install platform.sh cli

src/main.ts

@@ -1,9 +1,31 @@
 import * as core from '@actions/core'
+import { exec } from '@actions/exec'
 
 /**
  * The main function for the action.
  * @returns {Promise<void>} Resolves when the action is complete.
  */
 export async function run(): Promise<void> {
+  const action = core.getInput('action')
+  if (!['deploy', 'clean'].includes(action)) {
+    throw new Error('Invalid action to perform')
+  }
+
+  core.startGroup('Install Platform.sh cli')
+  const cliVersion = core.getInput('cli-version')
+  let cliInstallUrl =
+    'curl -fsSL https://raw.githubusercontent.com/platformsh/cli/main/installer.sh | bash'
+  if (cliVersion !== 'latest') {
+    // Validate version input to prevent command injection
+    if (!/^[\d.]+$/.test(cliVersion)) {
+      throw new Error(
+        'Invalid version format. Only numbers and dots are allowed.'
+      )
+    }
+    cliInstallUrl = `curl -fsSL https://raw.githubusercontent.com/platformsh/cli/main/installer.sh | VERSION=${cliVersion} bash`
+  }
+  await exec(cliInstallUrl)
+  core.endGroup()
+
   core.info('Inside custom action')
 }