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


#======================================================================
# Get arguments from COMMAND (log)
# $2: arguments list
#======================================================================
log__OPTIONS() {
while test "$2"
do
  case "$2" in
    clean|-C)
      shift
      if [[ "$2" == "all" ]];then
        rm -f "$gsl_dir_logs/"*".gsl.log"
        echo "! Clean all saved logs"
        exit
      fi
      
      [[ -z `grep '[^[:space:]]' "$gsl_file_logs" 2>/dev/null` ]] \
        && echo "# No logs to show. File is empty." \
        && exit
      
      gsl_date_logs=`date +%F-%H-%M-%S`
      mv "$gsl_file_logs" "$gsl_dir_logs/$gsl_date_logs.gsl.log"
      rm -f "$gsl_file_logs"
      printf '%s %s %s\n' \
             "# Logs saved to" \
             "$gsl_dir_logs/$gsl_date_logs.gsl.log" \
             "and cleaned"
      exit
      ;;

    *)
      [[ -z `grep '[^[:space:]]' "$gsl_file_logs" 2>/dev/null` ]] \
        && echo "# No logs to show. File is empty." \
        && exit
      
      case "$2" in
        -s) gsl_logs_last_session=true ;;
        -e) gsl_logs_err=true ;;
        -i) gsl_logs_inf=true ;;
        -w) gsl_logs_war=true ;;
        *)  gsl_logs_search="$2" ;;
      esac
      ;;
  esac
  shift
done

gsl__logs_show
exit
}


#======================================================================
# Print in log starting process
# $1; process
#======================================================================
log__process_begin() {
gsl__logs_print -i -B -P \
  "$1" \
  "$PWD"
}


#======================================================================
# Print in log ending process
# $1; oricess
#======================================================================
log__process_end() {
gsl__logs_print -i -E -P \
  "$1" \
  "$PWD"
}

#----------------------------------------------------------------------
# Print in log file
#----------------------------------------------------------------------
gsl__logs_print() {
#1: Level
#2: Type
#3: Process
#4: Infos
#5: File

case "$1" in
  -i) log_f1="$gsl_log_i";CL=${NC} ;;
  -w) log_f1="$gsl_log_w";CL=${CY};gsl_checker_war=true ;;
  -e) log_f1="$gsl_log_e";CL=${CR};gsl_checker_err=true ;;
  *)  log_f1="$1";;
esac

case "$2" in
  -h)   log_f2="Header" ;;
  -c)   log_f2="Content" ;;
  -g)   log_f2="GSL" ;;
  -B)   log_f2="Starting" ;;
  -E)   log_f2="Stopping" ;;
  -A)   log_f2="Article" ;;
  -srv)   log_f2="Server" ;;
  -st)  log_f2="Stats" ;;
  -R)   log_f2="Removed" ;;
  -D)   log_f2="Database" ;;
  -sdb) log_f2="Sidebar" ;;
  *)    log_f2="$2" ;;
esac

case "$3" in
  -c)   log_f3="Created" ;;
  -f)   log_f3="file" ;;
  -e)   log_f3="Edit" ;;
  -h)   log_f3="Hash" ;;
  -C)   log_f3="Check" ;;
  -M)   log_f3="Make" ;;
  -P)   log_f3="Process" ;;
  -wip) log_f3="wip" ;;
  -www) log_f3="www" ;;
  -src) log_f3="Source" ;;
  -sk)  log_f3="Skip" ;;
  -inv) log_f3="Invalid" ;;
  *)    log_f3="$3" ;;
esac

printf   '%b%s %s %-7s\t%-7s\t%-38s\t%s\t%s\t%s%b\n' \
         "${CL}" \
         "`date +%F' '%T`" \
         "$log_f1" \
         "$log_f2" \
         "$log_f3" \
         "$4" \
         "$gsl_post" \
         "$domain_name" \
         "$5" \
         "${NC}" \
      >> "$gsl_file_logs"
}

#-----------------------------------------------------------------------
# Show logs from file with filters
#-----------------------------------------------------------------------
gsl__logs_show() {

# Choices are important, but let's give priority
[[ "$gsl_logs_inf" ]] \
   && gsl_logs_filter="$gsl_log_i"
[[ "$gsl_logs_war" ]] \
   && gsl_logs_filter="$gsl_log_w"
[[ "$gsl_logs_err" ]] \
   && gsl_logs_filter="$gsl_log_e"

# Last session show or not
if [[ "$gsl_logs_last_session" ]];then
   gsl_log_start_line=`
   grep -n "Starting" "$gsl_file_logs" \
      | tail -1 \
      | awk -F: '{print $1}'`

   awk -v sl="$gsl_log_start_line" \
       'NR >= sl' \
       "$gsl_file_logs" \
      | grep "$gsl_logs_filter" \
      | grep -Ei "$gsl_logs_search" \
      | column -t -s$'\t' -o'  '

else
  while read -r "gsl_log_content"
  do
    # Let's read clear sessions
    [[ "$gsl_log_content" =~ "Starting" ]] \
       && echo
       
    echo "$gsl_log_content"
  done < <(cat "$gsl_file_logs" \
             | grep "$gsl_logs_filter" \
             | grep -Ei "$gsl_logs_search" \
             | column -t -s$'\t' -o'  ')
fi
}