new stackbrew in js

UPDATE.md

@@ -1,8 +1,8 @@
-# Instuctions to update
+# Instructions to update
 
 ```
 ./update.sh
-./generate-stackbrew-library.sh > ../official-images/library/rocket.chat
+node stackbrew.js > ../official-images/library/rocket.chat
 cd ../official-images
 #git commit && git push && PR
 ```

stackbrew.js

@@ -0,0 +1,82 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const path = require('path');
+
+// Grab last git commit
+function getCommitHasForPath(path) {
+  return require('child_process')
+  .execSync(`git log -1 --format=%H HEAD -- ${path}`)
+  .toString().trim()
+}
+
+const stackbrewPath = path.basename(__filename);
+
+const url = 'https://github.com/RocketChat/Docker.Official.Image';
+
+// Header
+let stackbrew = `# this file is generated via ${url}/blob/${getCommitHasForPath(stackbrewPath)}/${stackbrewPath}
+
+Maintainers: Rocket.Chat Image Team <buildmaster@rocket.chat> (@RocketChat)
+GitRepo: ${url}.git
+GitFetch: refs/heads/main\n`;
+
+// Loop versions
+const rcDirRegex = /^\d+\.\d+$/;
+
+// Returns a list of the child directories in the given path
+const getChildDirectories = (parent) => fs.readdirSync(parent, { withFileTypes: true })
+  .filter((dirent) => dirent.isDirectory())
+  .map(({ name }) => name);
+
+const getRocketChatVersionDirs = (base) => getChildDirectories(base)
+  .filter((childPath) => rcDirRegex.test(path.basename(childPath)));
+
+// versions need to be in order from most recent to older
+const versions = getRocketChatVersionDirs(__dirname)
+  .sort((a,b) => b.localeCompare(a, undefined, { numeric: true, sensitivity: 'base' }));
+
+let foundCurrent = false;
+
+const latestMajor = [];
+
+for (version of versions) {
+  const isCurrent = !foundCurrent;
+  foundCurrent = true;
+
+  let fullversion;
+
+  // Get full version from the first Dockerfile
+  if (!fullversion) {
+    const dockerfile = fs.readFileSync(path.join(version, 'Dockerfile'), 'utf-8');
+    fullversion = dockerfile.match(/ENV RC_VERSION (?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)/)
+  }
+  let tags = [
+    `${fullversion.groups.major}.${fullversion.groups.minor}.${fullversion.groups.patch}`,
+    `${fullversion.groups.major}.${fullversion.groups.minor}`,
+  ];
+
+  const isLatestMajor = !latestMajor.includes(fullversion.groups.major);
+
+  if (isLatestMajor) {
+    tags.push(fullversion.groups.major);
+
+    latestMajor.push(fullversion.groups.major);
+  }
+
+  if (isCurrent) {
+    tags.push('latest');
+  }
+
+  // remove duplicates
+  tags = tags.filter((x, i, a) => a.indexOf(x) == i);
+  tags = tags.sort((a, b) => b - a);
+
+  stackbrew += `\nTags: ${tags.join(', ')}\n`;
+  // stackbrew += `Architectures: ${tbd.join(', ')}\n`
+  stackbrew += `GitCommit: ${getCommitHasForPath(version)}\n`;
+  stackbrew += `Directory: ${version}\n`;
+}
+
+// output
+console.log(stackbrew)