#!/bin/bash
# Name: Statique Littérateur
# Type: update manager
# file: manage__update
# 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: 227
# functions: 6
#-----------------------------------------------------------------------

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

#======================================================================
# --------------------
# Update app & scripts
# --------------------
#======================================================================
update__OPTIONS() {
# Get installed version number
cur_stl_version=`awk 'NR==2 {print $3}' "$stl_bin"`

case "$1" in
  version)  version__installed         ;;
  -u)       update__check              ;;
  -U)       stl_upg=true;update__check ;;
  update)   update__conf               ;;
esac
}


#======================================================================
# Show current version
#======================================================================
version__installed() {
echo "# STL installed: $cur_stl_version"
[[ -f "$stl_dir_help/last-version.md" ]] \
  && cat "$stl_dir_help/last-version.md"

exit
}


#======================================================================
# check if available update
# Also use for -U but then call upgrade__stl
#======================================================================
update__check() {
www_stl_version=`curl -s "$stl_repo" | awk 'NR==2 {print $3}'`

# Unknown fom repo
if ! [[ $www_stl_version ]];then
  echo "! Unknown available version from repo"
  exit
fi

# Same version fom repo
if [[ $cur_stl_version == $www_stl_version ]];then
  echo "# STL is up to date: $www_stl_version"
  exit
fi

  # Versions Comparison functions
  verlte() {
      [  "$1" = "`printf '%s\n%s' "$1" "$2" | sort -V | head -n1`" ]
  }
  
  verlt() {
      [ "$1" = "$2" ] && return 1 || verlte $1 $2
  }

# Should be only for me (Local version is upper)
verlt $cur_stl_version $www_stl_version \
  && stl_new_version=true \
  || stl_old_version=true

# New version Found
[[ $stl_new_version ]] \
  && printf '%s %s\n' \
            "# STL is available from repo:" \
            "$cur_stl_version > $www_stl_version"

# Installed version is newer than fom repo
[[ $stl_old_version ]] \
  && printf '%s %s\n' \
            "! STL Installed is newer than repo:" \
            "$cur_stl_version > $www_stl_version"

[[ $stl_new_version ]] || exit

if ! (( `curl -o /dev/null -s -w "%{http_code}\n" "$stl_repo_lv"` \
            >= 400 ));then
  
  mkdir -p /tmp/STL
  curl -L -o "/tmp/STL/last-version.md" "$stl_repo_lv" 2>/dev/null
  [[ -f "/tmp/STL/last-version.md" ]] \
    && cat "/tmp/STL/last-version.md" #\
    #&& rm -rf "/tmp/STL/"
fi

# Upgrade from -U (except for debian base)
[[ $stl_upg ]] || exit

# Debian based: exit and inform to use .deb
[[ `command -v apt` ]] \
  && echo "! System is Debian based. Use .deb instead" \
  && exit

echo
read -rp "- Do you want to update STL ? " stl_ask

case "$stl_ask" in
  Y|y) upgrade__stl ;;
  *)   echo "# Maybe later...";exit ;;
esac
}


#======================================================================
# Download archive to /tmp
# check it and extract with rsync
#======================================================================
upgrade__stl() {
mkdir -p /tmp/STL
stl_dir_tgz="/tmp/STl/stl_main" # directory from extracted archive

# Download archive
curl -L -o /tmp/STL/stl-main.tar.gz "$stl_repo_tgz" 2>/dev/null
! [[ -f "/tmp/STL/stl-main.tar.gz" ]] \
  && echo "! Download error from url: $repo_tar" \
  && exit

# Extract archive
tar -xzf "/tmp/STL/stl-main.tar.gz" --directory "/tmp/STL/"
! [[ -d $stl_dir_tgz ]] \
  && echo "! Extract error from archive: /tmp/STL/stl-main.tar.gz" \
  && return
  
# Rsync from archive to System
rsync -a --exclude ".*" \
      "/tmp/STL/stl_main/usr/" \
      "/usr/" && \
printf '%s\n%s\n' \
       "- Copy bin: /usr/local/bin/stl" \
       "- Copy completion: /usr/share/bash-completion/completions/stl"

rsync -a --exclude ".*" \
      "/tmp/STL/stl_main/etc/stl/" \
      "/etc/stl/" && \
echo  "- Copy configuration: /etc/stl/"

rsync -a --delete --exclude ".*" \
      "/tmp/STL/stl_main/var/lib/stl/help/" \
      "/var/lib/stl/help/" && \
echo  "- Copy helps: /var/lib/stl/help/"

rsync -a --delete --exclude ".*" \
      "/tmp/STL/stl_main/var/lib/stl/scripts/" \
      "/var/lib/stl/scripts/" && \
echo  "- Copy scripts: /var/lib/stl/scripts/"

# Cleaning
rm -rf "/tmp/STL/"
}


#======================================================================
# Checking and updating conf after STL update
#======================================================================
update__conf() {
domain__get
echo "# Configuration:"

# Sidebar
if [[ "$domain_dir_sidebar" && "$domain_file_sidebar_load" ]];then
  echo "  - Sidebar Ok"

else
cat << EOCONF >> "$stl_file_pwd_conf"

# Sidebar
domain_dir_sidebar="$PWD/articles/sidebar"
domain_file_sidebar_load="$PWD/articles/sidebar/stl.sidebar"
EOCONF
echo "  - Sidebar configured"
fi

# Logs
echo
stl log clean all

# Create a backup of the config in db
rsync -a "$PWD/$stl_file_pwd_conf" \
         "$stl_dir_db/$domain_name/$stl_file_pwd_conf.bkp"

# Re check all checked article to wirte DB
echo -e "\n# Database:"
update__database # Last process with exit
}


#======================================================================
# Force check all checked articles
#======================================================================
update__database() {
for db_check in $domain_db_articles/*.db
do
  source "$db_check"
  uri_dba="$article_uri_srv"
  uri_dba=${uri_dba:1}
  uri_dba=${uri_dba/.html/.stl}
  
  if [[ $check_all ]];then
    stl check -F "$uri_dba"
    echo
  
  else
    stl check -F "$uri_dba" &>/dev/null
    echo "  - $uri_dba updated"
  fi
done
exit
}