Render textured aerial maps and support legacy recovery links

scripts/render-map.mjs

@@ -1,7 +1,7 @@
-import { readFile, mkdir } from "node:fs/promises";
-import { dirname, resolve } from "node:path";
+import { readFile, mkdir, mkdtemp, copyFile, rm } from "node:fs/promises";
+import { dirname, resolve, sep } from "node:path";
 import { gunzipSync } from "node:zlib";
-import { renderSurfaceMap } from "../renderer/surface-map.mjs";
+import { renderSnapshot } from "../renderer/render.mjs";
 
 const [input, output] = process.argv.slice(2);
 if (!input || !output)
@@ -13,8 +13,17 @@ const terrain = JSON.parse(
     maxOutputLength: 256 * 1024 * 1024,
   }).toString(),
 );
-await mkdir(dirname(resolve(output)), { recursive: true });
-const report = await renderSurfaceMap(terrain, output);
-console.log(
-  `Rendered ${report.width} × ${report.height} map cells from ${report.columns.toLocaleString()} surface columns: ${output}`,
-);
+const parent = dirname(resolve(output));
+await mkdir(parent, { recursive: true });
+const temporary = await mkdtemp(resolve(parent, ".minegeo-map-"));
+try {
+  const report = await renderSnapshot(terrain, [], temporary);
+  await copyFile(resolve(temporary, "map.webp"), resolve(output));
+  console.log(
+    `Rendered ${report.map.width} × ${report.map.height} aerial map from Y=${report.map.cameraY}: ${output}`,
+  );
+} finally {
+  if (!temporary.startsWith(parent + sep))
+    throw new Error("Refusing to remove a map directory outside its parent");
+  await rm(temporary, { recursive: true, force: true });
+}