view, then generates the generative garden SVG
 * from the repository's own commit history.
 *
 * No bundler, no dependencies.
 */

import { cp, mkdir, readFile, readdir, writeFile } from "node:fs/promises";
import { existsSync, readFileSync } from "node:fs";
import { execSync } from "node:child_process";
import { dirname } from "node:path";

import { renderGarden, buildSnapshot } from "../dist/js/garden.js";
import { safeUrl } from "../dist/js/ledger.js";

const DIST = "dist";
const OWNER = "jflournoy";
const REPO = "for-funsies";
const GITHUB_BASE = `https://github.com/${OWNER}/${REPO}`;

// ── Ledger parsing (mirrors src/ledger.ts, but no DOM dependency) ────────

const COLUMNS = 9;
const AWARD_KINDS = new Set(["bounty", "proposal", "proposal-shipped", "implementation"]);

function stripLink(cell) {
  const m = /^\[([^\]]*)\]\([^)]*\)$/.exec(cell.trim());
  return (m ? m[1] : cell).trim();
}

function parseLedger(markdown) {
  const entries = [];
  for (const line of markdown.split("\n")) {
    const trimmed = line.trim();
    if (!trimmed.startsWith("|")) continue;
    const cells = trimmed.slice(1, -1).split("|").map((c) => c.trim());
    if (cells.length !== COLUMNS) continue;
    const index = Number.parseInt(stripLink(cells[0] ?? ""), 10);
    if (!Number.isFinite(index)) continue;
    const kind = stripLink(cells[3] ?? "").replace(/`/g, "");
    if (!AWARD_KINDS.has(kind)) continue;
    entries.push({
      index,
      date: stripLink(cells[1] ?? ""),
      contributor: stripLink(cells[2] ?? ""),
      kind,
      pr: stripLink(cells[4] ?? ""),
      prLink: safeUrl(cells[4] ?? ""),
      issue: stripLink(cells[5] ?? ""),
      issueLink: safeUrl(cells[5] ?? ""),
      amount: stripLink(cells[6] ?? ""),
      denomination: stripLink(cells[7] ?? ""),
      notes: stripLink(cells[8] ?? ""),
    });
  }
  return entries;
}

// URL sanitizing lives in src/ledger.ts (safeUrl) so the build and the
// runtime share one allowlist. It also rejects control characters and
// whitespace, which can smuggle a scheme past a plain prefix check.

// ── HTML helpers (safe — no template injection) ──────────────────────────

function esc(s) {
  return String(s ?? "")
    .replace(/&/g, "&amp;")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;")
    .replace(/'/g, "&#39;");
}

// Footer links are built from GITHUB_BASE, a module constant — no ledger data
// reaches them. Assembled here so the marker sits on a code line rather than
// inside the emitted HTML.
const SOURCE_LINK = `<a href="${GITHUB_BASE}">Source</a>`; // xss-ok: constant
const BOUNTIES_LINK = `<a href="${GITHUB_BASE}/issues?q=is%3Aissue+is%3Aopen+label%3Abounty">Open bounties</a>`; // xss-ok: constant

function pageShell(title, bodyContent, extraMeta = "") {
  return `<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>${esc(title)} — for-funsies</title>
    <meta
      http-equiv="Content-Security-Policy"
      content="default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; base-uri 'none'; form-action 'none'; object-src 'none'"
    />
    <link rel="stylesheet" href="./style.css" />
    ${extraMeta}
  </head>
  <body>
    <header>
      <h1><a href="./" class="header-link">The GSD Ledger</a></h1>
      <nav class="nav-links">
        <a href="./">Ledger</a>
        <a href="./contributors.html">Contributors</a>
      </nav>
    </header>
    <main>
      ${bodyContent}
    </main>
    <footer>
      <p>
        GSD is a joke currency with no monetary value and no redemption
        mechanism. <strong>USD is also a joke currency</strong> — here it means
        Unsung Sycophant Dividend, not the United States dollar. It is not
        pegged to one and cannot be exchanged for one. There is no real money
        here and none is implied.
      </p>
      <p>
        ${SOURCE_LINK} ·
        ${BOUNTIES_LINK}
      </p>
    </footer>
  </body>
</html>`;
}

// ── Page generators ──────────────────────────────────────────────────────

function awardPage(entry) {
  // prLink/issueLink are already safeUrl() output (null unless they match the
  // repository origin), so the ternary falls back to plain text for anything
  // an agent smuggled in. The trailing marker tells check_xss.py the value on
  // this line is sanitized upstream.
  const prHtml = entry.prLink
    ? `<a href="${esc(entry.prLink)}">${esc(entry.pr)}</a>` // xss-ok: safeUrl at parse
    : esc(entry.pr);
  const issueHtml = entry.issueLink
    ? `<a href="${esc(entry.issueLink)}">${esc(entry.issue)}</a>` // xss-ok: safeUrl at parse
    : esc(entry.issue);
  // Relative same-site anchor, not a ledger URL.
  const contributorLink = `./contributors.html#${esc(entry.contributor)}`; // xss-ok: relative
  const contributorHtml = `<a href="${contributorLink}">${esc(entry.contributor)}</a>`; // xss-ok: relative

  const body = `
      <div class="detail-card">
        <p class="back-link"><a href="./">&larr; Back to Ledger</a></p>
        <h2>Award #${esc(String(entry.index))}</h2>
        <table class="detail-table">
          <tr><th>Date</th><td>${esc(entry.date)}</td></tr>
          <tr><th>Contributor</th><td>${contributorHtml}</td></tr>
          <tr><th>Kind</th><td>${esc(entry.kind)}</td></tr>
          <tr><th>PR</th><td>${prHtml}</td></tr>
          <tr><th>Issue</th><td>${issueHtml}</td></tr>
          <tr><th>Amount</th><td>${esc(entry.amount)} ${esc(entry.denomination)}</td></tr>
          <tr><th>Notes</th><td>${esc(entry.notes)}</td></tr>
        </table>
      </div>`;
  return pageShell(`Award #${entry.index}`, body);
}

function contributorsPage(entries) {
  // Aggregate by contributor
  const map = new Map();
  for (const e of entries) {
    if (!map.has(e.contributor)) {
      map.set(e.contributor, { contributor: e.contributor, awards: [], totalGsd: 0 });
    }
    const c = map.get(e.contributor);
    c.awards.push(e);
    if (e.denomination.toUpperCase() === "GSD") {
      c.totalGsd += Number.parseFloat(e.amount) || 0;
    }
  }
  const sorted = [...map.values()].sort((a, b) => b.totalGsd - a.totalGsd);

  let rows = "";
  for (const c of sorted) {
    let awards = "";
    for (const a of c.awards) {
      awards += `<li><a href="./award-${a.index}.html">#${a.index}</a> — ${esc(a.kind)}, ${esc(a.amount)} ${esc(a.denomination)}${a.notes ? `: ${esc(a.notes)}` : ""}</li>`;
    }
    const contributorId = esc(c.contributor);
    const targetId = `c-${contributorId.replace(/[^a-zA-Z0-9_-]/g, "_")}`;
    rows += `<tr id="${targetId}">
      <td><strong>${esc(c.contributor)}</strong></td>
      <td class="num">${c.totalGsd.toFixed(2)} GSD</td>
      <td>${c.awards.length}</td>
      <td><ul class="award-list">${awards}</ul></td>
    </tr>`;
  }

  const body = `
      <p class="back-link"><a href="./">&larr; Back to Ledger</a></p>
      <h2>Contributors</h2>
      ${entries.length === 0 ? '<p class="empty">No awards yet. Be the first!</p>' : `
      <div class="table-wrap">
        <table>
          <thead>
            <tr>
              <th>Contributor</th>
              <th>Total GSD</th>
              <th>Awards</th>
              <th>Details</th>
            </tr>
          </thead>
          <tbody>
            ${rows}
          </tbody>
        </table>
      </div>`}`;
  return pageShell("Contributors", body);
}

// ── Main ─────────────────────────────────────────────────────────────────

async function main() {
  await mkdir(DIST, { recursive: true });

  // Copy static site files
  if (existsSync("site")) {
    await cp("site", DIST, { recursive: true });
  }

  // Copy the ledger for runtime loading
  if (existsSync("GSD-LEDGER.md")) {
    await cp("GSD-LEDGER.md", `${DIST}/GSD-LEDGER.md`);
  }

  // Parse the ledger and generate pages
  const ledgerRaw = await readFile("GSD-LEDGER.md", "utf-8");
  const entries = parseLedger(ledgerRaw);

  if (entries.length > 0) {
    // Generate award detail pages
    for (const entry of entries) {
      const filename = `award-${entry.index}.html`;
      const html = awardPage(entry);
      await writeFile(`${DIST}/${filename}`, html, "utf-8");
    }

    // Generate contributors page
    const html = contributorsPage(entries);
    await writeFile(`${DIST}/contributors.html`, html, "utf-8");
  }

  // ── Generative garden ────────────────────────────────────────────────
  // Derive the garden from real repository data: commit history + ledger.
  // This is deterministic per commit, so the garden grows as the repo does
  // and two consecutive builds are never identical.

  const commits = [];
  try {
    const log = execSync("git log '--format=%H|%an|%aI' --max-count=200", {
      encoding: "utf-8",
      timeout: 10_000,
    });
    for (const line of log.trim().split("\n")) {
      const parts = line.split("|");
      if (parts.length >= 3) {
        commits.push({ hash: parts[0], author: parts[1], date: parts[2] });
      }
    }
  } catch {
    // git unavailable (e.g. detached build) — garden will be empty but
    // the page still renders. A single dummy commit keeps the field alive.
    commits.push({ hash: "no-repo", author: "build", date: new Date().toISOString() });
  }

  // Extract contributor handles from the GSD ledger — real repo data.
  const contributors = new Set();
  try {
    const ledger = readFileSync("GSD-LEDGER.md", "utf-8");
    for (const line of ledger.split("\n")) {
      const trimmed = line.trim();
      if (!trimmed.startsWith("|")) continue;
      const cells = trimmed.slice(1, -1).split("|").map((c) => c.trim());
      const cell = cells[2]; // Contributor column
      if (cell && cell.startsWith("@")) {
        contributors.add(cell.replace(/^@/, ""));
      }
    }
  } catch {
    // no ledger yet — fine
  }

  const snapshot = buildSnapshot(commits, [...contributors]);
  const svg = renderGarden(snapshot);
  await writeFile(`${DIST}/garden.svg`, svg, "utf-8");
  console.log("Generated garden.svg: " + snapshot.build + " builds, " + commits.length + " commits, " + contributors.size + " contributors.");

  const files = await readdir(DIST, { recursive: true });
  console.log(`Built ${DIST}/ with ${files.length} entries${entries.length > 0 ? ` (${entries.length} award pages + contributors page)` : "."}`);
}

main().catch((error) => {
  console.error(error);
  process.exit(1);
});