#!/usr/bin/env bash
# utils.sh — colors, prompts, helpers

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
BOLD='\033[1m'
RESET='\033[0m'

info()    { echo -e "${CYAN}${BOLD}[info]${RESET}  $*"; }
success() { echo -e "${GREEN}${BOLD}[ok]${RESET}    $*"; }
warn()    { echo -e "${YELLOW}${BOLD}[warn]${RESET}  $*"; }
error()   { echo -e "${RED}${BOLD}[error]${RESET} $*" >&2; }
die()     { error "$*"; exit 1; }
header()  { echo -e "\n${BOLD}${CYAN}━━━  $*  ━━━${RESET}\n"; }

# ask VAR "prompt" "default"
ask() {
    local var="$1" prompt="$2" default="$3"
    if [[ -n "$default" ]]; then
        echo -ne "${BOLD}${prompt}${RESET} ${CYAN}[${default}]${RESET}: "
    else
        echo -ne "${BOLD}${prompt}${RESET}: "
    fi
    read -r input
    if [[ -z "$input" && -n "$default" ]]; then
        eval "$var=\"$default\""
    else
        eval "$var=\"$input\""
    fi
}

# ask_yn VAR "prompt" "y|n"
ask_yn() {
    local var="$1" prompt="$2" default="$3"
    local options
    if [[ "$default" == "y" ]]; then options="Y/n"; else options="y/N"; fi
    echo -ne "${BOLD}${prompt}${RESET} ${CYAN}[${options}]${RESET}: "
    read -r input
    input="${input:-$default}"
    if [[ "$input" =~ ^[Yy]$ ]]; then
        eval "$var=y"
    else
        eval "$var=n"
    fi
}

# ask_choice VAR "prompt" option1 option2 ...
ask_choice() {
    local var="$1" prompt="$2"; shift 2
    local options=("$@")
    echo -e "${BOLD}${prompt}${RESET}"
    for i in "${!options[@]}"; do
        echo -e "  ${CYAN}$((i+1))${RESET}) ${options[$i]}"
    done
    echo -ne "Choice ${CYAN}[1]${RESET}: "
    read -r input
    input="${input:-1}"
    if [[ "$input" =~ ^[0-9]+$ ]] && (( input >= 1 && input <= ${#options[@]} )); then
        eval "$var=\"${options[$((input-1))]}\""
    else
        eval "$var=\"${options[0]}\""
    fi
}

require_cmd() {
    command -v "$1" &>/dev/null || die "Required command not found: $1"
}

slugify() {
    echo "$1" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]/-/g' | sed 's/-\+/-/g' | sed 's/^-//;s/-$//'
}