#!/bin/bash
# prepare the installation

copy2dir()
{
    repo=$1
    destdir=$2
    git_branch=master
    if [[ "$repo" =~ (git|http|https|ftp):// ]]; then
        if [[ -d $destdir || -L $destdir ]]; then
            cd $destdir
            git status &> /dev/null
            if [ $? -ne 0 ]; then
                echo "$destdir is not git repo"
                rm -rf $destdir
            else
                echo "$destdir is git repo"
            fi
            cd -
        fi

        if [[ -d $destdir || -L $destdir ]]; then
            echo "$destdir exists"
            cd $destdir
            git remote set-url origin $repo
            git remote update
            if [ $? -ne 0 ]; then
                echo "failed to git remote update $repo in $destdir"
                exit 1
            else
                echo "git remote update $repo in $destdir succeeded"
            fi
            git reset --hard
            git clean -x -f
            git checkout $git_branch
            git reset --hard remotes/origin/$git_branch
        else
            echo "create $destdir"
            mkdir -p $destdir
            git clone $repo $destdir
            if [ $? -ne 0 ]; then
                echo "failed to git clone $repo $destdir"
                exit 1
            else
                echo "git clone $repo $destdir suceeded"
            fi
            cd $destdir
            git reset --hard remotes/origin/$git_branch
        fi
        if [[ ! -z $ZUUL_REF || ! -z $GERRIT_REFSPEC ]]; then
            if [[ ! -z $ZUUL_REF ]]; then
                git_repo=$ZUUL_URL/$3
                git_ref=$ZUUL_REF
                if git branch -a|grep ${ZUUL_BRANCH}; then
                    git_branch=$ZUUL_BRANCH
                else
                    git_branch=master
                fi
            elif [[ ! -z $GERRIT_REFSPEC ]]; then
                git_repo=https://$GERRIT_HOST/$3
                git_ref=$GERRIT_REFSPEC
                if git branch -a|grep $GERRIT_BRANCH; then
                    git_branch=$GERRIT_BRANCH
                else
                    git_branch=master
                fi
            fi
            git reset --hard remotes/origin/$git_branch
            git fetch $git_repo $git_ref && git checkout FETCH_HEAD
            if [ $? -ne 0 ]; then
                echo "failed to git fetch $git_repo $git_ref"
            fi
            git clean -x -f
        fi
    else
        sudo rm -rf $destdir
        sudo cp -rf $repo $destdir
        if [ $? -ne 0 ]; then
            echo "failed to copy $repo to $destdir"
            exit 1
        else
            echo "copy $repo to $destdir succeeded"
        fi
    fi
    if [[ ! -d $destdir && ! -L $destdir ]]; then
        echo "$destdir does not exist"
        exit 1
    else
        echo "$destdir is ready"
    fi
    cd $SCRIPT_DIR
}

# Create backup dir
sudo mkdir -p /root/backup

# update /etc/hosts
sudo cp -rn /etc/hosts /root/backup/hosts
sudo rm -f /etc/hosts
sudo cp -rf $COMPASSDIR/misc/hosts /etc/hosts
sudo sed -i "s/\$ipaddr \$hostname/$ipaddr $HOSTNAME/g" /etc/hosts
sudo chmod 644 /etc/hosts

# update rsyslog
sudo cp -rn /etc/rsyslog.conf /root/backup/
sudo rm -f /etc/rsyslog.conf
sudo cp -rf $COMPASSDIR/misc/rsyslog/rsyslog.conf /etc/rsyslog.conf
sudo chmod 644 /etc/rsyslog.conf
sudo service rsyslog restart
sudo service rsyslog status
if [[ "$?" != "0" ]]; then
    echo "rsyslog is not started"
    exit 1
else
    echo "rsyslog conf is updated"
fi

# update logrotate.d
sudo cp -rn /etc/logrotate.d /root/backup/
rm -f /etc/logrotate.d/*
sudo cp -rf $COMPASSDIR/misc/logrotate.d/* /etc/logrotate.d/
sudo chmod 644 /etc/logrotate.d/*

# update ntp conf
sudo cp -rn /etc/ntp.conf /root/backup/
sudo rm -f /etc/ntp.conf
sudo cp -rf $COMPASSDIR/misc/ntp/ntp.conf /etc/ntp.conf
sudo chmod 644 /etc/ntp.conf
sudo service ntpd stop
sudo ntpdate 0.centos.pool.ntp.org
sudo service ntpd start
sudo service ntpd status
if [[ "$?" != "0" ]]; then
    echo "ntp is not started"
    exit 1
else
    echo "ntp conf is updated"
fi

# update squid conf
sudo cp -rn /etc/squid/squid.conf /root/backup/
sudo rm -f /etc/squid/squid.conf 
sudo cp $COMPASSDIR/misc/squid/squid.conf /etc/squid/
subnet_escaped=$(echo $SUBNET | sed -e 's/[\/&]/\\&/g')
sudo sed -i "s/acl localnet src \$subnet/acl localnet src $subnet_escaped/g" /etc/squid/squid.conf
sudo chmod 644 /etc/squid/squid.conf
sudo mkdir -p /var/squid/cache
sudo chown -R squid:squid /var/squid
sudo service squid restart
sudo service squid status
if [[ "$?" != "0" ]]; then
    echo "squid is not started"
    exit 1
else
    echo "squid conf is updated"
fi

#update mysqld
sudo service mysqld restart
MYSQL_USER=${MYSQL_USER:-root}
MYSQL_OLD_PASSWORD=${MYSQL_OLD_PASSWORD:-root}
MYSQL_PASSWORD=${MYSQL_PASSWORD:-root}
MYSQL_SERVER=${MYSQL_SERVER:-127.0.0.1}
MYSQL_PORT=${MYSQL_PORT:-3306}
MYSQL_DATABASE=${MYSQL_DATABASE:-db}
# first time set mysql password
sudo mysqladmin -h${MYSQL_SERVER} --port=${MYSQL_PORT} -u ${MYSQL_USER} -p"${MYSQL_OLD_PASSWORD}" password ${MYSQL_PASSWORD}
if [[ "$?" != "0" ]]; then
echo "setting up mysql initial password"
sudo mysqladmin -h${MYSQL_SERVER} --port=${MYSQL_PORT} -u ${MYSQL_USER} password ${MYSQL_PASSWORD}
fi
mysql -h${MYSQL_SERVER} --port=${MYSQL_PORT} -u${MYSQL_USER} -p${MYSQL_PASSWORD} -e "show databases;"
if [[ "$?" != "0" ]]; then
    echo "mysql password set failed"
    exit 1
else
    echo "mysql password set successful"
fi
sudo mysql -h${MYSQL_SERVER} --port=${MYSQL_PORT} -u${MYSQL_USER} -p${MYSQL_PASSWORD} -e "drop database ${MYSQL_DATABASE}"
sudo mysql -h${MYSQL_SERVER} --port=${MYSQL_PORT} -u${MYSQL_USER} -p${MYSQL_PASSWORD} -e "create database ${MYSQL_DATABASE}"
if [[ "$?" != "0" ]]; then
    echo "mysql database set fails"
    exit 1
else
    echo "mysql database set succeeds"
fi
sudo service mysqld restart
sudo service mysqld status
if [[ "$?" != "0" ]]; then
    echo "mysqld is not started"
    exit 1
else
    echo "mysqld conf is updated" 
fi

cd $SCRIPT_DIR
if [ -z $WEB_SOURCE ]; then
    echo "web source $WEB_SOURCE is not set"
    exit 1
fi
copy2dir "$WEB_SOURCE" "$WEB_HOME" "stackforge/compass-web" || exit $?

if [ -z $ADAPTERS_SOURCE ]; then
    echo "adpaters source $ADAPTERS_SOURCE is not set"
    exit 1
fi
copy2dir "$ADAPTERS_SOURCE" "$ADAPTERS_HOME" "stackforge/compass-adapters" || exit $?

if [ "$tempest" == "true" ]; then
    if [[ ! -e /tmp/tempest ]]; then
        git clone http://git.openstack.org/openstack/tempest /tmp/tempest
        if [[ "$?" != "0" ]]; then
            echo "failed to git clone tempest project"
            exit 1
        else
            echo "git clone tempest project succeeded"
        fi
        cd /tmp/tempest
        git checkout grizzly-eol
    else
        cd /tmp/tempest
        git remote set-url origin http://git.openstack.org/openstack/tempest
        git remote update
        if [[ "$?" != "0" ]]; then
            echo "failed to git remote update tempest project"
            exit 1
        else
            echo "git remote update tempest project succeeded"
        fi
        git reset --hard
        git clean -x -f -d -q
        git checkout grizzly-eol
    fi
    source `which virtualenvwrapper.sh`
    if ! lsvirtualenv |grep tempest>/dev/null; then
        mkvirtualenv tempest
    fi
    workon tempest
    cd /tmp/tempest
    pip install -e .
    pip install sqlalchemy
    if [[ "$?" != "0" ]]; then
        echo "failed to install tempest project"
        deactivate
        exit 1
    else
        echo "install tempest project succeeded"
        deactivate
    fi
fi

source `which virtualenvwrapper.sh`
if ! lsvirtualenv |grep compass-core>/dev/null; then
    mkvirtualenv compass-core
fi
workon compass-core
cd $COMPASSDIR
pip install -U -r requirements.txt
if [[ "$?" != "0" ]]; then
    echo "failed to install compass requiremnts"
    deactivate
    exit 1
fi
pip install -U -r test-requirements.txt
if [[ "$?" != "0" ]]; then
    echo "failed to install compass test requiremnts"
    deactivate
    exit 1
else
    echo "intall compass requirements succeeded"
    deactivate
fi

# TODO(xicheng): Please add comments to ths function. e.g, arg list
download()
{
    url=$1
    package=${2:-$(basename $url)}
    action=${3:-""}
    if [[ -f /tmp/${package} || -L /tmp/${package} ]]; then
        echo "$package already exists"
    else
        if [[ "$url" =~ (http|https|ftp):// ]]; then
            echo "downloading $url to /tmp/${package}"
            curl -L -o /tmp/${package}.tmp $url
            if [[ "$?" != "0" ]]; then
                echo "failed to download $package"
                exit 1
            else
                echo "successfully download $package"
                mv -f /tmp/${package}.tmp /tmp/${package}
            fi
        else
            cp -rf $url /tmp/${package}
        fi
        if [[ ! -f /tmp/${package} && ! -L /tmp/${package} ]]; then
            echo "/tmp/$package is not created"
            exit 1
        fi
    fi
    if [[ "$action" == "install" ]]; then
        echo "install /tmp/$package"
        sudo rpm -Uvh /tmp/$package
        if [[ "$?" != "0" ]]; then
            echo "failed to install $package"
            exit 1
        else
            echo "$package is installed"
        fi
    elif [[ "$action" == "copy" ]]; then
        echo "copy /tmp/$package to $destdir"
        destdir=$4
        sudo cp /tmp/$package $destdir
    fi
}


# download cobbler related packages
centos_ppa_repo_packages="
ntp-4.2.6p5-1.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_TYPE,,}.${CENTOS_IMAGE_ARCH}.rpm
openssh-clients-5.3p1-94.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
iproute-2.6.32-31.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
wget-1.12-1.8.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
ntpdate-4.2.6p5-1.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_TYPE,,}.${CENTOS_IMAGE_ARCH}.rpm"

for f in $centos_ppa_repo_packages; do
    download http://rpmfind.net/linux/${IMAGE_TYPE,,}/${IMAGE_VERSION_MAJOR}/os/${IMAGE_ARCH}/Packages/$f $f || exit $?
done

centos_ppa_repo_rsyslog_packages="
json-c-0.10-2.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
libestr-0.1.9-1.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
libgt-0.3.11-1.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
liblogging-1.0.4-1.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm
rsyslog-7.6.3-1.${CENTOS_IMAGE_TYPE_OTHER}${CENTOS_IMAGE_VERSION_MAJOR}.${CENTOS_IMAGE_ARCH}.rpm"

for f in $centos_ppa_repo_rsyslog_packages; do
    download http://rpms.adiscon.com/v7-stable/epel-6/${IMAGE_ARCH}/RPMS/$f $f || exit $?
done

download $CHEF_CLIENT `basename $CHEF_CLIENT` || exit $?
download $CENTOS_CHEF_CLIENT `basename $CENTOS_CHEF_CLIENT` || exit $?
download $UBUNTU_CHEF_CLIENT `basename $UBUNTU_CHEF_CLIENT` || exit $?

# download chef related packages
download $CHEF_SRV chef-server || exit $?

# download os images
download "$CENTOS_IMAGE_SOURCE" ${CENTOS_IMAGE_NAME}-${CENTOS_IMAGE_ARCH}.iso || exit $?
download "$UBUNTU_IMAGE_SOURCE" ${UBUNTU_IMAGE_NAME}-${UBUNTU_IMAGE_ARCH}.iso || exit $?

# Install net-snmp
if [[ ! -e /etc/snmp ]]; then
    sudo mkdir -p /etc/snmp
fi
if [[ -e /etc/snmp/snmp.conf ]]; then
    sudo cp -rn /etc/snmp/snmp.conf /root/backup/
    sudo rm -f /etc/snmp/snmp.conf
fi
sudo mkdir -p /usr/local/share/snmp/
sudo cp -rf $COMPASSDIR/mibs /usr/local/share/snmp/
sudo cp -rf $COMPASSDIR/misc/snmp/snmp.conf /etc/snmp/snmp.conf
sudo chmod 644 /etc/snmp/snmp.conf
sudo mkdir -p /var/lib/net-snmp/mib_indexes
sudo chmod 755 /var/lib/net-snmp/mib_indexes

# generate ssh key
if [[ ! -e $HOME/.ssh ]]; then
    sudo mkdir -p $HOME/.ssh
fi
if [ ! -e $HOME/.ssh/id_rsa.pub ]; then
    rm -rf $HOME/.ssh/id_rsa
    ssh-keygen -t rsa -f $HOME/.ssh/id_rsa -q -N ''
fi