setup-uv/src/download/download-version.ts

import * as core from "@actions/core";
import * as tc from "@actions/tool-cache";
import * as path from "path";
import { OWNER, REPO, TOOL_CACHE_NAME } from "../utils/constants";
import { Architecture, Platform } from "../utils/platforms";
import { validateChecksum } from "./checksum/checksum";

export function tryGetFromToolCache(
  arch: Architecture,
  version: string,
): string | undefined {
  core.debug(`Trying to get uv from tool cache for ${version}...`);
  const cachedVersions = tc.findAllVersions(TOOL_CACHE_NAME, arch);
  core.debug(`Cached versions: ${cachedVersions}`);
  return tc.find(TOOL_CACHE_NAME, version, arch);
}

export async function downloadVersion(
  platform: Platform,
  arch: Architecture,
  version: string,
  checkSum: string | undefined,
  githubToken: string | undefined,
): Promise<string> {
  const artifact = `uv-${arch}-${platform}`;
  let downloadUrl = `https://github.com/${OWNER}/${REPO}/releases/download/${version}/${artifact}`;
  if (platform === "pc-windows-msvc") {
    downloadUrl += ".zip";
  } else {
    downloadUrl += ".tar.gz";
  }
  core.info(`Downloading uv from "${downloadUrl}" ...`);

  const downloadPath = await tc.downloadTool(
    downloadUrl,
    undefined,
    githubToken,
  );
  await validateChecksum(checkSum, downloadPath, arch, platform, version);

  let uvDir: string;
  if (platform === "pc-windows-msvc") {
    uvDir = await tc.extractZip(downloadPath);
    // On windows extracting the zip does not create an intermediate directory
  } else {
    const extractedDir = await tc.extractTar(downloadPath);
    uvDir = path.join(extractedDir, artifact);
  }

  return await tc.cacheDir(uvDir, TOOL_CACHE_NAME, version, arch);
}