#!/bin/bash
echo "Sync Backup!";
if [ $# -eq 0 ]; then
    echo "Usage: sync-btime.sh [o/n/i] <Backup disk name> <Sync target disk root path> [Sync source disk root path]";
    echo "o : Replace if source older"
    echo "n : Replace if source newer"
    echo "i : Ignore backup times"
    exit 2;
fi
ssrc="";
if [ -z $4 ]; then
  ssrc="/mnt";
else
  ssrc="$4";
fi
echo "Source Backup disk name: $2";
echo "Sync target disk root path: $3";
echo "Sync source disk root path: $ssrc";
if [[ "$1" == "o" ]]; then
  echo "Target will be replaced if source older.";
elif [[ "$1" == "n" ]]; then
  echo "Target will be replaced if source newer.";
else
  echo "Target will be replaced if different."
fi
if [[ "$5" != "ikwid" ]]; then
  echo "Press Enter to Start...";
  read;
fi
mkdir -p /tmp/a;
echo "Syncing...";
cmp -s "$ssrc/hsums/$2-tbl.hash" "$3/hsums/$2-tbl.hash"
sTbl=$?;
cmp -s "$ssrc/hsums/$2-gz.hash" "$3/hsums/$2-gz.hash";
sPart=$?;
if [ $sPart -eq 0 ]; then
  cmp -s "$ssrc/hsums/$2.hash" "$3/hsums/$2.hash";
  sPart=$?;
fi
if [ $sTbl -ne 0 ] || [ $sPart -ne 0 ]; then
  if [[ "$1" == "o" ]]; then
    ./btime.sh "$2" "$3" "$4" "ikwid";
    sComp=$?;
    if [ $? -ne 1 ]; then
      sPart=0;
      sTbl=0;
    fi
  elif [[ "$1" == "n" ]]; then
    ./btime.sh "$2" "$3" "$4" "ikwid";
    sComp=$?;
    if [ $? -ne 2 ]; then
      sPart=0;
      sTbl=0;
    fi
  fi
fi
sO=0;
if [ $sTbl -ne 0 ]; then
  echo "Syncing: $2.tbl";
  cp -f "$ssrc/tabls/$2.tbl" "$3/tabls/$2.tbl";
  cp -f "$ssrc/hsums/$2-tbl.hash" "$3/hsums/$2-tbl.hash";
  sO=1;
fi
if [ $sPart -ne 0 ]; then
  echo "Syncing: $2.part.gz";
  cp -f "$ssrc/hsums/$2-gz.hash" "$3/hsums/$2-gz.hash";
  cp -f "$ssrc/hsums/$2.hash" "$3/hsums/$2.hash";
  cp -f "$ssrc/parts/$2.part.gz" "$3/parts/$2.part.gz";
  sO=1;
fi
hT=0;
if [ $sO -eq 1 ] && [ -f "$ssrc/times/$2.time" ]; then
  echo "Syncing: $2.time";
  cp -f "$ssrc/hsums/$2-time.hash" "$3/hsums/$2-time.hash";
  cp -f "$ssrc/times/$2.time" "$3/times/$2.time";
  hT=1;
fi
echo "Verifying...";
if [ $sTbl -ne 0 ]; then
  echo "Verifying: $2.tbl";
  cmp -s "$ssrc/hsums/$2-tbl.hash" "$3/hsums/$2-tbl.hash";
  if [ $? -ne 0 ]; then
      echo "Hash mismatch with $2-tbl.hash !";
      exit 1;
  fi
  (sha512sum "$3/tabls/$2.tbl" > "/tmp/a/$2.tbl.sum") && dd "if=/tmp/a/$2.tbl.sum" bs=128 count=1 "of=/tmp/a/$2-tbl.hash";
  cmp -s "/tmp/a/$2-tbl.hash" "$3/hsums/$2-tbl.hash";
  if [ $? -ne 0 ]; then
      echo "Hash mismatch with $2.tbl !";
      exit 1;
  fi
fi
if [ $sPart -ne 0 ]; then
  echo "Verifying: $2.part.gz";
  cmp -s "$ssrc/hsums/$2-gz.hash" "$3/hsums/$2-gz.hash";
  if [ $? -ne 0 ]; then
      echo "Hash mismatch with $2-gz.hash !";
      exit 1;
  fi
  cmp -s "$ssrc/hsums/$2.hash" "$3/hsums/$2.hash";
  if [ $? -ne 0 ]; then
      echo "Hash mismatch with $2.hash !";
      exit 1;
  fi
  (sha512sum "$3/parts/$2.part.gz" > "/tmp/a/$2.part.gz.sum") && dd "if=/tmp/a/$2.part.gz.sum" bs=128 count=1 "of=/tmp/a/$2-gz.hash";
  cmp -s "/tmp/a/$2-gz.hash" "$3/hsums/$2-gz.hash";
  if [ $? -ne 0 ]; then
      echo "Hash mismatch with $2.part.gz !";
      exit 1;
  fi
fi
if [ $hT -eq 1 ]; then
  echo "Verifying: $2.time";
  cmp -s "$ssrc/hsums/$2-time.hash" "$3/hsums/$2-time.hash";
  if [ $? -ne 0 ]; then
      echo "Byte mismatch with $2-time.hash !";
      exit 1;
  fi
  cmp -s "$ssrc/times/$2.time" "$3/times/$2.time";
  if [ $? -ne 0 ]; then
      echo "Byte mismatch with $2.time !";
      exit 1;
  fi
fi
rm -rf /tmp/a;
echo "Finished!";
exit 0;