Adding basic file browsing support

registry/src/utils.ts

@@ -87,30 +87,38 @@ export function extractPackagePath(path: string): [string, string | undefined] {
    return [packageName, packageVersion];
 }
 
-import db from "./db.ts";
+import type { IPackage } from "./db.ts";
 
 import bucket from "./s3.ts";
 
-export async function getFile(
-   pkgName: string,
-   version: string | null | undefined,
-   file: string
-): Promise<{ etag: string; data: Uint8Array } | null | undefined> {
-   console.log("Searching for file: %s/%s@%s", pkgName, file, version);
-   const meta = await db.package.findOne({ name: pkgName });
+export function getAbsolutePackageVersion(
+   pkg?: IPackage | null,
+   version?: string
+) {
+   if (!pkg || pkg.versions.length < 1) return undefined;
 
-   if (!meta || meta.versions.length < 1) return null;
-
-   const versions = meta.versions.sort(sortVersions).reverse();
+   const versions = pkg.versions.sort(sortVersions).reverse();
 
    if (!version) {
       version = versions[0];
    } else {
       const v = versions.filter((e) => e.startsWith(version as string));
-      if (v.length < 1) return null;
+      if (v.length < 1) return undefined;
       version = v[0];
    }
 
+   return version;
+}
+
+export async function getBucketFilePath(
+   pkgName: string,
+   version: string,
+   file: string
+) {
+   if (file.startsWith("/")) {
+      file = file.substr(1);
+   }
+
    const bucketPath = (
       "packages/" +
       pkgName +
@@ -120,11 +128,24 @@ export async function getFile(
       file
    ).replace(/@/g, "§");
 
+   return bucketPath;
+}
+
+export async function getFile(
+   pkgName: string,
+   version: string | undefined,
+   file: string
+): Promise<{ etag: string; data: Uint8Array } | null | undefined> {
+   if (!version) return undefined;
+   const bucketPath = await getBucketFilePath(pkgName, version, file);
+   if (!bucketPath) return null;
+
    console.log("Getting file from:", bucketPath);
 
    try {
       const res = await bucket.getObject(bucketPath);
-      if (!res) return undefined;
+      if (!res || res.body.byteLength === 0) return undefined;
+
       return {
          etag: res.etag,
          data: res.body,