#!/bin/bash
# Ver: 1.6 by Endial Fang (endial@126.com)
#
# 通用函数库

# 加载依赖项
source "/usr/local/lib/liblog.sh"

# 函数列表

# 打印包含包含Logo的欢迎信息
print_welcome_info() {
    [[ -n "${APP_NAME:-}" ]] && github_repo="https://gitee.com/colovu/docker-${APP_NAME}"

    info  "  ____      _ "
    info  " / ___|___ | | _____   ___   _ "
    info  "| |   / _ \| |/ _ \ \ / / | | |  Application: ${APP_NAME:-undefined}"
    info  "| |__| (_) | | (_) \ V /| |_| |  Version: ${APP_VER:-0.0.0}"
    info  " \____\___/|_|\___/ \_/  \__,_|  PowerBy: Endial@126.com"
    debug " Project Repo: ${github_repo:-}"
    info  ""
}

# 根据需要打印欢迎信息
print_image_welcome() {
    if [[ -z "${DISABLE_WELCOME_MESSAGE:-}" ]]; then
    if [[ ! "$(id -u)" = "0" ]]; then
        print_welcome_info
    fi
    fi
}

# 检测可能导致容器执行后直接退出的命令，如"--help"；如果存在，直接返回 0
# 参数:
#   $1 - 待检测的参数表
print_command_help() {
    local arg
    for arg; do
        if [[ "$arg" =~ ^(-[?HhVv]|--help|--version)$ ]]; then
                exec "$@"
                exit
        fi
    done
}

# 检测应用相应的配置文件是否存在，如果不存在，则从默认配置文件目录拷贝一份
# 默认配置文件路径：/etc/${APP_NAME}
# 目标配置文件路径：/srv/conf/${APP_NAME}
# 参数：
#   $1 - 基础路径
#   $* - 基础路径下的文件及目录列表，以" "分割
# 例子: 
#   ensure_config_file_exist /etc/${APP_NAME} conf.d server.conf
ensure_config_file_exist() {
    local -r base_path="${1:?paths is missing}"
    shift
    local files=("$@")
    
    debug "List to check: ${files[*]}"
    for f in "${files[@]}"; do
        debug "Processing: ${f}"
        local dist="${base_path/$'\/etc'/$'\/srv\/conf'}/${f}"
        
        if [[ -d "${base_path}/${f}" ]]; then
            [[ ! -d "$dist" ]] && { debug "Creating directory: ${dist}"; mkdir -p "$dist"; }
            [[ $(ls -A "${base_path}/${f}") ]] && 
                ensure_config_file_exist "${base_path}/${f}" $(ls -A "${base_path}/${f}")
        else
            [[ ! -e "$dist" ]] && {
                debug "Copying: ${base_path}/${f} => ${dist}"
                cp "${base_path}/${f}" "$dist"
                rm -f "/srv/conf/${APP_NAME}/.app_init_flag"
            }
        fi
    done
}

# 根据脚本扩展名及权限，执行相应的初始化脚本
# 参数:
#   $1 - 文件列表，支持路径通配符
# 使用: 
#   process_init_files [file [file [...]]]
# 例子: 
#   process_init_files /src/conf/${APP_NAME}/initdb.d/*
process_init_files() {
    local f
    while IFS= read -r -d '' f; do
        case "$f" in
            *.sh)
                if [[ -x "$f" ]]; then
                    info "$0: executing $f"
                    "$f"
                else
                    info "$0: sourcing $f"
                    source "$f"
                fi
                ;;
            *) warn "$0: ignoring $f" ;;
        esac
    done < <(find "$@" -type f -print0 2>/dev/null || true)
}