#!/usr/bin/env zsh
# The ZPE plugin helper. Copyright 2020 Armaan Bhojwani, MIT License

config_dir=$HOME/.config/zpe/
plugin_dir=$HOME/.config/zpe/plugins/

zpe-meta-pre() {
  [[ -d "$config_dir" ]] || mkdir -p "$config_dir"
  touch "$config_dir"repositories
  [[ -d "$plugin_dir" ]] || mkdir -p "$plugin_dir"
  [[ -x git ]] && echo "please install git"
  [[ -x find ]] && echo "please install find"
  [[ -x diff ]] && echo "please install diff"
}

zpe-clone() {
  zpe-meta-pre
  while read line; do
    git -C "$plugin_dir" clone $line --depth=1 2> /dev/null
  done < "${config_dir}repositories"
  echo "all plugins are downloaded"
}

zpe-pull() {
  zpe-meta-pre
  local find_dirs=$(find "$plugin_dir" -name ".git" -type d)
  echo $find_dirs | xargs -P10 -I{} git --git-dir={} config pull.ff only
  echo $find_dirs |  xargs  -P10 -I{} git --git-dir={} pull > /dev/null
  echo "all plugins are up to date"
}

zpe-clean() {
  [[ -d /tmp/zpe ]] || mkdir /tmp/zpe/
  find $plugin_dir -maxdepth 1 -type d -exec git -C {} config --get remote.origin.url \; > /tmp/zpe/installed-urls
  comm -23 <(sort /tmp/zpe/installed-urls) <(sort "$config_dir"repositories) >> /tmp/zpe/diff

  for d in "$plugin_dir"*; do
    while read line; do
      grep -l $line "$d"/.git/config >> /tmp/zpe/deletable
    done < /tmp/zpe/diff
  done

  while read line2; do
    xargs rm -rf <<< $(echo $line2 | sed 's/\/.git\/config//g')
  done < /tmp/zpe/deletable
}

zpe-source() {
  source "$plugin_dir"/$1
}