init

2026-09-19 20:21:47 +02:00
commit 0798933b05
62 changed files with 7658 additions and 0 deletions
@@ -0,0 +1,59 @@
+// Downlink viewer: hex dump of the ship's transmit buffer, with download.
+
+import { api } from './api.js';
+import { h, clear, toast, download } from './dom.js';
+import { hexView } from './hexview.js';
+
+export function downlinkView(ctx) {
+  const ship = ctx.ship;
+  const body = h('div', { class: 'panel-body' }, h('p', { class: 'dim' }, ship ? 'ACQUIRING SIGNAL...' : 'YOU HAVE NO SHIP.'));
+  const meta = h('span', { class: 'dim' });
+  const dl = h('button', { class: 'btn', type: 'button', disabled: true }, 'DOWNLOAD .BIN');
+  const refresh = h('button', { class: 'btn', type: 'button', disabled: !ship }, 'REFRESH');
+
+  let current = null;
+  async function fetchIt() {
+    if (!ship) return;
+    refresh.disabled = true;
+    try {
+      const { bytes, day } = await api.downlink(ship.id);
+      current = { bytes, day };
+      const allZero = bytes.every((b) => b === 0);
+      meta.textContent = `SHIP #${ship.id}  //  FROM THE RUN OF DAY ${day}  //  ${bytes.length} BYTES`;
+      dl.disabled = false;
+      clear(body).append(
+        ...(allZero ? [h('p', { class: 'warn' }, 'BUFFER IS ALL ZEROS: THE SHIP HAS NOT WRITTEN ANYTHING TO ITS DOWNLINK BUFFER.')] : []),
+        hexView(bytes).el,
+        h('p', { class: 'hint' }, 'OFFSETS ARE INTO THE 1 KB DOWNLINK BUFFER (SHIP RAM 1024-2047). MULTI-BYTE VALUES ARE LITTLE-ENDIAN.'),
+      );
+    } catch (e) {
+      current = null;
+      dl.disabled = true;
+      meta.textContent = '';
+      clear(body).append(
+        e.status === 404
+          ? h('div', { class: 'nosignal' },
+              h('p', { class: 'big' }, 'NO SIGNAL'),
+              h('p', { class: 'dim' }, 'THIS SHIP HAS NOT TRANSMITTED YET. A SHIP\'S FIRST DOWNLINK ARRIVES AFTER ITS FIRST DAY IN THE BELT.'))
+          : h('p', { class: 'bad' }, `ERROR: ${e.message}`),
+      );
+    } finally {
+      refresh.disabled = false;
+    }
+  }
+
+  // Reloading the account too keeps the ship's status and the day current.
+  refresh.addEventListener('click', () => ctx.refresh().catch((e) => toast(e.message, 'err')));
+  dl.addEventListener('click', () => {
+    if (!current) return;
+    download(`ship-${ship.id}-day-${current.day}-downlink.bin`, current.bytes);
+    toast(`SAVED ${current.bytes.length} BYTES`);
+  });
+  fetchIt();
+
+  return h('section', { class: 'panel' },
+    h('div', { class: 'panel-title' }, 'DOWNLINK RECEIVER', h('span', { class: 'spacer' }), meta),
+    h('div', { class: 'toolbar pad' }, refresh, h('span', { class: 'spacer' }), dl),
+    body,
+  );
+}