#!/bin/bash
zip_file_path=$1


if [[ -z $1 ]]; then
  echo "Specify SAP NetWeaver RFC SDK zip file path. SAP NetWeaver RFC SDK file is available at https://support.sap.com/en/product/connectors/nwrfcsdk.html"
  exit 1
fi


# returns 0 if same,
# returns 1 if version 1 is greater than version 2
# returns 2 is version 1 is less than version 2

version_compare() {
    local s_ver1=$1
    local s_ver2=$2
    local a_ver1=($(echo $s_ver1 | tr '.' "\n"))
    local a_ver2=($(echo $s_ver2 | tr '.' "\n"))
    local i_no_of_ele_ver1=${#a_ver1[@]}
    local i_no_of_ele_ver2=${#a_ver2[@]}
    local i_result=0
    if [ "X$i_no_of_ele_ver1" != "X$i_no_of_ele_ver2" ]; then
        echo -e "version_compare sub-routine needs identical number of elements"
        exit 1
    fi
    for ((i = 0; i < $i_no_of_ele_ver1; i++)); do
        if [ ${a_ver1[$i]} -eq ${a_ver2[$i]} ]; then
            continue
        fi
        if [ ${a_ver1[$i]} -gt ${a_ver2[$i]} ]; then
            #version 1 is greater
            i_result=1
        else
            #version 2 is greater
            i_result=2
        fi
        break
    done
    echo $i_result
}


version_check() {
    version_str=$(cat /opt/cyops-ui/version.json)
    version_split=($(echo $version_str | tr ':' "\n"| tr '-' "\n" ))
    new_version=$(awk -F'\"' '{print $2}' <<< "${version_split[1]}")
    compare_result=$(version_compare '7.2.0' $new_version)
    if [ $? -ne 0 ]; then
        echo "Failed to compare the version"
        exit 1
    fi
    if [ $compare_result -eq 1 ]; then
        user='nginx'
    else
        user='fsr-integrations'
    fi
    echo $user
}


user=$(version_check)
env_file="/etc/environment"
nwrfcsdk_path="/usr/local/sap/"
sec_path="/opt/sec"
sap_crypto_lib="/opt/SAPCRYPTOLIB"
pip_path="/opt/cyops-integrations/.env/bin/pip3"
python_path="/opt/cyops-integrations/.env/bin/python3"
sudo -u $user $python_path $pip_path install Cython==0.29.30
printf '=%.0s' {1..80}; printf '\n# Install SAP NWRFC Libraries\n'
sudo mkdir -p $nwrfcsdk_path
echo "${nwrfcsdk_path} created successfully"
printf '~%.0s' {1..80}; printf '\n'
sudo mkdir -p $sec_path
echo "${sec_path} created successfully"
printf '~%.0s' {1..80}; printf '\n'
sudo chown -R $user:$user $sec_path
file_name="${zip_file_path##*/}"
curl "$zip_file_path" -o /tmp/$file_name && unzip /tmp/$file_name -d $nwrfcsdk_path
printf '~%.0s' {1..80}; printf '\n'
echo "${file_name} downloaded at ${nwrfcsdk_path} successfully"
sudo chown -R $user:$user $nwrfcsdk_path
printf "SAPNWRFC_HOME=${nwrfcsdk_path}nwrfcsdk\nSNC_LIB=$sap_crypto_lib/libsapcrypto.so\nSECUDIR=$sec_path" >>$env_file
echo "SAPNWRFC_HOME, SNC_LIB, and SECUDIR environment variables setup successfully"
printf '~%.0s' {1..80}; printf '\n'
echo "${nwrfcsdk_path}nwrfcsdk/lib" >>/etc/ld.so.conf.d/nwrfcsdk.conf
ldconfig && ldconfig -p | grep sap
printf '~%.0s' {1..80}; printf '\n'
sudo -u $user $python_path $pip_path install pyrfc==2.5.0
printf '~%.0s' {1..80}; printf '\n'