Run action on different platforms (#65)

src/install.ts

@@ -1,21 +1,55 @@
 import * as core from "@actions/core"
 import * as tc from "@actions/tool-cache"
+import os from "os"
 import path from "path"
 import { run as setupGo } from "setup-go/lib/main"
 
 import { VersionConfig } from "./version"
 
+const downloadURL = "https://github.com/golangci/golangci-lint/releases/download"
+
+const getAssetURL = (versionConfig: VersionConfig): string => {
+  let ext = "tar.gz"
+  let platform = os.platform().toString()
+  switch (platform) {
+    case "win32":
+      platform = "windows"
+      ext = "zip"
+      break
+  }
+  let arch = os.arch()
+  switch (arch) {
+    case "x64":
+      arch = "amd64"
+      break
+    case "x32":
+    case "ia32":
+      arch = "386"
+      break
+  }
+  const noPrefix = versionConfig.TargetVersion.slice(1)
+
+  return `${downloadURL}/${versionConfig.TargetVersion}/golangci-lint-${noPrefix}-${platform}-${arch}.${ext}`
+}
+
 // The installLint returns path to installed binary of golangci-lint.
 export async function installLint(versionConfig: VersionConfig): Promise<string> {
   core.info(`Installing golangci-lint ${versionConfig.TargetVersion}...`)
   const startedAt = Date.now()
+  const assetURL = getAssetURL(versionConfig)
+  core.info(`Downloading ${assetURL} ...`)
+  const archivePath = await tc.downloadTool(assetURL)
+  let extractedDir = ""
+  let repl = /\.tar\.gz$/
+  if (assetURL.endsWith("zip")) {
+    extractedDir = await tc.extractZip(archivePath, process.env.HOME)
+    repl = /\.zip$/
+  } else {
+    extractedDir = await tc.extractTar(archivePath, process.env.HOME)
+  }
 
-  core.info(`Downloading ${versionConfig.AssetURL} ...`)
-  const tarGzPath = await tc.downloadTool(versionConfig.AssetURL)
-  const extractedDir = await tc.extractTar(tarGzPath, process.env.HOME)
-
-  const urlParts = versionConfig.AssetURL.split(`/`)
-  const dirName = urlParts[urlParts.length - 1].replace(/\.tar\.gz$/, ``)
+  const urlParts = assetURL.split(`/`)
+  const dirName = urlParts[urlParts.length - 1].replace(repl, ``)
   const lintPath = path.join(extractedDir, dirName, `golangci-lint`)
   core.info(`Installed golangci-lint into ${lintPath} in ${Date.now() - startedAt}ms`)
   return lintPath