#!/bin/bash
# ************************************************************
# AltEPG Project Source Code Version Control
# $FileID: git::build/installTivo.bash $
# $Revision: altepg1.0c root 2011-09-17 23:39:32 +0100 Finalising altepg1.0c $
# Description: AltEPG Installer
# ************************************************************

# install script expects to find the software to be installed in the current directory

#

mode=$1
if [ -n "$mode" ]; then
  if [ "$mode" = "build" ]; then
    GIT_ROOT="../.."
    INSTALL_ROOT="."
  else
    echo "Unrecognised mode : $mode"
    exit 1
  fi
fi

SYSTEM=$(uname -r)
SYSNAME=$(uname -n)
if [ -z "${SYSTEM##*TiVo*}" ]; then
  SYS=TIVO
  LOGFILE="/var/log/install.log"
  MOUNT="mount"
  TIVO_ROOT=""
  HACKDIR=/var/hack
elif [ "$SYSNAME" = "Knoppix" ]; then
  SYS=BUILD
  LOGFILE="install.log"
  MOUNT=":"
  TIVO_ROOT="/mnt/tivoRoot"
  HACKDIR=$TIVO_ROOT/hack
  mkdir -p "$TIVO_ROOT"
else
  SYS=OTHER
  LOGFILE="install.log"
  MOUNT=":"
  TIVO_ROOT="/tmp/tivoRoot"
  HACKDIR=$TIVO_ROOT/hack
  mkdir -p "$TIVO_ROOT"
fi

putlog()
{
  if [ -n "${1##DEBUG:*}" -o "$DEBUG" = 1 ]; then
    echo "$(date +%Y-%m-%d:%H:%M:%S): $1" >>"$LOGFILE"
    echo "$(date +%Y-%m-%d:%H:%M:%S): $1"
  fi
}

installFiles()
{
  if [ "$mode" = "build" ]; then
    while read line; do
      operation="${line%%	*}"
      if [ "$operation" != "D" ]; then
        file="${line##*	}"
        source="$GIT_ROOT/$file"
        target="$INSTALL_ROOT/$file"
        putlog "Copying '$source' to '$target'"
        basedir=$(dirname "$target")
        mkdir -p "$basedir"
        cp -v "$source" "$target"
      fi
    done
    return
  fi
  ecount=0
  $MOUNT -o remount,rw /
  displaceDir="$TIVO_ROOT/var/tmp/displacedFiles"
  mkdir -p "$displaceDir"
  while read line; do
    operation="${line%%	*}"
    file="${line##*	}"
    if [ -z "${line##*	*}" ]; then
      putlog "DEBUG: LINE=$line, op=$operation file=$file"
    fi
    partition="${file%%/*}"
    if [ "$partition" = "root" ]; then
      pathname="$TIVO_ROOT/${file#*/}"
    else
      pathname="$TIVO_ROOT/$partition/${file#*/}"
    fi
    if [ "$operation" = "A" -o "$operation" = "M" ]; then
      if [ "$operation" = "A" ]; then
        putlog "INFO: Installing new file $file to partition $partition as $pathname"
      else
        putlog "INFO: Installing new version of file $file to partition $partition as $pathname"
      fi
      if [ ! -f "$file" ]; then
        putlog "ERROR: $file not present in installation kit"
        error=1
      else
        if [ -f "$pathname" ]; then
	  if [ "$operation" = "A" ]; then
            putlog "WARNING: $pathname already exists, moving to $displaceDir"
	  else
	    putlog "INFO: $pathname found, moving old version to $displaceDir"
	  fi
          cp -p "$pathname" "$displaceDir"
          rm -f "$pathname"
	elif [ "$operation" = "M" ]; then
	  putlog "WARNING: $pathname not found in existing system"
	fi
	dir=${pathname%/*}
	putlog "DEBUG: target dir=$dir; copying $file to $pathname"
	if [ ! -d "$dir" ]; then
	  mkdir -p "$dir"
	fi
        cp -p "$file" "$pathname"
	if [ -f "$pathname" ]; then
	  putlog "INFO: $pathname installed"
	else
	  putlog "ERROR: $pathname not installed"
          error=1
	fi
      fi
    elif [ "$operation" = "D" ]; then
      putlog "INFO: Deleting $pathname"
      if [ -f "$pathname" ]; then
        putlog "INFO: $pathname found, moving old version to $displaceDir"
        cp -p "$pathname" "$displaceDir"
        rm -f "$pathname"
        if [ ! -f "$pathname" ]; then
          putlog "INFO: $pathname deleted"
        else
          putlog "ERROR: $pathname deletion failed"
          error=1
        fi
      else
        putlog "WARNING: $pathname not found"
      fi
    elif [ "$operation" = "E" ]; then
      if [ "$SYS" = "TIVO" ]; then
        putlog "INFO: Executing $file"
        chmod 755 ./$file
        ./$file
        if [ $? != 0 ]; then
          putlog "ERROR: Failed to execute $file (error=$?)"
	  error=1
        fi
      else
        ecount=$[ecount+1]
	eprefix=$[ecount+100]
        base="$[ecount+100]_$(basename '$file')"
	phasenum=2
	pathname="$TIVO_ROOT/var/persist/$base.phase$phasenum"
        putlog "INFO: Copying $file to $pathname for execution on tivo boot"
	cp -p "$file" "$pathname"
	if [ -f "$pathname" ]; then
	  putlog "INFO: $pathname installed"
	else
	  putlog "ERROR: $pathname not installed"
          error=1
	fi
      fi
    elif [ "$operation" = "H" ]; then
      if [ ! -f "$file" ]; then
        putlog "ERROR: $file not present in installation kit"
        error=1
      elif [ -z "${file##*.tgz}" ]; then
        putlog "INFO: Installing package $file to $HACKDIR"
        gzip -df "$file"
	tarfile=${file%%.tgz}.tar
        here=$PWD
	cd "$HACKDIR"
	if [ "$SYS" = "BUILD" ]; then
	  tar xvf "$here/$tarfile"
	else
      	  cpio --unconditional --format=tar -i <"$here/$tarfile" 2>/dev/null
	fi
	cd "$here"
      else
        putlog "ERROR: Don't know how to install $file (file type isn't .tgz)"
      fi
    elif [ -z "${operation##\#*}" ]; then
      : # ignore comment lines
    else
      putlog "ERROR: Unrecognised operation '$operation', ignored"
      error=1
    fi
  done
  $MOUNT -o remount,ro /
}

error=0
installFiles <fileList.txt

exit $error