Add initial workflow code dependent on init

resolve-environment/action.yml

@@ -1,6 +1,13 @@
 name: 'CodeQL: Resolve Build Environment'
 description: 'Attempt to infer a suitable environment configuration for the autobuilder'
 author: 'GitHub'
+inputs:
+  language:
+    description: The language to infer the build environment configuration for.
+    required: true
+outputs:
+  configuration:
+    description: The inferred build environment configuration.
 runs:
   using: 'node16'
   main: '../lib/resolve-environment-action.js'

src/resolve-environment-action.ts

@@ -1,18 +1,75 @@
 import * as core from "@actions/core";
 
-import { checkForTimeout, wrapError } from "./util";
+import {
+  createStatusReportBase,
+  getRequiredInput,
+  getTemporaryDirectory,
+  sendStatusReport,
+} from "./actions-util";
+import { getGitHubVersion } from "./api-client";
+import * as configUtils from "./config-utils";
+import { Language, resolveAlias } from "./languages";
+import { getActionsLogger } from "./logging";
+import { runResolveBuildEnvironment } from "./resolve-environment";
+import { checkForTimeout, checkGitHubVersionInRange, wrapError } from "./util";
+import { validateWorkflow } from "./workflow";
+
+const actionName = "resolve-environment";
 
 async function run() {
-  return;
+  const startedAt = new Date();
+  const logger = getActionsLogger();
+  const language: Language = resolveAlias(getRequiredInput("language"));
+
+  try {
+    const workflowErrors = await validateWorkflow(logger);
+
+    if (
+      !(await sendStatusReport(
+        await createStatusReportBase(
+          actionName,
+          "starting",
+          startedAt,
+          workflowErrors
+        )
+      ))
+    ) {
+      return;
+    }
+
+    const gitHubVersion = await getGitHubVersion();
+    checkGitHubVersionInRange(gitHubVersion, logger);
+
+    const config = await configUtils.getConfig(getTemporaryDirectory(), logger);
+    if (config === undefined) {
+      throw new Error(
+        "Config file could not be found at expected location. Has the 'init' action been called?"
+      );
+    }
+
+    const result = await runResolveBuildEnvironment(config.codeQLCmd, logger, language);
+    core.setOutput("configuration", result);
+  } catch (unwrappedError) {
+    const error = wrapError(unwrappedError);
+    core.setFailed(error.message);
+    await sendStatusReport(
+      await createStatusReportBase(
+        actionName,
+        "aborted",
+        startedAt,
+        error.message,
+        error.stack
+      )
+    );
+    return;
+  }
 }
 
 async function runWrapper() {
   try {
     await run();
   } catch (error) {
-    core.setFailed(
-      `resolve environment action failed: ${wrapError(error).message}`
-    );
+    core.setFailed(`${actionName} action failed: ${wrapError(error).message}`);
   }
   await checkForTimeout();
 }