#!/bin/bash

REMOVE=false
CLEAR_CACHE=false

for arg in "$@"; do
  shift
  case "$arg" in
    "--remove") set -- "$@" "-r" ;;
    "--clear-cache") set -- "$@" "-c" ;;
    "--help")   set -- "$@" "-h" ;;
    *)        set -- "$@" "$arg"
  esac
done
shift $((OPTIND -1))

while getopts ":rch" opt; do
  case $opt in
    r )
      REMOVE=true
      ;;
    c )
      CLEAR_CACHE=true
      ;;
    h )
      echo "Usage: haur [--remove | -r] | [--clear-cache | -c] <package names>"
      exit 0
      ;;
    \?)
      echo "Invalid Option: -$OPTARG" 1>&2
      exit 1
      ;;
    esac
done
shift $((OPTIND -1))


if [ $REMOVE == true ]; then
  for PACKAGE_NAME in "$@"; do
    echo "Removing $PACKAGE_NAME..."
    sudo pacman -Rns $PACKAGE_NAME
    echo $PACKAGE_NAME > ~/.haur_cache
  done
  if [ $CLEAR_CACHE == true ]; then
    if test -f "$HOME/.haur_cache"; then
      echo "Clearing cache..."
      while IFS= read -r line || [[ -n "$line" ]]; do
        echo "Removing $line"
        rm -rf $HOME/.haur/$line
      done < "$HOME/.haur_cache"
      rm ~/.haur_cache
    else
      echo "Nothing to clear"
    fi
  fi
else
  if [ $CLEAR_CACHE == true ]; then
    if test -f "$HOME/.haur_cache"; then
      echo "Clearing cache..."
      while IFS= read -r line || [[ -n "$line" ]]; do
        echo "Removing $line"
        rm -rf $HOME/.haur/$line
      done < "$HOME/.haur_cache"
      rm ~/.haur_cache
    else
      echo "Nothing to clear"
    fi
  fi
  for PACKAGE_NAME in "$@"; do
    echo "Installing $PACKAGE_NAME..."
    mkdir -p ~/.haur
    cd ~/.haur
    git clone https://aur.archlinux.org/$PACKAGE_NAME.git
    cd $PACKAGE_NAME
    makepkg -si
  done
fi