Create version-manifest.json on uv release (#399)

src/download/version-manifest.ts

@@ -0,0 +1,52 @@
+import { promises as fs } from "node:fs";
+import * as core from "@actions/core";
+import * as semver from "semver";
+
+interface VersionManifestEntry {
+  version: string;
+  artifactName: string;
+  arch: string;
+  platform: string;
+  downloadUrl: string;
+}
+
+export async function getLatestKnownVersion(
+  versionManifestFile: string,
+): Promise<string> {
+  const data = await fs.readFile(versionManifestFile);
+  const versionManifestEntries: VersionManifestEntry[] = JSON.parse(
+    data.toString(),
+  );
+  return versionManifestEntries.reduce((a, b) =>
+    semver.gt(a.version, b.version) ? a : b,
+  ).version;
+}
+
+export async function updateVersionManifest(
+  versionManifestFile: string,
+  downloadUrls: string[],
+): Promise<void> {
+  const versionManifest: VersionManifestEntry[] = [];
+
+  for (const downloadUrl of downloadUrls) {
+    const urlParts = downloadUrl.split("/");
+    const version = urlParts[urlParts.length - 2];
+    const artifactName = urlParts[urlParts.length - 1];
+    if (!artifactName.startsWith("uv-")) {
+      continue;
+    }
+    if (artifactName.startsWith("uv-installer")) {
+      continue;
+    }
+    const artifactParts = artifactName.split(".")[0].split("-");
+    versionManifest.push({
+      version: version,
+      artifactName: artifactName,
+      arch: artifactParts[1],
+      platform: artifactName.split(`uv-${artifactParts[1]}-`)[1].split(".")[0],
+      downloadUrl: downloadUrl,
+    });
+  }
+  core.debug(`Updating version manifest: ${JSON.stringify(versionManifest)}`);
+  await fs.writeFile(versionManifestFile, JSON.stringify(versionManifest));
+}