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

#=======================================================================
# Tool: Source if found
#=======================================================================
gsl__check_source() {
if [[ -f "$1" ]];then
   source "$1"
else
   echo "! Missing file: $1"
   return 1
fi
}

#=======================================================================
# Tool: Check needed file
#=======================================================================
gsl__check_file() {
if ! [[ -f "$1" ]];then
  return
fi
}

#=======================================================================
# Check Needed Folders, and create needed files
#=======================================================================
# Folders
gsl__create_ff() {
for gsl_folder in "$gsl_dir_db" \
                  "$gsl_dir_logs"
do
  if ! [[ -d "$gsl_folder" ]];then
    echo ": Creating $gsl_folder and give permissions to $USER"
    sudo mkdir -p "$gsl_folder" && \
    sudo chown -R $USER:$USER "$gsl_folder"
  fi
done

# Files
for gsl_file in "$gsl_file_logs" \
                "$gsl_file_db_posts" \
                "$gsl_file_db_stats" \
                "$gsl_file_db_files" \
                "$gsl_file_db_domains"
do
  gsl__check_file "$gsl_file" && touch "$gsl_file"
done
}

#=======================================================================
# Check if PWD is configure for DOMAIN
#=======================================================================
gsl__find_domain() {
gsl_nbr_domains=`
find  . -maxdepth 1 -not -type d -type f \
        -iname "gsl.*.*" 2>/dev/null \
    | wc -l`
    
(( $gsl_nbr_domains > 1 )) \
  && echo "! Too much domains registred here: Set only One per folder" \
  && exit $gsl_nbr_domains
(( $gsl_nbr_domains == 0 )) \
  && echo "! No registred domain here: change or set folder. See help new" \
  && exit 1

gsl_find_domain=`
find  . -maxdepth 1 -not -type d -type f \
        -iname "gsl.*.*" 2>/dev/null`

gsl_find_domain=`
awk -F"." '{print $(NF-1)"."$NF}' \
    <<< $gsl_find_domain`

gsl_find_domain=${gsl_find_domain,,}
gsl__check_domain "$gsl_find_domain"
}

#=======================================================================
# Check and set domain from DB
#=======================================================================
gsl__check_domain() {
gsl_this_conf_domain=`grep "$1" "$gsl_file_db_domains"`

! [[ "$gsl_this_conf_domain" ]] \
  && echo "! Domain Not found: $1" \
  && exit 1
  
gsl_dir_domain_tpl="$gsl_this_conf_domain/templates"
gsl_dir_domain_files="$gsl_this_conf_domain/files"
gsl_dir_domain_images="$gsl_this_conf_domain/images"

for gsl_new_dir in `set -o posix ; set \
                        | grep "gsl_dir_domain" \
                        | awk -F= '{print $2}'`
do
   if ! [[ -d "$gsl_new_dir" ]];then
      mkdir -p "$gsl_new_dir" 2>/dev/null && \
      gsl__logs_print \
         "$gsl_log_i" \
         "Folder" \
         "Init..." \
         "Created" \
         "$gsl_new_dir"
   fi
done
}

#-----------------------------------------------------------------------
# --------------
# Tools for Post
# --------------
#-----------------------------------------------------------------------

#=======================================================================
# Get Post Hash
#=======================================================================
gsl__post_hash_size() {
gsl_post_csum=`cksum "$gsl_post"`
gsl_post_hash=`awk '{print $1}' <<< "$gsl_post_csum"`
gsl_post_size=`awk '{print $2}' <<< "$gsl_post_csum"`
}

#=======================================================================
# Get line nbr from Post... $1: TERM | $2: File
#=======================================================================
gsl__get_line() {
awk -v s="$1" \
    'match($0,s) {print NR}' \
    "$2"
}

#=======================================================================
# Get everything after the marker... $1: marker | $2: File
#=======================================================================
gsl__get_header() {
awk -F"$1" -v marker="$1" -v l="$gsl_post_begin" \
    'NR < l && $0 ~ marker {print $2}' \
    "$2" 2>/dev/null
}

#=======================================================================
# Get line nbr from CONTENT Post... $1: TERM | $2: File
#=======================================================================
gsl__get_content_line() {
awk -v l="$gsl_post_begin" -v s="$1" \
    'NR >= l && $0 ~ s {print NR}' \
    "$2" || return
}

#=======================================================================
# Get CONTENT Post with markers... $1: Open Marker | $2: Close Marker
#=======================================================================
gsl__get_content_with_markers() {
gsl__get_content_finder \
    -o "$1" \
    -b "$gsl_post_header_field_1" \
    -c "$2" \
    -f "$gsl_post" \
  | tail -1 \
  || return
}

#=======================================================================
# Get CONTENT with marks | ! find from ONE line content
#=======================================================================
gsl__get_content_finder() {
# Get [OPTs]
while (( "$#" ))
  do
  case "$1" in
    -o) mk_o="$2" ;; # Open marker
    -c) mk_c="$2" ;; # Close Marker
    -b) mk_b="$2" ;; # Between markers
    -f) file="$2" ;; # In whole file
    -v) ivar="$2" ;; # In variable
    -n) line="n"  ;; # Give found line number
  esac
  shift
done

! [[ "$file" ]] && ! [[ "$ivar" ]] && return 1
! [[ "$mk_o" ]] && ! [[ "$mk_c" ]] && return 1
! [[ "$mk_b" ]] && mk_b='.*'

if [[ "$file" ]];then
  grep -oP$line "(?<=$mk_o)$mk_b?(?=$mk_c)" "$file" && return
elif [[ "$ivar" ]];then
  grep -oP$line "(?<=$mk_o)$mk_b?(?=$mk_c)" <<< "$ivar" && return
fi
}

#=======================================================================
# Get NEEDED HEADERS | $1 VAR CONTENT $2 LOG Proc $3 LOG Act
#=======================================================================
gsl__check_needed_headers() {
! [[ "$1" ]] \
  && gsl__logs_print \
       "$gsl_log_e" \
       "Post" \
       "Header $2" \
       "Missing: $3" \
       "${PWD}/$gsl_post" \
  && gsl_checker_err=true
}

#=======================================================================
# Get fields from variable... $1: field | $2: variable
#=======================================================================
gsl__get_header_field() {
awk -F" : " -v f="$1" \
    'NFS=f {print $NFS}' \
    <<< "$2"
}

#=======================================================================
# Get HEADER Fields + line nbr $1:marker
#=======================================================================
gsl__get_header_fields() {
gsl_post_hf_1=`gsl__get_header_field 1 "$gsl_header_content_line"`
gsl_post_hf_2=`gsl__get_header_field 2 "$gsl_header_content_line"`
gsl_post_hf_3=`gsl__get_header_field 3 "$gsl_header_content_line"`
gsl_post_hf_l=`gsl__get_line "$1$gsl_post_hf_1" "$gsl_post"`
}

#=======================================================================
# Check NEEDED Fields from HEADER
#=======================================================================
gsl__check_header_fields() {
if ! [[ "$gsl_post_hf_1" ]] || \
   ! [[ "$gsl_post_hf_2" ]];then

  gsl__logs_print \
    "$gsl_log_e" \
    "$1" \
    "$2" \
    "Line:$gsl_post_hf_l > $3" \
    "${PWD}/$gsl_post"
  gsl_checker_err=true
  return
fi
}

#=======================================================================
# Check OPTIONAL Field 3 from HEADER
#=======================================================================
gsl__check_header_field3() {
if ! [[ "$gsl_post_header_field_3" ]];then
  case "$3" in
  "$gsl_marker_image")
    gsl__logs_print \
      "$gsl_log_e" \
      "$1" \
      "$2" \
      "Line:$gsl_post_hf_l > No ALT TEXT !" \
      "${PWD}/$gsl_post"
    gsl_checker_err=true
    ;;
  *)
    gsl__logs_print \
      "$gsl_log_w" \
      "$1" \
      "$2" \
      "Line:$gsl_post_hf_l > No Alt Text ?" \
      "${PWD}/$gsl_post"
    gsl_checker_war=true
    ;;
  esac
fi
}