#!/bin/bash

# Gets the latest cores and checks all the directories
# in the current for any changes to the cores.
# The directories MUST match the ones in the mist-binaries/cores so just create
# the directories of the cores you want.

#Define this if using Mistica for specific cores
#MISTICA=Y

LOGFILE=update_cores.log

date >$LOGFILE
echo >>$LOGFILE

BASEDIR=_temp
SRCDIR=${BASEDIR}/git/mist-binaries/cores

# clone git repo if it doesn't exist
if [[ ! -d $SRCDIR ]]; then
  mkdir -p ${BASEDIR}/git
  (cd ${BASEDIR}/git; git clone https://github.com/mist-devel/mist-binaries.git)
  #Set timestamps on git files to match repository commit dates
  (cd $SRCDIR; git ls-files | sed "s/'/\\\'/g" | xargs -I{} bash -c 'touch "{}" --date=@$(git log -n1 --pretty=format:%ct -- "{}")')
fi

echo $SRCDIR

# Update the cores from github
(cd $SRCDIR; git pull)

#Check for firmware updates
SRC=`ls -Lt "${SRCDIR}"/../firmware/*.upg 2>/dev/null | head -1`
DST=_firmware/`basename "$SRC"`
mkdir -p _firmware
if [[ ! -f $DST ]]; then
  cp -p "$SRC" "$DST"
  echo ==================
  echo FIRMWARE UPDATED!!! $DST | tee -a $LOGFILE
  echo ==================
  echo 
fi

echo

#Check all the cores in git with current matching directories 
for FILE in `find . -maxdepth 1 -type d | egrep -v '_temp'`
do

  DIR=${FILE:2}

  DST="${DIR}/core.rbf"
  if [[ $DIR = "spectrum" ]];then
    DST="${DIR}/zxspectrum.rbf"
  fi

  SRC=`ls -Lt ${SRCDIR}/$DIR/*.rbf 2>/dev/null | head -1`

  # Mistica currently has core specific SNES
  if [[ $DIR = "snes" && ! -z "$MISTICA" ]]; then
    SRC=`ls -Lt ${SRCDIR}/$DIR/snes_mist_*.rbf 2>/dev/null | head -1`
    if [[ ! -z "$MISTICA" ]]; then
      SRC=`ls -Lt ${SRCDIR}/$DIR/snes_mistica*.rbf 2>/dev/null | head -1`
    fi
  fi

  if [[ $DIR = "plus_too" ]]; then
    SRC=`ls -Lt ${SRCDIR}/$DIR/plusToo_*.rbf 2>/dev/null | head -1`
  fi
  if [[ $DIR = "zxn" ]]; then
    SRC=`ls -Lt ${SRCDIR}/$DIR/ZXN_*.rbf 2>/dev/null | head -1`
  fi

  if [[ -z $SRC || -z $DST ]]; then
    continue
  fi 

  if [[ -f $SRC && ! -f $DST ]]; then
    cp -p "$SRC" "$DST"
    echo Update CORE $DST | tee -a $LOGFILE
  else
    if [[ $SRC -nt $DST ]]; then
      cp -p "$SRC" "$DST"
      echo Update CORE $DST | tee -a $LOGFILE
      echo
    else
      #Check checksum
      MD5SRC=`md5sum "$SRC" | awk '{print $1}'`
      MD5DST=`md5sum "$DST" | awk '{print $1}'`
  
      if [[ $MD5SRC != $MD5DST ]]; then
        cp -p "$SRC" "$DST"
        echo Update CORE $DST | tee -a $LOGFILE
        echo
      fi
    fi
  fi

  #Copy special ROMS
  [[ $DIR = "atari800" ]] && cp -pvu ${SRCDIR}/${DIR}/*.ROM ${DIR}/
  [[ $DIR = "bbc" ]] && cp -pvu ${SRCDIR}/${DIR}/bbc.rom ${DIR}/
  [[ $DIR = "c16" ]] && cp -pvu ${SRCDIR}/${DIR}/c16.rom ${DIR}/
  [[ $DIR = "fpga64" ]] && cp -pvu ${SRCDIR}/${DIR}/*.rom ${SRCDIR}/${DIR}/C64GS.ARC ${DIR}/ 
  [[ $DIR = "ht1080z" ]] && cp -pvu ${SRCDIR}/${DIR}/HT1080Z.ROM ${DIR}/
  [[ $DIR = "ql" ]] && cp -pvu ${SRCDIR}/${DIR}/ql.rom ${DIR}/
  [[ $DIR = "samcoupe" ]] && cp -pvu ${SRCDIR}/${DIR}/samcoupe.rom ${DIR}/
  [[ $DIR = "spectrum" ]] && cp -pvu ${SRCDIR}/${DIR}/spectrum.rom ${DIR}/
  [[ $DIR = "ti994a" ]] && cp -pvu ${SRCDIR}/${DIR}/TI994A.ROM ${DIR}/
  [[ $DIR = "vic20" ]] && cp -pvu ${SRCDIR}/${DIR}/vic20.rom ${DIR}/

  #Move ZXN to spectrum
  [[ $DIR = "zxn" ]] && cp -pvu zxn/core.rbf spectrum/

done