#!/bin/bash
# file: gsl__auth_manager
# Folder: /var/lib/gsl/scripts
# By echolib
# License: GNU AFFERO GENERAL PUBLIC LICENSE Version 3, 19 November 2007

#=======================================================================
# Manage Authors from DOMAIN
#=======================================================================
gsl__authors_check() {
gsl_save_dir_ndd=`grep "$gsl_find_domain" "$gsl_file_db_domains"`
gsl_file_auth_ndd="$gsl_save_dir_ndd/$gsl_filename_auth"

if [[ -f "$gsl_file_auth_ndd" ]];then
  [[ -z `grep '[^[:space:]]' "$gsl_file_auth_ndd"` ]] \
    && echo "# Domain: $gsl_find_domain" \
    && echo "! No Registred authors yet..." \
    && return 1
fi
  
touch "$gsl_file_auth_ndd"
}

#=======================================================================
# List Authors from DOMAIN
#=======================================================================
gsl__authors_list() {

case "$1" in
  check)
    gsl__authors_check || return
    return
    ;;
  add)
    gsl__authors_check || return
    ;;
  remove)
    gsl__authors_check || return
    ;;
esac

echo -e "\n# Authors Registred:"
while read -r "line_nbr" "author"
do
  echo "  $line_nbr: $author"
done < <(cat -n "$gsl_file_auth_ndd")
}

#=======================================================================
# Add Author(s) for DOMAIN to authors.db in Profile User
#=======================================================================
gsl__authors_add() {
gsl__authors_list add

printf '\n%s\n%s\n%s\n \n' \
       "# You can add one or more Authors" \
       "  Use comma (,) delimiter (i.e. Joe Foo,Jane)" \
       "   || empty field to cancel"

echo -ne "# Add author(s) name : " && IFS="," read -a gsl_new_authors
[[ "$gsl_new_authors" ]] || return

gsl_nbr_authors=${#gsl_new_authors[@]}
for i in `seq 0 $(( gsl_nbr_authors - 1 ))`
do
  echo "${gsl_new_authors[i]}" >> "$gsl_file_auth_ndd" && \
  gsl__logs_print \
    "$gsl_log_i" \
    "Author" \
    "Added" \
    "${gsl_new_authors[i]} for domain $gsl_find_domain" \
    "$gsl_file_auth_ndd"
done

gsl__authors_list
}

#=======================================================================
# Remove Author(s) for DOMAIN from authors.db in Profile User
#=======================================================================
gsl__authors_remove() {
gsl__authors_list remove || exit 1

printf '\n%s\n%s\n%s\n \n' \
       "# You can REMOVE one or more Authors" \
       "  Enter numbers (space delimiter)" \
       "   || empty field to cancel"

read -rp "! Which numbers author to REMOVE ? " gsl_rm_authors
gsl_rm_authors=($gsl_rm_authors)

gsl_nbr_authors=`cat $gsl_file_auth_ndd | wc -l`
for line in ${gsl_rm_authors[@]}
do
  [[ $line =~ ^[0-9]+$ ]] || continue
  (( $line < 1 )) && continue
  (( $line > $gsl_nbr_authors )) && continue
  
  if [[ $rm_line ]];then
    ! (( $line == 1 )) && line=$(( line - 1 ))
  fi
  gsl_rm_author=`awk -v n="$line" 'NR == n' "$gsl_file_auth_ndd"`
  sed -i "${line}d" "$gsl_file_auth_ndd" && \
  gsl__logs_print \
    "$gsl_log_i" \
    "Author" \
    "Removed" \
    "$gsl_rm_author for domain $gsl_find_domain" \
    "$gsl_file_auth_ndd"
  echo "  - Removed > $gsl_rm_author <"
  rm_line=true
done

gsl__authors_list
}