#!/bin/bash
# @author 6543
# @version 0.1
# @date 2019-02-07

## Options/Parameter
# $1:
# -a    	| add files of md5-file to db
# -r		| remove files of md5-file from db
# -d		| mark files from md5-file ad deleted
# -ee		| export md5 of existing files
# -ed		| export md5 of deleted fiels
#
# $2: <paht of md5-file>
# [$3]: <path to movie folder>

{ #set enviroemnt
  true=1      #like <stdbool.h>
  false=0     #like <stdbool.h>
}

mode=$(echo $1 | tr -d '-')
md5="$2"
moviedir="$3"
globalconf="/etc/tt/global"

#db
dbname="tt_test"
dbhost="localhost"
dbuser="root"
dbpwd=""

function help() {
  #help menue
  echo "$0 is part of the TerabyteTerminator Project"
  echo ""
  echo "import-md5-list <mode> <md5-file> [moviedir]"
  echo "  modes:"
  echo "    -a		add files of md5-file to db"
  echo "    -r		remove files of md5-file from db"
  echo " 	-d		mark files from md5-file ad deleted"
  echo "    -ee		export md5 of existing files"
  echo " 	-ed		export md5 of deleted fiels"
  echo ""
  echo "  moviedir: Is optional if it is already in the global config"

  exit 0
}
if [ "$mode" == "help" ] && help

##check & prepair args
[ -f "$md5" ] || { echo "md5 \"$md5\" do not exist"; exit 1; }	# check md5
[ -z "$moviedir" ] && [ -f "$globalconf" ] && {					# if (no argument) and (globalconf exist)
  if [ -z "$(grep "moviedir=" "$globalconf" )" ]; then			# and (moviedir is NOT in globalconf)
    echo 'neither "movie folder" is set in global config nor given as argument'
    exit 2
  else															# and (moviedir is in globalconf)
    moviedir="$(grep "moviedir=" "$globalconf" | cut -d '=' -f 2)"
  fi
}
[ -d "$moviedir" ] || { echo "moviedir \"$moviedir\" do not exist"; exit 3; } # check moviedir

## functions
function md5_in_add() {

  cat data_shares_Filme | while read line; do
    md5=$(echo $line | cut -c -32)
    path=$(echo $line | cut -c 33- | sed 's/^\ //g')
    relrevpath=$(echo $path | sed "s|$moviedir||g" | sed 's|^/||g' | sed 's|/$||g' | rev)
    name=$(echo $relrevpath | cut -d '/' -f 1 | rev)
    folder=$(echo $relrevpath | cut -d '/' -f 2- | rev)
    db_query "INSERT INTO File (MD5, Folder, Name) VALUES ('$md5', '$folder', '$name' );"   #-> handle in future: ";'()"
  done

  exit 0
}

function md5_rm() {
  exit 0
}

function md5_in_del() {
  exit 0
}

function md5_out_exist() {
  exit 0
}

function md5_out_del() {
  exit 0
}

# help functions

# db_query <query> -> result
function db_query() {
  local args="-sN"  #no headers, no grid
  args+=" -h$dbhost"
  args+=" -u$dbuser"
  [ -n "$dbpwd" ] && args+=" -p$dbpwd"
  args+=" $dbname"
  echo $@ | mysql $args
}

# db_exist_md5 <md5> -> true/false  0/1
function db_exist_md5() {
  result=($(db_query "SELECT COUNT(md5) FROM File WHERE File.MD5 LIKE '$1';"))
  if [ "${result[2]}" -gt "0" ]; then
    echo true
    return $true
  else
    echo false
    return $false
  fi
}

case "$mode" in
  "a")	#in_add
    md5_in_add
    ;;
  "r")	#rm
    md5_rm
    ;;
  "d")
    md5_in_del
    ;;
  "ee" | "e" )
    md5_out_exist
    ;;
  "ed" )
    md5_out_exist
    ;;
  *)
    echo "wrong arguments"
    echo ""
    help
    ;;
esac