Attempt at first version

src/install.ts

@@ -0,0 +1,63 @@
+import * as fs from 'fs'
+import * as path from 'path'
+import * as core from '@actions/core'
+import * as exec from '@actions/exec'
+import * as tc from '@actions/tool-cache'
+import {
+  ANDROID_SDK_ROOT,
+  COMMANDLINE_TOOLS_LIN_URL,
+  COMMANDLINE_TOOLS_MAC_URL,
+  COMMANDLINE_TOOLS_WIN_URL
+} from './constants'
+
+export async function install(): Promise<void> {
+  const licenseDir = path.join(ANDROID_SDK_ROOT, 'licenses')
+
+  // If the licences exist, the rest does too
+  if (fs.existsSync(licenseDir)) {
+    core.debug(`Skipping install, licenseDir found: ${licenseDir}`)
+    return
+  }
+
+  const acceptBuffer = Buffer.from('y\ny\ny\ny\ny\n\ny', 'utf8')
+
+  if (process.platform === 'linux') {
+    const cmdlineToolsZip = await tc.downloadTool(COMMANDLINE_TOOLS_LIN_URL)
+    const cmdlineTools = await tc.extractZip(cmdlineToolsZip)
+    const sdkManager = path.join(cmdlineTools, 'tools', 'sdkmanager')
+
+    exec.exec(
+      sdkManager,
+      ['--include_obsolete', `--sdk_root=${ANDROID_SDK_ROOT}`, 'tools'],
+      {
+        input: acceptBuffer
+      }
+    )
+  } else if (process.platform === 'darwin') {
+    const cmdlineToolsZip = await tc.downloadTool(COMMANDLINE_TOOLS_MAC_URL)
+    const cmdlineTools = await tc.extractZip(cmdlineToolsZip)
+    const sdkManager = path.join(cmdlineTools, 'tools', 'sdkmanager')
+
+    exec.exec(
+      sdkManager,
+      ['--include_obsolete', `--sdk_root=${ANDROID_SDK_ROOT}`, 'tools'],
+      {
+        input: acceptBuffer
+      }
+    )
+  } else if (process.platform === 'win32') {
+    const cmdlineToolsZip = await tc.downloadTool(COMMANDLINE_TOOLS_WIN_URL)
+    const cmdlineTools = await tc.extractZip(cmdlineToolsZip)
+    const sdkManager = path.join(cmdlineTools, 'tools', 'sdkmanager.bat')
+
+    exec.exec(
+      sdkManager,
+      ['--include_obsolete', `--sdk_root=${ANDROID_SDK_ROOT}`, 'tools'],
+      {
+        input: acceptBuffer
+      }
+    )
+  } else {
+    core.error(`Unsupported platform: ${process.platform}`)
+  }
+}