#!/bin/bash

red(){
  echo -e "\033[31m$1\033[0m"
}

green(){
  echo -e "\033[32m$1\033[0m"
}


# 动态安装软件包
install_package() {
  local PACKAGE_NAME=$1
  if command -v "$PACKAGE_NAME" &> /dev/null; then
    echo "$PACKAGE_NAME 已安装, 跳过."
    return 0
  fi

  echo "安装 $PACKAGE_NAME..."
  sleep 1
  local PACKAGE_MANAGER
  PACKAGE_MANAGER=$(get_package_manager)
  if [ "$PACKAGE_MANAGER" == "apt-get" ]; then
    sudo apt-get update
    sudo apt-get install -y "$PACKAGE_NAME"
  elif [ "$PACKAGE_MANAGER" == "yum" ]; then
    sudo yum install -y "$PACKAGE_NAME"
  else
    echo "未知的包管理器, 请手动安装 $PACKAGE_NAME."
    return 1
  fi
}

# 获取系统包管理器
get_package_manager(){
  if command -v apt-get &> /dev/null; then
    echo "apt-get"
  elif command -v yum &> /dev/null; then
    echo "yum"
  else
    echo "未知的系统包管理器"
    return 1  # 返回错误状态码
  fi
}

# 检查 jq 是否已安装
check_jq() {
    if command -v jq >/dev/null 2>&1; then
        return 0
    else
        echo "jq 未安装"
        return 1
    fi
}


# URL编码
url_encode() {
    local STR="$1"
    local ENCODED=""
    local I CHAR HEX

    for ((I = 0; I < ${#STR}; I++)); do
        CHAR="${STR:$I:1}"
        case "$CHAR" in
            [a-zA-Z0-9.~_-]) ENCODED+="$CHAR" ;;
            *) 
                printf -v HEX '%02X' "'$CHAR"
                ENCODED+="%$HEX"
                ;;
        esac
    done
    echo "$ENCODED"
}


# 展示当前值并询问用户新输入的值
# 用法: ask_update "提示语" "当前值(当前配置文件的值)"
# 示例: 
#  NEW_PORT=$(ask_update "请输入新的端口号" "$(jq -r '.inbounds[0].port' $CONFIG_DIR/config.json)")
ask_update() {
    local PROMPT="$1" # 提示语
    local CURRENT_VALUE="$2" 
    local INPUT

    read -p "${PROMPT} [当前: ${CURRENT_VALUE}]: " INPUT
    # 用户直接回车则保留当前值，否则使用新输入
    echo "${INPUT:-$CURRENT_VALUE}"
}