fix: use http client for downloading brew + fix brew ARM path

src/brew/brew.ts

@@ -1,62 +1,79 @@
 import { tmpdir } from "os"
-import path, { join } from "path"
-import { mkdirP } from "@actions/io"
+import { join } from "path"
 import { addPath } from "envosman"
 import { execaSync } from "execa"
-import { readFile } from "fs/promises"
 import { dirname } from "patha"
 import which from "which"
 import { rcOptions } from "../cli-options.js"
+import { HttpClient } from "@actions/http-client"
+import { writeFile } from "fs/promises"
 
 /* eslint-disable require-atomic-updates */
 let binDir: string | undefined
 
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 export async function setupBrew(_version: string, _setupDir: string, _arch: string) {
+  // brew is only available on darwin and linux
   if (!["darwin", "linux"].includes(process.platform)) {
     return undefined
   }
+
+  // check if the function has already been called
   if (typeof binDir === "string") {
     return { binDir }
   }
 
-  const maybeBinDir = which.sync("brew", { nothrow: true })
+  // check if brew is already installed
+  const maybeBinDir = await which("brew", { nothrow: true })
   if (maybeBinDir !== null) {
     binDir = dirname(maybeBinDir)
     return { binDir }
   }
 
-  // brew is not thread-safe
-  const brewTempDirectory = path.join(tmpdir(), "setup-cpp", "brew")
-  await mkdirP(brewTempDirectory)
+  // download the installation script
+  const installerPath = join(tmpdir(), "install-brew.sh")
 
-  execaSync("curl", ["-LJO", "https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh"], {
-    cwd: brewTempDirectory,
-  })
-  const installSh = join(brewTempDirectory, "install.sh")
-
-  if (process.platform === "linux") {
-    const installShContent = await readFile(installSh, "utf-8")
-    installShContent.replace("#!/bin/bash", "")
+  const http = new HttpClient("setup-brew")
+  const response = await http.get("https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh")
+  if (response.message.statusCode !== 200) {
+    throw new Error(`Failed to download brew installation script: ${response.message.statusCode}`)
   }
 
-  execaSync("/bin/bash", [installSh], {
+  await writeFile(installerPath, await response.readBody())
+
+  // brew installation is not thread-safe
+  execaSync("/bin/bash", [installerPath], {
     stdio: "inherit",
     env: {
       NONINTERACTIVE: "1",
     },
   })
 
+  // add the bin directory to the PATH
   binDir = getBrewPath()
   await addPath(binDir, rcOptions)
 
   return { binDir }
 }
 
+/**
+ * Get the path where brew is installed
+ * @returns {string} The path where brew is installed
+ *
+ * Based on the installation script from https://brew.sh
+ */
 export function getBrewPath() {
+  if (process.platform === "darwin") {
+    if (process.arch === "arm64") {
+      return "/opt/homebrew/bin/"
+    } else {
+      return "/usr/local/bin/"
+    }
+  }
+
   if (process.platform === "linux") {
     return "/home/linuxbrew/.linuxbrew/bin/"
-  } else {
-    return "/usr/local/bin/"
   }
+
+  throw new Error("Unsupported platform for brew")
 }