Refactor entire project (#39)

- Use more modern TypeScript conventions
- Use JavaScript Kubernetes Client
- Add unit tests
- Add integration tests
- Add TypeScript compile verify workflow
- Switch codeowners

src/run.ts

@@ -0,0 +1,36 @@
+import * as core from "@actions/core";
+import * as path from "path";
+import * as fs from "fs";
+import { Cluster, parseCluster } from "./types/cluster";
+import { setContext, getKubeconfig } from "./utils";
+
+/**
+ * Sets the Kubernetes context based on supplied action inputs
+ */
+export async function run() {
+  // get inputs
+  const clusterType: Cluster | undefined = parseCluster(
+    core.getInput("cluster-type", {
+      required: true,
+    })
+  );
+  const runnerTempDirectory: string = process.env["RUNNER_TEMP"];
+  const kubeconfigPath: string = path.join(
+    runnerTempDirectory,
+    `kubeconfig_${Date.now()}`
+  );
+
+  // get kubeconfig and update context
+  const kubeconfig: string = await getKubeconfig(clusterType);
+  const kubeconfigWithContext: string = setContext(kubeconfig);
+
+  // output kubeconfig
+  core.debug(`Writing kubeconfig contents to ${kubeconfigPath}`);
+  fs.writeFileSync(kubeconfigPath, kubeconfigWithContext);
+  fs.chmodSync(kubeconfigPath, "600");
+  core.debug("Setting KUBECONFIG environment variable");
+  core.exportVariable("KUBECONFIG", kubeconfigPath);
+}
+
+// Run the application
+run().catch(core.setFailed);