Initial commit

src/common.ts

@@ -0,0 +1,5 @@
+export interface DownloadRequestData {
+  repoPath: string
+  fileTarget: string
+  token?: string
+}

src/download.ts

@@ -0,0 +1,54 @@
+import * as fs from "fs"
+import * as path from "path"
+import * as thc from "typed-rest-client/HttpClient"
+
+const API_ROOT = "https://api.github.com/repos"
+const httpClient: thc.HttpClient = new thc.HttpClient("gh-api-client")
+
+export async function download(
+  repoPath: string,
+  fileDest: string,
+  token: string
+): Promise<void> {
+  const latestRelease = await getlatestRelease(repoPath)
+  await downloadFile(latestRelease, fileDest)
+  console.log(latestRelease)
+}
+
+async function getlatestRelease(repoPath: string): Promise<[string, string]> {
+  const response = await httpClient.get(
+    `${API_ROOT}/${repoPath}/releases/latest`
+  )
+  const responseBody = await response.readBody()
+  const _release = JSON.parse(responseBody.toString())
+  if (_release && _release["assets"].length > 0) {
+    const asset = _release["assets"][0]
+    return [asset["name"], asset["browser_download_url"]]
+  }
+  return ["", ""]
+}
+
+async function downloadFile(
+  [fileName, downloadUrl]: [string, string],
+  out: string
+): Promise<string> {
+  const response = await httpClient.get(downloadUrl)
+  const outFilePath: string = path.join(out, fileName)
+  const fileStream: NodeJS.WritableStream = fs.createWriteStream(outFilePath)
+
+  if (response.message.statusCode !== 200) {
+    const err: Error = new Error(
+      `Unexpected response: ${response.message.statusCode}`
+    )
+    throw err
+  }
+
+  return new Promise((resolve, reject) => {
+    fileStream.on("error", err => reject(err))
+    const outStream = response.message.pipe(fileStream)
+
+    outStream.on("close", () => {
+      resolve(outFilePath)
+    })
+  })
+}

src/main.ts

@@ -0,0 +1,16 @@
+import * as core from "@actions/core"
+import {download} from "./download"
+
+async function run(): Promise<void> {
+  try {
+    const repoPath = core.getInput("repo-path")
+    const fileDest = core.getInput("target")
+    const token = core.getInput("token")
+    const res = await download(repoPath, fileDest, token)
+    console.log(`Downloaded: ${res}`)
+  } catch (error) {
+    core.setFailed(error.message)
+  }
+}
+
+run()