Add /api Pages Functions: now, now/{unit}, from, to

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,2 @@
+node_modules
+.wrangler

README.md

@@ -4,10 +4,28 @@ Live **PRT (Planet Renox Time)**, milliseconds since `1998-03-14T03:00:00.000Z`,
 
 Also on the page: PRT day/week progress, upcoming round-number milestones, next equinox/solstice, a subsolar marker with hover readout (lat/lon, sun altitude, solar time), and a Date ⇄ PRT converter.
 
-Static site, no build step. `ortus` loads from jsDelivr via an import map. Land dots come from Natural Earth 50m land, rasterized to a half-degree RLE mask in `land.js`.
+## API
+
+Cloudflare Pages Functions in `functions/api/`, built on `ortus`. JSON responses carry every unit plus `unixMs` and `iso`; CORS is open.
+
+| | |
+|---|---|
+| `GET /api` | Epoch, units, endpoint list |
+| `GET /api/now` | Current PRT in every unit |
+| `GET /api/now/{unit}` | Current PRT in one unit, plain text |
+| `GET /api/from/{iso\|unixMs}` | PRT at a date, e.g. `/api/from/2010-06-01` |
+| `GET /api/to/{n}/{unit?}` | Date at a PRT value, e.g. `/api/to/11111/d` |
 
 ```sh
-python3 -m http.server   # then open http://localhost:8000
+curl https://time.planetrenox.com/api/now/d   # 10446
+```
+
+## Site
+
+Static page, no build step. `ortus` loads from jsDelivr via an import map. Land dots come from Natural Earth 50m land, rasterized to a half-degree RLE mask in `land.js`.
+
+```sh
+npm i && npm run dev   # wrangler pages dev, serves the site and /api
 ```
 
 Cloudflare Pages: no build command, output directory `/`.

functions/api/[[path]].js

@@ -0,0 +1,36 @@
+import { PRT } from 'ortus'
+
+const U = ['ms', 's', 'm', 'h', 'd', 'w']
+const CORS = { 'access-control-allow-origin': '*' }
+const LIVE = { ...CORS, 'cache-control': 'no-store' }
+const FIXED = { ...CORS, 'cache-control': 'public, max-age=31536000, immutable' }
+const json = (o, headers = LIVE, status = 200) => Response.json(o, { status, headers })
+const at = t => ({ ...Object.fromEntries(U.map(u => [u, PRT.fromUnixMs(t, u)])), unixMs: t, iso: new Date(t).toISOString() })
+const HELP = {
+  name: 'PRT (Planet Renox Time)',
+  epoch: new Date(PRT.toUnixMs(0)).toISOString(),
+  units: U,
+  endpoints: {
+    '/api/now': 'current PRT in every unit',
+    '/api/now/{unit}': 'current PRT in one unit, plain text',
+    '/api/from/{iso|unixMs}': 'PRT at a date',
+    '/api/to/{n}/{unit?}': 'date at a PRT value, unit defaults to ms',
+  },
+}
+
+export const onRequestGet = ({ params: { path = [] } }) => {
+  const [a, b, c, d] = path
+  try {
+    if (a == 'now' && !c) {
+      const t = Date.now()
+      return b ? new Response(PRT.fromUnixMs(t, b) + '\n', { headers: { ...LIVE, 'content-type': 'text/plain' } }) : json(at(t))
+    }
+    if (a == 'from' && b && !c) {
+      const t = new Date(/^-?\d+$/.test(b) ? +b : decodeURIComponent(b))
+      return PRT.fromDate(t), json(at(+t), FIXED)
+    }
+    if (a == 'to' && b && !d) return json(at(PRT.toUnixMs(Number(b), c)), FIXED)
+  } catch (e) { return json({ error: e.message }, CORS, 400) }
+  return json(HELP, CORS, a ? 404 : 200)
+}
+export const onRequestHead = onRequestGet

index.html

@@ -22,7 +22,7 @@
 <body>
 <header class="top wrap">
   <a class="brand" href="/"><span class="orb"></span>PRT</a>
-  <nav><a href="https://www.npmjs.com/package/ortus">ortus ↗</a><a href="https://github.com/planetrenox/ortus">GitHub ↗</a></nav>
+  <nav><a href="/api">API</a><a href="https://www.npmjs.com/package/ortus">ortus ↗</a><a href="https://github.com/planetrenox/ortus">GitHub ↗</a></nav>
 </header>
 
 <main class="wrap" role="timer">

package-lock.json

@@ -0,0 +1,19 @@
+{
+  "name": "time.planetrenox.com",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "time.planetrenox.com",
+      "dependencies": {
+        "ortus": "^0.1.3"
+      }
+    },
+    "node_modules/ortus": {
+      "version": "0.1.3",
+      "resolved": "https://registry.npmjs.org/ortus/-/ortus-0.1.3.tgz",
+      "integrity": "sha512-sojVnSVzJ4hRpqA9JREqxLIAgxIaSMVpQQILWPpuWGLI9XJxsK75wUCzEPyo51vHGzYQVcs/ZZrdDyc7mCCrrw==",
+      "license": "0BSD"
+    }
+  }
+}

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "time.planetrenox.com",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "wrangler pages dev ."
+  },
+  "dependencies": {
+    "ortus": "^0.1.3"
+  }
+}