app/routes/colophon.tsx

Functions

Imports

It imports app/components/evidence-row.tsx, app/components/page-shell.tsx, app/lib/colophon-sections.mjs, app/lib/context.ts, app/lib/health/snapshot.server.ts, app/lib/seo.ts. No module of this repo imports it.

Source

1import { Link } from "react-router";
2
3import { EvidenceRow } from "~/components/evidence-row";
4import { getEnv } from "~/lib/context";
5import { readHealthTile } from "~/lib/health/snapshot.server";
6import type { Route } from "./+types/colophon";
7
8import features from "../../content/features.json";
9import {
10  COLOPHON_DESCRIPTION,
11  COLOPHON_INTRO,
12  COLOPHON_VERSIONS,
13  COLOPHON_SECTIONS,
14  AI_DISCLOSURE,
15  CAPSID_REPO_URL,
16  CAPSOMER_NAME,
17  CAPSOMER_SENTENCE_REST,
18  CAPSOMER_URL,
19  CARREL_NAME,
20  CARREL_PAGE_PATH,
21  CARREL_SENTENCE_REST,
22  SECURITY_TRADEOFF,
23  SITE_OPERATION,
24  COLOPHON_TITLE,
25  statusLabel,
26  COLOPHON_URL,
27} from "~/lib/colophon-sections.mjs";
28import stack from "../../content/generated/stack.json";
29import { PageShell } from "~/components/page-shell";
30import { HEALTH_EDGE_CACHE_CONTROL, publicHtmlHeaders, SITE,
31  pageMeta,
32} from "~/lib/seo";
33
34import "~/styles/evidence-row.css";
35import "~/styles/prose.css";
36
37/**
38 * Publicly cacheable for cookieless readers only; workers/app.ts downgrades the rest. The short edge
39 * policy is for the health tile.
40 */
41export function headers() {
42  return publicHtmlHeaders(undefined, HEALTH_EDGE_CACHE_CONTROL);
43}
44
45/**
46 * The cached page must not lie: only a `fresh` verdict shows a ratio, with its age in
47 * `data-health-age`. Nothing here starts a health run: a Worker fetching its own public URL is an
48 * edge round trip naming an origin that changes at cutover.
49 */
50export async function loader({ context }: Route.LoaderArgs) {
51  return { health: await readHealthTile(getEnv(context)) };
52}
53
54/**
55 * The URL is /colophon (the IndieWeb path machines expect) and the title "How this site is built"
56 * (the words readers know). Do not swap them. New facts belong in `stack-notes.json`, where the gate
57 * reconciles them.
58 */
59
60export function meta() {
61  return pageMeta({
62    title: `${COLOPHON_TITLE}, ${SITE.name}`,
63    description: COLOPHON_DESCRIPTION,
64    path: COLOPHON_URL,
65  });
66}
67
68/** `recordsForPage` reads the same list, so no record can point at a fragment the page does not render. */
69function SectionHead({ id }: { id: string }) {
70  const section = COLOPHON_SECTIONS.find((s) => s.id === id);
71  if (!section) throw new Error(`unknown colophon section "${id}"`);
72  return (
73    <>
74      <h2 id={section.id}>{section.title}</h2>
75      <p>{section.lead}</p>
76    </>
77  );
78}
79
80type Anchor = {
81  kind: string;
82  path?: string;
83  gate?: string;
84  text?: string;
85  id?: string;
86  anonymousGet?: boolean;
87};
88
89function byComponent() {
90  const groups = new Map<string, typeof features.features>();
91  for (const feature of features.features) {
92    const existing = groups.get(feature.component);
93    if (existing) existing.push(feature);
94    else groups.set(feature.component, [feature]);
95  }
96  return [...groups.entries()];
97}
98
99/** A gate anchor names the script rather than linking: the scripts are not served. */
100function AnchorItem({ anchor }: { anchor: Anchor }) {
101  if (anchor.kind === "route" && anchor.path) {
102    /* A link a reader cannot follow reads as evidence until clicked, so such a path is named, not linked. */
103    const followable =
104      !anchor.path.includes(":") &&
105      !anchor.path.includes("*") &&
106      anchor.anonymousGet !== false;
107    return (
108      <li>
109        <span className="muted">route </span>
110        {followable ? (
111          <Link to={anchor.path}>
112            <code>{anchor.path}</code>
113          </Link>
114        ) : (
115          <code>{anchor.path}</code>
116        )}
117      </li>
118    );
119  }
120  if (anchor.kind === "gate") {
121    return (
122      <li>
123        <span className="muted">gate </span>
124        <code>{anchor.gate}</code>
125      </li>
126    );
127  }
128  if (anchor.kind === "assertion") {
129    return (
130      <li>
131        <span className="muted">assertion in </span>
132        <code>{anchor.gate}</code>
133        <span className="muted">: </span>
134        <q>{anchor.text}</q>
135      </li>
136    );
137  }
138  return (
139    <li>
140      <span className="muted">decision </span>
141      <code>{anchor.id}</code>
142    </li>
143  );
144}
145
146export default function Colophon({ loaderData }: Route.ComponentProps) {
147  const { health } = loaderData;
148  const gates = stack.gates.length;
149  /*
150   * `missing` and `stale` show no ratio: a number beside "health checks passing" is read as the
151   * current answer whatever sentence sits under it.
152   */
153  const healthValue =
154    health.state === "fresh" ? `${health.total - health.failed}/${health.total}` : "--";
155  const healthAge = "ageSeconds" in health ? String(health.ageSeconds) : undefined;
156
157  return (
158    <PageShell>
159      <h1 className="page-title">{COLOPHON_TITLE}</h1>
160
161      {/* `data-health-age` is in seconds: `check:browser` and `verify-live` read the attribute, not the sentence. */}
162      <div className="colophon-evidence">
163        <EvidenceRow
164          facts={[
165            <a href="#bindings">{stack.bindings.length} resources</a>,
166            <a href="#gates">
167              {gates} {gates === 1 ? "check" : "checks"}
168            </a>,
169            <span className="evidence-health" data-health-age={healthAge}>
170              <Link to="/api/health">
171                {/* A failed read says so; "--" is kept for a snapshot that was never written or is too old. */}
172                {health.state === "unreadable" ? "health status unreadable" : `${healthValue} passing`}
173              </Link>
174            </span>,
175          ]}
176        />
177      </div>
178
179      <div className="prose">
180        <p>{COLOPHON_VERSIONS}</p>
181        <p>{COLOPHON_INTRO}</p>
182
183        <SectionHead id="runtime" />
184        <dl>
185          <dt>Compatibility date</dt>
186          <dd>
187            <code>{stack.runtime.compatibilityDate}</code>
188          </dd>
189          <dt>Compatibility flags</dt>
190          <dd>
191            {stack.runtime.compatibilityFlags.length > 0
192              ? stack.runtime.compatibilityFlags.join(", ")
193              : "none"}
194          </dd>
195          <dt>Node</dt>
196          <dd>
197            <code>{stack.runtime.nodeVersion}</code>
198          </dd>
199        </dl>
200
201        <SectionHead id="bindings" />
202        <p>{stack.bindings.length} resources.</p>
203        {stack.bindings.map((binding) => (
204          <section key={binding.id} aria-labelledby={`binding-${binding.name}`}>
205            <h3 id={`binding-${binding.name}`}>
206              <code>{binding.name}</code>{" "}
207              <span className="muted">({binding.kind})</span>
208            </h3>
209            <p>{binding.what}</p>
210            <p>
211              <strong>Why it is load-bearing.</strong> {binding.whyLoadBearing}
212            </p>
213          </section>
214        ))}
215
216        <SectionHead id="schema" />
217        <p>{stack.migrations.length} migrations.</p>
218        <ul>
219          {stack.migrations.map((file) => (
220            <li key={file}>
221              <code>{file}</code>
222            </li>
223          ))}
224        </ul>
225
226        <SectionHead id="gates" />
227        <p>{stack.gates.length} checks.</p>
228        <ul>
229          {stack.gates.map((gate) => (
230            <li key={gate}>
231              <code>{gate}</code>
232            </li>
233          ))}
234        </ul>
235
236        <SectionHead id="dependencies" />
237        <p>{stack.dependencies.length} runtime dependencies.</p>
238        <ul>
239          {stack.dependencies.map((dep) => (
240            <li key={dep.name}>
241              <code>{dep.name}</code> <span className="muted dep-range">{dep.range}</span>
242            </li>
243          ))}
244        </ul>
245
246        <SectionHead id="features" />
247        <p>{features.features.length} entries.</p>
248
249        {byComponent().map(([component, entries]) => (
250          <section key={component} aria-labelledby={`c-${component.replace(/\s+/g, "-")}`}>
251            <h3 id={`c-${component.replace(/\s+/g, "-")}`}>{component}</h3>
252            {entries.map((feature) => (
253              <section key={feature.name}>
254                <h4>{feature.name}</h4>
255                <p>{feature.what}</p>
256                <ul>
257                  {(feature.anchors as Anchor[]).map((anchor, i) => (
258                    <AnchorItem key={i} anchor={anchor} />
259                  ))}
260                </ul>
261              </section>
262            ))}
263          </section>
264        ))}
265
266        <SectionHead id="security" />
267        {SECURITY_TRADEOFF.map((sentence) => (
268          <p key={sentence.slice(0, 32)}>{sentence}</p>
269        ))}
270
271        <SectionHead id="ai" />
272        {AI_DISCLOSURE.map((sentence) => (
273          <p key={sentence.slice(0, 32)}>{sentence}</p>
274        ))}
275
276        <SectionHead id="run" />
277        {SITE_OPERATION.map((sentence) => (
278          <p key={sentence.slice(0, 32)}>{sentence}</p>
279        ))}
280        <p>
281          <Link to={CARREL_PAGE_PATH}>{CARREL_NAME}</Link>
282          {CARREL_SENTENCE_REST}
283        </p>
284        <p>
285          Capsid's source is public <a href={CAPSID_REPO_URL}>on GitHub</a>.
286        </p>
287        <p>
288          <a href={CAPSOMER_URL}>{CAPSOMER_NAME}</a>
289          {CAPSOMER_SENTENCE_REST}
290        </p>
291
292        <SectionHead id="not-adopted" />
293        <p>{stack.notAdopted.length} entries.</p>
294        <dl>
295          {stack.notAdopted.map((entry) => (
296            <div key={entry.name}>
297              <dt>
298                {entry.name}{" "}
299                <span className="muted">({statusLabel(entry.status)})</span>
300              </dt>
301              <dd>{entry.reason}</dd>
302            </div>
303          ))}
304        </dl>
305      </div>
306
307      <p className="muted">
308        For what the site records about a visit, and where each of those facts lives in
309        the code, see <Link to="/privacy">privacy</Link>.
310      </p>
311    </PageShell>
312  );
313}