delete temporary files after import

server/import.mjs

@@ -55,7 +55,8 @@ async function download(id, url, dest) {
 }
 
 async function doImport (owner, repo, id) {
-
+  let artifactId = null
+  try {
     const artifacts = await octokit.request('GET /repos/{owner}/{repo}/actions/artifacts', {
       owner,
       repo,
@@ -66,25 +67,41 @@ async function doImport (owner, repo, id) {
     // choose latest artifact
     const artifact = artifacts.data.artifacts
       .reduce((acc, cur) => acc.created_at < cur.created_at ? cur : acc)
+    artifactId = artifact.id
     const url = artifact.archive_download_url
+    if (!fs.existsSync("tmp")){
+      fs.mkdirSync("tmp");
+    }
     progress[id].output += `Download from ${url}\n`
-  await download(id, url, `artifact_${artifact.id}.zip`)
+    await download(id, url, `tmp/artifact_${artifactId}.zip`)
     progress[id].output += `Download finished.\n`
     progress[id].output += `Unpacking ZIP.\n`
-  const files = await decompress(`artifact_${artifact.id}.zip`, `artifact_${artifact.id}`)
+    const files = await decompress(`tmp/artifact_${artifactId}.zip`, `tmp/artifact_${artifactId}`)
+    if (files.length != 1) { throw Error(`Unexpected number of files in ZIP: ${files.length}`) }
     progress[id].output += `Unpacking TAR.\n`
-  const files_inner = await decompress(`artifact_${artifact.id}/${files[0].path}`, `artifact_${artifact.id}_inner`)
+    const files_inner = await decompress(`tmp/artifact_${artifactId}/${files[0].path}`, `tmp/artifact_${artifactId}_inner`)
-  let manifest = fs.readFileSync(`artifact_${artifact.id}_inner/manifest.json`);
+    let manifest = fs.readFileSync(`tmp/artifact_${artifactId}_inner/manifest.json`);
     manifest = JSON.parse(manifest);
     if (manifest.length !== 1) {
       throw `Unexpected manifest: ${JSON.stringify(manifest)}`
     }
     manifest[0].RepoTags = [`github-${owner}:${repo}`]
-  fs.writeFileSync(`artifact_${artifact.id}_inner/manifest.json`, JSON.stringify(manifest));
+    fs.writeFileSync(`tmp/artifact_${artifactId}_inner/manifest.json`, JSON.stringify(manifest));
-  await runProcess(id, "tar", ["-cvf", `../archive_${artifact.id}.tar`, "."], `artifact_${artifact.id}_inner/`)
+    await runProcess(id, "tar", ["-cvf", `../archive_${artifactId}.tar`, "."], `tmp/artifact_${artifactId}_inner/`)
-  await runProcess(id, "docker", ["load", "-i", `archive_${artifact.id}.tar`])
+    await runProcess(id, "docker", ["load", "-i", `tmp/archive_${artifactId}.tar`])
     progress[id].done = true
     progress[id].output += `Done.\n`
+  } catch (e) {
+    progress[id].output += `Error: ${e.toString()}\n${e.stack}`
+  } finally {
+    if (artifactId) {
+      fs.rmSync(`tmp/artifact_${artifactId}.zip`, {force: true, recursive: true});
+      fs.rmSync(`tmp/artifact_${artifactId}`, {force: true, recursive: true});
+      fs.rmSync(`tmp/artifact_${artifactId}_inner`, {force: true, recursive: true});
+      fs.rmSync(`tmp/archive_${artifactId}.tar`, {force: true, recursive: true});
+    }
+    progress[id].done = true
+  }
 }
 
 export const importTrigger = (req, res) => {