From 336b3101519c32428e73599ec4f41f91fe8ef31a Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Sat, 29 Jan 2022 12:43:51 +0100
Subject: [PATCH] cli: add initial experimental repo sub-command with build

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
---
 packages/cli/src/commands/index.ts      | 16 ++++++
 packages/cli/src/commands/repo/build.ts | 75 +++++++++++++++++++++++++
 2 files changed, 91 insertions(+)
 create mode 100644 packages/cli/src/commands/repo/build.ts

diff --git a/packages/cli/src/commands/index.ts b/packages/cli/src/commands/index.ts
index a33e7d4afe..b7de9ced14 100644
--- a/packages/cli/src/commands/index.ts
+++ b/packages/cli/src/commands/index.ts
@@ -25,6 +25,21 @@ const configOption = [
   Array<string>(),
 ] as const;
 
+export function registerRepoCommand(program: CommanderStatic) {
+  const command = program
+    .command('repo [command]', { hidden: true })
+    .description(
+      'Command that run across an entire Backstage project [EXPERIMENTAL]',
+    );
+
+  command
+    .command('build')
+    .description(
+      'Build all packages in the project that use the standard backstage build script',
+    )
+    .action(lazy(() => import('./repo/build').then(m => m.command)));
+}
+
 export function registerScriptCommand(program: CommanderStatic) {
   const command = program
     .command('script [command]', { hidden: true })
@@ -312,6 +327,7 @@ export function registerCommands(program: CommanderStatic) {
     .description('Print configuration schema')
     .action(lazy(() => import('./config/schema').then(m => m.default)));
 
+  registerRepoCommand(program);
   registerScriptCommand(program);
   registerMigrateCommand(program);
 
diff --git a/packages/cli/src/commands/repo/build.ts b/packages/cli/src/commands/repo/build.ts
new file mode 100644
index 0000000000..50198772d7
--- /dev/null
+++ b/packages/cli/src/commands/repo/build.ts
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import chalk from 'chalk';
+import { relative as relativePath } from 'path';
+import { buildPackages, Output } from '../../lib/builder';
+import { PackageGraph } from '../../lib/monorepo';
+import { paths } from '../../lib/paths';
+import { getRoleInfo } from '../../lib/role';
+
+const outputMap = {
+  esm: Output.esm,
+  cjs: Output.cjs,
+  types: Output.types,
+  bundle: undefined,
+};
+
+export async function command(): Promise<void> {
+  const packages = await PackageGraph.listTargetPackages();
+
+  const options = packages.flatMap(pkg => {
+    const role = pkg.packageJson.backstage?.role;
+    if (!role) {
+      console.warn(`Ignored ${pkg.packageJson.name} because it has no role`);
+      return [];
+    }
+
+    const roleInfo = getRoleInfo(role);
+    const outputs = roleInfo.output
+      .map(output => outputMap[output])
+      .filter((x): x is Output => Boolean(x));
+    if (outputs.length === 0) {
+      console.warn(`Ignored ${pkg.packageJson.name} because it has no output`);
+      return [];
+    }
+
+    const buildScript = pkg.packageJson.scripts?.build;
+    if (!buildScript) {
+      console.warn(
+        `Ignored ${pkg.packageJson.name} because it has no build script`,
+      );
+      return [];
+    }
+    if (!buildScript.startsWith('backstage-cli script build')) {
+      console.warn(
+        `Ignored ${pkg.packageJson.name} because it has a custom build script, '${buildScript}'`,
+      );
+      return [];
+    }
+
+    return {
+      targetDir: pkg.dir,
+      outputs: new Set(outputs),
+      logPrefix: `${chalk.cyan(relativePath(paths.targetRoot, pkg.dir))}: `,
+      // TODO(Rugvip): Use commander to parse the script and grab these instead
+      minify: buildScript.includes('--minify'),
+      useApiExtractor: buildScript.includes('--experimental-type-build'),
+    };
+  });
+
+  await buildPackages(options);
+}