#! /usr/bin/env bash
# Copyright 2012 Adam Green (http://mbed.org/users/AdamGreen/)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


# Logs the command to be run and then executes the command while logging the results.
RunAndLog () {
    echo `date` Executing "$@">>"$LOGFILE"
    "$@" 1>>"$LOGFILE" 2>"$ERRORFILE"
    if [ "$?" != "0" ] ; then
        cat "$ERRORFILE" >>"$LOGFILE"
        echo `date` Failure forced early exit>>"$LOGFILE"
        cat "$LOGFILE"
        rm -f "$ERRORFILE"
        popd >/dev/null
        read -n 1 -sp "Press any key to continue..." dummy ; echo
        exit 1
    fi
}


# Setup script variables.
ROOTDIR=$0
ROOTDIR=${ROOTDIR%/*}
pushd $ROOTDIR
ROOTDIR=$PWD
LOGFILE="$ROOTDIR"/mac_install.log
ERRORFILE="$ROOTDIR"/mac_install.err
GCC4ARM_VERSION=gcc-arm-none-eabi-4_8-2014q1
GCC4ARM_FILENAME=gcc-arm-none-eabi-4_8-2014q1-20140314-mac.tar.bz2
GCC4ARM_URL=https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q1-update/+download/$GCC4ARM_FILENAME
GCC4ARM_TAR="$ROOTDIR"/$GCC4ARM_FILENAME
GCC4ARM_MD5=5d34d95a53ba545f1585b9136cbb6805
GCC4ARM_EXTRACT="$ROOTDIR"/$GCC4ARM_VERSION
GCC4ARM_DIR="$ROOTDIR"/gcc-arm-none-eabi
GCC4ARM_BINDIR=$GCC4ARM_DIR/bin
MACBIN_DIR="$ROOTDIR"/build/osx64
BUILDSHELL_CMD="$ROOTDIR"/BuildShell


echo Logging install results to "$LOGFILE"
echo `date` Starting $0 $*>"$LOGFILE"

echo Downloading GNU Tools for ARM Embedded Processors...
echo `date` Executing curl -L0 $GCC4ARM_URL>>"$LOGFILE"
curl -L0 $GCC4ARM_URL >$GCC4ARM_FILENAME

echo Validating md5 signature of GNU Tools for ARM Embedded Processors...
echo `date` Validating md5 signature of GNU Tools for ARM Embedded Processors>>"$LOGFILE"
archive_match=`md5 -q $GCC4ARM_FILENAME | grep -c $GCC4ARM_MD5`
if [ "$archive_match" != "1" ] ; then
    echo $GCC4ARM_FILENAME failed MD5 signature check.>>"$LOGFILE"
    echo `date` Failure forced early exit>>"$LOGFILE"
    cat "$LOGFILE"
    rm -f "$ERRORFILE"
    popd >/dev/null
    read -n 1 -sp "Press any key to continue..." dummy ; echo
    exit 1
fi

echo Extracting GNU Tools for ARM Embedded Processors...
rm -r "$GCC4ARM_DIR" >/dev/null 2>/dev/null
echo $GCC4ARM_TAR
RunAndLog tar xf "$GCC4ARM_TAR"
RunAndLog mv "$GCC4ARM_EXTRACT" "$GCC4ARM_DIR"

echo Installing patched 64-bit Intel Mac OS X GDB binaries...
RunAndLog cp "$MACBIN_DIR"/arm-none-eabi-gdb* "$GCC4ARM_BINDIR/"

echo Creating helper scripts...
echo "#! /usr/bin/env bash">"$BUILDSHELL_CMD"
echo "# Modify next line and set destination drive to match mbed device">>"$BUILDSHELL_CMD"
echo "export LPC_DEPLOY='cp PROJECT.bin /Volumes/MBED/ ; sync'">>"$BUILDSHELL_CMD"
echo>>"$BUILDSHELL_CMD"
echo "SCRIPT_PATH=\$0">>"$BUILDSHELL_CMD"
echo "SCRIPT_PATH=\${SCRIPT_PATH%/*}">>"$BUILDSHELL_CMD"
echo "cd \$SCRIPT_PATH">>"$BUILDSHELL_CMD"
echo "SCRIPT_PATH=\$PWD">>"$BUILDSHELL_CMD"
echo "export PATH=\$SCRIPT_PATH/gcc-arm-none-eabi/bin:\$SCRIPT_PATH/build/osx64:\$PATH">>"$BUILDSHELL_CMD"
echo "exec bash">>"$BUILDSHELL_CMD"
chmod +x "$BUILDSHELL_CMD"

echo Cleaning up intermediate files...
RunAndLog rm "$GCC4ARM_TAR"

echo
echo To build Smoothie, you will first need to run the following script
echo so that your environment variables are set correctly:
echo  $BUILDSHELL_CMD
echo You will want to run this each time you start a new Terminal.  You
echo can simply double-click on this script file from Finder to launch a
echo bash Terminal that has been properly initialized for building. Feel
echo free to customize it as you desire.
echo
echo You can also just edit your existing setup script such as \~/.profile
echo to update the PATH environment variable to include:
echo  $GCC4ARM_BINDIR


# Restore current directory and exit script on success.
echo `date` Finished successfully>>"$LOGFILE"
echo Finished successfully
rm -f "$ERRORFILE"
popd >/dev/null
read -n 1 -sp "Press any key to continue..." dummy ; echo