#!/usr/bin/env bash
#
# Author: Konstantin Gredeskoul, at Homebase,
#         © 2018 All rights reserved, MIT License.
#
# LibBash Bootstrap Installer. It can be run straight off github and it downloads the
# larger bootstrap script, which then does the rest of the setup.
#
# This library will install `./bin/bootstrap` script relative to the local folder,
# as well clone this repo into `../lib-bash`, and then create a symlink from `bin/lib-bash` to
# `../lib-bash/lib`. This way you can leverage all helpers defined in this project in your code.
#
# Run me as:
#
#     curl -fsSL https://raw.githubusercontent.com/pioneerworks/lib-bash/master/bin/install | bash
#
export True=1
export False=0

export ProjectRoot=$(pwd)

export LibBash__RandomQueryString="q=${RANDOM}-$(date '+%s')"

export LibBash__BootstrapExec="bootstrap"
export LibBash__BinPath="bin"
export LibBash__RelPath="${ProjectRoot}/../lib-bash"
export LibBash__BootstrapLibPath="${LibBash__RelPath}/${LibBash__BinPath}/${LibBash__BootstrapExec}"
export LibBash__BootstrapLocalPath="${LibBash__BinPath}/${LibBash__BootstrapExec}"
export LibBash__Branch="master"
export LibBash__GithubURL="https://raw.githubusercontent.com/pioneerworks/lib-bash"
export LibBash__InstallerURL="${LibBash__GithubURL}/${LibBash__Branch}/bin/install?${LibBash__RandomQueryString}"
export LibBash__BootstrapURL="${LibBash__GithubURL}/${LibBash__Branch}/bin/${LibBash__BootstrapExec}?${LibBash__RandomQueryString}"

unset LibBash__Downloader

[[ -z ${LibBash__Downloader} && -n $(which curl) ]] && export LibBash__Downloader="curl -fsSL --connect-timeout 5 --retry-delay 10 --retry-max-time 300 --retry 15"
[[ -z ${LibBash__Downloader} && -n $(which wget) ]] && export LibBash__Downloader="wget -q --connect-timeout=5 --retry-connrefused --tries=15 -O -"

[[ -z "${LibBash__Downloader}" ]] && {
  printf "Error: can't figure out how to download things. No curl or wget found."
  exit 1
}

debug_log() {
  if [[ -n ${DEBUG} || ${USER} == "kig" ]] ; then
    [[ -n ${LIB_BASH_QUIET} ]] || printf " ${bldwht}${bakgrn} ✔ ${clr} ${txtgrn}${1}${clr}\n"
  fi
}

debug_log "using downloader ${bldylw}${LibBash__Downloader}"

lib::bash::clean-old-bootstrap() {
  if [[ -d ${LibBash__BinPath} ]] ; then
    find ${LibBash__BinPath} -mmin +1440 -type f -name ${LibBash__BootstrapExec} -print -exec rm {} \;
  fi
}

lib::bash::bootstrap() {
  lib::bash::clean-old-bootstrap

  if [[ ! -s "${LibBash__BootstrapLocalPath}" ]]; then
    mkdir -p $(dirname ${LibBash__BootstrapLocalPath}) > /dev/null
    if [[ -s ${LibBash__BootstrapLibPath} ]]; then
      debug_log "${LibBash__BootstrapLibPath} exists, copying to ${bldylw}${LibBash__BootstrapLocalPath}"
      cp -p ${LibBash__BootstrapLibPath} ${LibBash__BootstrapLocalPath} > /dev/null
    else
      debug_log "grabbing bootstrap script from:\n  → ${italic}${undblu}${LibBash__BootstrapURL}"
      ${LibBash__Downloader} ${LibBash__BootstrapURL} > ${LibBash__BootstrapLocalPath}
    fi
    touch ${LibBash__BootstrapLocalPath}
    chmod 755 ${LibBash__BootstrapLocalPath} > /dev/null
  fi

  if [[ -s "${LibBash__BootstrapLocalPath}" ]]; then
    debug_log "running script ${bldylw}${LibBash__BootstrapLocalPath}"
    if [[ -s ${LibBash__BootstrapLocalPath} ]]; then
      source ${LibBash__BootstrapLocalPath}
      # only run the function if it's defined
      type lib::bash::bootstrap::main 2>/dev/null 1>/dev/null && lib::bash::bootstrap::main
    fi
  fi
}

lib::bash::bootstrap