#!/bin/bash

# A directory that contains an existing Git repository of
# Buildroot. The script will git clone from it instead of git cloning
# from the official repo, in order to reduce the clone time.
BASE_GIT=/home/test/buildroot/

# Location where the output directories will be created. One
# subdirectory, named after the build ID will be created for each
# build.
OUTPUT_DIR=/home/test/outputs/

if [ $# -ne 1 ] ; then
    echo "Usage: $0 buildid" ;
    echo "  buildid is the SHA1 of the build result, as found on http://autobuild.buildroot.net"
    exit 1 ;
fi

BUILD_ID=$1

BUILD_DIR=${OUTPUT_DIR}/${BUILD_ID}

mkdir -p ${BUILD_DIR}
if [ $? -ne 0 ] ; then
    echo "Cannot create output directory"
    exit 1
fi

wget -O ${BUILD_DIR}/config http://autobuild.buildroot.org/results/${BUILD_ID}/config
if [ $? -ne 0 ] ; then
    echo "Cannot get configuration for build ${BUILD_ID}"
    rm -f ${BUILD_DIR}
    exit 1
fi

wget -O ${BUILD_DIR}/gitid http://autobuild.buildroot.org/results/${BUILD_ID}/gitid

cd ${BUILD_DIR}
git clone ${BASE_GIT}
if [ $? -ne 0 ] ; then
    echo "Cannot clone Buildroot Git repository"
    rm -rf ${BUILD_DIR}
    exit 1
fi

cd buildroot

git remote set-url origin git://git.busybox.net/buildroot

git pull
if [ $? -ne 0 ] ; then
    echo "Cannot pull Buildroot Git repository"
    rm -rf ${BUILD_DIR}
    exit 1
fi

git checkout $(cat ../gitid)
if [ $? -ne 0 ] ; then
    echo "Cannot checkout commit " $(cat ../gitid)
    rm -rf ${BUILD_DIR}
    exit 1
fi

mkdir ../output
cp ${BUILD_DIR}/config ../output/.config
make 2>&1 O=../output | tee logfile