installer

#!/usr/bin/env bash
#
# This is the guided installer for the SolveBio Python Client:
#
#    curl -kL install.solvebio.com | bash
#

echo
echo " ____        _           ____  _"
echo "/ ___|  ___ | |_   _____| __ )(_) ___"
echo "\___ \ / _ \| \ \ / / _ \  _ \| |/ _ \\"
echo " ___) | (_) | |\ V /  __/ |_) | | (_) |"
echo "|____/ \___/|_| \_/ \___|____/|_|\___/"
echo
echo "Copyright © 2014 Solve, Inc. <http://www.solvebio.com>. All rights reserved."
echo

shopt -s extglob

function fail_exit() {
    echo
    echo "#####################################"
    echo
    echo "Failed to install SolveBio."
    echo "If you need some help, email us at contact@solvebio.com"
    echo "or chat with our engineers at http://chat.solvebio.com/"
    echo
    echo "#####################################"
    echo
    exit
}

trap ctrl_c INT

function ctrl_c() {
    echo
    echo
    echo "Installation was aborted..."
    fail_exit
}

echo "Installing the SolveBio Python Client..."
echo

# Check Python versions
PYTHON_PATHS=`echo $PATH | sed -e 's/:/ /g'`
PYTHON_VERSIONS=`find $PYTHON_PATHS -regex ".*/python*" -o -regex ".*/python2.[567]" 2> /dev/null | sort`

echo "Looking for a supported Python installation..."
# try in order of $PATH
for PYTHON in $PYTHON_VERSIONS ; do
    if [[ ! -x $PYTHON ]] ; then
        continue
    fi

    PYTHON_VERSION=`$PYTHON -V 2>&1 | cut -d " " -f 2`
    if [[ $PYTHON_VERSION =~ 2.[67].[0-9] ]]; then
        PYTHON_FOUND='1'
        break
    fi
done

if [ "$PYTHON_FOUND" == '1' ]; then
    echo "Found Python ${PYTHON_VERSION} at ${PYTHON}!"
    # TODO: allow optional Python path
    # echo -n "Which Python do you want to use (press enter for: ${PYTHON}) ? "
    # read PYTHON_ALT
    # if [[ -x $PYTHON_ALT ]]; then
    #     PYTHON=$PYTHON_ALT
    # fi
    echo "Using ${PYTHON}..."
else
    echo "The SolveBio Python Client requires Python >= 2.6.5 and < 3.0"
    # TODO: instructions for installing Python
    fail_exit
fi

# Check OpenSSL version

OPENSSL_VERSION=`$PYTHON -c "import ssl; print ssl.OPENSSL_VERSION" 2> /dev/null`
if [ "$OPENSSL_VERSION" == "" ]; then
    echo
    echo
    echo "SolveBio for Python requires a more recent version of Python-OpenSSL."
    fail_exit
fi

OPENSSL_VERSION_MAJOR=`$PYTHON -c "import ssl; print ssl.OPENSSL_VERSION_INFO[0]"`
OPENSSL_VERSION_MINOR=`$PYTHON -c "import ssl; print ssl.OPENSSL_VERSION_INFO[1]"`
OPENSSL_VERSION_PATCH=`$PYTHON -c "import ssl; print ssl.OPENSSL_VERSION_INFO[2]"`

if [ "$OPENSSL_VERSION_MAJOR" -lt "1" ]; then
    if [ "$OPENSSL_VERSION_MINOR" -lt "9" ] || [ "$OPENSSL_VERSION_PATCH" -lt "8" ]; then
        echo
        echo "SolveBio for Python requires OpenSSL >= 0.9.8"
        echo "Your Python SSL module is linked to $OPENSSL_VERSION"
        fail_exit
    fi
fi

# Install readline with easy_install
echo "Installing readline through easy_install (enhances IPython)..."
echo "(Your user or system password may be required)"
sudo $PYTHON -m easy_install readline

# Check for working pip
PIP_VERSION=`$PYTHON -m pip --version 2>&1`
if [[ ! "$PIP_VERSION" =~ (^pip .*) ]]; then
    echo "It looks like pip is not installed. We will now attempt to install it."
    echo "(Your user or system password may be required)"
    sudo $PYTHON -m easy_install pip
    # TODO: use this instead: curl https://raw.github.com/pypa/pip/master/contrib/get-pip.py | python

    PIP_VERSION=`$PYTHON -m pip --version 2>&1`
    if [[ ! "$PIP_VERSION" =~ (^pip .*) ]]; then
        echo
        echo "There seems to be a problem installing pip..."
        fail_exit
    else
        echo "pip install successful!"
    fi
fi

PIP_FLAGS=""
# disable the use of wheels if pip supports them
if [ $($PYTHON -m pip install --help | grep "\-\-no\-use\-wheel" -c) -ne 0 ]; then
  PIP_FLAGS="--no-use-wheel"
fi

# Are we installing or upgrading?
if [ $(pip freeze | grep solvebio -c) -ne 0 ]; then
  echo "SolveBio for Python is already installed, we will try to upgrade it..."
  PIP_FLAGS="${PIP_FLAGS} --upgrade"
  ACTION="Upgrading"
else
  ACTION="Installing"
fi

echo
echo "${ACTION} the SolveBio module via pip..."
echo "(Your user or system password may be required)"
sudo $PYTHON -m pip install solvebio $PIP_FLAGS && SUCCESS="1"

if [ $? -eq 0 ]; then
    echo
    echo "#####################################"
    echo
    echo "Success! SolveBio for Python is now installed."
    echo
    echo "Run 'solvebio login' to start."
    echo
    echo "Check out the Get Started guide:"
    echo "https://www.solvebio.com/documentation/get-started"
    echo "If you need some help, email contact@solvebio.com"
    echo "or chat with our engineers at http://chat.solvebio.com/"
    echo
    echo "#####################################"
    echo
else
    fail_exit
fi