#!/bin/bash
# file: gsl__do_commons
# Folder: /var/lib/gsl/scripts
# By echolib (XMPP: im@echolib.re)
# License: GNU AFFERO GENERAL PUBLIC LICENSE Version 3, 19 November 2007


#======================================================================
# Set/Get NEEDED DATAS from META HEADERS
# $1: process
# $2: file: (gsl_tmp_head)
#======================================================================
get__needed_headers() {
gsl__logs_print -i -g \
  "Get" \
  "Needed Metas from header" \
  "$2"

read__line_with "^$gsl_marker_type" "$1" \
                "$gsl_marker_type" "meta" "$2"

read__line_with "^$gsl_marker_slug" "$1" \
                "$gsl_marker_slug" "meta" "$2"
  
read__line_with "^$gsl_marker_title" "$1" \
                "$gsl_marker_title" "meta" "$2"
  
read__line_with "^$gsl_marker_info" "$1" \
                "$gsl_marker_info" "meta" "$2"
  
read__line_with "^$gsl_marker_author" "$1" \
                "$gsl_marker_author" "meta" "$2"

read__line_with "^$gsl_marker_tags" "$1" \
                "$gsl_marker_tags" "meta" "$2"

read__line_with "^$gsl_marker_date" "$1" \
                "$gsl_marker_date" "meta" "$2"

read__line_with "^$gsl_marker_css" "$1" \
                "$gsl_marker_css" "meta" "$2"
}


#======================================================================
# Read line with
# $1: TERM
# $2: process
# $3: marker
# $4: type (meta/metas)
# $5: file
# From "meta" ; check only one marker ; get fields
# From "metas" ; check multiple markers ; get fields
# From content ; read line ; no need to get fields
#======================================================================
read__line_with() {
# meta must be set, and no more than one value
if [[ "$2" == "check" && "$4" == "meta" ]];then
  meta_nbr=`grep -n "$1" "$5" | wc -l`
  if (( $meta_nbr == 0 ));then
    if [[ "$3" == "$gsl_marker_css" ]];then
      gsl__logs_print -w -h \
        "$gsl_marker_css" \
        "Body template: css not customized" \
        "$PWD/$gsl_post"
      gsl_post_css=""
    
    else  
      gsl__logs_print -e -h \
        "$3" \
        "Unused needed marker" \
        "${PWD}/$gsl_post"
      return
    fi
  
  elif (( $meta_nbr > 1 ));then
    gsl__logs_print -e -h \
      "$3" \
      "Set only one marker ; Found $meta_nbr" \
      "${PWD}/$gsl_post"
    return
  fi
fi

# Read line filtered
while IFS=: read -r "ln" "gsl_line"
do

  # Get values if meta(s)
  case "$4" in
    meta|metas)
      header_f1=`awk -F" : " '{print $1}' <<<"$gsl_line"`
      header_f0=`awk -F": " '{print $1}' <<<"$header_f1"`
      header_f1=`awk -F": " '{print $2}' <<<"$header_f1"`
      header_f2=`awk -F" : " '{print $2}' <<<"$gsl_line"`
      header_f3=`awk -F" : " '{print $3}' <<<"$gsl_line"`
      ;;
  esac

  # From process, do
  case "$2" in
    check) check__headers_from_filter "$1" "$2" "$3" "$4" ;;
    make)  make__headers_from_filter "$1" "$3" "$5" "$6" "$7" "$8" ;;
  esac

done < <(grep -n "$1" "$5")
}