add --silent flag, and naive subshell detection, implements #160

packages/core/src/cli/commands/resolve.command.ts

@@ -15,13 +15,15 @@ import { addWatchMode } from '../lib/watch-mode-helpers';
 import { CliExitError } from '../lib/cli-error';
 import { checkForConfigErrors, checkForSchemaErrors } from '../lib/check-errors-helpers';
 import { stringifyObjectAsEnvFile } from '../lib/env-file-helpers';
+import { isSubshell } from '../lib/shell-helpers';
 
 const program = new DmnoCommand('resolve')
   .summary('Loads config schema and resolves config values')
   .description('Loads the resolved config for a service')
   .option('-f,--format <format>', 'format to output resolved config (ex. json)')
   .option('--public', 'only loads public (non-sensitive) values')
   .option('--show-all', 'shows all items, even when config is failing')
+  .option('--silent', 'automatically select defaults and do not prompt for any input')
   .example('dmno resolve', 'Loads the resolved config for the root service')
   .example('dmno resolve --service service1', 'Loads the resolved config for service1')
   .example('dmno resolve --service service1 --format json', 'Loads the resolved config for service1 in JSON format')
@@ -43,12 +45,18 @@ program.action(async (opts: {
   format?: string,
   public?: boolean,
   showAll?: boolean,
+  silent?: boolean,
 }, thisCommand) => {
   const ctx = getCliRunCtx();
 
+  const isSilent = !!opts.silent || isSubshell();
+  // console.log('isSilent', isSilent);
+  // console.log('subshell', isSubshell());
+
   if (opts.format) ctx.expectingOutput = true;
 
-  if (!ctx.selectedService) return; // error message already handled
+  if (!ctx.selectedService && !isSilent) return; // error message already handled
+
 
   ctx.log(`\nResolving config for service ${kleur.magenta(ctx.selectedService.serviceName)}\n`);
 

packages/core/src/cli/lib/shell-helpers.test.ts

@@ -0,0 +1,15 @@
+import { execSync, spawn } from 'child_process';
+import { expect, test, describe } from 'vitest';
+import { isSubshell } from './shell-helpers';
+
+describe('isSubshell', () => {
+  test('basic', () => {
+    expect(isSubshell()).toBe(false);
+  });
+  test('subshell', () => {
+    const child = spawn('bash', ['-c', 'echo $PPID $(echo $PPID)']);
+    child.stdout.on('data', () => {
+      expect(isSubshell()).toBe(true);
+    });
+  });
+});

packages/core/src/cli/lib/shell-helpers.ts

@@ -0,0 +1 @@
+export const isSubshell = () => (process.env.BASH_SUBSHELL && process.env.BASH_SUBSHELL !== '0') || false;