package utils

import (
	"encoding/json"
	"fmt"
)

// PrettyPrint prints a data structure as a pretty JSON string.
func PrettyPrint(v interface{}) {
	b, err := json.MarshalIndent(v, "", "  ")
	if err != nil {
		fmt.Println("error:", err)
	}
	fmt.Println(string(b))
}

// Truncate returns a truncated version of s with at most maxLen characters.
func Truncate(s string, maxLen int) string {
	if len(s) <= maxLen {
		return s
	}
	if maxLen <= 3 {
		return s[:maxLen]
	}
	return s[:maxLen-3] + "..."
}