Initial commit

skills/cli-patterns/scripts/generate-subcommands.sh

@@ -0,0 +1,174 @@
+#!/bin/bash
+# Generate CLI with subcommands structure
+
+set -euo pipefail
+
+APP_NAME="${1:-myapp}"
+
+echo "Generating CLI with subcommands: $APP_NAME"
+
+# Create project structure
+mkdir -p "$APP_NAME/commands"
+cd "$APP_NAME"
+
+# Initialize Go module
+go mod init "$APP_NAME" 2>/dev/null || true
+
+# Install urfave/cli
+echo "Installing urfave/cli v2..."
+go get github.com/urfave/cli/v2@latest
+
+# Create main.go
+cat > main.go <<'EOF'
+package main
+
+import (
+	"log"
+	"os"
+
+	"github.com/urfave/cli/v2"
+)
+
+func main() {
+	app := &cli.App{
+		Name:    "APP_NAME_PLACEHOLDER",
+		Usage:   "A multi-command CLI tool",
+		Version: "0.1.0",
+		Commands: []*cli.Command{
+			{
+				Name:    "start",
+				Aliases: []string{"s"},
+				Usage:   "Start the service",
+				Flags: []cli.Flag{
+					&cli.IntFlag{
+						Name:    "port",
+						Aliases: []string{"p"},
+						Value:   8080,
+						Usage:   "Port to listen on",
+					},
+				},
+				Action: func(c *cli.Context) error {
+					return startCommand(c)
+				},
+			},
+			{
+				Name:    "stop",
+				Usage:   "Stop the service",
+				Action:  stopCommand,
+			},
+			{
+				Name:    "status",
+				Usage:   "Check service status",
+				Action:  statusCommand,
+			},
+			{
+				Name:    "config",
+				Usage:   "Configuration management",
+				Subcommands: []*cli.Command{
+					{
+						Name:   "show",
+						Usage:  "Show current configuration",
+						Action: configShowCommand,
+					},
+					{
+						Name:   "set",
+						Usage:  "Set configuration value",
+						Action: configSetCommand,
+					},
+				},
+			},
+		},
+	}
+
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
+}
+EOF
+
+# Create commands.go
+cat > commands.go <<'EOF'
+package main
+
+import (
+	"fmt"
+
+	"github.com/urfave/cli/v2"
+)
+
+func startCommand(c *cli.Context) error {
+	port := c.Int("port")
+	fmt.Printf("Starting service on port %d...\n", port)
+	return nil
+}
+
+func stopCommand(c *cli.Context) error {
+	fmt.Println("Stopping service...")
+	return nil
+}
+
+func statusCommand(c *cli.Context) error {
+	fmt.Println("Service status: running")
+	return nil
+}
+
+func configShowCommand(c *cli.Context) error {
+	fmt.Println("Current configuration:")
+	fmt.Println("  port: 8080")
+	fmt.Println("  host: localhost")
+	return nil
+}
+
+func configSetCommand(c *cli.Context) error {
+	key := c.Args().Get(0)
+	value := c.Args().Get(1)
+
+	if key == "" || value == "" {
+		return fmt.Errorf("usage: config set <key> <value>")
+	}
+
+	fmt.Printf("Setting %s = %s\n", key, value)
+	return nil
+}
+EOF
+
+# Replace placeholder
+sed -i "s/APP_NAME_PLACEHOLDER/$APP_NAME/g" main.go
+
+# Create README
+cat > README.md <<EOF
+# $APP_NAME
+
+A CLI tool with subcommands built with urfave/cli.
+
+## Installation
+
+\`\`\`bash
+go install
+\`\`\`
+
+## Usage
+
+\`\`\`bash
+# Start service
+$APP_NAME start --port 8080
+$APP_NAME s -p 3000
+
+# Stop service
+$APP_NAME stop
+
+# Check status
+$APP_NAME status
+
+# Configuration
+$APP_NAME config show
+$APP_NAME config set host 0.0.0.0
+\`\`\`
+EOF
+
+# Build
+echo "Building..."
+go build -o "$APP_NAME" .
+
+echo "✅ CLI with subcommands generated successfully!"
+echo "Run: ./$APP_NAME --help"