#!/bin/bash -x

#Default Tempest commit: SHA 8f98c4b60bf06a8c15e8c054848d2440c46077d0 (February 17, 2017 tags 15.0.0)
CHECKOUT_POINT=8f98c4b60bf06a8c15e8c054848d2440c46077d0

# Prints help
function usage {
    set +x
    SCRIPT_NAME="basename ${BASH_SOURCE[0]}"
    echo "Usage: ${SCRIPT_NAME} [OPTION]..."
    echo "Setup RefStack client with test environment"
    echo ""
    echo "  -h  Print this usage message"
    echo "  -c  Tempest test runner commit. You can specify SHA or branch here"
    echo "      If no commit or tag is specified, tempest will be install from commit"
    echo "  -q  Run quietly. If .tempest folder exists, refstack-client is considered as installed"
    echo "  -t  Tempest test runner tag. You can specify tag here"
    echo "      ${CHECKOUT_POINT}"
    exit 1
}

# Check that parameter is a valid tag in tempest repository
function check_tag {
        tags="$(git tag)"
        for tag in ${tags}; do
                [[ "${tag}" == "$1" ]] && return 0;
        done
        return 1
}

# By default tempest uses commit ${CHECKOUT_POINT}

while getopts c:t:qh FLAG; do
    case ${FLAG} in
        c)
            CHECKOUT_POINT=${OPTARG}
            ;;
        t)
            CHECKOUT_POINT="-q ${OPTARG}"
            ;;
        q)  #show help
            QUIET_MODE=true
            ;;
        h)  #show help
            usage
            ;;
        \?) #unrecognized option - show help
            echo -e \\n"Option -$OPTARG not allowed."
            usage
            ;;
    esac
done

# Install git
WORKDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

TEMPEST_DIR=${REFSTACK_CLIENT_TEMPEST_DIR:-${WORKDIR}/.tempest}

# Checkout tempest on specified tag
if [ -d "${TEMPEST_DIR}" ]; then
    [ ${QUIET_MODE} ] && echo 'Looks like RefStack client is already installed' && exit 0
    while true; do
        read -p "Existing tempest installation found. We should remove it. All data from previous test runs will be deleted. Continue (y/n) ?" yn
        case ${yn} in
            [Yy]* ) rm -rf ${TEMPEST_DIR}; break;;
            [Nn]* ) exit 1;;
            * ) echo "Please answer yes or no.";;
        esac
    done
fi

if [ -n "$(command -v apt-get)" ]; then
    # For apt-get-based Linux distributions (Ubuntu, Debian)
    # If we run script in container we need sudo
    if [ ! -n "$(command -v sudo)" ]; then
        apt-get update || if [ $? -ne 0 ]; then exit 1; fi
        apt-get -y install sudo
    else
        sudo apt-get update || if [ $? -ne 0 ]; then exit 1; fi
    fi
    sudo apt-get -y install git
elif [ -n "$(command -v yum)" ]; then
    # For yum-based distributions (RHEL, Centos)
    # If we run script in container we need sudo
    if [ ! -f sudo ]; then
        yum -y install sudo
    fi
    sudo yum -y install git
elif [ -n "$(command) -v zypper" ]; then
    # For zypper-based distributions (openSuSe, SELS)
    # If we run script in container we need sudo
    if [ ! -f sudo ]; then
        zypper --gpg-auto-import-keys --non-interactive refresh
        zypper --non-interactive install sudo
    else
        sudo zypper --gpg-auto-import-keys --non-interactive refresh
    fi
    sudo zypper --non-interactive install git
else
    echo "Neither apt-get, nor yum, nor zypper found"
    exit 1
fi

git clone https://github.com/openstack/tempest.git ${TEMPEST_DIR}
cd ${TEMPEST_DIR}

git checkout $CHECKOUT_POINT || if [ $? -ne 0 ]; then exit 1; fi
cd ${WORKDIR}

# Setup binary requirements
if [ -n "$(command -v apt-get)" ]; then
    # For apt-get-based Linux distributions (Ubuntu, Debian)
    sudo apt-get -y install curl wget tar unzip python-dev build-essential libssl-dev libxslt-dev libsasl2-dev libffi-dev libbz2-dev libyaml-dev
elif [ -n "$(command -v yum)" ]; then
    # For yum-based distributions (RHEL, Centos)
    sudo yum -y install curl wget tar unzip make python-devel.x86_64 gcc gcc-c++ libffi-devel libxml2-devel bzip2-devel libxslt-devel openssl-devel libyaml-devel
elif [ -n "$(command) -v zypper" ]; then
    # For zypper-based distributions (openSuSe, SELS)
    sudo zypper --non-interactive install curl wget tar unzip make python-devel.x86_64 gcc gcc-c++ libffi-devel libxml2-devel zlib-devel libxslt-devel libopenssl-devel python-xml libyaml-devel
else
    echo "Neither apt-get, nor yum, nor zypper found."
    exit 1
fi

# Build local python interpreter if needed
if [ ! -n "$(command -v python2.7)" ]; then
    PY_VERSION="2.7.8"
    echo "python2.7 not found. Building python ${PY_VERSION}..."
    mkdir ${WORKDIR}/.localpython
    mkdir ${WORKDIR}/.python_src
    cd ${WORKDIR}/.python_src
    wget http://www.python.org/ftp/python/${PY_VERSION}/Python-${PY_VERSION}.tgz
    tar zxvf Python-${PY_VERSION}.tgz
    cd Python-${PY_VERSION}

    ./configure --prefix=${WORKDIR}/.localpython
    make && make install
    cd ${WORKDIR}
    rm -rf ${WORKDIR}/.python_src
    PYPATH="${WORKDIR}/.localpython/bin/python"
else
echo "python2.7 found!"
PYPATH="python2.7"
fi

# Setup virtual environments for refstack-client and tempest
VENV_VERSION='15.0.3'
wget https://github.com/pypa/virtualenv/archive/${VENV_VERSION}.tar.gz
tar xvfz ${VENV_VERSION}.tar.gz
rm ${VENV_VERSION}.tar.gz
cd virtualenv-${VENV_VERSION}
if [ -d ${WORKDIR}/.venv ]; then
    rm -rf ${WORKDIR}/.venv
fi
python virtualenv.py ${WORKDIR}/.venv --python="${PYPATH}"
python virtualenv.py ${TEMPEST_DIR}/.venv --python="${PYPATH}"
cd ..
rm -rf virtualenv-${VENV_VERSION}
rm virtualenv-${VENV_VERSION}.tar.gz
${WORKDIR}/.venv/bin/python -m pip install -e .
${TEMPEST_DIR}/.venv/bin/python -m pip install -r ${TEMPEST_DIR}/requirements.txt

# Add additional packages to find more tests by tempest
# Note: Since there are no requirements in tempest-additional-requirements.txt by default,
# this line is commented out to prevent errors from being returned. Uncomment this line if
# there are requirements in tempest-additonal-requirements.txt.
# ${TEMPEST_DIR}/.venv/bin/pip install -r ${WORKDIR}/tempest-additional-requirements.txt