#!/bin/sh
WriteInstallInfo() {
    date +%Y-%m-%dT%T.0Z > /etc/opt/microsoft/mysql-cimprov/conf/installinfo.txt
    echo 1.0.1-5 >> /etc/opt/microsoft/mysql-cimprov/conf/installinfo.txt
}
WriteInstallInfo

# Note: FindClientLibrary() is found in SCXCore/installer/oss-kits/mysql-oss-test.sh
#       If this function is modified, modify in that file as well!
FindClientLibrary()
{
    MYSQL_NAME=libmysqlclient.so
    CLIENT_LIBRARY=

    # Note that we do not want to install on a system WITH the client library but
    # without a server installed. While this is technically possible, it is not
    # desirable. Thus, pre-flight known MySQL server installations and refuse to
    # install if it appears that the server location does not exist.

    SERVER_SEARCH_LIST="/var/lib/mysql /usr/local/mysql/data /usr/local/var/mysql /opt/mysql*"
    SERVER_FOUND=0
    for i in ${SERVER_SEARCH_LIST}; do
	if [ -d "$i" ]; then
	    SERVER_FOUND=1
	    break
	fi
    done

    [ "$SERVER_FOUND" -eq 0 ] && return

    # We use a variety of means to find libmysqlclient.so:
    #
    # 1. Via ldd of 'mysql' client program (may not be installed, or may link statically to MySQL)
    # 2. Via ldconfig -p (doesn't work properly on all systems)
    # 3. Search a list of likely directories
    #
    # If, after all that, we don't find it, then CLIENT_LIBRARY is empty, signifying a failure

    MYSQL_PATH=`which mysql`
    [ -n "${MYSQL_PATH}" ] && CLIENT_LIBRARY=`ldd ${MYSQL_PATH} | grep ${MYSQL_NAME} | awk '{print $3}'`

    # Be aware that /sbin/ldconfig may return multiple hits; if so, we'll use the first one
    [ -z "${CLIENT_LIBRARY}" ] && CLIENT_LIBRARY=`/sbin/ldconfig -p | grep ${MYSQL_NAME} | head -1 | awk '{print $NF}'`

    if [ -z "${CLIENT_LIBRARY}" ]; then
        SEARCH_LIST_64="/usr/lib64 /usr/lib64/mysql /lib64 /lib64/mysql /usr/lib/x86_64-linux-gnu"
        SEARCH_LIST_32="/usr/lib /usr/lib/mysql /lib /lib/mysql /usr/lib/*86-linux-gnu /usr/local/mysql/lib"
        # Fix for Debian systems - packages installed in /opt, library built into mysql cli program statically
        SEARCH_LIST_32="$SEARCH_LIST_32 /opt/mysql*/*/lib"

        if [ `uname -m` = "x86_64" ]; then
            SEARCH_LIST="${SEARCH_LIST_64} ${SEARCH_LIST_32}"
        else
            SEARCH_LIST="${SEARCH_LIST_32}"
        fi

        # echo "Searching for ${MYSQL_NAME} in: ${SEARCH_LIST}"
        for i in ${SEARCH_LIST}; do
            # echo "  Checking $i ..."
            if [ -e $i/${MYSQL_NAME} ]; then
                CLIENT_LIBRARY=$i/${MYSQL_NAME}
                break
            fi
        done
    fi
}

FindClientLibrary


if [ -z "${CLIENT_LIBRARY}" ]; then
    echo "Unable to find prerequisite library ${MYSQL_NAME}" 1>&2
    exit 1
fi

# Remove linkage in case it exists
MYSQL_BUILD_LIBRARY=libmysqlclient.so.15
LIBRARY_DIR='/opt/microsoft/mysql-cimprov/lib'
[ -e ${LIBRARY_DIR}/${MYSQL_BUILD_LIBRARY} ] && rm ${LIBRARY_DIR}/${MYSQL_BUILD_LIBRARY}
ln -s ${CLIENT_LIBRARY} ${LIBRARY_DIR}/${MYSQL_BUILD_LIBRARY}

# Reload the OMI server
/opt/omi/bin/service_control reload

exit 0