#!/bin/bash
# Name: Statique Littérateur
# Type: Article manager
# file: manage__articles
# Folder: /var/lib/stl/scripts/
# By echolib (XMPP: im@echolib.re)
# License: GNU AFFERO GENERAL PUBLIC LICENSE Version 3, 19 November 2007

#------------
# funny stats
#------------
# lines: 258
# functions: 8
#-----------------------------------------------------------------------

#**********************************************************************

#======================================================================
# Argument remove
# Remove article in wip/, www/ if wip, publish
# $1: remove
# $2: argument
#======================================================================
remove__OPTIONS() {
case "$2" in
  wip) wip_remove=true;srv="WIP"           ;;
  www) www_remove=true;srv="WWW"           ;;
  *)   noarg "$2" "Use: wip,www (ARTICLE)" ;;
esac

case "$3" in
  *".stl") article__hash "$3"              ;;
  *)       noarg "$3" "Use: (ARTICLE).stl" ;;
esac

if__article_db "$article_db"
if ! [[ $db_exists ]];then
      echo "! $this_article must be checked first"
      exit
fi

# Checking wip status
if [[ $wip_remove ]];then
  ! [[ $article_wip_hash ]] \
    && echo "! $3 is not in wip/ server" \
    && exit

  dir_target="$domain_dir_wip"

# Checking www status
elif [[ $www_remove ]];then
  [[ $stl_server == "server" ]] \
    && echo "! STL install: $stl_install. Unuse www/" \
    && exit

  ! [[ $article_www_hash ]] \
    && echo "! Article '$3' is not in www/ server" \
    && exit

  dir_target="$domain_dir_www"
fi

# Remove .html, .stl from server
remove__this_file "$dir_target$article_uri_srv"
remove__this_file "$dir_target$article_uri_src"

# in manage__publish: remove included files used by article
get__article_files_included

# Remove empty directories
find "$dir_target" -type d -empty -delete

# Remove www hash to DB
db__srv_status_hash "$srv" Unset
}


#======================================================================
# Remove this file
# $1: file
#======================================================================
remove__this_file() {
if [[ -f "$1" ]];then
  rm -f "$1"
  this_article="$1"
  log__add -w "$srv" -rm \
              "file from server"
fi
}


#======================================================================
# Argument read
# $1: read
# $2: argument
#======================================================================
read__OPTIONS() {
! [[ "$2" ]] \
  && noarg "Cannot be empty"

sl="-n"
case "$2" in
  *".stl") article__hash "$2"                                  ;;
  conf)    domain__get;uri_article="$stl_file_pwd_conf"        ;;
  sidebar) domain__get;uri_article="$domain_file_sidebar_load" ;;
  license) uri_article="$stl_dir_help/LICENSE";unset sl        ;;
  *)       noarg "$2"                                          ;;
esac

if__file "$uri_article" read
if [[ $uri_article == "$stl_dir_help/LICENSE" ]];then
  echo && stl license
fi
exit
}


#======================================================================
# Argument edit
# $1: edit
# $2: argument
#======================================================================
edit__OPTIONS() {
! [[ "$2" ]] \
  && noarg "Cannot be empty"

domain__get
case "$2" in
  *".stl") article__hash "$2"                      ;;
  conf)    uri_article="$domain_conf"              ;;
  sidebar) uri_article="$domain_file_sidebar_load" ;;
  *)       noarg "$2"                              ;;
esac

nano --linenumbers "$uri_article"
exit
}


#======================================================================
# Split article in 2 files : metas + content
# Get begining article content line
# $1: article > $uri_article
#======================================================================
split_article() {
article_tmp_head=`mktemp` # Metas
article_tmp_post=`mktemp` # Content

article_begin=`
grep -n "^-----" "$1" \
   | head -n 1 \
   | awk -F: '{print $1}'`

if ! [[ $article_begin ]];then
  log__add -e -C -A \
           "No separator before content: use '-----'"
  return
fi

# Create file with metas only
awk -v end="$article_begin" \
    'NR >=1 && NR < end-1 {print}' \
    "$1" \
  > "$article_tmp_head"

((article_begin++))

# Create file with content only
awk -v end="$article_begin" \
    'NR >= end {print}' \
    "$1" \
  > "$article_tmp_post"
}


#======================================================================
# Get article line for article_tmp_post. Count from begin - 1
#======================================================================
article__line() {
ln=$(( ln + article_begin - 1 ))  
}


#======================================================================
# Get article hash + article_db ID from uri
# $1: file *.stl from argument 
#======================================================================
article__hash() {
domain__get
this_article="$1"
this_article_bkp="$1"
uri_article="$domain_dir_articles/$1"
if__file "$uri_article"

# Get Hash, Size, Uri
while read -r "H" "S" "U"
do
  article_hash="$H"
  article_size="$S"
  article_id=`echo "$U" | cksum | awk '{print $1}'`
  article_db="$article_id.db"
  article_log="$article_id.log"
done < <(cksum "$uri_article")

if [[ $article_size -lt 10 ]];then
  echo "! This article is nearly empty..."
  exit

elif [[ $article_size -lt 60 ]];then
  echo "! This article is too small to be checked"
  exit
fi
}


#======================================================================
# Get values from OPTIONAL metas
# $1: marker
# $2: from split mktemp > $article_tmp_head
# $3: check | make
# $4: $article_tmp_post
#======================================================================
get__content_metas() {
unset meta

while IFS=: read -r "ln" "content"
do
  meta=true
  header_f0=`awk -F"$1"  '{print $2}' <<<"$content"`
  header_f1=`awk -F" : " '{print $1}' <<<"$header_f0"`
  header_f2=`awk -F" : " '{print $2}' <<<"$header_f0"`
  header_f3=`awk -F" : " '{print $3}' <<<"$header_f0"`
  
  case "$3" in
    check)
      case "$1" in
        "^link: ")    check__link ;;
        "^image: ")   check__image ;;
        "^code: ")    check__precode ;;
        "^brut: ")    check__brut ;;
        "^abbr: ")    check__abbr ;;
        "^file: ")    check__link_file ;;
      esac
      ;;
  
    make)
      case "$1" in
        "^abbr: ")    make__abbrs      "$4" ;;
        "^link: ")    make__links      "$4" ;;
        "^file: ")    make__links_file "$4" ;;
        "^image: ")   make__images     "$4" ;;
        "^code: ")    make__precode    "$4" ;;
        "^brut: ")    make__brut       "$4" ;;
      esac
      ;;
  esac
done < <(grep -n "$1" "$2" )
}