Initial commit

skills/commander-patterns/templates/nested-subcommands.ts

@@ -0,0 +1,150 @@
+import { Command } from 'commander';
+import chalk from 'chalk';
+
+const program = new Command();
+
+program
+  .name('mycli')
+  .description('CLI with nested subcommands')
+  .version('1.0.0');
+
+// Config command group
+const config = program.command('config').description('Manage configuration');
+
+config
+  .command('get <key>')
+  .description('Get configuration value')
+  .action((key) => {
+    const value = getConfig(key);
+    if (value) {
+      console.log(`${key} = ${value}`);
+    } else {
+      console.log(chalk.yellow(`Config key '${key}' not found`));
+    }
+  });
+
+config
+  .command('set <key> <value>')
+  .description('Set configuration value')
+  .action((key, value) => {
+    setConfig(key, value);
+    console.log(chalk.green(`✓ Set ${key} = ${value}`));
+  });
+
+config
+  .command('list')
+  .description('List all configuration')
+  .option('-f, --format <format>', 'output format (json, table)', 'table')
+  .action((options) => {
+    const allConfig = getAllConfig();
+    if (options.format === 'json') {
+      console.log(JSON.stringify(allConfig, null, 2));
+    } else {
+      Object.entries(allConfig).forEach(([key, value]) => {
+        console.log(`${key.padEnd(20)} ${value}`);
+      });
+    }
+  });
+
+config
+  .command('delete <key>')
+  .description('Delete configuration value')
+  .option('-f, --force', 'skip confirmation', false)
+  .action((key, options) => {
+    if (!options.force) {
+      console.log(chalk.yellow(`Are you sure? Use --force to confirm`));
+      return;
+    }
+    deleteConfig(key);
+    console.log(chalk.green(`✓ Deleted ${key}`));
+  });
+
+// Database command group
+const db = program.command('db').description('Database operations');
+
+db.command('migrate')
+  .description('Run database migrations')
+  .option('-d, --dry-run', 'show what would be migrated')
+  .action((options) => {
+    if (options.dryRun) {
+      console.log(chalk.blue('Dry run: showing migrations...'));
+    } else {
+      console.log(chalk.blue('Running migrations...'));
+    }
+    console.log(chalk.green('✓ Migrations complete'));
+  });
+
+db.command('seed')
+  .description('Seed database with data')
+  .option('-e, --env <env>', 'environment', 'dev')
+  .action((options) => {
+    console.log(chalk.blue(`Seeding ${options.env} database...`));
+    console.log(chalk.green('✓ Seeding complete'));
+  });
+
+db.command('reset')
+  .description('Reset database')
+  .option('-f, --force', 'skip confirmation')
+  .action((options) => {
+    if (!options.force) {
+      console.log(chalk.red('⚠ This will delete all data! Use --force to confirm'));
+      return;
+    }
+    console.log(chalk.yellow('Resetting database...'));
+    console.log(chalk.green('✓ Database reset'));
+  });
+
+// User command group with nested subcommands
+const user = program.command('user').description('User management');
+
+const userList = user.command('list').description('List users');
+userList
+  .option('-p, --page <page>', 'page number', '1')
+  .option('-l, --limit <limit>', 'items per page', '10')
+  .action((options) => {
+    console.log(`Listing users (page ${options.page}, limit ${options.limit})`);
+  });
+
+user
+  .command('create <username> <email>')
+  .description('Create new user')
+  .option('-r, --role <role>', 'user role', 'user')
+  .action((username, email, options) => {
+    console.log(chalk.green(`✓ Created user ${username} (${email}) with role ${options.role}`));
+  });
+
+user
+  .command('delete <userId>')
+  .description('Delete user')
+  .option('-f, --force', 'skip confirmation')
+  .action((userId, options) => {
+    if (!options.force) {
+      console.log(chalk.red('Use --force to confirm deletion'));
+      return;
+    }
+    console.log(chalk.green(`✓ Deleted user ${userId}`));
+  });
+
+// Helper functions (mock implementations)
+const configStore: Record<string, string> = {
+  apiUrl: 'https://api.example.com',
+  timeout: '5000',
+};
+
+function getConfig(key: string): string | undefined {
+  return configStore[key];
+}
+
+function setConfig(key: string, value: string): void {
+  configStore[key] = value;
+}
+
+function getAllConfig(): Record<string, string> {
+  return { ...configStore };
+}
+
+function deleteConfig(key: string): void {
+  delete configStore[key];
+}
+
+program.parse();