Read "official" default API versions from spec readmes

Makefile

@@ -231,7 +231,9 @@ bin/$(CODEGEN): .make/prebuild .make/provider_mod_download provider/cmd/$(CODEGE
 
 # Writes schema-full.json and metadata-compact.json to bin/
 # Also re-calculates files in versions/ at same time
-bin/schema-full.json bin/metadata-compact.json &: bin/$(CODEGEN) $(SPECS) versions/az-provider-list.json versions/v${PREVIOUS_MAJOR_VERSION}.yaml versions/v${MAJOR_VERSION}-config.yaml versions/v${MAJOR_VERSION}-spec.yaml versions/v${MAJOR_VERSION}-removed.json versions/v${MAJOR_VERSION}-removed-resources.json versions/v${NEXT_MAJOR_VERSION}-removed-resources.json
+bin/schema-full.json bin/metadata-compact.json &: bin/$(CODEGEN) $(SPECS) versions/az-provider-list.json versions/v${PREVIOUS_MAJOR_VERSION}.yaml versions/v${MAJOR_VERSION}-config.yaml versions/v${MAJOR_VERSION}-spec.yaml versions/v${MAJOR_VERSION}-removed.json versions/v${MAJOR_VERSION}-removed-resources.json versions/v${NEXT_MAJOR_VERSION}-removed-resources.json $(wildcard autorest/*)
+	cd autorest && npm ci && npm start
+	bin/$(CODEGEN) defaultVersions
 	bin/$(CODEGEN) schema
 
 # Docs schema - treat as phony becasuse it's committed so we always need to rebuild it.

autorest/default-config.md

@@ -0,0 +1,5 @@
+
+```yaml
+tag: package-2024-04
+track2: true
+```

autorest/index.ts

@@ -0,0 +1,90 @@
+import { glob } from "fast-glob";
+import { writeFile, readFile } from "fs/promises";
+import * as path from "path";
+import { fileURLToPath } from "url";
+import { ConfigurationLoader } from "@autorest/configuration";
+import {
+  ConsoleLogger,
+  FilterLogger,
+  AutorestSyncLogger,
+} from "@autorest/common";
+import { createFolderUri, createFileOrFolderUri } from "@azure-tools/uri";
+import yaml from "yaml";
+
+(async () => {
+  const logger = new AutorestSyncLogger({
+    sinks: [new ConsoleLogger()],
+    processors: [new FilterLogger({ level: "error" })],
+  });
+  const defaultConfigUri = createFileOrFolderUri(
+    require.resolve(
+      "@autorest/configuration/resources/default-configuration.md"
+    )
+  );
+
+  const specificationRootDir = path.resolve("..", "azure-rest-api-specs");
+  const readmeFiles = await glob("specification/*/resource-manager/readme.md", {
+    cwd: specificationRootDir,
+  });
+
+  const result: string[] = [];
+  for (const readmeFile of readmeFiles) {
+    const configFolderUri = createFolderUri(
+      path.dirname(path.resolve(specificationRootDir, readmeFile))
+    );
+    const configLoader = new ConfigurationLoader(
+      logger,
+      defaultConfigUri,
+      configFolderUri
+    );
+    const config = await configLoader.load([], true);
+    const inputFiles = config.config.inputFileUris.map((uri) =>
+      path.relative(specificationRootDir, fileURLToPath(uri))
+    );
+    result.push(...inputFiles);
+  }
+  result.sort();
+  writeFile(
+    "../reports/autorest-input-files.json",
+    JSON.stringify(result, null, 2)
+  );
+
+  const autorestSpecFilePathsLookup = new Set<string>(result);
+
+  const allResourcesByVersionContent = await readFile(
+    "../reports/allResourcesByVersion.json",
+    "utf-8"
+  );
+  const allResourcesByVersion: Record<
+    ProviderModule,
+    Record<ApiVersion, Record<ResourceName, VersionEntry>>
+  > = JSON.parse(allResourcesByVersionContent);
+  const specVersions: Record<
+    ProviderModule,
+    Record<ResourceName, VersionEntry>
+  > = {};
+  for (const [providerModule, versions] of Object.entries(
+    allResourcesByVersion
+  )) {
+    const module: Record<ResourceName, VersionEntry> = {};
+    specVersions[providerModule] = module;
+    for (const resources of Object.values(versions)) {
+      for (const [resourceName, entry] of Object.entries(resources)) {
+        if (autorestSpecFilePathsLookup.has(entry.SpecFilePath)) {
+          module[resourceName] = entry;
+        }
+      }
+    }
+  }
+  writeFile("../reports/autorest.yaml", yaml.stringify(specVersions, null, 2));
+})().catch(console.error);
+
+type ProviderModule = string;
+type ApiVersion = string;
+type ResourceName = string;
+type VersionEntry = {
+  ApiVersion: ApiVersion;
+  SpecFilePath: string;
+  ResourceUri: string;
+  RpNamespace: string;
+};